A Phase 2 interventional study of DCR-PHXC and Sterile Normal Saline (0.9% NaCl) in Primary Hyperoxaluria Type 1 (PH1), Primary Hyperoxaluria Type 2 (PH2) and Kidney Diseases, sponsored by Novo Nordisk A/S. Completed at 28 sites in 15 countries. Open to participants aged 6 Years and older. Per ClinicalTrials.gov, last updated 2024-05-22.
Sponsored by Novo Nordisk A/S · Phase 2, Interventional, and Treatment
The purpose of this study is to evaluate the efficacy and safety of DCR-PHXC in Children and Adults with Primary Hyperoxaluria Type 1 (PH1) and Primary Hyperoxaluria Type 2 (PH2)
3,843 studies on the registry are indexed under Kidney Diseases; 492 are open to participants now.
This study's enrollment of 35 is below the median of 70 across 2,645 interventional studies indexed under Kidney Diseases.
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Key Inclusion Criteria:
Key Exclusion Criteria:
Intervention, drug, DCR-PHXC
Drug: DCR-PHXC
Placebo, sterile normal saline (0.9% NaCl) for subcutaneous (SC) injection
Drug: Sterile Normal Saline (0.9% NaCl)
Multiple fixed doses of DCR-PHXC by subcutaneous (SC) injection
Also known as: nedosiran
Sterile Normal Saline (0.9% NaCl) for subcutaneous (SC) injection, administered at same injection volume as DCR-PHXC, to serve as placebo
AUC From Day 90 To Day 180, Based on Percent Change From Baseline in 24-Hour Uox
The AUC of 24-hour urinary oxalate (Uox) from Day 90 to Day 180, based on percent change from baseline, was compared between the active treatment group and placebo group. A multiple imputation approach was used to handle missing Uox data and then calculate the AUC.
Time frame: From Day 90 to 180
Percentage of Participants Whose 24-hour Uox Values Normalized or Near-normalized on at Least 2 Consecutive Visits
Percentage of participants whose 24-hour Uox values normalized or near-normalized on at least 2 consecutive visits are presented. Normalization of Uox was defined as less than (\<) 0.46 millimole per 24 hours (mmol/24 hours) and near normalization was defined as greater than or equal to (\>=) 0.46 to \< 0.60 mmol/24 hours (values adjusted per 1.73 square meter \[1.73 m\^2\] body surface area \[BSA\] in participants aged \<18 years).
Time frame: From Day 90 to 180
Percent Change From Baseline to Day 180 in the Summed Surface Area of Kidney Stones
Percent change from baseline to Day 180 in the summed surface area measured in millimetre square (mm\^2) of kidney stones is presented.
Time frame: Baseline, Day 180
Percent Change From Baseline to Day 180 in the Number of Kidney Stones
Percent change from baseline to Day 180 in the number of kidney stones is presented.
Time frame: Baseline, Day 180
Percent Change From Baseline to Day 180 in Plasma Oxalate (For Adults Only)
Percent change from baseline to Day 180 in plasma oxalate (for adults only) is presented.
Time frame: Baseline, Day 180
Rate of Change in Estimated Glomerular Filtration Rate (eGFR) From Baseline to Day 180
Monthly rate of eGFR change is presented. eGFR was calculated using Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) and creatinine-based equation.
Time frame: Baseline, Day 180
Number of Treatment Emergent Adverse Events (TEAEs) And Serious Treatment Emergent Adverse Events (TEAEs)
Number of TEAEs and TESAEs are presented. An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalisation, results in persistent disability/incapacity or is a congenital anomaly/birth defect. TEAE was defined as any AE with an onset date/time on or after administration (including any partial administration) of the first dose of study intervention and through the study completion date from the end of study case report form (CRF).
Time frame: From Baseline up to Day 180
Change From Baseline in Electrocardiogram (ECG): Heart Rate
Change from baseline in heart rate is presented.
Time frame: Baseline, Day 180
Change From Baseline in ECG: PR Interval, QRS Duration, QT Interval, QTcB Interval, QTcF Interval and RR Interval
Change from baseline in PR interval, QRS duration, QT interval, QTcB interval, QTcF interval and RR interval is presented.
