ClinicalTrials.gg
CompletedNCT00364793Updated Apr 29, 2014Results posted

Safety, Tolerability and Pharmacokinetics of Efavirenz in HIV-Infected Children

A Phase 1/2 interventional study of Efavirenz (EFV) + Didanosine (ddI) + Emtricitabine (FTC) in HIV Infections, sponsored by Bristol-Myers Squibb. Completed at 17 sites in 6 countries. Open to participants aged 3 Months to 6 Years. Per ClinicalTrials.gov, last updated 2014-04-29.

Sponsored by Bristol-Myers Squibb · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
56
Allocation
Non-randomized
Ages
3 Months to 6 Years
Sex
All
01

Study summary

The primary purpose of this study is to find the dose of Efavirenz for young children. The safety and how the medication is tolerated will also be studied.

02

Conditions studied

  • HIV Infections

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Keywords

  • HIV, Pediatric
03

In context

HIV Infections

4,340 studies on the registry are indexed under HIV Infections; 240 are open to participants now.

This study's enrollment of 56 is below the median of 83 across 3,312 interventional studies indexed under HIV Infections.

Browse HIV Infections studies →

Lead sponsor

Bristol-Myers Squibb is the lead sponsor of 1,562 studies on the registry; 118 are open to participants now.

Of its 435 completed or terminated interventional studies of FDA-regulated products, 227 (52%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
3 Months to 6 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • HIV-1 infected; >=3 months of age to \<=6 years of age (at time of treatment); screening plasma viral load >=1000 copies/mL

Exclusion criteria

Exclusion Criteria:

  • Genotypic or phenotypic resistance to EFV, ddl, or FTC/lamivudine (3TC) at screening
05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
56 participants (actual)

Study arms

  • Experimental
    EFV+ddI+FTC in patients >= 3 months to < 6 months

    EFV (efavirenz) was administered in accordance with weight-based dosing nomograms and included one of the following preparations in a once a day (QD) dose: EFV capsules (50 and 200 mg) contents mixed with formula or a small amount of food vehicle, or oral solution (30 mg/mL. In addition, the following 2 drugs were administered: ddI (didanosine) (Pediatric Powder for Oral Solution or capsules of enteric-coated beads): 240 mg/m\^2 QD; maximum daily dose of 400 mg and FTC (emtricitabine) (solution or tablets) 6 mg/kg QD; maximum daily dose of 240 mg.

    Drug: Efavirenz (EFV) + Didanosine (ddI) + Emtricitabine (FTC)

  • Experimental
    EFV+ddI+FTC in patients >=6 months to < 2 years

    EFV (efavirenz) was administered in accordance with weight-based dosing nomograms and included one of the following preparations in a once a day (QD) dose: EFV capsules (50 and 200 mg) contents mixed with formula or a small amount of food vehicle, or oral solution (30 mg/mL. In addition, the following 2 drugs were administered: ddI (didanosine) (Pediatric Powder for Oral Solution or capsules of enteric-coated beads): 240 mg/m\^2 QD; maximum daily dose of 400 mg and FTC (emtricitabine) (solution or tablets) 6 mg/kg QD; maximum daily dose of 240 mg.

    Drug: Efavirenz (EFV) + Didanosine (ddI) + Emtricitabine (FTC)

  • Experimental
    EFV+ddI+FTC in patients >= 2 years to < 3 years

    EFV (efavirenz) was administered in accordance with weight-based dosing nomograms and included one of the following preparations in a once a day (QD) dose: EFV capsules (50 and 200 mg) contents mixed with formula or a small amount of food vehicle, or oral solution (30 mg/mL. In addition, the following 2 drugs were administered: ddI (didanosine) (Pediatric Powder for Oral Solution or capsules of enteric-coated beads): 240 mg/m\^2 QD; maximum daily dose of 400 mg and FTC (emtricitabine) (solution or tablets) 6 mg/kg QD; maximum daily dose of 240 mg.

    Drug: Efavirenz (EFV) + Didanosine (ddI) + Emtricitabine (FTC)

  • Experimental
    EFV+ddI+FTC in patients >= 3 years to <= 6 years

    EFV (efavirenz) was administered in accordance with weight-based dosing nomograms and included one of the following preparations in a once a day (QD) dose: EFV capsules (50 and 200 mg) contents mixed with formula or a small amount of food vehicle, or oral solution (30 mg/mL. In addition, the following 2 drugs were administered: ddI (didanosine) (Pediatric Powder for Oral Solution or capsules of enteric-coated beads): 240 mg/m\^2 QD; maximum daily dose of 400 mg and FTC (emtricitabine) (solution or tablets) 6 mg/kg QD; maximum daily dose of 240 mg.

    Drug: Efavirenz (EFV) + Didanosine (ddI) + Emtricitabine (FTC)

Interventions

  • DrugEfavirenz (EFV) + Didanosine (ddI) + Emtricitabine (FTC)

    Drug pages: Efavirenz · Didanosine · Emtricitabine

    Oral Solution, Capsules or Tablets, Oral, once daily Efavirenz (EFV) per weight-based dosing nomogram (max 720 mg) Didanosine (ddI) 240 mg/m2 (max 400 mg) Emtricitabine (FTC) 6 mg/kg (max 200 mg) Where EFV oral solution is commercially available: 48 weeks or until 3rd birthday (whichever is longer); Where EFV oral solution NOT commercially available: until 7th birthday or until able to swallow EFV capsules (whichever occurs first)

    Also known as: Sustiva, BMS-561525

06

What researchers measure

Primary outcomes

  1. Maximum Observed Plasma Concentration (Cmax) and Plasma Concentration 24 Hours Post-dose (Cmin) of EFV at Week 2 - Pharmacokinetic Evaluable Population

    Cmax and Cmin were derived from plasma concentrations versus time using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. Cmax and Cmin were recorded directly from experimental observations. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. Cmax and Cmin were measured in ng/mL.

    Time frame: Week 2

  2. Area Under the Plasma Concentration Time Curve (AUC) Over One Dosing Interval From Time Zero to 24 Hours Post-dose(TAU) at Week 2 - Pharmacokinetic Evaluable Population

    Plasma concentrations were obtained using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. AUC(TAU) was calculated by log- and linear trapezoidal summations. If a concentration was \< LLOQ at time TAU, the value of the concentration at time TAU was estimated using the quotient of the last quantifiable concentration and λ. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters summarized using geometric means. AUC(TAU) was measured in micromolars\*time (µM•h).

    Time frame: Week 2

  3. Apparent Oral Clearance (CLT/F) of EFV at Week 2 - Pharmacokinetic Evaluable Population

    Plasma concentrations of EFV were obtained using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. CLT/F was calculated by dividing the dose of EFV by AUC(TAU) of EFV. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F was measured in liters per hour (L/h).

    Time frame: Week 2

  4. Apparent Oral Clearance Adjusted for Body Weight (CLT/F/kg) of EFV at Week 2 - Pharmacokinetic Evaluable Population

    Plasma concentrations of EFV were determined using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. CLT/F/kg was calculated by dividing CLT/F by body weight in kilograms (kg). Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F/kg was measured in liters per hour per kilogram (L/h/kg).

    Time frame: Week 2

Secondary outcomes

  1. The Number of Participants With Plasma HIV RNA < 400 Copies Per Milliliter (c/mL) at Week 48 as Analyzed by Different Algorithms - All Treated Participants

    Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 400 c/mL at Week 48; participants were failures if virologic rebound occurred at or before Week 48; therapy discontinued before Week 48; no response by Week 48, or missing HIV RNA at Week 48 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 400 c/mL closest to the planned Week 48 visit and within the predefined Week 48 visit window; those on treatment and missing their Week 48 measurement were responders only if previous and subsequent measurements to the Week 48 visit window were \< 400 c/mL; denominator was all who remained on treatment through Week 48. Snapshot: participants were responders according to the last on-treatment HIV RNA \< 400 c/mL in the predefined Week 48 visit window; denominator was all treated participants.

    Time frame: Week 48

  2. The Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Week 48 as Analyzed by Different Algorithms - All Treated Participants

    Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 50 c/mL at Week 48; participants were failures if virologic rebound occurred at or before Week 48; therapy discontinued before Week 48; no response by Week 48, or missing HIV RNA at Week 48 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 50 c/mL closest to the planned Week 48 visit and within the predefined Week 48 visit window; those on treatment and missing their Week 48 measurement were responders only if previous and subsequent measurements to the Week 48 visit window were \< 50 c/mL; denominator was all who remained on treatment through Week 48. Snapshot: participants were responders according to the last on-treatment HIV RNA \< 50 c/mL in the predefined Week 48 visit window; denominator was all treated participants.

