CClinicalTrials.gg
CompletedNCT00448916Updated Jan 25, 2021Results posted

Open-Label Extension Study Of Safety And Tolerability Of Pregabalin In Pediatric Patients With Partial-Onset Seizures

A Phase 3 interventional study of Pregabalin in Epilepsies, Partial, sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris Inc.. Completed at 18 sites in 3 countries. Open to participants aged 1 Month to 16 Years. Per ClinicalTrials.gov, last updated 2021-01-25.

Sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris Inc. · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
54
Allocation
Non-randomized
Ages
1 Month to 16 Years
Sex
All
01

Study summary

The study will evaluate the long-term safety and tolerability of pregabalin in pediatric patients, age 1 month through 16 years, with partial onset seizures.

02

Conditions studied

  • Epilepsies, Partial

Keywords

  • Partial-onset seizures; epilepsy; pediatric; pregabalin; 1 year extension study; safety; tolerability
03

In context

Epilepsy

1,805 studies on the registry are indexed under Epilepsy; 417 are open to participants now.

This study's enrollment of 54 is close to the median of 50 across 1,206 interventional studies indexed under Epilepsy.

Browse Epilepsy studies →

Lead sponsor

Pfizer's Upjohn has merged with Mylan to form Viatris Inc. is the lead sponsor of 431 studies on the registry; none are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 8 (89%) have results posted.

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

04

Who can participate

Ages eligible
1 Month to 16 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Partial onset seizures, incompletely controlled on 1-3 medications
  • At least 1 seizure per 28 days, on average
  • Completion of study A0081074

Exclusion criteria

Exclusion Criteria:

  • Primary generalized seizures
  • Progressive CNS pathology
  • Failure to tolerate pregabalin in study A0081074
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
54 participants (actual)

Study arms

  • Experimental
    Pregabalin

    Orally-administered pregabalin

    Drug: Pregabalin

Interventions

  • DrugPregabalin

    Orally-administered pregabalin

06

What researchers measure

Primary outcomes

  1. Number of Participants With Adverse Events (AE).

    An AE is any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event need not necessarily have a causal relationship with the treatment or usage. A serious adverse event (SAE) is any untoward medical occurrence at any dose that: results in death; is life-threatening (immediate risk of death); requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; results in congenital anomaly/birth defect.

    Time frame: 12 Months

Secondary outcomes

  1. Number of Participants With Change From Previous Physical Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.

    Changes from previous examinations in physical examination were reported. Examination of abdomen, breasts, ears, extremities, eyes, genitourinary, head, heart, lungs, lymph nodes, mouth, musculoskeletal, neck, nose, ocular fundi, skin, throat, thyroid and general examinations were done. Evaluation was done based on presence of abnormality which were noted as "abnormal" and no abnormalities in the sites were reported as "normal". Any change from the previous physical examination results were noted.

    Time frame: Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.

  2. Number of Participants With Change From Previous Neurological Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.

    Changes from previous examinations in neurological examination were reported. The neurologic exam were performed by a pediatric neurologist or qualified staff member. Coordination, cranial nerves, gait, level of consciousness, lower and upper extremity sensation, muscle strength, muscle tone, nystagmus, reflexes, Romberg test, and speech were examined.

    Time frame: Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up

  3. Number of Participants With Significant Change in Supine Diastolic Blood Pressure (BP) at Post-Baseline Visits (Visit 1 to 12 Months).

    Participants with significant supine diastolic BP values with the criteria ≥ 20% increase from Baseline or ≥ 20% decrease from Baseline or \> 1.25 times upper limit of normal (ULN) or \< 0.9 times lower limit of normal (LLN) were identified and recorded. The categorical summary of Post-Baseline supine diastolic BP data are presented below.