Time frame: Baseline, Day 180
Number of Participants With Most Abnormal Post-Baseline Shift in Physical Examination
Number of participants who had most abnormal post-baseline shift in physical examination are presented. Physical examination shifts were categories into 4 categories: 1) missing; 2) normal; 3) abnormal-not clinically significant (NCS) and 4) abnormal-clinically significant (CS). Each category was presented according body systems including: 1) eyes, ears, nose and throat; 2) chest/respiratory; 3) heart/cardiovascular; 4) gastrointestinal/liver; 5) musculoskeletal/extremities; 6) dermatological/skin; 7) thyroid/neck; 8) lymph nodes; 9) neurological.
Time frame: Baseline up to Day 180
Change From Baseline in Vital Signs: Height
Change from baseline to Day 180 in height is presented.
Time frame: Baseline, Day 180
Change From Baseline in Vital Signs: Weight
Change from baseline to Day 180 in weight is presented.
Time frame: Baseline, Day 180
Change From Baseline in Vital Signs: Body Mass Index (BMI)
Change from baseline to Day 180 in BMI is presented.
Time frame: Baseline, Day 180
Change From Baseline in Vital Signs: Oral Body Temperature
Change from baseline to Day 180 in oral body temperature is presented.
Time frame: Baseline, Day 180
Change From Baseline in Vital Signs: Heart Rate
Change from baseline to Day 180 in heart rate is presented.
Time frame: Baseline, Day 180
Change From Baseline in Vital Signs: Respiratory Rate
Change from baseline to Day 180 in respiratory rate is presented.
Time frame: Baseline, Day 180
Change From Baseline in Vital Signs: Systolic and Diastolic Blood Pressure
Change from baseline to Day 180 in systolic and diastolic blood pressure is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Chemistry Laboratory Tests: Alanine Aminotransferase, Aspartate Aminotransferase, Glutamate Dehydrogenase, Gamma Glutamyl Transferase, Alkaline Phosphatase, Lactate Dehydrogenase and Creatine Kinase
Change from baseline to Day 180 in alanine aminotransferase, aspartate aminotransferase, glutamate dehydrogenase, gamma glutamyl transferase, alkaline phosphatase, lactate dehydrogenase and creatine kinase are presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Chemistry Laboratory Tests: Bilirubin, Direct Bilirubin and Creatinine
Change from baseline to Day 180 in bilirubin, direct bilirubin and creatinine are presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Chemistry Laboratory Tests: Protein, Albumin
Change from baseline to Day 180 in protein and albumin are presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Chemistry Laboratory Tests: Sodium, Chloride, Potassium and Urea
Change from baseline to Day 180 in sodium, chloride, potassium and urea are presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Chemistry Laboratory Tests: Vitamin B6
Change from baseline to Day 180 in vitamin B6 is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Erythrocytes
Change from baseline to Day 180 in erythrocytes is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Hemoglobin and Erythrocytes Mean Corpuscular Hemoglobin Concentration
Change from baseline to Day 180 in hemoglobin and erythrocytes mean corpuscular hemoglobin concentration are presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Hematocrit
Change from baseline to Day 180 in hematocrit is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Erythrocytes (Ery.) Mean Corpuscular Volume and Mean Platelet Volume
Change from baseline to Day 180 in ery. mean corpuscular volume and mean platelet volume are presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Erythrocytes Mean Corpuscular Hemoglobin
Change from baseline to Day 180 in erythrocytes mean corpuscular hemoglobin is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Reticulocytes, Platelets, Leukocytes, Lymphocytes, Monocytes, Eosinophils, Basophils, Neutrophils
Change from baseline to Day 180 in reticulocytes, platelets, leukocytes, lymphocytes, monocytes, eosinophils, basophils, neutrophils are presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Lymphocytes/Leukocytes
Change from baseline to Day 180 in lymphocytes/leukocytes is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Monocytes/Leukocytes
Change from baseline to Day 180 in monocytes/leukocytes is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Eosinophils/Leukocyte
Change from baseline to Day 180 in eosinophils/leukocytes is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Basophils/Leukocytes
Change from baseline to Day 180 in basophils/leukocytes is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Hematology Laboratory Tests: Neutrophils/Leukocytes
Change from baseline to Day 180 in neutrophils/leukocytes is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Urinalysis Laboratory Tests: Specific Gravity
Change from baseline to Day 180 in urine specific gravity is presented.