    Time frame: Week 48

  3. The Number of Participants With Plasma HIV RNA Levels < 400 c/mL at Week 24 as Analyzed by Different Algorithms - All Treated Participants

    Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 400 c/mL at Week 24; participants were failures if virologic rebound occurred at or before Week 24; therapy discontinued before Week 24; no response by Week 24, or missing HIV RNA at Week 24 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 400 c/mL closest to the planned Week 24 visit and within the predefined Week 24 visit window; those on treatment and missing their Week 24 measurement were responders only if previous and subsequent measurements to the Week 24 visit window were \< 400 c/mL; denominator was all who remained on treatment through Week 24.

    Time frame: Week 24

  4. The Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Week 24 as Analyzed by Different Algorithms - All Treated Participants

    Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 50 c/mL at Week 24; participants were failures if virologic rebound occurred at or before Week 24; therapy discontinued before Week 24; no response by Week 24, or missing HIV RNA at Week 24 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 50 c/mL closest to the planned Week 24 visit and within the predefined Week 24 visit window; those on treatment and missing their Week 24 measurement were responders only if previous and subsequent measurements to the Week 24 visit window were \< 50 c/mL; denominator was all who remained on treatment through Week 24.

    Time frame: Week 24

  5. Log10 c/mL HIV RNA Changes From Baseline Through Week 48 - Treated Participants

    HIV RNA measured as log10 copies per milliliter (c/mL) plasma. HIV RNA values ≥ 1,000 c/mL were considered evidence of infection. A decrease in number of c/mL is an improvement for the participant. HIV RNA was first measured using the ultrasensitive and standard Roche Amplicor PCR, version 1.5, and then the method of measurement was switched to the COBAS AmpliPrep/COBAS TaqMan HIV IVD method. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

    Time frame: Baseline through Week 48

  6. CD4 Cell Count Change From Baseline at Weeks 24 and 48 - Treated Participants

    A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeters to the third power (cells/mm\^3). An increase from baseline in the number of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

    Time frame: Baseline to Weeks 24 and 48

  7. Percent of CD4 Cells Change From Baseline at Weeks 24 and 48 - Treated Participants

    A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeter to the third power (cells/mm\^3). Percent of CD4 cells is the number of CD4 cells per total number of cells measured\*100. An increase in the percent of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

    Time frame: Baseline to Weeks 24 and 48

  8. Number of Participants With On-Treatment Adverse Events (AEs), Related Adverse Events, Serious Adverse Events (SAEs), Death, Discontinuation Due to Adverse Events, and CDC Class C AIDS Events

    Center for Disease Control and Prevention (CDC) classification of Class C events used to define acquired immunodeficiency syndrome (AIDS): include pneumocystis pneumonia, pneumonia, pulmonary tuberculosis. AE=new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. SAE=medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. Treatment-related=having certain, probable, possible, or missing relationship to study drug. AE Severity: Grade (Gr) 1=Mild, Gr 2=Moderate, Gr 3=Severe, Gr 4= Potentially Life-threatening or disabling (Division of AIDs Table, published December 2004). Baseline=within 50 days post screening, prior to start of study drug. 2 categories for death presented (on-treatment and enrolled/not treated).

    Time frame: Baseline to Week 96

  9. Number of Participants With Liver Function Test Laboratory Abnormalities - Treated Population

    Abnormalities were determined from laboratory measurements analyzed at the central or local laboratory. Division of AIDS Table (DAIDS) for Grading Severity of Adult and Pediatric AEs version (v) Dec 2004. Upper limit of normal (ULN): lower limit of normal (LLN), alanine transaminase (ALT); aspartate aminotransferase (AST); alkaline phosphatase (ALP). ALT Grade (Gr) 1: 1.25 to 2.5\*ULN; Gr 2: 2.6 to 5.0\*ULN; Gr 3: 5.1 to 10.0\*ULN; Gr 4: \>10.0\*ULN. AST Gr 1: 1.25 to 2.5\*ULN; Gr 2: 2.6 to 5.0\*ULN; Gr 3: 5.1 to 10.0\*ULN; Gr 4: \>10.0\*ULN. Total bilirubin Gr 1: 1.25 to 1.5\*ULN; Gr 2: 1.6 to 2.5\*ULN; Gr 3: 2.6 to 5.0\*ULN; Gr 4: \>5.0\*ULN. ALP (U/L) Gr 1: 1.25 to 2.5\*ULN, Gr 2: 2.6 to 5.0\*ULN, Gr 3: 5.1 to 10.0\*ULN, Gr 4: \>10.0\*ULN. Albumin (low) Gr 1: 3 grams per deciliter (g/dL) to \<LLN ; Gr 2: 2.0-2.9 g/dL; Gr 3: \< 2 g/dL. Gr 4: Not applicable. Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

    Time frame: Baseline to Week 96

  10. Number of Participants With Lipid and Glucose Laboratory Abnormalities - Treated Participants

    Abnormalities were determined from measurements analyzed at central or local laboratory. DAIDS Grading Severity of Adult and Pediatric AEs v Dec 2004. Total Cholesterol (fasting) Gr 1: 170 - 199 mg/dL; Gr 2: 200 - 300 mg/dL; Gr 3 \>300 mg/dL; Gr 4 Not Applicable(NA). LDL cholesterol, fasting: Gr 1: 110-129 mg/dL; Gr 2: 130-189 mg/dL; Gr 3 \>=190 mg/dL; Gr 4 NA. Triglycerides, fasting: Gr 1: NA; Gr 2 500-750 mg/dL; Gr 3: 751-1,200 mg/dL; Gr 4: \>1,200 mg/dL. Glucose, serum, high, fasting and (non-fasting): Gr 1: 110 - 125 (116-160) mg/dL; Gr 2: 126-250 (161- 250) mg/dL; Gr 3: 251-500 (251-500) mg/dL; Gr 4: \>500 (\> 500) mg/dL. Glucose, serum, low, \>=1 month of age (\<1 month): Gr 1: 55-64 (50-54) mg/dL; Gr 2: 40-54 (40-49) mg/dL; Gr 3: 30-39 (30-39) mg/dL; Gr 4: \<30 (\<30) mg/dL. Baseline: within 50 days after the screening visit and was prior to start of study medication (Week 1). Only those in 4th arm were old enough to fast prior to testing; other arms did not have fasting samples taken.

    Time frame: Baseline to Week 96

  11. Number of Participants With Serum Chemistry Abnormalities - Treated Participants

    Central/local laboratory. DAIDS v 2004. Bicarbonate, low: Gr 1: 16 milliequivalents per liter (mEq/L) - \< LLN; Gr 2: 11.0-15.9 mEq/L; Gr 3: 8.0-10.9 mEq/L; Gr 4: \<8.0 mEq/L; calcium, high Gr 1: 10.6-11.5 mg/dL; Gr 2: 11.6-12.5 mg/dL; Gr 3 12.6-13.5 mg/dL; Gr 4: \>13.5 mg/dL; calcium, low Gr1: 7.8-8.4 mg/dL; Gr2: 7.0-7.7 mg/dL; Gr3: 6.1-6.9 mg/dL; Gr 4: \<6.1 mg/dL; creatinine Gr1: 1.1-1.3\*ULN; Gr 2: 1.4-1.8\*ULN; Gr 3: 1.9-3.4\*ULN; Gr 4: \>=3.5\*ULN; lipase Gr 1: 1.1-1.5\*ULN; Gr 2: 1.6-3.0\*ULN; Gr 3: 3.1-5.0\*ULN; Gr 4: \>5.0\*ULN; potassium high (low) Gr 1: 5.6-6.0 (3.0-3.4) mEq/L; Gr 2: 6.1-6.5 (2.5-2.9) mEq/L; Gr 3: 6.6-7.0 (2.0-2.4) mEq/L; Gr 4: \>7.0 (\<2.0) mEq/L; sodium, high (low) Gr 1: 146-150 (130-135) mEq/L; Gr 2: 151-154 (125-129) mEq/L; Gr 3: 155-159 (121-124) mEq/L; Gr 4: \>=160 (\<=120) mEq/L; uric acid Gr 1: 7.5-10.0 mg/dL; Gr 2: 10.1-12.0 mg/dL; Gr 3: 12.1-15.0 mg/dL; Gr 4: \>15.0 mg/dL. Baseline within 50 days post screening, prior to start of study medication.

