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A Study of Multiple Dosing Regimens of IV Conivaptan in Subjects With Euvolemic or Hypervolemic Hyponatremia

A Phase 4, Randomized, Parallel Group, Multi-Center Study to Assess the Safety and Efficacy of Multiple Dosing Regimens of IV Conivaptan in Subjects With Euvolemic or Hypervolemic Hyponatremia

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00435591
Enrollment
121
Registered
2007-02-15
Start date
2007-01-31
Completion date
2008-09-30
Last updated
2014-05-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hyponatremia, Euvolemia, Hypervolemia

Keywords

Hyponatremia, Euvolemia, Hypervolemia, Conivaptan, Vaprisol®, YM087

Brief summary

The study will evaluate the effectiveness and safety of multiple dosing regimens of IV conivaptan in subjects with euvolemic or hypervolemic hyponatremia

Interventions

ampoule or premix bag

DRUGplacebo

ampoule or premix bag

Sponsors

Cumberland Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Subject has a serum sodium value between 115 and 133 mEq/L * Subject is euvolemic or hypervolemic

Exclusion criteria

* Clinical evidence of volume depletion or dehydration * Uncontrolled brady- or tachyarrhythmias requiring emergent pacemaker placement or treatment

Design outcomes

Primary

MeasureTime frameDescription
Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 248 hoursInfusion Site Reaction (ISR) was any local event other than isolated pain, bleeding, or bruising at the site of infusion. One ISRMS has been reported for each participant & represents the most severe state of ISR for that participant. ISR scale is a health care provider assessment of ISRs using the following modified 5 point reporting scale: 0= No new reaction; 1+=Infusion site erythema, infusion site pain, infusion site warmth; 2+= Infusion site edema; 3+=Phlebitis, venous induration; 4+=Thrombophlebitis, venous thrombosis, infusion site infection, infusion site cellulitis

Secondary

MeasureTime frameDescription
Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodBaseline at 4, 6, 10, 16, 24, 30, 40, 48.5 hours and 7 days post-treatmentBaseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period. Change from Baseline is calculated as Time point minus Baseline.
Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 Hours24.5 hours, 48.5 hours and 96.5 hoursAUCna t is calculated as the baseline-adjusted area under serum sodium levels for a duration of time 0 to time t. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.
Time From the First Dose of Study Drug to a Confirmed > 4 mEq/L Increase From Baseline in Serum Sodium During the 48.5 Hour Treatment Period48.5 hoursThe upper limits of the interquartile range were not estimable in three of the treatment arms. Only the placebo loading dose + YM087 premix continuous infusion arm will be reported. Time is number of hours to reach an increase of exceeding 4 mEq/L from baseline serum sodium. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.
Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0-24.5 hours, 0-48.5 hours and 0-96.5 hoursPatients with confirmed serum sodium level exceeding 4 mEq/L increase from baseline. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.
Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0-24.5 hours, 0-48.5 hours and 0-96.5 hoursPatients with confirmed serum sodium level exceeding 6 mEq/L increase from baseline or confirmed normal serum sodium level exceeding 135 mEq/L. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.

Countries

India, Israel, United States

Participant flow

Participants by arm

ArmCount
Dose Regimen 1
Placebo loading dose + 20mg/day continuous infusion conivaptan per ampoule
28
Dose Regimen 2
Conivaptan loading dose (20mg)+ 20mg/day continuous infusion conivaptan per ampoule
30
Dose Regimen 3
Placebo loading dose + 20 mg/day continuous infusion conivaptan per premix bag
30
Dose Regimen 4
Conivaptan loading dose (20 mg) + 20 mg/day continuous infusion conivaptan per premix bag
29
Total117

