Clinical Trial Results:
A Phase 3b, Multicenter, Open-label, Randomized Withdrawal Trial of the Effects of Titrated Oral SAMSCA® (Tolvaptan) on Serum Sodium, Pharmacokinetics, and Safety in Children and Adolescent Subjects Hospitalized With Euvolemic or Hypervolemic Hyponatremia
Summary
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EudraCT number |
2013-002005-59 |
Trial protocol |
DE GB ES IT CZ BE |
Global end of trial date |
24 Jul 2017
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Results information
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Results version number |
v1(current) |
This version publication date |
25 Apr 2018
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First version publication date |
25 Apr 2018
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
156-08-276
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
NCT02012959 | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
Otsuka Pharmaceutical Development & Commercialization, Inc
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Sponsor organisation address |
2440 Research Boulevard, Rockville, United States, MD 20850
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Public contact |
Otsuka Pharmaceutical Development & Commercialization, Inc., Otsuka Transparency Department, DT-inquiry@otsuka.jp
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Scientific contact |
Otsuka Pharmaceutical Development & Commercialization, Inc., Otsuka Transparency Department, DT-inquiry@otsuka.jp
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
Yes
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
24 Jul 2017
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
24 Jul 2017
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Global end of trial reached? |
Yes
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Global end of trial date |
24 Jul 2017
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Was the trial ended prematurely? |
Yes
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General information about the trial
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Main objective of the trial |
To demonstrate that tolvaptan effectively and safely increases and maintains serum sodium concentrations in children and adolescent subjects with euvolemic or hypervolemic hyponatremia.
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Protection of trial subjects |
This trial was conducted in compliance with Good Clinical Practice guidelines for conducting, recording, and reporting trials, as well as for archiving essential documents. Consistent with ethical principles for the protection of human research subjects, no trial procedures were performed on trial candidates until written consent had been obtained from them. The informed consent form, protocol, and amendments for this trial were submitted to and approved by the institutional review board or ethics committee at each respective trial center.
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
22 Sep 2015
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
Yes
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
United Kingdom: 1
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Country: Number of subjects enrolled |
Italy: 1
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Country: Number of subjects enrolled |
United States: 7
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Worldwide total number of subjects |
9
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EEA total number of subjects |
2
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
8
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Adolescents (12-17 years) |
1
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Adults (18-64 years) |
0
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From 65 to 84 years |
0
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85 years and over |
0
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Recruitment
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Recruitment details |
A total of 42 sites were activated, 18 in the European Union and 24 in North America. After approximately 32 months of open enrollment, only 14 subjects were screened and 9 subjects were enrolled. The trial was terminated due to low subject enrollment which made the trial highly impracticable to conduct. The trial was not terminated due to safety. | ||||||||||||
Pre-assignment
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Screening details |
The trial consisted of a screening phase, two treatment phases (Phases A and B), and follow-up Phase C. Overall, in this trial, subjects underwent treatment (2 to 5 days of tolvaptan among 2 treatment phases) and a post-last dose follow-up phase of 14 days. | ||||||||||||
Period 1
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Period 1 title |
Treatment Phase A
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Is this the baseline period? |
Yes | ||||||||||||
Allocation method |
Not applicable
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Blinding used |
Not blinded | ||||||||||||
Arms
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Arm title
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Phase A: All participants | ||||||||||||
Arm description |
During Treatment Phase A, subjects received tolvaptan once daily on Days 1 and 2. If the serum sodium level did not increase at least 4 mEq/L by Day 2, treatment was extended one additional day (to Day 2a). On Day 2a, subjects achieving an increase in serum sodium of ≥ 4 mEq/L were defined as responders, and subjects not achieving a ≥ 4 mEq/L increase in serum sodium were defined as nonresponders. | ||||||||||||
Arm type |
Experimental | ||||||||||||
Investigational medicinal product name |
Tolvaptan
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet, Syrup
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Routes of administration |
Oral use
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Dosage and administration details |
Subjects received tolvaptan once daily on Days 1 and 2. If the serum sodium level did not increase at least 4 mEq/L by Day 2, treatment was extended one additional day (to Day 2a).