    Time frame: Baseline to Week 96

  12. Number of Participants With Hematologic Abnormalities - Treated Participants

    Abnormalities were determined from laboratory measurements analyzed at the central or local laboratory. DAIDS DAIDS Grading Severity of Adult and Pediatric AEs v Dec 2004. Hemoglobin Gr 1: 8.5-10.0 g/dL; Gr 2: 7.5-8.4 g/dL; Gr 3: 6.50-7.4 g/dL; Gr 4: \<6.5 g/dL; Platelets, decreased: Gr 1: 100.000-124.999\*10\^9/L; Gr 2: 50.000-99.999\*10\^9/L; Gr 3: 25.000-49.999\*10\^9/L; Gr 4: \<25.000\*10\^9/L; White blood cell count (WBC) decreased Gr 1: 2.000-2.500\*10\^9/L; Gr 2: 1.500-1.999\*10\^9/L; Gr 3: 1.000-1.499\*10\^9/L; Gr 4: \<1.000\*10\^9/L. Baseline visit was within 50 days post screening and was prior to start of study drug (Week 1).

    Time frame: Baseline to Week 96

  13. Number of Treated Participants With Resistance Associated Genotypic and Phenotypic Changes in Viruses - Participants With Virologic Failure, Lack of Suppression or Viral Load Rebound

    At baseline, treatment-naïve screened by genotype; treatment-experienced screened by genotype and phenotype. Genotypic resistance: presence of substitutions in reverse transcriptase (RT) gene and/or presence of mutations that confer resistance to nucleoside reverse transcriptase inhibitor class. Phenotype resistance: FTC: \> 3.1\* the 50% inhibitory concentration (IC50) of the control strain; EFV: \> 3.3\* IC50 ; ddI: \> 2.6\*IC50. Virologic failure: \<1 log10 decrease in HIV RNA from Week 16 on; confirmatory HIV RNA within 14-35 days; HIV RNA \> 10,000 c/mL with prior value \< 400 c/mL; confirmatory HIV RNA 14-35 days. Monogram Biosciences Phenosense™ assay ( EFV and FTC: biologic cutoffs=3 and 3.5, respectively; ddI: clinical cutoff: lower limit=1.39; upper limit = 2.2.); VircoTYPE™ HIV-1 v 4.3.01( EFV, FTC: biologic cutoffs=3.3 and 3.1, respectively;ddI: clinical cutoff: lower limit = 0.9; upper limit = 2.6. No genotypic/phenotypic changes in presence of virologic failure=no resistance.

    Time frame: Baseline to Week 48

  14. Number of Participants With Acquisition of Resistance to EFV Categorized by AUC Relationship - Evaluable Pharmacokinetic Population

    PK parameters were evaluated 2 weeks post start of dosing. Based on observed AUC, measured in micromoles (μM)\*h, dosing was increased, remained the same, or decreased at next visit to achieve the desired AUC (110-380 μM\*h). Number of participants who became resistant was categorized by those who required additional dosing after Week 2 (AUC\<110 μM\*h) and those who did not. AUC: derived from plasma concentration of EFV versus time. Plasma concentrations for determination of AUC were obtained using a validated LC-MS/MS method. LLOQ for EFV = 10.0 ng/mL and ULOQ = 8,000 ng/mL. AUC calculated by log- and linear trapezoidal summations. Genotypic resistance=presence of substitutions in the RT gene and/or presence of mutations that confer resistance to entire nucleoside reverse transcriptase inhibitor class. Phenotypic resistance=EFV: \> 3.3\* IC50 of control strain. Assays: Monogram Biosciences Phenosense™ GT (EFV biologic cutoff=3) and VircoTYPE™ HIV-1 v 4.3.01( EFV biologic cutoff=3.3).

    Time frame: Baseline to Week 48

  15. Cmax and Cmin of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

    Cmax and Cmin were derived from plasma concentration versus time. Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. All reportable Cmin values were \<LLOQ in all age groups except \>=6 months to \< 2 years (Group 2); LLOQ/2 was imputed for those summary statistics;in Group 2, 9 of 10 Cmin values were \<LLOQ; LLOQ/2 was imputed for those samples for summary statistics. The lower limit of quantification (LLOQ) for ddI was 2.50 nanograms per milliliter (ng/mL). Cmax and Cmin were recorded directly from experimental observations. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. Cmax and Cmin were measured in ng/mL.

    Time frame: Week 2

  16. AUC (TAU) of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

    Plasma concentrations were obtained using a validated LC-MS/MS at Week 2. The lower limit of quantification (LLOQ) for ddI was 2.50 nanograms per milliliter (ng/mL). AUC(TAU) was calculated by log- and linear trapezoidal summations. If a concentration was \< LLOQ at time TAU, the value of the concentration at time TAU was estimated using the quotient of the last quantifiable concentration and λ. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters summarized using geometric means. AUC(TAU) was measured in nanograms\*time per milliliter (ng•h/mL).

    Time frame: Week 2

  17. CLT/F of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

    Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. The LLOQ for ddI was 2.50 nanograms per milliliter (ng/mL). CLT/F was calculated by dividing the dose of ddI by AUC(TAU) of ddI. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F was measured in liters per hour (L/h).

    Time frame: Week 2

  18. CLT/F/kg of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

    Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. The LLOQ for ddI was 2.50 nanograms per milliliter (ng/mL). CLT/F/kg was calculated by dividing CLT/F by body weight in kilograms (kg). Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F/kg was measured in liters per hour per kilogram (L/h/kg).

    Time frame: Week 2

  19. Terminal Phase Elimination Half-life (T-HALF) in Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

    Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. The LLOQ for ddI was 2.50 nanograms per milliliter (ng/mL). Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the T-HALF was summarized using a mean. Terminal elimination plasma half-life=ln2 divided by K where K is the absolute value of the slope of the terminal phase of the plasma profile as determined by log-linear regression of at least three data points. T-HALF was measured in hours (h).

    Time frame: Week 2

  20. The Number of Participants With Plasma HIV RNA Levels < 400 c/mL at Weeks 60, 72, 84 and 96 (Observed Cases) - All Treated Participants

    Virologic Response - Observed Cases (VR-OC): participants were responders at a specific week according to a single on-treatment HIV RNA \< 400 c/mL closest to the planned visit and within the predefined visit window; those on treatment and missing their specific week measurement were responders only if previous and subsequent measurements to that week visit window were \< 400 c/mL; denominator was all who remained on treatment through the specific week.

    Time frame: Weeks 60, 72, 84, and 96

  21. The Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Weeks 60, 72, 84 and 96 (Observed Cases) - All Treated Participants

    Virologic Response - Observed Cases (VR-OC): participants were responders at a specific week according to a single on-treatment HIV RNA \< 50 c/mL closest to the planned visit and within the predefined visit window; those on treatment and missing their specific week measurement were responders only if previous and subsequent measurements to that week visit window were \< 50 c/mL; denominator was all who remained on treatment through the specific week.

    Time frame: Weeks 60, 72, 84, and 96

  22. Log10 c/mL HIV RNA Changes From Baseline at Weeks 60, 72, 84 and 96 - Treated Participants

    HIV RNA measured as log10 copies per milliliter (c/mL) plasma. HIV RNA values ≥ 1,000 c/mL were considered evidence of infection. A decrease in number of c/mL is an improvement for the participant. HIV RNA was first measured using the ultrasensitive and standard Roche Amplicor PCR, version 1.5, and then the method of measurement was switched to the COBAS AmpliPrep/COBAS TaqMan HIV IVD method. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

    Time frame: Baseline through Weeks 60, 72, 84, and 96

  23. CD4 Cell Count Change From Baseline at Weeks 60, 72, 84, and 96 - Treated Participants

    A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeters to the third power (cells/mm\^3). An increase from baseline in the number of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

    Time frame: Baseline to Weeks 60, 72, 84, and 96

  24. Percent of CD4 Cells Change From Baseline at Weeks 60, 72, 84, and 96 - Treated Participants

    A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeter to the third power (cells/mm\^3). Percent of CD4 cells is the number of CD4 cells per total number of cells measured\*100. An increase in the percent of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

    Time frame: Baseline to Weeks 60, 72, 84, and 96

07

Results

Posted Apr 11, 2014

Participant flow

This study initiated February 2007 and completed July 2013. All participants enrolled in countries where efavirenz (EFV) oral solution was not commercially available could remain on study until their 7th birthday or until they were able to swallow EFV capsules (whichever occurred first).