    Time frame: Visit 1 to 12 Months

  4. Number of Participants With Significant Change in Supine Systolic BP at Post Baseline Visits (Visit 1 to 12 Months).

    Participants with significant supine systolic BP values with the criteria ≥ 30% increase from Baseline or ≥ 30% decrease from Baseline or \> 1.25 times ULN or \< 0.9 times LLN were identified and recorded. The categorical summary of Post-Baseline supine systolic BP data are presented below.

    Time frame: Visit 1 to 12 Months

  5. Number of Participants With Significant Change in Supine Heart Rate (HR) at Post Baseline Visits (Visit 1 to 12 Months).

    Participants with significant heart rate values with the criteria \> 1.5 times ULN or \< 0.9 times LLN were identified and recorded. The categorical summary of Post-Baseline supine HR data are presented below.

    Time frame: Visit 1 to 12 Months

  6. Derived Body Mass Index Data (BMI) at Month 12/Early Termination.

    BMI was calculated from height and weight measured at Month 12 visit using the formula: weight(kg)/height(m)2.

    Time frame: Month 12/Early Termination

  7. Change From Baseline in Body Weight at Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up.

    Weight was recorded in kilograms and weight change from Baseline was reported.

    Time frame: Baseline, Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up

  8. Height at Month 12/Early Termination.

    Height was recorded in centimeters.

    Time frame: Month 12/Early Termination

  9. Number of Participants With Changes in Electrocardiogram (ECG) Data Post-Baseline Visits (Week 1 to 12 Months).

    Based on the criteria for safety values of potential clinical concern, the PR interval (≥200 msec; ≥25% increase from Baseline; ≥50% increase from Baseline), QRS complex (≥200 msec; ≥25% increase from Baseline), QT (≥500 msec), maximum QTcB interval (450-\<480; 480-\<500; ≥500 msec) and maximum QTcF interval (450-\<480; 480-\<500; ≥500 msec) values were calculated. Baseline was defined as Day 1 of the parent study A0081074 (NCT00437281). Categorical data of the Post-Baseline vists are represented below.

    Time frame: Week 1 to 12 Months

  10. Number of Participants With Hematotolgical Abnormalities.

    Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Some of the values are: platelets (10\*3/mm\*3): \<0.5 LLN or \>1.75 ULN; white blood cell (WBC) count (X10E9/L): \<0.6 LLN or \>1.5 ULN; lymphocytes-Abs (10\*3/mm\*3): \<0.8 LLN or \>1.2 ULN; total neutrophils-Abs (10\*3/mm\*3): \<0.8 LLN or \>1.2 ULN; and eosinophils-Abs: \>1.2 ULN.

    Time frame: 12 Months

  11. Number of Participants With Abnormalities in Urinalysis (Dipstick/Microscopy).

    Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Participants with Urine Protein (mg/dL) abnormalities (≥1) were noted based on urinalysis (dipstick). No participants with abnormalities in urinalysis (microscopy) were noted.

    Time frame: 12 Months

  12. Number of Participants With Abnormalities in Endocrine Panel (Hormones).

    Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Some of the criteria are: Free thyroxine (T4 free) (ng/dL): \<0.8 LLN or \>1.2 ULN and Thyroid-stimulating hormone (TSH) (mu/L): \<0.8 LLN or \>1.2 ULN.

    Time frame: 12 Months

  13. Number of Participants With Abnormalities in Creatine Kinase.

    Based on criteria for safety values of potential clinical concern, the participants with abnormal values in creatine kinase (\>2.0 times upper limit of the reference range) (u/L) were noted.

    Time frame: 12 Months

  14. Seizure Frequency.

    Twenty-eight-day seizure frequencies were to be calculated from the seizure diaries and were to be reviewed. However, due to the nature of the data collection and due to unability to clearly differentiate no seizures versus seizures, accurate computation of this data was not performed. Hence, the seizure data was reported as AE.

    Time frame: 28 Days

  15. Number of Participants With Abnormalities in Chemistry (Including Liver Function, Renal Function, Lipids, Electrolytes, Glucose, Insulin Like Growth Factor (IGF) and IGF Binding Protein).