Baseline characteristics

CharacteristicDose Regimen 1Dose Regimen 2Dose Regimen 3Dose Regimen 4Total
Age, Continuous59.1 years
STANDARD_DEVIATION 20.28
61.1 years
STANDARD_DEVIATION 20.14
64.8 years
STANDARD_DEVIATION 14.13
63.3 years
STANDARD_DEVIATION 22.31
62.1 years
STANDARD_DEVIATION 19.28
Race/Ethnicity, Customized
American Indian / Alaskan
0 Participants0 Participants1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Asian
14 Participants13 Participants15 Participants13 Participants55 Participants
Race/Ethnicity, Customized
Black/ African -American
0 Participants1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
White
14 Participants16 Participants14 Participants16 Participants60 Participants
Sex: Female, Male
Female
14 Participants13 Participants16 Participants18 Participants61 Participants
Sex: Female, Male
Male
14 Participants17 Participants14 Participants11 Participants56 Participants
Volume Status/ Underlying Cause of Hyponatremia
Euvolemic/ CHF
1 Participants0 Participants0 Participants0 Participants1 Participants
Volume Status/ Underlying Cause of Hyponatremia
Euvolemic/ COPD
1 Participants0 Participants0 Participants0 Participants1 Participants
Volume Status/ Underlying Cause of Hyponatremia
Euvolemic/ Idiopathic
0 Participants1 Participants1 Participants2 Participants4 Participants
Volume Status/ Underlying Cause of Hyponatremia
Euvolemic/ Malignancy
0 Participants1 Participants3 Participants0 Participants4 Participants
Volume Status/ Underlying Cause of Hyponatremia
Euvolemic/ Other
2 Participants7 Participants4 Participants6 Participants19 Participants
Volume Status/ Underlying Cause of Hyponatremia
Euvolemic/ SIADH
15 Participants11 Participants11 Participants9 Participants46 Participants
Volume Status/ Underlying Cause of Hyponatremia
Euvolemic/ Unknown
6 Participants8 Participants8 Participants10 Participants32 Participants
Volume Status/ Underlying Cause of Hyponatremia
Hypervolemic/ CHF
3 Participants2 Participants0 Participants2 Participants7 Participants
Volume Status/ Underlying Cause of Hyponatremia
Hypervolemic/ SIADH
0 Participants0 Participants1 Participants0 Participants1 Participants
Volume Status/ Underlying Cause of Hyponatremia
Hypervolemic/ Unknown
0 Participants0 Participants2 Participants0 Participants2 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
6 / 2812 / 304 / 308 / 29
serious
Total, serious adverse events
2 / 285 / 308 / 302 / 29

Outcome results

Primary

Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2

Infusion Site Reaction (ISR) was any local event other than isolated pain, bleeding, or bruising at the site of infusion. One ISRMS has been reported for each participant & represents the most severe state of ISR for that participant. ISR scale is a health care provider assessment of ISRs using the following modified 5 point reporting scale: 0= No new reaction; 1+=Infusion site erythema, infusion site pain, infusion site warmth; 2+= Infusion site edema; 3+=Phlebitis, venous induration; 4+=Thrombophlebitis, venous thrombosis, infusion site infection, infusion site cellulitis

Time frame: 48 hours

Population: Population is Safety Analysis Set (SAF): All randomized patients who received at least 1 dose of study drug.~The number of participants per arm is consistent for all categories of the data table.

ArmMeasureGroupValue (NUMBER)
Dose Regimen 1Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - No assessment0 Participants
Dose Regimen 1Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 017 Participants
Dose Regimen 1Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 1+5 Participants
Dose Regimen 1Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 2+2 Participants
Dose Regimen 1Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 3+4 Participants
Dose Regimen 1Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 4+0 Participants
Dose Regimen 2Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 3+5 Participants
Dose Regimen 2Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - No assessment1 Participants
Dose Regimen 2Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 2+0 Participants
Dose Regimen 2Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 016 Participants
Dose Regimen 2Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 4+1 Participants
Dose Regimen 2Number and Severity of Infusion Site Reactions (ISRs) Using a Modified ISR Reporting Scale for Phlebitis and Infiltration in Patients Treated With Dose Regimen 1 and Dose Regimen 2Infusion Site Reaction - 1+7 Participants
Comparison: Aggregated data were used to determine differences between groups. Statistical analysis is relevant to the aggregated data of all rows except the no assessment row.95% CI: [-0.37, 0.83]
Secondary

Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 Hours

AUCna t is calculated as the baseline-adjusted area under serum sodium levels for a duration of time 0 to time t. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.

Time frame: 24.5 hours, 48.5 hours and 96.5 hours

Population: Population is Full Analysis Set (FAS): All randomized patients who received at least 1 dose of study drug and who had both baseline and postbaseline serum sodium data.~The number of participants per arm is consistent for all categories of the data table.