Participant flow — Overall Study
MilestoneEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
Started151048
Completed7505
Not completed8543
Withdrew: Adverse event2000
Withdrew: Death1010
Withdrew: Lack of efficacy3311
Withdrew: Lost to follow-up1020
Withdrew: Poor or non-compliance1101
Withdrew: No longer meets criteria0001
Withdrew: Withdrawal by subject0100

Outcome measures

PrimaryMaximum Observed Plasma Concentration (Cmax) and Plasma Concentration 24 Hours Post-dose (Cmin) of EFV at Week 2 - Pharmacokinetic Evaluable Population

Cmax and Cmin were derived from plasma concentrations versus time using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. Cmax and Cmin were recorded directly from experimental observations. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. Cmax and Cmin were measured in ng/mL.

Time frame:
Week 2
Reported as:
Geometric mean · ng/mL
Maximum Observed Plasma Concentration (Cmax) and Plasma Concentration 24 Hours Post-dose (Cmin) of EFV at Week 2 - Pharmacokinetic Evaluable Population
ng/mLEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
Cmax3790 ± 761998 ± 512167 ± 682632 ± 83
Cmin391 ± 141445 ± 57648 ± 751185 ± 111
SecondaryThe Number of Participants With Plasma HIV RNA < 400 Copies Per Milliliter (c/mL) at Week 48 as Analyzed by Different Algorithms - All Treated Participants

Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 400 c/mL at Week 48; participants were failures if virologic rebound occurred at or before Week 48; therapy discontinued before Week 48; no response by Week 48, or missing HIV RNA at Week 48 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 400 c/mL closest to the planned Week 48 visit and within the predefined Week 48 visit window; those on treatment and missing their Week 48 measurement were responders only if previous and subsequent measurements to the Week 48 visit window were \< 400 c/mL; denominator was all who remained on treatment through Week 48. Snapshot: participants were responders according to the last on-treatment HIV RNA \< 400 c/mL in the predefined Week 48 visit window; denominator was all treated participants.

Time frame:
Week 48
Reported as:
Number · participants
The Number of Participants With Plasma HIV RNA < 400 Copies Per Milliliter (c/mL) at Week 48 as Analyzed by Different Algorithms - All Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal Participants
CVR (NC=F) n=15, 10, 4, 8, 37763521
VR-OC n=9, 9, 3, 6, 27763521
SNAPSHOT n=15, 10, 4, 8, 37763521
SecondaryThe Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Week 48 as Analyzed by Different Algorithms - All Treated Participants

Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 50 c/mL at Week 48; participants were failures if virologic rebound occurred at or before Week 48; therapy discontinued before Week 48; no response by Week 48, or missing HIV RNA at Week 48 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 50 c/mL closest to the planned Week 48 visit and within the predefined Week 48 visit window; those on treatment and missing their Week 48 measurement were responders only if previous and subsequent measurements to the Week 48 visit window were \< 50 c/mL; denominator was all who remained on treatment through Week 48. Snapshot: participants were responders according to the last on-treatment HIV RNA \< 50 c/mL in the predefined Week 48 visit window; denominator was all treated participants.

Time frame:
Week 48
Reported as:
Number · participants
The Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Week 48 as Analyzed by Different Algorithms - All Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
CVR (NC=F) n=15, 10, 4, 8, 37662418
VR-OC n=9, 9, 3, 6, 27652417
SNAPSHOT n=15, 10, 4, 8, 37652417
SecondaryThe Number of Participants With Plasma HIV RNA Levels < 400 c/mL at Week 24 as Analyzed by Different Algorithms - All Treated Participants

Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 400 c/mL at Week 24; participants were failures if virologic rebound occurred at or before Week 24; therapy discontinued before Week 24; no response by Week 24, or missing HIV RNA at Week 24 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 400 c/mL closest to the planned Week 24 visit and within the predefined Week 24 visit window; those on treatment and missing their Week 24 measurement were responders only if previous and subsequent measurements to the Week 24 visit window were \< 400 c/mL; denominator was all who remained on treatment through Week 24.

Time frame:
Week 24
Reported as:
Number · participants
The Number of Participants With Plasma HIV RNA Levels < 400 c/mL at Week 24 as Analyzed by Different Algorithms - All Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
CVR (n=15, 10, 4, 8, 37)874726
VR-OC(n=11,10 ,4, 7, 32)874625
SecondaryThe Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Week 24 as Analyzed by Different Algorithms - All Treated Participants

Algorithms: Confirmed Virologic Response (CVR) non-completer = failure (NC = F): participants were responders if they achieved confirmed HIV RNA \< 50 c/mL at Week 24; participants were failures if virologic rebound occurred at or before Week 24; therapy discontinued before Week 24; no response by Week 24, or missing HIV RNA at Week 24 and beyond. Virologic Response - Observed Cases (VR-OC): participants were responders according to a single on-treatment HIV RNA \< 50 c/mL closest to the planned Week 24 visit and within the predefined Week 24 visit window; those on treatment and missing their Week 24 measurement were responders only if previous and subsequent measurements to the Week 24 visit window were \< 50 c/mL; denominator was all who remained on treatment through Week 24.

Time frame:
Week 24
Reported as:
Number · participants
The Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Week 24 as Analyzed by Different Algorithms - All Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
CVR (n=15, 10, 4, 8, 37)443415
VR-OC (n=11, 10, 4, 7, 32)552416
SecondaryLog10 c/mL HIV RNA Changes From Baseline Through Week 48 - Treated Participants

HIV RNA measured as log10 copies per milliliter (c/mL) plasma. HIV RNA values ≥ 1,000 c/mL were considered evidence of infection. A decrease in number of c/mL is an improvement for the participant. HIV RNA was first measured using the ultrasensitive and standard Roche Amplicor PCR, version 1.5, and then the method of measurement was switched to the COBAS AmpliPrep/COBAS TaqMan HIV IVD method. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

Time frame:
Baseline through Week 48
Reported as:
Median · log10 c/mL
Log10 c/mL HIV RNA Changes From Baseline Through Week 48 - Treated Participants
log10 c/mLEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Baseline (n=13,10,4,7,34)5.88 (5.12 to 5.92)5.88 (5.32 to 5.88)5.88 (5.38 to 5.88)5.50 (4.64 to 5.88)5.88 (4.97 to 5.88)
Week 2 (n=12, 9, 4, 5, 30)-1.89 ± 0.270-2.26 ± 0.278-2.42 ± 0.496-1.93 ± 0.277-2.11 ± 0.162
Week 4 (n=11, 8, 4, 6, 29)-2.18 ± 0.372-2.49 ± 0.308-2.86 ± 0.160-3.04 ± 0.343-2.63 ± 0.195
Week 8 (n=11, 10, 3, 7, 31)-2.73 ± 0.412-2.91 ± 0.366-2.92 ± 0.070-3.27 ± 0.338-2.92 ± 0.209
Week 12 (n=10, 10, 3, 6, 29)-2.48 ± 0.541-3.19 ± 0.431-4.02 ± 0.310-3.31 ± 0.362-3.14 ± 0.261
Week 16 (n=10, 10, 4, 7, 31)-2.72 ± 0.527-3.17 ± 0.496-4.11 ± 0.240-3.44 ± 0.326-3.27 ± 0.253
Week 24 (n=10, 9, 3, 7, 29)-3.46 ± 0.610-3.92 ± 0.525-4.18 ± 0.585-2.95 ± 0.372-3.28 ± 0.278
Week 32 (n=9, 9, 4, 6, 28)-2.75 ± 0.547-3.28 ± 0.506-3.73 ± 0.276-2.93 ± 0.461-3.27 ± 0.259
Week 40 (n=7, 9, 4 ,6, 26)-4.01 ± 0.434-4.17 ± 0.435-4.02 ± 0.236-2.93 ± 0.620-3.93 ± 0.240
Week 48 (n=9, 9, 3, 6, 27)-2.92 ± 0.551-3.27 ± 0.469-3.27 ± 0.320-2.93 ± 0.622-3.18 ± 0.271
SecondaryCD4 Cell Count Change From Baseline at Weeks 24 and 48 - Treated Participants

A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeters to the third power (cells/mm\^3). An increase from baseline in the number of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