    Based on criteria for safety values of potential clinical concern, the participants with abnormal values in liver function tests, renal function tests, lipid profile, electrolytes, glucose, Insulin like growth factor (IGF) and IGF binding protein were noted and reported in this section.

    Time frame: 12 Months

07

Results

Posted Dec 2, 2014

Participant flow

This study was a dose extension study of pediatric participants with refractory partial-onset seizures who had completed study A0081074 (NCT00437281). Participants were enrolled in 3 countries at 13 study centers with 13 investigators: Republic of Korea (1 center), Mexico (1 center), and the United States (11 centers).

Participant flow — Overall Study
MilestonePregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Started16151211
Completed9965
Not completed7666
Withdrew: Adverse event2232
Withdrew: Lack of efficacy1021
Withdrew: Withdrawal by subject3311
Withdrew: Other1000
Withdrew: Lost to follow-up0101
Withdrew: Protocol violation0001

Outcome measures

PrimaryNumber of Participants With Adverse Events (AE).

An AE is any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event need not necessarily have a causal relationship with the treatment or usage. A serious adverse event (SAE) is any untoward medical occurrence at any dose that: results in death; is life-threatening (immediate risk of death); requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; results in congenital anomaly/birth defect.

Time frame:
12 Months
Reported as:
Number · Participants
Number of Participants With Adverse Events (AE).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Participants with AEs1413119
Participants with serious AEs8301
Participants with severe AEs7401
SecondaryNumber of Participants With Change From Previous Physical Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.

Changes from previous examinations in physical examination were reported. Examination of abdomen, breasts, ears, extremities, eyes, genitourinary, head, heart, lungs, lymph nodes, mouth, musculoskeletal, neck, nose, ocular fundi, skin, throat, thyroid and general examinations were done. Evaluation was done based on presence of abnormality which were noted as "abnormal" and no abnormalities in the sites were reported as "normal". Any change from the previous physical examination results were noted.

Time frame:
Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.
Reported as:
Number · Participants
Number of Participants With Change From Previous Physical Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Week 1 (N=16,13,11,10)2100
Month 1 (N=14,13,10,10)1100
Month 6 (N=11,10,6,7)1100
Month 12/Eary Termination (N=16,12,12,9)1211
Follow-up (N=6,4,9,6)0010
SecondaryNumber of Participants With Change From Previous Neurological Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.

Changes from previous examinations in neurological examination were reported. The neurologic exam were performed by a pediatric neurologist or qualified staff member. Coordination, cranial nerves, gait, level of consciousness, lower and upper extremity sensation, muscle strength, muscle tone, nystagmus, reflexes, Romberg test, and speech were examined.

Time frame:
Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up
Reported as:
Number · Participants
Number of Participants With Change From Previous Neurological Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Week 1 (N=16,13,11,10)1000
Month 1 (N=14,13,10,10)0000
Month 6 (N=11,10,6,7)0000
Month 12/Early Termination (N=16,11,12,9)0000
Follow-up (N=6,4,9,6)0000
SecondaryNumber of Participants With Significant Change in Supine Diastolic Blood Pressure (BP) at Post-Baseline Visits (Visit 1 to 12 Months).

Participants with significant supine diastolic BP values with the criteria ≥ 20% increase from Baseline or ≥ 20% decrease from Baseline or \> 1.25 times upper limit of normal (ULN) or \< 0.9 times lower limit of normal (LLN) were identified and recorded. The categorical summary of Post-Baseline supine diastolic BP data are presented below.

Time frame:
Visit 1 to 12 Months
Reported as:
Number · Participants
Number of Participants With Significant Change in Supine Diastolic Blood Pressure (BP) at Post-Baseline Visits (Visit 1 to 12 Months).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
≥ 20% increase from Baseline12583
≥ 20% decrease from Baseline5733
> 1.25 * ULN1100
< 0.9 * LLN0030
SecondaryNumber of Participants With Significant Change in Supine Systolic BP at Post Baseline Visits (Visit 1 to 12 Months).