Time frame: Baseline, Day 180
Change From Baseline in Clinical Urinalysis Laboratory Tests: pH
Change from baseline to Day 180 in urine pH is presented.
Time frame: Baseline, Day 180
Maximum Observed Plasma Concentration (Cmax) of DCR-PHXC
The Cmax was defined as the maximum observed plasma concentration during a dosing interval. Data for this endpoint is reported only for adults and adolescent participants from PK population.
Time frame: For adults: Day 1 and 30: predose, 5, 15, and 30 minutes and 1, 2, 4, 6, 10, and 12 hours (hrs) postdose; Day 150: predose, 2, 6, and 12 hours postdose For adolescents: Days 1 and 30: predose, 30 minutes and 2 and 10 hours postdose
Area Under the Curve From Time of Administration to the Last Measurable Concentration (AUC0-last) of of DCR-PHXC
AUC0-last was defined as the area under the curve from time of administration to the last measurable concentration. Data for this endpoint is reported only for adults and adolescent participants from PK population.
Time frame: For adults: Day 1 and 30: predose, 5, 15, and 30 minutes and 1, 2, 4, 6, 10, and 12 hours postdose; Day 150: predose, 2, 6, and 12 hours postdose For adolescents: Days 1 and 30: predose, 30 minutes and 2 and 10 hours postdose
The study was conducted at 19 sites in France, Spain, Italy, Netherlands, Germany, United Kingdom, Australia, United States, Canada, Lebanon, and Japan.
| Milestone | DCR-PHXC | Placebo |
|---|---|---|
| Started | 23 | 12 |
| Safety population | 23 | 12 |
| Intent to treat (itt) population | 23 | 12 |
| Modified itt (mitt) population | 22 | 12 |
| Completed | 22 | 11 |
| Not completed | 1 | 1 |
| Withdrew: Withdrawal by subject | 1 | 1 |
The AUC of 24-hour urinary oxalate (Uox) from Day 90 to Day 180, based on percent change from baseline, was compared between the active treatment group and placebo group. A multiple imputation approach was used to handle missing Uox data and then calculate the AUC.
| Percent change in 24-hour Uox AUC | DCR-PHXC | Placebo |
|---|---|---|
| AUC From Day 90 To Day 180, Based on Percent Change From Baseline in 24-Hour Uox | 3507.4 ± 788.49 | -1664.4 ± 1189.96 |
Percentage of participants whose 24-hour Uox values normalized or near-normalized on at least 2 consecutive visits are presented. Normalization of Uox was defined as less than (\<) 0.46 millimole per 24 hours (mmol/24 hours) and near normalization was defined as greater than or equal to (\>=) 0.46 to \< 0.60 mmol/24 hours (values adjusted per 1.73 square meter \[1.73 m\^2\] body surface area \[BSA\] in participants aged \<18 years).
| Percentage of participants | DCR-PHXC | Placebo |
|---|---|---|
| Percentage of Participants Whose 24-hour Uox Values Normalized or Near-normalized on at Least 2 Consecutive Visits | 50 | 0 |
Percent change from baseline to Day 180 in the summed surface area measured in millimetre square (mm\^2) of kidney stones is presented.
| Percent change in summed surface area | DCR-PHXC | Placebo |
|---|---|---|
| Percent Change From Baseline to Day 180 in the Summed Surface Area of Kidney Stones | -2.13 (-100.0 to 228.6) | 21.77 (-24.3 to 1500.0) |
Percent change from baseline to Day 180 in the number of kidney stones is presented.
| Percent change in kidney stone numbers | DCR-PHXC | Placebo |
|---|---|---|
| Percent Change From Baseline to Day 180 in the Number of Kidney Stones | 0.00 (-100.0 to 200.0) | 0.00 (-94.1 to 100.0) |
Percent change from baseline to Day 180 in plasma oxalate (for adults only) is presented.
| Percent change in plasma oxalate | DCR-PHXC | Placebo |
|---|---|---|
| Percent Change From Baseline to Day 180 in Plasma Oxalate (For Adults Only) | -25.00 (-61.9 to 22.2) | -0.00 (-25.0 to 350.0) |
Monthly rate of eGFR change is presented. eGFR was calculated using Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) and creatinine-based equation.