Time frame:
Baseline to Weeks 24 and 48
Reported as:
Median · cells/mm^3
CD4 Cell Count Change From Baseline at Weeks 24 and 48 - Treated Participants
cells/mm^3EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Baseline (n=10, 9, 3, 6, 28)1518 (829 to 2202)1569 (1149 to 2284)517 (129 to 558)413 (23 to 688)1144 (529 to 1930)
Week 24 (n=6, 7, 3, 6, 22)259 ± 410.882 ± 33031 ± 818.3283 ± 195.2177 ± 185.3
Week 48 (n=7, 8, 2, 5, 22)-258 ± 401.5346 ± 381.8971 ± 956.0284 ± 296.8196 ± 220.8
SecondaryPercent of CD4 Cells Change From Baseline at Weeks 24 and 48 - Treated Participants

A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeter to the third power (cells/mm\^3). Percent of CD4 cells is the number of CD4 cells per total number of cells measured\*100. An increase in the percent of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

Time frame:
Baseline to Weeks 24 and 48
Reported as:
Median · percentage of CD4 cells
Percent of CD4 Cells Change From Baseline at Weeks 24 and 48 - Treated Participants
percentage of CD4 cellsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Baseline (n=7, 9, 3, 5, 24)28 (17 to 40)26 (25 to 28)12 (5 to 20)7 (2 to 23)24 (14 to 28)
Week 24 (n=3, 7, 3, 5, 18)14 ± 12.02 ± 2.89 ± 3.210 ± 4.29 ± 2.3
Week 48 (n=5, 8, 2, 5, 20)5 ± 4.54 ± 3.58 ± 8.911 ± 2.96 ± 2.1
PrimaryArea Under the Plasma Concentration Time Curve (AUC) Over One Dosing Interval From Time Zero to 24 Hours Post-dose(TAU) at Week 2 - Pharmacokinetic Evaluable Population

Plasma concentrations were obtained using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. AUC(TAU) was calculated by log- and linear trapezoidal summations. If a concentration was \< LLOQ at time TAU, the value of the concentration at time TAU was estimated using the quotient of the last quantifiable concentration and λ. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters summarized using geometric means. AUC(TAU) was measured in micromolars\*time (µM•h).

Time frame:
Week 2
Reported as:
Geometric mean · µM•h
Area Under the Plasma Concentration Time Curve (AUC) Over One Dosing Interval From Time Zero to 24 Hours Post-dose(TAU) at Week 2 - Pharmacokinetic Evaluable Population
µM•hEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
Area Under the Plasma Concentration Time Curve (AUC) Over One Dosing Interval From Time Zero to 24 Hours Post-dose(TAU) at Week 2 - Pharmacokinetic Evaluable Population129.5 ± 9871.4 ± 4993.8 ± 68130.8 ± 98
PrimaryApparent Oral Clearance (CLT/F) of EFV at Week 2 - Pharmacokinetic Evaluable Population

Plasma concentrations of EFV were obtained using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. CLT/F was calculated by dividing the dose of EFV by AUC(TAU) of EFV. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F was measured in liters per hour (L/h).

Time frame:
Week 2
Reported as:
Geometric mean · L/h
Apparent Oral Clearance (CLT/F) of EFV at Week 2 - Pharmacokinetic Evaluable Population
L/hEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
Apparent Oral Clearance (CLT/F) of EFV at Week 2 - Pharmacokinetic Evaluable Population9.54 ± 6319.69 ± 8513.16 ± 589.11 ± 73
PrimaryApparent Oral Clearance Adjusted for Body Weight (CLT/F/kg) of EFV at Week 2 - Pharmacokinetic Evaluable Population

Plasma concentrations of EFV were determined using a validated liquid chromatography tandem mass spectrometry method (LC-MS/MS). The lower limit of quantification (LLOQ) for EFV was 10.0 nanograms per milliliter (ng/mL) and the upper limit of quantification (ULOQ) was 8,000 ng/mL. CLT/F/kg was calculated by dividing CLT/F by body weight in kilograms (kg). Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F/kg was measured in liters per hour per kilogram (L/h/kg).

Time frame:
Week 2
Reported as:
Geometric mean · L/h/kg
Apparent Oral Clearance Adjusted for Body Weight (CLT/F/kg) of EFV at Week 2 - Pharmacokinetic Evaluable Population
L/h/kgEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
Apparent Oral Clearance Adjusted for Body Weight (CLT/F/kg) of EFV at Week 2 - Pharmacokinetic Evaluable Population2.07 ± 712.36 ± 841.44 ± 510.66 ± 72
SecondaryNumber of Participants With On-Treatment Adverse Events (AEs), Related Adverse Events, Serious Adverse Events (SAEs), Death, Discontinuation Due to Adverse Events, and CDC Class C AIDS Events

Center for Disease Control and Prevention (CDC) classification of Class C events used to define acquired immunodeficiency syndrome (AIDS): include pneumocystis pneumonia, pneumonia, pulmonary tuberculosis. AE=new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. SAE=medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. Treatment-related=having certain, probable, possible, or missing relationship to study drug. AE Severity: Grade (Gr) 1=Mild, Gr 2=Moderate, Gr 3=Severe, Gr 4= Potentially Life-threatening or disabling (Division of AIDs Table, published December 2004). Baseline=within 50 days post screening, prior to start of study drug. 2 categories for death presented (on-treatment and enrolled/not treated).

Time frame:
Baseline to Week 96
Reported as:
Number · participants
Number of Participants With On-Treatment Adverse Events (AEs), Related Adverse Events, Serious Adverse Events (SAEs), Death, Discontinuation Due to Adverse Events, and CDC Class C AIDS Events
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Death (Treated Participants)10102
Deaths (Enrolled Participants, Not treated)20002
SAE (Treated Participants)854320
AE (All Grades,Treated Participants)1394632
Grade 2 - 4 AEs (Treated Participants)1174527
Grade 3 - 4 AEs (Treated Participants)423110
Related AE (All Grades,Treated Participants)854421
Discontinued due to AE (Treated Participants)20002
CDC Class C AIDS event (Treated Participants)11002
SecondaryNumber of Participants With Liver Function Test Laboratory Abnormalities - Treated Population

Abnormalities were determined from laboratory measurements analyzed at the central or local laboratory. Division of AIDS Table (DAIDS) for Grading Severity of Adult and Pediatric AEs version (v) Dec 2004. Upper limit of normal (ULN): lower limit of normal (LLN), alanine transaminase (ALT); aspartate aminotransferase (AST); alkaline phosphatase (ALP). ALT Grade (Gr) 1: 1.25 to 2.5\*ULN; Gr 2: 2.6 to 5.0\*ULN; Gr 3: 5.1 to 10.0\*ULN; Gr 4: \>10.0\*ULN. AST Gr 1: 1.25 to 2.5\*ULN; Gr 2: 2.6 to 5.0\*ULN; Gr 3: 5.1 to 10.0\*ULN; Gr 4: \>10.0\*ULN. Total bilirubin Gr 1: 1.25 to 1.5\*ULN; Gr 2: 1.6 to 2.5\*ULN; Gr 3: 2.6 to 5.0\*ULN; Gr 4: \>5.0\*ULN. ALP (U/L) Gr 1: 1.25 to 2.5\*ULN, Gr 2: 2.6 to 5.0\*ULN, Gr 3: 5.1 to 10.0\*ULN, Gr 4: \>10.0\*ULN. Albumin (low) Gr 1: 3 grams per deciliter (g/dL) to \<LLN ; Gr 2: 2.0-2.9 g/dL; Gr 3: \< 2 g/dL. Gr 4: Not applicable. Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

Time frame:
Baseline to Week 96
Reported as:
Number · participants
Number of Participants With Liver Function Test Laboratory Abnormalities - Treated Population
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Albumin (n=12, 10, 4, 7, 33)00101
ALP (n=12, 10, 4, 7, 33)822517
ALT (n=12, 10, 4, 7, 33)732012
AST (n=12, 10, 4, 7, 33)811010
SecondaryNumber of Participants With Lipid and Glucose Laboratory Abnormalities - Treated Participants

Abnormalities were determined from measurements analyzed at central or local laboratory. DAIDS Grading Severity of Adult and Pediatric AEs v Dec 2004. Total Cholesterol (fasting) Gr 1: 170 - 199 mg/dL; Gr 2: 200 - 300 mg/dL; Gr 3 \>300 mg/dL; Gr 4 Not Applicable(NA). LDL cholesterol, fasting: Gr 1: 110-129 mg/dL; Gr 2: 130-189 mg/dL; Gr 3 \>=190 mg/dL; Gr 4 NA. Triglycerides, fasting: Gr 1: NA; Gr 2 500-750 mg/dL; Gr 3: 751-1,200 mg/dL; Gr 4: \>1,200 mg/dL. Glucose, serum, high, fasting and (non-fasting): Gr 1: 110 - 125 (116-160) mg/dL; Gr 2: 126-250 (161- 250) mg/dL; Gr 3: 251-500 (251-500) mg/dL; Gr 4: \>500 (\> 500) mg/dL. Glucose, serum, low, \>=1 month of age (\<1 month): Gr 1: 55-64 (50-54) mg/dL; Gr 2: 40-54 (40-49) mg/dL; Gr 3: 30-39 (30-39) mg/dL; Gr 4: \<30 (\<30) mg/dL. Baseline: within 50 days after the screening visit and was prior to start of study medication (Week 1). Only those in 4th arm were old enough to fast prior to testing; other arms did not have fasting samples taken.