Participants with significant supine systolic BP values with the criteria ≥ 30% increase from Baseline or ≥ 30% decrease from Baseline or \> 1.25 times ULN or \< 0.9 times LLN were identified and recorded. The categorical summary of Post-Baseline supine systolic BP data are presented below.

Time frame:
Visit 1 to 12 Months
Reported as:
Number · Participants
Number of Participants With Significant Change in Supine Systolic BP at Post Baseline Visits (Visit 1 to 12 Months).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
≥ 30% increase from Baseline2311
≥ 30% decrease from Baseline2100
> 1.25 * ULN0000
< 0.9 * LLN0010
SecondaryNumber of Participants With Significant Change in Supine Heart Rate (HR) at Post Baseline Visits (Visit 1 to 12 Months).

Participants with significant heart rate values with the criteria \> 1.5 times ULN or \< 0.9 times LLN were identified and recorded. The categorical summary of Post-Baseline supine HR data are presented below.

Time frame:
Visit 1 to 12 Months
Reported as:
Number · Participants
Number of Participants With Significant Change in Supine Heart Rate (HR) at Post Baseline Visits (Visit 1 to 12 Months).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
> 1.5 * ULN0000
< 0.9 * LLN5210
SecondaryDerived Body Mass Index Data (BMI) at Month 12/Early Termination.

BMI was calculated from height and weight measured at Month 12 visit using the formula: weight(kg)/height(m)2.

Time frame:
Month 12/Early Termination
Reported as:
Mean · Kg/m^2
Derived Body Mass Index Data (BMI) at Month 12/Early Termination.
Kg/m^2Pregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Derived Body Mass Index Data (BMI) at Month 12/Early Termination.16.2 ± 1.7318.0 ± 3.5220.6 ± 6.5224.8 ± 7.72
SecondaryChange From Baseline in Body Weight at Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up.

Weight was recorded in kilograms and weight change from Baseline was reported.

Time frame:
Baseline, Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up
Reported as:
Mean · Kg
Change From Baseline in Body Weight at Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up.
KgPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Day 9 (N=16,14,12,11)0.1 ± 0.160.1 ± 0.29-0.1 ± 0.790.4 ± 1.07
Week 1 (N=16,13,11,10)0.3 ± 0.290.4 ± 0.611.5 ± 1.151.2 ± 1.43
Month 1 (N=14,13,10,10)0.4 ± 0.450.8 ± 0.732.1 ± 1.772.4 ± 1.52
Month 2 (N=11,12,8,9)1.0 ± 0.731.2 ± 1.123.8 ± 3.253.0 ± 1.81
Month 4 (N=11,10,7,9)1.3 ± 0.861.3 ± 1.295.2 ± 4.324.1 ± 2.28
Month 6 (N=11,10,6,7)1.8 ± 0.981.4 ± 1.525.9 ± 4.175.9 ± 3.32
Month 9 (N=9,10,6,5)2.4 ± 1.182.3 ± 2.526.3 ± 4.667.3 ± 4.32
Month 12/Early Termination (N=15,12,11,8)1.8 ± 1.332.4 ± 2.716.0 ± 4.786.6 ± 4.51
SecondaryHeight at Month 12/Early Termination.

Height was recorded in centimeters.

Time frame:
Month 12/Early Termination
Reported as:
Mean · cm
Height at Month 12/Early Termination.
cmPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Height at Month 12/Early Termination.83.3 ± 8.87109.9 ± 12.76145.6 ± 13.21167.3 ± 8.18
SecondaryNumber of Participants With Changes in Electrocardiogram (ECG) Data Post-Baseline Visits (Week 1 to 12 Months).