| mL/minute/1.73 m^2 | DCR-PHXC | Placebo |
|---|---|---|
| Rate of Change in Estimated Glomerular Filtration Rate (eGFR) From Baseline to Day 180 | 0.3533 ± 0.39610 | 1.1008 ± 0.54849 |
Number of TEAEs and TESAEs are presented. An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalisation, results in persistent disability/incapacity or is a congenital anomaly/birth defect. TEAE was defined as any AE with an onset date/time on or after administration (including any partial administration) of the first dose of study intervention and through the study completion date from the end of study case report form (CRF).
| Events | DCR-PHXC | Placebo |
|---|---|---|
| TEAEs | 101 | 54 |
| Serious TEAEs | 1 | 3 |
Change from baseline in heart rate is presented.
| beats per minute (beats/min) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Electrocardiogram (ECG): Heart Rate | 0.4 ± 8.36 | -1.8 ± 9.18 |
Change from baseline in PR interval, QRS duration, QT interval, QTcB interval, QTcF interval and RR interval is presented.
| milliseconds (msec) | DCR-PHXC | Placebo |
|---|---|---|
| PR interval | -0.5 ± 13.92 | 1.3 ± 8.14 |
| QRS duration | 1.3 ± 6.01 | -1.5 ± 7.53 |
| QT interval | -2.4 ± 23.73 | 4.0 ± 22.97 |
| QTcB interval | -0.8 ± 15.60 | -0.7 ± 17.31 |
| QTcF interval | -1.1 ± 15.80 | 1.2 ± 15.59 |
| RR interval | -7.6 ± 99.35 | 17.8 ± 109.73 |
Number of participants who had most abnormal post-baseline shift in physical examination are presented. Physical examination shifts were categories into 4 categories: 1) missing; 2) normal; 3) abnormal-not clinically significant (NCS) and 4) abnormal-clinically significant (CS). Each category was presented according body systems including: 1) eyes, ears, nose and throat; 2) chest/respiratory; 3) heart/cardiovascular; 4) gastrointestinal/liver; 5) musculoskeletal/extremities; 6) dermatological/skin; 7) thyroid/neck; 8) lymph nodes; 9) neurological.
| Participants | DCR-PHXC | Placebo |
|---|---|---|
| Eyes, ears, nose and throat — missing | 1 | 1 |
| Eyes, ears, nose and throat — normal | 21 | 11 |
| Eyes, ears, nose and throat — abnormal-NCS | 1 | 0 |
| Eyes, ears, nose and throat — abnormal-CS | 0 | 0 |
| Chest/respiratory — missing | 0 | 0 |
| Chest/respiratory — normal | 23 | 12 |
| Chest/respiratory — abnormal-NCS | 0 | 0 |
| Chest/respiratory — abnormal-CS | 0 | 0 |
| Heart/cardiovascular — missing | 0 | 0 |
| Heart/cardiovascular — normal | 22 | 12 |
| Heart/cardiovascular — abnormal-NCS | 1 | 0 |
| Heart/cardiovascular — abnormal-CS | 0 | 0 |
| Gastrointestinal/liver — missing | 0 | 0 |
| Gastrointestinal/liver — normal | 22 | 8 |
| Gastrointestinal/liver — abnormal-NCS | 1 | 4 |
| Gastrointestinal/liver — abnormal-CS | 0 | 0 |
| Musculoskeletal/extremities — missing | 1 | 1 |
| Musculoskeletal/extremities — normal | 22 | 10 |
| Musculoskeletal/extremities — abnormal-NCS | 0 | 1 |
| Musculoskeletal/extremities — abnormal-CS | 0 | 0 |
| Dermatological/skin — missing | 0 | 0 |
| Dermatological/skin — normal | 18 | 8 |
| Dermatological/skin — abnormal-NCS | 4 | 4 |
| Dermatological/skin — abnormal-CS | 1 | 0 |
| Thyroid/neck — missing | 1 | 1 |
| Thyroid/neck — normal | 22 | 10 |
| Thyroid/neck — abnormal-NCS | 0 | 1 |
| Thyroid/neck — abnormal-CS | 0 | 0 |
| Lymph nodes — missing | 0 | 1 |
| Lymph nodes — normal | 23 | 10 |
| Lymph nodes — abnormal-NCS | 0 | 1 |
| Lymph nodes — abnormal-CS | 0 | 0 |
Change from baseline to Day 180 in height is presented.