Time frame:
Baseline to Week 96
Reported as:
Number · participants
Number of Participants With Lipid and Glucose Laboratory Abnormalities - Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Total Cholesterol (n=9,10,4,0,23)241NA7
Total Cholesterol Fasting (n=0,0,0,7,7)NANANA11
Glucose High (n=11,10,3,0,24)100NA1
Glucose Low (n=11,10,3,0,24)210NA3
Glucose High Fasting (n=0,0,0,7,7)NANANA11
LDL cholesterol (n=9,10,4,0,23)040NA4
LDL cholesterol fasting (n=0,0,0,7,7)NANANA11
SecondaryNumber of Participants With Serum Chemistry Abnormalities - Treated Participants

Central/local laboratory. DAIDS v 2004. Bicarbonate, low: Gr 1: 16 milliequivalents per liter (mEq/L) - \< LLN; Gr 2: 11.0-15.9 mEq/L; Gr 3: 8.0-10.9 mEq/L; Gr 4: \<8.0 mEq/L; calcium, high Gr 1: 10.6-11.5 mg/dL; Gr 2: 11.6-12.5 mg/dL; Gr 3 12.6-13.5 mg/dL; Gr 4: \>13.5 mg/dL; calcium, low Gr1: 7.8-8.4 mg/dL; Gr2: 7.0-7.7 mg/dL; Gr3: 6.1-6.9 mg/dL; Gr 4: \<6.1 mg/dL; creatinine Gr1: 1.1-1.3\*ULN; Gr 2: 1.4-1.8\*ULN; Gr 3: 1.9-3.4\*ULN; Gr 4: \>=3.5\*ULN; lipase Gr 1: 1.1-1.5\*ULN; Gr 2: 1.6-3.0\*ULN; Gr 3: 3.1-5.0\*ULN; Gr 4: \>5.0\*ULN; potassium high (low) Gr 1: 5.6-6.0 (3.0-3.4) mEq/L; Gr 2: 6.1-6.5 (2.5-2.9) mEq/L; Gr 3: 6.6-7.0 (2.0-2.4) mEq/L; Gr 4: \>7.0 (\<2.0) mEq/L; sodium, high (low) Gr 1: 146-150 (130-135) mEq/L; Gr 2: 151-154 (125-129) mEq/L; Gr 3: 155-159 (121-124) mEq/L; Gr 4: \>=160 (\<=120) mEq/L; uric acid Gr 1: 7.5-10.0 mg/dL; Gr 2: 10.1-12.0 mg/dL; Gr 3: 12.1-15.0 mg/dL; Gr 4: \>15.0 mg/dL. Baseline within 50 days post screening, prior to start of study medication.

Time frame:
Baseline to Week 96
Reported as:
Number · participants
Number of Participants With Serum Chemistry Abnormalities - Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Bicarbonate, low (n=12, 10, 4, 7, 33)1094528
Sodium, low (n=12, 10, 4, 7, 33)542415
Sodium High (n=12, 10, 4, 7, 33)11013
Uric Acid (n=12, 10, 4, 7, 33)01102
Calcium High (n= 12, 10, 4, 7, 33)02013
Calcium Low (n= 12, 10, 4, 7, 33)04116
Potassium High (n= 12, 10, 4, 7, 33)54009
Potassium Low (n= 12, 10, 4, 7, 33)10113
Lipase Total (n= 12, 10, 4, 7, 33)10023
SecondaryNumber of Participants With Hematologic Abnormalities - Treated Participants

Abnormalities were determined from laboratory measurements analyzed at the central or local laboratory. DAIDS DAIDS Grading Severity of Adult and Pediatric AEs v Dec 2004. Hemoglobin Gr 1: 8.5-10.0 g/dL; Gr 2: 7.5-8.4 g/dL; Gr 3: 6.50-7.4 g/dL; Gr 4: \<6.5 g/dL; Platelets, decreased: Gr 1: 100.000-124.999\*10\^9/L; Gr 2: 50.000-99.999\*10\^9/L; Gr 3: 25.000-49.999\*10\^9/L; Gr 4: \<25.000\*10\^9/L; White blood cell count (WBC) decreased Gr 1: 2.000-2.500\*10\^9/L; Gr 2: 1.500-1.999\*10\^9/L; Gr 3: 1.000-1.499\*10\^9/L; Gr 4: \<1.000\*10\^9/L. Baseline visit was within 50 days post screening and was prior to start of study drug (Week 1).

Time frame:
Baseline to Week 96
Reported as:
Number · participants
Number of Participants With Hematologic Abnormalities - Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Hemoglobin (n=11, 10, 4, 7, 32)452112
Platelet (n=11, 10, 4, 7, 32)11002
Neutrophils (n=11, 10, 4, 7, 32)720110
SecondaryNumber of Treated Participants With Resistance Associated Genotypic and Phenotypic Changes in Viruses - Participants With Virologic Failure, Lack of Suppression or Viral Load Rebound

At baseline, treatment-naïve screened by genotype; treatment-experienced screened by genotype and phenotype. Genotypic resistance: presence of substitutions in reverse transcriptase (RT) gene and/or presence of mutations that confer resistance to nucleoside reverse transcriptase inhibitor class. Phenotype resistance: FTC: \> 3.1\* the 50% inhibitory concentration (IC50) of the control strain; EFV: \> 3.3\* IC50 ; ddI: \> 2.6\*IC50. Virologic failure: \<1 log10 decrease in HIV RNA from Week 16 on; confirmatory HIV RNA within 14-35 days; HIV RNA \> 10,000 c/mL with prior value \< 400 c/mL; confirmatory HIV RNA 14-35 days. Monogram Biosciences Phenosense™ assay ( EFV and FTC: biologic cutoffs=3 and 3.5, respectively; ddI: clinical cutoff: lower limit=1.39; upper limit = 2.2.); VircoTYPE™ HIV-1 v 4.3.01( EFV, FTC: biologic cutoffs=3.3 and 3.1, respectively;ddI: clinical cutoff: lower limit = 0.9; upper limit = 2.6. No genotypic/phenotypic changes in presence of virologic failure=no resistance.

Time frame:
Baseline to Week 48
Reported as:
Number · participants
Number of Treated Participants With Resistance Associated Genotypic and Phenotypic Changes in Viruses - Participants With Virologic Failure, Lack of Suppression or Viral Load Rebound
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Lack of suppression with Changes (PP)21003
Viral Load Rebound with Changes(PP)11002
Viral Failure with Changes (outside 35 day limit)03115
SecondaryNumber of Participants With Acquisition of Resistance to EFV Categorized by AUC Relationship - Evaluable Pharmacokinetic Population

PK parameters were evaluated 2 weeks post start of dosing. Based on observed AUC, measured in micromoles (μM)\*h, dosing was increased, remained the same, or decreased at next visit to achieve the desired AUC (110-380 μM\*h). Number of participants who became resistant was categorized by those who required additional dosing after Week 2 (AUC\<110 μM\*h) and those who did not. AUC: derived from plasma concentration of EFV versus time. Plasma concentrations for determination of AUC were obtained using a validated LC-MS/MS method. LLOQ for EFV = 10.0 ng/mL and ULOQ = 8,000 ng/mL. AUC calculated by log- and linear trapezoidal summations. Genotypic resistance=presence of substitutions in the RT gene and/or presence of mutations that confer resistance to entire nucleoside reverse transcriptase inhibitor class. Phenotypic resistance=EFV: \> 3.3\* IC50 of control strain. Assays: Monogram Biosciences Phenosense™ GT (EFV biologic cutoff=3) and VircoTYPE™ HIV-1 v 4.3.01( EFV biologic cutoff=3.3).