Based on the criteria for safety values of potential clinical concern, the PR interval (≥200 msec; ≥25% increase from Baseline; ≥50% increase from Baseline), QRS complex (≥200 msec; ≥25% increase from Baseline), QT (≥500 msec), maximum QTcB interval (450-\<480; 480-\<500; ≥500 msec) and maximum QTcF interval (450-\<480; 480-\<500; ≥500 msec) values were calculated. Baseline was defined as Day 1 of the parent study A0081074 (NCT00437281). Categorical data of the Post-Baseline vists are represented below.

Time frame:
Week 1 to 12 Months
Reported as:
Number · Participants
Number of Participants With Changes in Electrocardiogram (ECG) Data Post-Baseline Visits (Week 1 to 12 Months).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
PR interval: ≥ 200 msec0000
PR interval: ≥50% increase from Baseline0000
PR interval: ≥25% increase from Baseline1010
QRS interval: ≥ 200 msec0000
QRS interval: ≥25% increase from Baseline0000
QT interval: ≥ 500 msec0000
QTcB interval: 450-<480 msec1112
QTcB interval: 480-<500 msec0000
QTcB interval: ≥ 500 msec0000
QTcF interval: 450-<480 msec0000
QTcF interval: 480-<500 msec0000
QTcF interval: ≥ 500 msec0000
SecondaryNumber of Participants With Hematotolgical Abnormalities.

Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Some of the values are: platelets (10\*3/mm\*3): \<0.5 LLN or \>1.75 ULN; white blood cell (WBC) count (X10E9/L): \<0.6 LLN or \>1.5 ULN; lymphocytes-Abs (10\*3/mm\*3): \<0.8 LLN or \>1.2 ULN; total neutrophils-Abs (10\*3/mm\*3): \<0.8 LLN or \>1.2 ULN; and eosinophils-Abs: \>1.2 ULN.

Time frame:
12 Months
Reported as:
Number · Participants
Number of Participants With Hematotolgical Abnormalities.
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Platelets: <0.5xLLN (N=16,15,12,11)1100
Platelets: >1.75xULN (N=16,15,12,11)1000
WBC count: <0.6xLLN (N=15,15,12,11)1200
WBC count: >1.5xULN (N=15,15,12,11)0000
Lymphocytes-Abs: <0.8xLLN (N=15,15,12,11)0000
Lymphocytes-Abs: >1.2xULN (N=15,15,12,11)1002
Total neutrophils-Abs: <0.8xLLN (N=15,15,12,11)3433
Total neutrophils-Abs: >1.2xULN (N=15,15,12,11)1100
Eosinophils-Abs: >1.2xULN (N=15,15,12,11)3110
Hemoglobin: <0.8xLLN(N=15,15,12,11)0000
Hematocrit: <0.8xLLN (N=15,15,12,11)0000
Red blood cell count: <0.8xLLN (N=15,15,12,11)0000
Basophils: >1.2xULN (N=15,15,12,11)0000
Monocytes: >1.2xULN (N=15,15,12,11)0000
SecondaryNumber of Participants With Abnormalities in Urinalysis (Dipstick/Microscopy).

Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Participants with Urine Protein (mg/dL) abnormalities (≥1) were noted based on urinalysis (dipstick). No participants with abnormalities in urinalysis (microscopy) were noted.

Time frame:
12 Months
Reported as:
Number · Participants
Number of Participants With Abnormalities in Urinalysis (Dipstick/Microscopy).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Number of Participants With Abnormalities in Urinalysis (Dipstick/Microscopy).1101
SecondaryNumber of Participants With Abnormalities in Endocrine Panel (Hormones).

Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Some of the criteria are: Free thyroxine (T4 free) (ng/dL): \<0.8 LLN or \>1.2 ULN and Thyroid-stimulating hormone (TSH) (mu/L): \<0.8 LLN or \>1.2 ULN.

