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Trial · NCT03487913

Registered outcomes55

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryNumber of Study Participants With Clinically Significant Vital Signs35 days
The number of study participants who experience vital signs (systolic blood pressure, diastolic blood pressure, pulse rate, respiratory rate, and body temperature) meeting the predefined markedly abnormal criteria during the study will be counted and summarized by cohort.
PrimaryNumber of Study Participants With Clinically Significant Changes in 12-lead ElectrocardiogramsBaseline (Day 1) to Day 8 (8 days)The number of study participants who experience 12-lead electrocardiograms meeting the predefined markedly abnormal criteria during the study will be counted and summarized by cohort.
PrimaryNumber of Study Participants With Abnormal Clinical Laboratory Findings (Including Clinical Chemistry, Hematology, and Urinalysis)35 days
The number of study participants who experience clinically meaningful laboratory findings, relating to clinical chemistry, hematology, and urinalysis, during the study will be counted and summarized by cohort.
PrimaryAquaretic Tolerability of Lixivaptan Measured by a Tolerability Questionnaire Relating to the Symptom Burden of Nocturia, Urgency, and Frequency at Day 7: Questions 1, 2, 6, and 10Day 7
The number of study participants who answered "yes" to the following questions at Day 7 will be counted and summarized by dose level: * Could you tolerate taking this dose of study drug for the next 12 months? * Did the study drug make you feel thirsty more often than usual? * Did the study drug make you go to the bathroom (urinate) more often than usual during the night? * Would you be comfortable recommending the study drug to another patient with your kidney condition?
PrimaryAquaretic Tolerability of Lixivaptan Measured by a Tolerability Questionnaire Relating to the Symptom Burden of Nocturia, Urgency, and Frequency at Day 7: Question 3Day 7
The number of study participants who answered "not at all" and "slightly" to the following question at Day 7 will be measured: • If the study drug made you feel thirsty more often than usual, were you bothered by it?
PrimaryAquaretic Tolerability of Lixivaptan Measured by a Tolerability Questionnaire Relating to the Symptom Burden of Nocturia, Urgency, and Frequency at Day 7: Question 7Day 7
The number of study participants who answered "not at all" and "slightly" to the following question at Day 7 will be measured: • If the study drug made you go to the bathroom (urinate) more often than usual during the night, did it bother you?
SecondaryChange From Baseline in Spot Urine OsmolalityAt time of dose, and at 1, 2, 4, 6, 9, 10, 11, 12, 14, and 24 hours after the Day 1 and Day 7 doses
Changes from baseline in spot urine measurements for samples taken at 0, 1, 2, 4, 6, 9, 10, 11, 12, 14, and 24 hours after the Day 1 and Day 7 doses will be summarized by cohort. The baseline value for each time point after first administration of study drug is the value observed at the corresponding time point on Day -1 (or Day 1 for the AM predose assessment only).
SecondaryChange From Baseline in 24-hour Urine OutputBaseline (Day -1), Day 1, and Day 7
Changes from baseline in 24-hour urine output for samples taken on Day 1 and Day 7 will be summarized by cohort. The baseline value was the last value observed prior to first administration of study drug on Day -1.
SecondaryChange From Baseline of the Estimated Glomerular Filtration Rate (eGFR)Baseline (Day 1) to end of study (35 days)Changes from baseline of eGFR derived from the serum creatinine concentrations for samples taken at Day 1 (postdose), Day 2, Day 7, Day 8, and Day 35 will summarized by cohort
SecondaryChange From Baseline in Total Kidney VolumeBaseline (Day -1) to end of study (36 days)Changes from baseline (Day -1) in total kidney volume, measured by abdominal MRI on Day 7 and Day 35, will be summarized by cohort.
SecondaryChange From Baseline in Liver VolumeBaseline (Day -1) to end of study (36 days)Changes from baseline (Day -1) in liver volume, measured by abdominal MRI on Day 7 and Day 35, will be summarized by cohort.
SecondaryChange From Baseline of Plasma CopeptinBaseline (Day -1) to end of study (36 days)Changes from baseline (Day -1) in plasma copeptin, a marker for circulating vasopressin, at Day 2, Day 7, and Day 35 will be summarized by cohort.
SecondaryChange From Baseline in Serum CreatinineBaseline (Day 1, predose) to end of study (35 days)Changes from baseline in serum creatinine for samples taken at Day 2, Day 7, Day 8, and Day 35 will be summarized by cohort.
SecondaryChange From Baseline in Blood Urea Nitrogen (BUN)Baseline (Day 1, predose) to end of study (35 days)Changes from baseline in BUN for samples taken at Day 2, Day 7, Day 8, and Day 35 will be summarized by cohort.
OtherVolume of Distribution Over 24 Hours After Extravascular Dosing (VZ/F24H) of Lixivaptan in ADPKD PatientsDay 7 (am)
The pharmacokinetic parameter VZ/F24H for lixivaptan, calculated as CL/F24H divided by Day 7 PM λZ, will be summarized by cohort. VZ/F24H was not specified in the statistical analysis plan and was calculated for the combined 24-hour period including AM and PM dosing intervals on Day 7. This parameter replaces VZ/F initially planned for the Day 7 AM dose.

Source ClinicalTrials.govtrials-2026-11-12-0.5.0

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

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