Time frame:
Baseline to Week 48
Reported as:
Number · participants
Number of Participants With Acquisition of Resistance to EFV Categorized by AUC Relationship - Evaluable Pharmacokinetic Population
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Resistant; AUC<110 µM•h(n=2,7,2,3,14)13116
Resistant; AUC>=110 µM•h(n=10,3,2,4,19)22004
SecondaryCmax and Cmin of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

Cmax and Cmin were derived from plasma concentration versus time. Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. All reportable Cmin values were \<LLOQ in all age groups except \>=6 months to \< 2 years (Group 2); LLOQ/2 was imputed for those summary statistics;in Group 2, 9 of 10 Cmin values were \<LLOQ; LLOQ/2 was imputed for those samples for summary statistics. The lower limit of quantification (LLOQ) for ddI was 2.50 nanograms per milliliter (ng/mL). Cmax and Cmin were recorded directly from experimental observations. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. Cmax and Cmin were measured in ng/mL.

Time frame:
Week 2
Reported as:
Geometric mean · ng/mL
Cmax and Cmin of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population
ng/mLEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
Cmax (n=12, 10, 4, 6)850 ± 481193 ± 39356 ± 69376 ± 93
Cmin (n=4, 10, 4, 3)1.25 ± 01.54 ± 1321.25 ± 01.25 ± 0
SecondaryAUC (TAU) of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

Plasma concentrations were obtained using a validated LC-MS/MS at Week 2. The lower limit of quantification (LLOQ) for ddI was 2.50 nanograms per milliliter (ng/mL). AUC(TAU) was calculated by log- and linear trapezoidal summations. If a concentration was \< LLOQ at time TAU, the value of the concentration at time TAU was estimated using the quotient of the last quantifiable concentration and λ. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters summarized using geometric means. AUC(TAU) was measured in nanograms\*time per milliliter (ng•h/mL).

Time frame:
Week 2
Reported as:
Geometric mean · ng•h/mL
AUC (TAU) of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population
ng•h/mLEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
AUC (TAU) of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population1445 ± 762848 ± 531038 ± 541000 ± 41
SecondaryCLT/F of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. The LLOQ for ddI was 2.50 nanograms per milliliter (ng/mL). CLT/F was calculated by dividing the dose of ddI by AUC(TAU) of ddI. Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F was measured in liters per hour (L/h).

Time frame:
Week 2
Reported as:
Geometric mean · L/h
CLT/F of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population
L/hEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
CLT/F of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population40.7 ± 11035.6 ± 42113.9 ± 111143.0 ± 53
SecondaryCLT/F/kg of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. The LLOQ for ddI was 2.50 nanograms per milliliter (ng/mL). CLT/F/kg was calculated by dividing CLT/F by body weight in kilograms (kg). Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the pharmacokinetic parameters were summarized using geometric means. CLT/F/kg was measured in liters per hour per kilogram (L/h/kg).

Time frame:
Week 2
Reported as:
Geometric mean · L/h/kg
CLT/F/kg of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population
L/h/kgEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
CLT/F/kg of Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population7.88 ± 854.26 ± 3011.36 ± 11610.34 ± 70
SecondaryTerminal Phase Elimination Half-life (T-HALF) in Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population

Plasma concentrations for ddI were determined using a validated LC/MS/MS assay. The LLOQ for ddI was 2.50 nanograms per milliliter (ng/mL). Blood samples were collected before study drug administration and at 0.5, 1, 3, 5, 8, and 24 hours after study drug administration from an indwelling catheter or by direct venipuncture and the T-HALF was summarized using a mean. Terminal elimination plasma half-life=ln2 divided by K where K is the absolute value of the slope of the terminal phase of the plasma profile as determined by log-linear regression of at least three data points. T-HALF was measured in hours (h).

Time frame:
Week 2
Reported as:
Mean · h
Terminal Phase Elimination Half-life (T-HALF) in Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population
hEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 Years
Terminal Phase Elimination Half-life (T-HALF) in Didanosine (ddI) at Week 2 - Pharmacokinetic Evaluable Population0.92 ± 0.13741.41 ± 0.8591.73 ± 1.0071.14 ± 0.214
SecondaryThe Number of Participants With Plasma HIV RNA Levels < 400 c/mL at Weeks 60, 72, 84 and 96 (Observed Cases) - All Treated Participants

Virologic Response - Observed Cases (VR-OC): participants were responders at a specific week according to a single on-treatment HIV RNA \< 400 c/mL closest to the planned visit and within the predefined visit window; those on treatment and missing their specific week measurement were responders only if previous and subsequent measurements to that week visit window were \< 400 c/mL; denominator was all who remained on treatment through the specific week.

Time frame:
Weeks 60, 72, 84, and 96
Reported as:
Number · participants
The Number of Participants With Plasma HIV RNA Levels < 400 c/mL at Weeks 60, 72, 84 and 96 (Observed Cases) - All Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Week 60 (n=7, 8, 3, 4, 22)762419
Week 72 (n=7, 7, 2, 4, 20)751417
Week 84 (n=7, 7, 2, 4, 20)751417
Week 96 (n=7, 6, 2, 4, 19)751417
SecondaryThe Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Weeks 60, 72, 84 and 96 (Observed Cases) - All Treated Participants

Virologic Response - Observed Cases (VR-OC): participants were responders at a specific week according to a single on-treatment HIV RNA \< 50 c/mL closest to the planned visit and within the predefined visit window; those on treatment and missing their specific week measurement were responders only if previous and subsequent measurements to that week visit window were \< 50 c/mL; denominator was all who remained on treatment through the specific week.

Time frame:
Weeks 60, 72, 84, and 96
Reported as:
Number · participants
The Number of Participants With Plasma HIV RNA Levels < 50 c/mL at Weeks 60, 72, 84 and 96 (Observed Cases) - All Treated Participants
participantsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Week 60 (n=7, 8, 3, 4, 22)452314
Week 72 (n=7, 7, 2, 4, 20)751417
Week 84 (n=7, 7, 2, 4, 20)751316
Week 96 (n=7, 6, 2, 4, 19)650415
SecondaryLog10 c/mL HIV RNA Changes From Baseline at Weeks 60, 72, 84 and 96 - Treated Participants

HIV RNA measured as log10 copies per milliliter (c/mL) plasma. HIV RNA values ≥ 1,000 c/mL were considered evidence of infection. A decrease in number of c/mL is an improvement for the participant. HIV RNA was first measured using the ultrasensitive and standard Roche Amplicor PCR, version 1.5, and then the method of measurement was switched to the COBAS AmpliPrep/COBAS TaqMan HIV IVD method. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

Time frame:
Baseline through Weeks 60, 72, 84, and 96
Reported as:
Median · log10 c/mL
Log10 c/mL HIV RNA Changes From Baseline at Weeks 60, 72, 84 and 96 - Treated Participants
log10 c/mLEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Baseline (n=13,10,4,7,34)5.88 (5.12 to 5.92)5.88 (5.32 to 5.88)5.88 (5.38 to 5.88)5.50 (4.64 to 5.88)5.88 (4.97 to 5.88)
Week 60 (n=7, 8, 3, 4, 22)-3.92 ± 0.458-3.44 ± 0.539-3.26 ± 0.322-3.48 ± 0.575-3.50 ± 0.259
Week 72 (n=7, 6, 1, 3, 17)-4.08 ± 0.438-2.75 ± 0.603-3.20 ± NA-4.18 ± 0.410-3.45 ± 0.290
Week 84 (n=7, 7, 2, 4, 20)-4.08 ± 0.438-3.28 ± 0.563-2.18 ± 1.022-3.51 ± 0.583-3.37 ± 0.283
Week 96 (n=7, 6, 2, 4, 19)-3.82 ± 0.423-3.73 ± 0.686-2.15 ± 0.848-3.57 ± 0.597-3.45 ± 0.296
SecondaryCD4 Cell Count Change From Baseline at Weeks 60, 72, 84, and 96 - Treated Participants

A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeters to the third power (cells/mm\^3). An increase from baseline in the number of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

Time frame:
Baseline to Weeks 60, 72, 84, and 96
Reported as:
Median · cells/mm^3
CD4 Cell Count Change From Baseline at Weeks 60, 72, 84, and 96 - Treated Participants
cells/mm^3EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Baseline (n=10,9,3,6,28)1518 (829 to 2202)1569 (1149 to 2284)517 (129 to 558)413 (23 to 688)1144 (529 to 1930)
Week 60 (n=6, 6, 2,3,17)-870 (-1331 to -315)-914 (-1509 to 725)580 (-11 to 1171)676 (506 to 887)-315 (-1331 to 676)
Week 72 (n=5, 7, 1, 3, 16)-1178 (-1422 to -588)234 (-1540 to 624)-50 (-50 to -50)620 (619 to 811)92 (-1300 to 620)
Week 84 (n=6, 7, 1, 3, 17)-937 (-1331 to -155)59 (-1416 to 316)101 (101 to 101)497 (339 to 722)59 (-1304 to 334)
Week 96 (n=6, 6, 1, 3, 16)-834 (-1437 to -176)-43 (-1291 to 222)402 (402 to 402)744 (295 to 1243)-40 (-1185 to 314)
SecondaryPercent of CD4 Cells Change From Baseline at Weeks 60, 72, 84, and 96 - Treated Participants

A CD4 cell is an antigenic marker of helper/inducer T cells. These cells were counted during the hematology cell counts performed during a Complete Blood Cell count (CBC) performed by the Central Laboratory. CD4 are measured as number of cells per millimeter to the third power (cells/mm\^3). Percent of CD4 cells is the number of CD4 cells per total number of cells measured\*100. An increase in the percent of CD4 cells is an improvement. The Baseline visit was within 50 days after the screening visit and was prior to start of study medication (Week 1).