Time frame:
12 Months
Reported as:
Number · Participants
Number of Participants With Abnormalities in Endocrine Panel (Hormones).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
T4 (free): <0.8xLLN (N=13,13,11,10)0100
T4 (free): >1.2xULN (N=13,13,11,10)0000
TSH: <0.8xLLN (N=14,12,11,10)1000
TSH: >1.2xULN (N=14,12,11,10)0000
SecondaryNumber of Participants With Abnormalities in Creatine Kinase.

Based on criteria for safety values of potential clinical concern, the participants with abnormal values in creatine kinase (\>2.0 times upper limit of the reference range) (u/L) were noted.

Time frame:
12 Months
Reported as:
Number · Participants
Number of Participants With Abnormalities in Creatine Kinase.
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Number of Participants With Abnormalities in Creatine Kinase.0114
SecondarySeizure Frequency.

Twenty-eight-day seizure frequencies were to be calculated from the seizure diaries and were to be reviewed. However, due to the nature of the data collection and due to unability to clearly differentiate no seizures versus seizures, accurate computation of this data was not performed. Hence, the seizure data was reported as AE.

Time frame:
28 Days
Reported as:
Number · Participants
Seizure Frequency.
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Seizure Frequency.NANANANA
SecondaryNumber of Participants With Abnormalities in Chemistry (Including Liver Function, Renal Function, Lipids, Electrolytes, Glucose, Insulin Like Growth Factor (IGF) and IGF Binding Protein).

Based on criteria for safety values of potential clinical concern, the participants with abnormal values in liver function tests, renal function tests, lipid profile, electrolytes, glucose, Insulin like growth factor (IGF) and IGF binding protein were noted and reported in this section.

Time frame:
12 Months
Reported as:
Number · Participants
Number of Participants With Abnormalities in Chemistry (Including Liver Function, Renal Function, Lipids, Electrolytes, Glucose, Insulin Like Growth Factor (IGF) and IGF Binding Protein).
ParticipantsPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 Years
Alanine Aminotransferase: >3.0xULN (N=15,15,12,11)0110
Blood Urea Nitrogen: >1.3xULN2510
Albumin: <0.8xLLN (N=15,15,12,11)0000
Albumin: >1.2xULN (N=15,15,12,11)2000
Potassium: <0.9xLLN (N=15,15,12,11)0000
Potassium: >1.1xULN (N=15,15,12,11)1010
Magnesium: <0.9xLLN (N=15,15,12,11)0000
Magnesium: >1.1xULN (N=15,15,12,11)1201
Phosphate: <0.8xLLN (N=15,15,12,11)0000
Phosphate: >1.2xULN (N=15,15,12,11)0110
Bicarbonate (venous): <0.9xLLN (N=15,15,12,11)91173
Bicarbonate (venous): >1.1xULN (N=15,15,12,11)0000
Glucose: <0.6xLLN (N=15,15,12,11)1100
Glucose: >1.5xULN (N=15,15,12,11)0000
Insulin-like GrowthFactor:<0.9xLLN(N=12,13,11,10)0010
Insulin-like GrowthFactor:>1.1xULN(N=12,13,11,10)5846
IGF Binding Protein: <0.9xLLN (N=12,13,11,10)0000
IGF Binding Protein: >1.1xULN (N=12,13,11,10)4250
Lipid profile cholesterol/triglycerides(N=1,4,0,1)0000