| centimetres (cm) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Vital Signs: Height | 0.70 ± 2.383 | 1.08 ± 1.446 |
Change from baseline to Day 180 in weight is presented.
| kilograms | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Vital Signs: Weight | 1.134 ± 3.4794 | 1.350 ± 3.4330 |
Change from baseline to Day 180 in BMI is presented.
| Kilograms per square meter (kg/m^2) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Vital Signs: Body Mass Index (BMI) | 0.23 ± 1.175 | 0.14 ± 1.293 |
Change from baseline to Day 180 in oral body temperature is presented.
| Degree Celsius (C) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Vital Signs: Oral Body Temperature | 0.01 ± 0.399 | 0.05 ± 0.446 |
Change from baseline to Day 180 in heart rate is presented.
| beats/minute | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Vital Signs: Heart Rate | 0.8 ± 10.64 | -3.1 ± 6.35 |
Change from baseline to Day 180 in respiratory rate is presented.
| Breaths per minute | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Vital Signs: Respiratory Rate | -0.2 ± 3.02 | -1.1 ± 5.00 |
Change from baseline to Day 180 in systolic and diastolic blood pressure is presented.
| millimetres of mercury (mmHg) | DCR-PHXC | Placebo |
|---|---|---|
| Systolic blood pressure | -2.0 ± 13.64 | -3.0 ± 9.82 |
| Diastolic blood pressure | 0.8 ± 9.20 | -2.6 ± 11.84 |
Change from baseline to Day 180 in alanine aminotransferase, aspartate aminotransferase, glutamate dehydrogenase, gamma glutamyl transferase, alkaline phosphatase, lactate dehydrogenase and creatine kinase are presented.
| Units per litre (U/L) | DCR-PHXC | Placebo |
|---|---|---|
| Alanine aminotransferase | 1.0 ± 8.59 | -1.1 ± 4.59 |
| Aspartate aminotransferase | -0.2 ± 4.95 | -1.3 ± 4.73 |
| Glutamate dehydrogenase | -0.15 ± 1.913 | -0.38 ± 1.064 |
| Gamma glutamyl transferase | 2.7 ± 4.12 | -0.2 ± 3.03 |
| Alkaline phosphatase | 3.0 ± 29.11 | -16.8 ± 41.78 |
| Lactate dehydrogenase | 4.1 ± 20.51 | 1.0 ± 20.72 |
| Creatine kinase | 7.5 ± 59.28 | -34.1 ± 160.46 |
Change from baseline to Day 180 in bilirubin, direct bilirubin and creatinine are presented.
| micromoles per litre (umol/L) | DCR-PHXC | Placebo |
|---|---|---|
| Bilirubin | 1.0 ± 3.18 | 0.4 ± 1.80 |
| Direct bilirubin | 0.1 ± 1.32 | 0.1 ± 0.32 |
| Creatinine | -1.2 ± 10.81 | 4.3 ± 11.02 |
Change from baseline to Day 180 in protein and albumin are presented.
| grams per litre (g/L) | DCR-PHXC | Placebo |
|---|---|---|
| Protein | 0.4 ± 4.47 | 1.5 ± 6.27 |
| Albumin | 0.5 ± 3.22 | 1.2 ± 3.63 |
Change from baseline to Day 180 in sodium, chloride, potassium and urea are presented.
| millimoles per litre (mmol/L) | DCR-PHXC | Placebo |
|---|---|---|
| Sodium | 0.4 ± 2.44 | 0.2 ± 3.03 |
| Chloride | 0.6 ± 3.30 | -0.4 ± 4.08 |
| Potassium | -0.04 ± 0.425 | 0.05 ± 0.360 |
| Urea | 0.01 ± 0.895 | 0.40 ± 1.197 |
Change from baseline to Day 180 in vitamin B6 is presented.
| nanomoles per litre (nmol/L) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Chemistry Laboratory Tests: Vitamin B6 | 34.60 ± 99.278 | -215.73 ± 337.775 |
Change from baseline to Day 180 in erythrocytes is presented.