Time frame:
Baseline to Weeks 60, 72, 84, and 96
Reported as:
Median · percentage of CD4 cells
Percent of CD4 Cells Change From Baseline at Weeks 60, 72, 84, and 96 - Treated Participants
percentage of CD4 cellsEFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsEFV+ddI+FTC in All Participants
Baseline (n=7,9,3,5,24)28 (17 to 40)26 (25 to 28)12 (5 to 20)7 (2 to 23)24 (14 to 28)
Week 60 (n=3,6,2,3,14)10 (-9 to 13)3 (-5 to 5)7 (-1 to 15)13 (9 to 26)7 (-1 to 13)
Week 72 (n=2,7,1,3,13)-14 (-17 to -10)1 (-5 to 13)-1 (-1 to -1)12 (11 to 26)1 (-5 to 12)
Week 84 (n=3,7,1,3,14)-3 (-22 to 21)8 (0 to 11)2 (2 to 2)12 (5 to 34)7 (0 to 12)
Week 96 (n=3,6,1,3,13)-2 (-19 to 6)7 (3 to 10)15 (15 to 15)14 (14 to 28)7 (3 to 14)

Adverse events

Collected over 96 Weeks (Last patient, last visit).. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
EFV+ddI+FTC in All Participants—20/37 (54.1%)30/37 (81.1%)
Most frequent serious events
Showing 10 of 26
Most frequent serious events
EventEFV+ddI+FTC in All Participants
PneumoniaInfections and infestations8/37
GastroenteritisInfections and infestations3/37
VaricellaInfections and infestations2/37
EczemaSkin and subcutaneous tissue disorders1/37
Oral herpesInfections and infestations1/37
Bacterial infectionInfections and infestations1/37
BronchiolitisInfections and infestations1/37
EpilepsyNervous system disorders1/37
Appendicitis perforatedInfections and infestations1/37
Bovine tuberculosisInfections and infestations1/37
Most frequent other events
Showing 10 of 59
Most frequent other events
EventEFV+ddI+FTC in All Participants
DiarrhoeaGastrointestinal disorders19/37
NasopharyngitisInfections and infestations13/37
PharyngitisInfections and infestations10/37
Upper respiratory tract infectionInfections and infestations10/37
PyrexiaGeneral disorders9/37
VomitingGastrointestinal disorders7/37
Blood alkaline phosphatase increasedInvestigations7/37
GastroenteritisInfections and infestations7/37
Otitis mediaInfections and infestations7/37
InfluenzaInfections and infestations6/37

Baseline characteristics

Treated participants who received at least one dose of study drug (EFV) were analyzed.

Age, Continuous
Age, Continuous(years)EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal
Median0.392 (0.296 to 0.501)0.825 (0.586 to 1.906)2.313 (2.094 to 2.995)3.922 (2.998 to 6.976)0.663 (0.296 to 6.976)
Sex: Female, Male
Sex: Female, Male(Participants)EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal
Female601613
Male9103224
Race/Ethnicity, Customized
Race/Ethnicity, Customized(participants)EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal
White394824
Black or African American70007
Asian20002
Other31004
Region of Enrollment
Region of Enrollment(participants)EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal
Panama30014
Mexico273719
Argentina03104
Thailand20002
South Africa70007
Colombia10001
Human Immunodeficiency Virus (HIV) Ribonucleic acid (RNA) Viral Load (log10 c/mL)
Human Immunodeficiency Virus (HIV) Ribonucleic acid (RNA) Viral Load (log10 c/mL)(log10 c/mL)EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal
Median5.88 (3.34 to 6.74)5.88 (2.12 to 5.88)5.88 (4.88 to 5.88)5.26 (3.38 to 5.88)5.88 (2.12 to 6.74)
HIV RNA Viral Load Category
HIV RNA Viral Load Category(participants)EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal
< 30,000 copies/mL31015
30,000 to <100,000 copies/mL01124
100,000 to <500,000 copies/mL21025
500,000 to <=750,000 copies/mL11013
>750,000 copies/mL963220
CD4 Cell Count (n=13, 9, 3, 7, 32)
CD4 Cell Count (n=13, 9, 3, 7, 32)(cells/mm^3)EFV+ddI+FTC in Infants >=3 Months to < 6 MonthsEFV+ddI+FTC in Infants >=6 Months to < 2 YearsEFV+ddI+FTC in Children >= 2 Years to < 3 YearsEFV+ddI+FTC in Children >= 3 Years to <= 6 YearsTotal
Median1785 (200 to 3584)1569 (516 to 2879)517 (129 to 558)540 (11 to 1363)1144 (11 to 3584)
08

Study locations

17 sites
  • Local Institution
    Buenos Aires, Buenos Aires 1425, Argentina
  • Local Institution
    Capital Federal, 1425, Argentina
  • Local Institution
    Cali, Colombia
  • Local Institution
    Colima, Colima 28019, Mexico
  • Local Institution
    Guadalajara, Jalisco 44280, Mexico
  • Local Institution
    Guadalajara, Jalisco 44520, Mexico
  • Local Institution
    Df, Mexico City 06720, Mexico
  • Local Institution
    Morelia, Michioacan 58000, Mexico
  • Local Institution
    Monterrey, Nuevo León 64460, Mexico
  • Local Institution
    Puebla City, Puebla 72000, Mexico
  • Local Institution
    San Luis Potosí City, 78240, Mexico
  • Local Institution
    Panama City, 0816-00383, Panama
  • Local Institution
    Bloemfontein, Free State 9301, South Africa
  • Local Institution
    Westdene, Gauteng 2092, South Africa
  • Local Institution
    Cape Town, Western Cape 7505, South Africa
  • Local Institution
    Bangkok, 10330, Thailand
  • Local Institution
    Bangkok, 10700, Thailand
09

References and documents

Publications

  • Pavia-Ruz N, Rossouw M, Saez-Llorens X, Bunupuradah T, Taylor M, Yang R, Sevinsky H, Krystal M, Lataillade M, Seekins D, Biguenet S. Efavirenz Capsule Sprinkle and Liquid Formulations With Didanosine and Emtricitabine in HIV-1-infected Infants and Children 3 Months to 6 Years of Age: Study AI266-922. Pediatr Infect Dis J. 2015 Dec;34(12):1355-60. doi: 10.1097/INF.0000000000000913. PubMed 26379163 ↗
10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Feb 2007, a primary completion of Dec 2011 and a completion of Jul 2013. It does not say whether these dates are actual or estimated.

Results were first posted in Apr 2014, 2 years 4 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 15, 2006
First posted
Aug 16, 2006
Start
Feb 2007
Primary completionActual
Dec 2011
CompletionActual
Jul 2013
Results first posted
Apr 11, 2014
Last update
Apr 29, 2014
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 29, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00364793
Responsible party
Sponsor
First posted
Aug 16, 2006
Start date
Feb 2007
Primary completion
Dec 2011
Completion
Jul 2013
Results posted
Apr 11, 2014
Last update
Apr 29, 2014

Study contacts

Bristol-Myers Squibb
study director · Bristol-Myers Squibb

Oversight

Data monitoring committee
No
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Not currently enrolling

This study is completed, as verified in Apr 2014. You cannot join it, but the record below documents what was studied.

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Discussion

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Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drugs tested here: Efavirenz · Didanosine · Emtricitabine

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