Adverse events

Collected over From Visit 1 to Visit 9 (Follow-up visit). Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Pregabalin: 1-23 Months—8/16 (50%)14/16 (87.5%)
Pregabalin: 2-6 Years—3/15 (20%)13/15 (86.7%)
Pregabalin: 7-11 Years—0/12 (0%)11/12 (91.7%)
Pregabalin: 12-16 Years—1/11 (9.1%)9/11 (81.8%)
Overall—12/54 (22.2%)47/54 (87%)
Most frequent serious events
Showing 10 of 17
Most frequent serious events
EventPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 YearsOverall
ConvulsionNervous system disorders3/160/150/120/113/54
Unresponsive to stimuliNervous system disorders0/160/150/121/111/54
GastritisGastrointestinal disorders0/161/150/120/111/54
PneumoniaInfections and infestations1/161/150/120/112/54
Upper respiratory tract infectionInfections and infestations0/161/150/120/111/54
Status epilepticusNervous system disorders1/161/150/120/112/54
Respiratory distressRespiratory, thoracic and mediastinal disorders0/161/150/120/111/54
ThrombocytopeniaBlood and lymphatic system disorders1/160/150/120/111/54
Gastrooesophageal reflux diseaseGastrointestinal disorders1/160/150/120/111/54
IleusGastrointestinal disorders1/160/150/120/111/54
Most frequent other events
Showing 10 of 107
Most frequent other events
EventPregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 YearsOverall
PyrexiaGeneral disorders9/163/150/123/1115/54
Upper respiratory tract infectionInfections and infestations3/165/152/120/1110/54
ConstipationGastrointestinal disorders5/161/151/120/117/54
Ear infectionInfections and infestations0/164/151/120/115/54
Otitis mediaInfections and infestations4/164/150/120/118/54
ConvulsionNervous system disorders2/161/153/121/117/54
CoughRespiratory, thoracic and mediastinal disorders4/162/150/120/116/54
DiarrhoeaGastrointestinal disorders3/163/150/120/116/54
Nasal congestionRespiratory, thoracic and mediastinal disorders2/163/151/120/116/54
Abdominal painGastrointestinal disorders3/160/150/120/113/54

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Pregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 YearsTotal
Mean1.18 ± 0.574.14 ± 1.239.98 ± 1.3014.86 ± 1.536.74 ± 5.35
Sex: Female, Male
Sex: Female, Male(Participants)Pregabalin: 1-23 MonthsPregabalin: 2-6 YearsPregabalin: 7-11 YearsPregabalin: 12-16 YearsTotal
Female895325
Male867829
08

Study locations

18 sites
  • University of South Alabama
    Mobile, Alabama 36604, United States
  • University of South Alabama Department of Neurology
    Mobile, Alabama 36693, United States
  • Phoenix Children's Hospital
    Phoenix, Arizona 85016, United States
  • The Children's Clinica of Jonesboro, P.A
    Jonesboro, Arkansas 72401, United States
  • Clinical Study Centers, L. L. C.
    Little Rock, Arkansas 72205, United States
  • UCSF Neurology Clinic
    San Francisco, California 94143, United States
  • Child Neurology Center of Northwest Florida
    Gulf Breeze, Florida 32561, United States
  • The Office of Sergio J Jacinto, MD
    Tampa, Florida 33603, United States
  • Pediatric Epilepsy & Neurology Specialists
    Tampa, Florida 33609, United States
  • St. John's Clinic
    Springfield, Missouri 65804, United States
  • St. John's Hospital
    Springfield, Missouri 65804, United States
  • Women and Children's Hospital of Buffalo
    Buffalo, New York 14222, United States
  • Duke University Medical Center
    Durham, North Carolina 27710, United States
  • Baylor College of Medicine - Texas Children's Hospital
    Houston, Texas 77030, United States
  • Texas Children's Hospital
    Houston, Texas 77030, United States
  • Road Runner Research, Ltd.
    San Antonio, Texas 78258, United States
  • Yonsei University College of Medicine Severance Hospital / Department of Pediatric Neurology
    Seoul, 120-752, Korea, Republic of
  • Antiguo Hospital Civil de Guadalajara Fray Antonio Alcalde
    Guadalajara, Jalisco 44280, Mexico
09

References and documents

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 25, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00448916
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Responsible party
Sponsor
First posted
Mar 19, 2007
Start date
May 2007
Primary completion
Oct 2013
Completion
Oct 2013
Results posted
Dec 2, 2014
Last update
Jan 25, 2021

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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

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