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Period 2
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Period 2 title |
Treatment Phase B: Responder
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Is this the baseline period? |
No | ||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Not blinded | ||||||||||||
Arms
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Are arms mutually exclusive |
No
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Arm title
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Late Withdrawal | ||||||||||||
Arm description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) from Phase A continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to the Late Withdrawal group (continuing tolvaptan treatment for Days 3 and 4). | ||||||||||||
Arm type |
Experimental | ||||||||||||
Investigational medicinal product name |
Tolvaptan
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Syrup, Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Subjects continued tolvaptan treatment on Days 3 and 4.
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Arm title
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Early Withdrawal | ||||||||||||
Arm description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) from Phase A continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to the Early Withdrawal group (not receiving additional tolvaptan on Days 3 or 4). Subjects randomized to Early Withdrawal were monitored for any interventions needed to maintain appropriate serum sodium levels. Where sodium levels declined by ≥ 4 mEq/L, or where the overall clinical condition warranted further intervention to increase serum sodium levels, subjects were treated per the investigator’s preferred standard of care. Any intervention, including fluid restriction, during the first 48 hours of the Early Withdrawal phase was defined as rescue therapy, and subject data was censored thereafter. | ||||||||||||
Arm type |
Any interventions | ||||||||||||
Investigational medicinal product name |
No investigational medicinal product assigned in this arm
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Arm title
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Treatment Phase B: Responder (Overall) | ||||||||||||
Arm description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to either the Early Withdrawal group (not receiving additional tolvaptan on Days 3 or 4) or the Late Withdrawal group (continuing tolvaptan treatment for Days 3 and 4). | ||||||||||||
Arm type |
Experimental | ||||||||||||
Investigational medicinal product name |
Tolvaptan
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Syrup, Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Subjects continued tolvaptan treatment on Days 3 and 4.
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Period 3
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Period 3 title |
Treatment Phase B: Non-responder
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Is this the baseline period? |
No | ||||||||||||
Allocation method |
Not applicable
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Blinding used |
Not blinded | ||||||||||||
Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Study Drug | ||||||||||||
Arm description |
Subjects who were nonresponders during Phase A were not randomized in Phase B but were treated per the investigator’s discretion, and continued tolvaptan for Days 3 and 4. | ||||||||||||
Arm type |
Experimental | ||||||||||||
Investigational medicinal product name |
Tolvaptan
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Syrup, Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Subjects continued tolvaptan treatment on Days 3 and 4.
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Arm title
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Standard of Care | ||||||||||||
Arm description |
Subjects who were nonresponders during Phase A were not randomized in Phase B but were treated per the investigator’s discretion. The subjects in this arm discontinued tolvaptan and received the investigator’s preferred standard of care for Days 3 and 4. | ||||||||||||
Arm type |
Standard care | ||||||||||||
Investigational medicinal product name |
No investigational medicinal product assigned in this arm
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Baseline characteristics reporting groups
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Reporting group title |
Treatment Phase A
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Reporting group description |
- | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
Phase A: All participants
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Reporting group description |
During Treatment Phase A, subjects received tolvaptan once daily on Days 1 and 2. If the serum sodium level did not increase at least 4 mEq/L by Day 2, treatment was extended one additional day (to Day 2a). On Day 2a, subjects achieving an increase in serum sodium of ≥ 4 mEq/L were defined as responders, and subjects not achieving a ≥ 4 mEq/L increase in serum sodium were defined as nonresponders. | ||
Reporting group title |
Late Withdrawal
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Reporting group description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) from Phase A continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to the Late Withdrawal group (continuing tolvaptan treatment for Days 3 and 4). | ||
Reporting group title |
Early Withdrawal
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Reporting group description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) from Phase A continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to the Early Withdrawal group (not receiving additional tolvaptan on Days 3 or 4). Subjects randomized to Early Withdrawal were monitored for any interventions needed to maintain appropriate serum sodium levels. Where sodium levels declined by ≥ 4 mEq/L, or where the overall clinical condition warranted further intervention to increase serum sodium levels, subjects were treated per the investigator’s preferred standard of care. Any intervention, including fluid restriction, during the first 48 hours of the Early Withdrawal phase was defined as rescue therapy, and subject data was censored thereafter. | ||