| 10^12 cells per liter | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Erythrocytes | -0.04 ± 0.365 | 0.02 ± 0.230 |
Change from baseline to Day 180 in hemoglobin and erythrocytes mean corpuscular hemoglobin concentration are presented.
| gram per litre (g/L) | DCR-PHXC | Placebo |
|---|---|---|
| Hemoglobin | -1.7 ± 8.90 | 0.1 ± 6.62 |
| Ery. mean corpuscular hemoglobin concentration | 1.5 ± 15.10 | -4.8 ± 10.80 |
Change from baseline to Day 180 in hematocrit is presented.
| Litre/litre (L/L) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Hematocrit | -0.004 ± 0.0271 | 0.006 ± 0.0288 |
Change from baseline to Day 180 in ery. mean corpuscular volume and mean platelet volume are presented.
| femtoliter (fL) | DCR-PHXC | Placebo |
|---|---|---|
| Ery. mean corpuscular volume | 0.0 ± 2.31 | 1.1 ± 3.57 |
| Mean platelet volume | -0.03 ± 0.864 | 0.61 ± 0.547 |
Change from baseline to Day 180 in erythrocytes mean corpuscular hemoglobin is presented.
| picogram (pg) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Erythrocytes Mean Corpuscular Hemoglobin | -0.1 ± 1.37 | -0.1 ± 0.99 |
Change from baseline to Day 180 in reticulocytes, platelets, leukocytes, lymphocytes, monocytes, eosinophils, basophils, neutrophils are presented.
| 10^12 cells per liter | DCR-PHXC | Placebo |
|---|---|---|
| Reticulocytes | 0.2 ± 30.08 | -23.1 ± 32.21 |
| Platelets | -11.4 ± 54.50 | 2.3 ± 53.30 |
| Leukocytes | 0.18 ± 1.573 | -1.03 ± 1.931 |
| Lymphocytes | -0.03 ± 0.621 | 0.06 ± 0.331 |
| Monocytes | 0.07 ± 0.085 | -0.02 ± 0.103 |
| Eosinophils | 0.03 ± 0.072 | 0.04 ± 0.126 |
| Basophils | 0.01 ± 0.062 | -0.04 ± 0.097 |
| Neutrophils | 0.14 ± 1.195 | -1.07 ± 1.700 |
Change from baseline to Day 180 in lymphocytes/leukocytes is presented.
| Percentage of lymphocytes/leukocytes | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Lymphocytes/Leukocytes | -1.3 ± 10.26 | 5.1 ± 10.21 |
Change from baseline to Day 180 in monocytes/leukocytes is presented.
| Percentage of monocytes/leukocytes | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Monocytes/Leukocytes | 1.0 ± 2.04 | 0.9 ± 2.51 |
Change from baseline to Day 180 in eosinophils/leukocytes is presented.
| Percentage of eosinophils/leukocytes | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Eosinophils/Leukocyte | 0.4 ± 1.56 | 0.9 ± 1.66 |
Change from baseline to Day 180 in basophils/leukocytes is presented.
| Percentage of basophils/leukocytes | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Basophils/Leukocytes | 0.0 ± 0.77 | 0.1 ± 0.74 |
Change from baseline to Day 180 in neutrophils/leukocytes is presented.
| Percentage of neutrophils/leukocytes | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Hematology Laboratory Tests: Neutrophils/Leukocytes | -0.3 ± 11.45 | -7.1 ± 13.14 |
Change from baseline to Day 180 in urine specific gravity is presented.
| gram per millilitre (g/mL) | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Urinalysis Laboratory Tests: Specific Gravity | 0.0000 ± 0.00872 | -0.0008 ± 0.00480 |
Change from baseline to Day 180 in urine pH is presented.
| pH | DCR-PHXC | Placebo |
|---|---|---|
| Change From Baseline in Clinical Urinalysis Laboratory Tests: pH | 0.29 ± 1.067 | -0.10 ± 0.738 |
The Cmax was defined as the maximum observed plasma concentration during a dosing interval. Data for this endpoint is reported only for adults and adolescent participants from PK population.