Reporting group title |
Treatment Phase B: Responder (Overall)
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Reporting group description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to either the Early Withdrawal group (not receiving additional tolvaptan on Days 3 or 4) or the Late Withdrawal group (continuing tolvaptan treatment for Days 3 and 4). | ||
Reporting group title |
Study Drug
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Reporting group description |
Subjects who were nonresponders during Phase A were not randomized in Phase B but were treated per the investigator’s discretion, and continued tolvaptan for Days 3 and 4. | ||
Reporting group title |
Standard of Care
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Reporting group description |
Subjects who were nonresponders during Phase A were not randomized in Phase B but were treated per the investigator’s discretion. The subjects in this arm discontinued tolvaptan and received the investigator’s preferred standard of care for Days 3 and 4. |
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End point title |
Mean Change from Baseline in Serum Sodium Concentration (mEq/L) for Responders [1] | ||||||||||||
End point description |
To assess the change in serum sodium level for responders from Day 2 (or 2a) at the end of Treatment Phase A (where all subjects received tolvaptan) to the end of Treatment Phase B for the Early compared to Late Withdrawal groups. Once a subject was randomized to Treatment Phase B, any additional therapies for the purpose of raising serum sodium, including fluid restriction, was considered rescue therapy. Upon receipt of rescue therapy, a subject’s endpoint data was collected and then censored from the efficacy analysis thereafter unless specified.
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End point type |
Primary
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End point timeframe |
Day 2/2a/3, Day 4/5
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Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The trial was terminated due to low subject recruitment and enrollment which made the trial highly impracticable or impossible to conduct. No statistical analysis was done for the primary endpoint. |
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No statistical analyses for this end point |
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End point title |
Number of subjects with adverse events (AEs) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
End point description |
An AE was defined as any untoward medical occurrence in a patient or clinical trial subject administered a medicinal product and which did not necessarily have a causal relationship with this treatment. AEs would not include information recorded as medical history at screening for pre planned procedures for which the underlying condition was known and no worsening occurred. An adverse reaction was any untoward and unintended response to an investigational medicinal product (IMP) related to any dose administered.
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End point type |
Secondary
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End point timeframe |
Adverse events were recorded from the time of the informed consent was signed until the follow-up visit 14 (+ 2) days post-last dose.
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No statistical analyses for this end point |
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End point title |
Mean change from baseline in serum sodium concentration (mEq/L) in Treatment Phase A | ||||||||||||||
End point description |
To assess the change from baseline in serum sodium concentration at the end of Day 2 (or 2a) at the end of Treatment Phase A. A hierarchical testing procedure was used to maintain the overall experiment-wise type I error rate at 0.05. Thus, if the primary efficacy analysis yielded a statistically significant result at an alpha level of 0.05 (2-sided), then the paired t-test was performed at an alpha level of 0.05 for the key secondary endpoint.
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End point type |
Secondary
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End point timeframe |
Day 2/2a
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No statistical analyses for this end point |
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End point title |
Mean change in serum sodium from 24 hours post-last dose to 7 days post-last dose in Phase B for Responders | ||||||||||||
End point description |
To assess the change in serum sodium concentration from 24 hours post-last dose to 7 days post-last dose. This analysis used a paired Student’s t-test, descriptive statistics, and/or 2-sided 95% Confidence Intervels (CIs).
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End point type |
Secondary
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End point timeframe |
7 Days
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No statistical analyses for this end point |
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End point title |
Fluid intake in Treatment Phase A | ||||||||||||||||||||||||||||
End point description |
To assess the fluid intake (both oral and intravenous [IV]) every 6 hours on Days 1 and 2 in Treatment Phase A. Fluid intake is one of the pharmacodynamic [PD] endpoints. The fluid content of foods with significant water content (eg, soup) was added to the total fluid intake. Fluid intake was monitored per institutional guidelines.
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End point type |
Secondary
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End point timeframe |
Every 6 hours on Days 1 and 2
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No statistical analyses for this end point |
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End point title |
Urine output in Treatment Phase A | ||||||||||||||||||||||||||||
End point description |
To assess the urine output 6 hours on Days 1 and 2 in Treatment Phase A. Urine output is one of the PD endpoints.
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End point type |
Secondary
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End point timeframe |
Every 6 hours on Days 1 and 2
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No statistical analyses for this end point |
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End point title |
Fluid balance (intake minus output) in Treatment Phase A | ||||||||||||||||||||||||||||
End point description |
To assess the fluid balance every 6 hours and for the 24-hour daily interval on Days 1 and 2 in Treatment Phase A. Fluid balance is one of the PD endpoints. Fluid balance was monitored per institutional guidelines.
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End point type |
Secondary
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End point timeframe |
Every 6 hours on Days 1 and 2
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No statistical analyses for this end point |
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End point title |
Incidence of Laboratory Values of Potential Clinical Relevance | ||||||||||||||||||||||||||||||||||||||||||
End point description |
The laboratory values were one of the variables to measure the safety of individual participants. Incidence of treatment emergent adverse events (TEAEs) of potential clinical relevance include abnormal values in hematology, coagulation, chemistry and urinalysis that were identified based on pre-defined criteria. Abnormal laboratory values in participants were reported as serious adverse event/adverse events (SAE/AEs) and are reported in the SAE/other AE section of this report.
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End point type |
Secondary
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End point timeframe |
From baseline to end of study
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No statistical analyses for this end point |
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End point title |
Vital sign (blood pressure) of potential clinical relevance - mean change from baseline to study for Phase B (Responders) | ||||||||||||||||||
End point description |
Vital sign (blood pressure) was assessed after the subject had been supine for greater than or equal to 3 minutes. Vital signs were assessed prior to any blood draws.
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End point type |
Secondary
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End point timeframe |
7 days post last dose
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No statistical analyses for this end point |
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End point title |
Vital sign (supine heart rate) of potential clinical relevance - mean change from baseline to study for Phase B (Responders) | ||||||||||||
End point description |
Vital sign (supine heart rate) was assessed after the subject had been supine for greater than or equal to 3 minutes. Vital signs were assessed prior to any blood draws.
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End point type |
Secondary
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End point timeframe |
7 days post last dose
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No statistical analyses for this end point |
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End point title |
Vital sign (supine respiratory rate) of potential clinical relevance - mean change from baseline to study for Phase B (Responders) | ||||||||||||
End point description |
Vital sign (supine respiratory rate) was assessed after the subject had been supine for greater than or equal to 3 minutes. Vital signs were assessed prior to any blood draws.
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End point type |
Secondary
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End point timeframe |
7 days post last dose
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No statistical analyses for this end point |
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End point title |
Vital sign (supine temperature) of potential clinical relevance - mean change from baseline to study for Phase B (Responders) | ||||||||||||
End point description |
Vital sign (blood pressure) was assessed after the subject had been supine for greater than or equal to 3 minutes. Vital signs were assessed prior to any blood draws.
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End point type |
Secondary
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End point timeframe |
7 days post last dose
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No statistical analyses for this end point |
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End point title |
Body weight of potential clinical relevance - mean change from baseline to study for Phase B (Responders) | ||||||||||||
End point description |
Body weight was measured predose each day throughout Treatment Phase B. Effort was made to ensure that body weight measurements were performed in a
reproducible and consistent manner. Body weight measurements were performed using the same scale.