| nanogram per millilitre (ng/mL) | DCR-PHXC: Adults | DCR-PHXC: Adolescents |
|---|---|---|
| Day 1 | 778 ± 35.7 | 363 ± 76.7 |
| Day 30 | 774 ± 46.1 | 350 ± 48.6 |
| Day 150 | 648 ± 55.5 | — |
AUC0-last was defined as the area under the curve from time of administration to the last measurable concentration. Data for this endpoint is reported only for adults and adolescent participants from PK population.
| hours*nanograms per millilitre (h*ng/mL) | DCR-PHXC: Adults | DCR-PHXC: Adolescents |
|---|---|---|
| Day 1 | 12500 ± 29.3 | 6450 ± 54.5 |
| Day 30 | 12800 ± 38.4 | 6400 ± 45.1 |
| Day 150 | 6100 ± 46.2 | — |
Collected over From Day 1 up to end of the study (Day 180). Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| DCR-PHXC | 0/23 (0%) | 1/23 (4.3%) | 16/23 (69.6%) |
| Placebo | 0/12 (0%) | 2/12 (16.7%) | 10/12 (83.3%) |
| Event | DCR-PHXC | Placebo |
|---|---|---|
| Blood creatinine increasedBlood and lymphatic system disorders | 0/23 | 1/12 |
| NephrolithiasisRenal and urinary disorders | 0/23 | 1/12 |
| Renal colicRenal and urinary disorders | 0/23 | 1/12 |
| TachycardiaCardiac disorders | 1/23 | 0/12 |
| Event | DCR-PHXC | Placebo |
|---|---|---|
| HeadacheNervous system disorders | 4/23 | 3/12 |
| Injection site erythemaGeneral disorders | 5/23 | 0/12 |
| NauseaGastrointestinal disorders | 4/23 | 1/12 |
| FatigueGeneral disorders | 1/23 | 2/12 |
| Abdominal pain upperGastrointestinal disorders | 0/23 | 2/12 |
| NephrolithiasisRenal and urinary disorders | 2/23 | 2/12 |
| Back painMusculoskeletal and connective tissue disorders | 0/23 | 2/12 |
| Injection site painGeneral disorders | 2/23 | 0/12 |
| DysmenorrhoeaReproductive system and breast disorders | 2/23 | 0/12 |
| Oropharyngeal painRespiratory, thoracic and mediastinal disorders | 2/23 | 0/12 |
| Age, Continuous(years) | DCR-PHXC | Placebo | Total |
|---|---|---|---|
| Mean | 23.7 ± 11.95 | 23.6 ± 11.48 | 23.7 ± 11.62 |
| Age, Customized(Participants) | DCR-PHXC | Placebo | Total |
|---|---|---|---|
| Between 2 to 11 years | 3 | 2 | 5 |
| Between 12 to 17 years | 6 | 4 | 10 |
| Between 18 to 64 years | 14 | 6 | 20 |
| Sex: Female, Male(Participants) | DCR-PHXC | Placebo | Total |
|---|---|---|---|
| Female | 12 | 6 | 18 |
| Male | 11 | 6 | 17 |
| Ethnicity (NIH/OMB)(Participants) | DCR-PHXC | Placebo | Total |
|---|---|---|---|
| Hispanic or Latino | 2 | 0 | 2 |
| Not Hispanic or Latino | 19 | 11 | 30 |
| Unknown or Not Reported | 2 | 1 | 3 |
| Race (NIH/OMB)(Participants) | DCR-PHXC | Placebo | Total |
|---|---|---|---|
| American Indian or Alaska Native | 0 | 0 | 0 |
| Asian | 6 | 0 | 6 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 |
| Black or African American | 0 | 0 | 0 |
| White | 15 | 10 | 25 |
| More than one race | 0 | 1 | 1 |
| Unknown or Not Reported | 2 | 1 | 3 |
Documents are hosted by the registry — open the source record to download them.
Plan to share: No
Ran from Oct 2019 to primary completion in Jun 2021, 19 months.
Results were first posted in May 2024, 2 years 11 months after primary completion. A results delay was requested in Jun 2022.
Of 110 industry-sponsored phase 2 interventional studies under Kidney Diseases, half reached primary completion within 19 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 31. This study's 19 months is close to that.
Counting every sponsor, half of 183 studies reached it within 22 months; a quarter within 14 and three quarters within 35.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in May 2024. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Nedosiran