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End point type |
Secondary
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End point timeframe |
7 days post last dose
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No statistical analyses for this end point |
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Adverse events information
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Timeframe for reporting adverse events |
From screening till follow-up Phase C/early termination (ET)
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Assessment type |
Non-systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
19.0
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Reporting groups
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Reporting group title |
Treatment Phase A
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Reporting group description |
During Treatment Phase A, subjects received tolvaptan once daily on Days 1 and 2. If the serum sodium level did not increase at least 4 mEq/L by Day 2, treatment was extended one additional day (to Day 2a). On Day 2a, subjects achieving an increase in serum sodium of ≥ 4 mEq/L were defined as responders, and subjects not achieving a ≥ 4 mEq/L increase in serum sodium were defined as nonresponders. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Treatment Phase B: Responder - Late Withdrawal
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Reporting group description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) from Phase A continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to the Late Withdrawal group (continuing tolvaptan treatment for Days 3 and 4). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Treatment Phase B: Responder - Early Withdrawal
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Reporting group description |
Subjects who were responders (serum sodium increased by ≥ 4 mEq/L) from Phase A continued to Treatment Phase B (Randomization Phase) on Day 3, and were randomized to the Early Withdrawal group (not receiving additional tolvaptan on Days 3 or 4). Subjects randomized to Early Withdrawal were monitored for any interventions needed to maintain appropriate serum sodium levels. Where sodium levels declined by ≥ 4 mEq/L, or where the overall clinical condition warranted further intervention to increase serum sodium levels, subjects were treated per the investigator’s preferred standard of care. Any intervention, including fluid restriction, during the first 48 hours of the Early Withdrawal phase was defined as rescue therapy, and subject data was censored thereafter. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Treatment Phase B: Non-responder - Study Drug
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Reporting group description |
Subjects who were nonresponders during Phase A were not randomized in Phase B but were treated per the investigator’s discretion, and continued tolvaptan for Days 3 and 4. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reporting group title |
Treatment Phase B: Non-responder - Standard of Care
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Reporting group description |
Subjects who were nonresponders during Phase A were not randomized in Phase B but were treated per the investigator’s discretion. The subjects in this arm discontinued tolvaptan and received the investigator’s preferred standard of care for Days 3 and 4. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||||||
Date |
Amendment |
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04 Nov 2013 |
Amendment 1:
To update the clinical management representative for this trial
To remove the serum chemistry assessment at 7 (plus/minus 1) days post-randomization
To change the sample size from 80 to 70 responders
To clarify that subjects who cannot safely swallow the tablet are excluded until a liquid formulation is available
To add neurological exam as an exploratory variable
To update the dosing rationale based on starting doses (mg/kg) used for hyponatremia trials of tolvaptan in adults
To change early termination from the 7-day Follow-up Visit to Day 5/6
To clarify that Phase B (Randomization Phase) applies to all subjects
To correct the definition of a rapid correction of serum sodium
To update the interim analysis
To update the contact list for reporting an IRE |
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19 May 2014 |
Amendment 2:
To increase the consistency of this protocol with other tolvaptan pediatric hyponatremia protocols
To add neurocognitive and quality-of-life assessments as exploratory endpoints
To clarify study design, procedures, and assessments
To better define study phases and associated visits
To provide greater detail about clinical laboratory tests
To add Tanner staging to the assessments performed during the physical examination
To better define completers and stopping rules
To incorporate newly revised definitions of IMP causality |
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26 Feb 2015 |
Amendment 3:
Implementation of additional serum sodium testing during drug titration to align with the current EU label (SmPC) for the adult indication of hyponatremia.
Safety testing for serum sodium was added at interim time points during titration with the option of using a point of care device to minimize impact on total blood volume required for the trial.
Clarification of the “baseline” assessment for trial qualification.
Additional background data from non-clinical juvenile toxicity studies.
Updates to clarify the titration and rescue therapy schematic.
Clarify roll-over into extension study 156-11-294.
Implementation of a suspension formulation for short-term use in hospitalized subjects.
Implementation of an optional swallow test for the tablet formulation.
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07 May 2015 |
Amendment 4:
Correction of typographical errors in the dosing table for the suspension for subjects taking a CYP3A inhibitor.
Removed the word “Tablet” from the title of Table 2.1.1-2 as the table includes dosing information for tolvaptan tablets and for the suspension formulation of tolvaptan.
Updated the Clinical Management contact information on the title page and in Appendix 1.
Correction of typographical error in Section 2.1.1 Dosing Rationale. |
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17 Nov 2015 |
Amendment 5 : The main intent was to clarify administrative sections, align with current protocol templates, and incorporate recent requests from Regulatory Authorities (Food and Drug Administration [FDA]). |
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Interruptions (globally) |
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Were there any global interruptions to the trial? Yes | |||||||
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Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||||||
None reported |