ArmMeasureGroupValue (MEAN)Dispersion
Dose Regimen 1Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 24.5 hours45.600 hr * mEq/LStandard Deviation 55.919
Dose Regimen 1Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 96.5 hours375.379 hr * mEq/LStandard Deviation 331.298
Dose Regimen 1Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 48.5 hours133.664 hr * mEq/LStandard Deviation 127.156
Dose Regimen 2Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 24.5 hours70.569 hr * mEq/LStandard Deviation 73.042
Dose Regimen 2Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 96.5 hours503.127 hr * mEq/LStandard Deviation 340.247
Dose Regimen 2Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 48.5 hours194.561 hr * mEq/LStandard Deviation 166.015
Dose Regimen 3Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 48.5 hours205.522 hr * mEq/LStandard Deviation 163.261
Dose Regimen 3Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 24.5 hours66.096 hr * mEq/LStandard Deviation 73.662
Dose Regimen 3Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 96.5 hours558.926 hr * mEq/LStandard Deviation 351.718
Dose Regimen 4Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 24.5 hours82.470 hr * mEq/LStandard Deviation 82.195
Dose Regimen 4Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 96.5 hours528.377 hr * mEq/LStandard Deviation 371.075
Dose Regimen 4Baseline Adjusted Area Under the Concentration - Time Curve (AUC) in Serum Sodium Over the Duration of the First 24.5 Hours, the First 48.5 Hours, and the First 96.5 HoursAUCna at 48.5 hours207.043 hr * mEq/LStandard Deviation 170.153
Secondary

Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment Period

Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period. Change from Baseline is calculated as Time point minus Baseline.

Time frame: Baseline at 4, 6, 10, 16, 24, 30, 40, 48.5 hours and 7 days post-treatment

Population: Population is Full Analysis Set (FAS): All randomized patients who received at least 1 dose of study drug and who had both baseline and postbaseline serum sodium data.~The number of participants analyzed per arm represents Full Analysis Set. The numbers of participants for each time point are noted in the category titles.

ArmMeasureGroupValue (MEAN)Dispersion
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodBaseline124.6 mmol/LStandard Deviation 3.75
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 4 (N=28; 26; 30; 28)1.2 mmol/LStandard Deviation 3.67
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 6 (N=27; 27; 29; 27)1.1 mmol/LStandard Deviation 1.96
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 10 (N=27; 28; 30; 26)2.3 mmol/LStandard Deviation 2.92
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 16 (N=24; 24; 27; 23)2.0 mmol/LStandard Deviation 2.93
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 24 (N= 27; 27; 30; 24)3.3 mmol/LStandard Deviation 3.23
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 30 (N=27; 28; 28; 23)3.1 mmol/LStandard Deviation 4.13
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 40 (N=24; 26; 26; 24)4.3 mmol/LStandard Deviation 3.01
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 48.5 (N=26; 28; 28; 27)4.6 mmol/LStandard Deviation 4.01
Dose Regimen 1Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Day 7 (N=23; 27; 25; 17)6.7 mmol/LStandard Deviation 5.87
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 6 (N=27; 27; 29; 27)2.5 mmol/LStandard Deviation 2.88
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 48.5 (N=26; 28; 28; 27)5.8 mmol/LStandard Deviation 4.63
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 10 (N=27; 28; 30; 26)2.9 mmol/LStandard Deviation 3.09
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 16 (N=24; 24; 27; 23)4.0 mmol/LStandard Deviation 4.09
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 24 (N= 27; 27; 30; 24)4.5 mmol/LStandard Deviation 3.85
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 30 (N=27; 28; 28; 23)4.5 mmol/LStandard Deviation 3.51
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Day 7 (N=23; 27; 25; 17)9.6 mmol/LStandard Deviation 5.17
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 40 (N=24; 26; 26; 24)5.1 mmol/LStandard Deviation 4.14
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodBaseline123.5 mmol/LStandard Deviation 4.08
Dose Regimen 2Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 4 (N=28; 26; 30; 28)1.5 mmol/LStandard Deviation 2.67
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 40 (N=24; 26; 26; 24)6.9 mmol/LStandard Deviation 4.68
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 30 (N=27; 28; 28; 23)4.8 mmol/LStandard Deviation 4.14
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Day 7 (N=23; 27; 25; 17)7.2 mmol/LStandard Deviation 4.22
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodBaseline124.5 mmol/LStandard Deviation 3.67
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 10 (N=27; 28; 30; 26)2.7 mmol/LStandard Deviation 3.88
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 24 (N= 27; 27; 30; 24)4.4 mmol/LStandard Deviation 4.43
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 48.5 (N=26; 28; 28; 27)6.5 mmol/LStandard Deviation 4.19
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 4 (N=28; 26; 30; 28)0.7 mmol/LStandard Deviation 2.13
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 16 (N=24; 24; 27; 23)4.2 mmol/LStandard Deviation 3.82
Dose Regimen 3Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 6 (N=27; 27; 29; 27)1.5 mmol/LStandard Deviation 2.7
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 16 (N=24; 24; 27; 23)4.8 mmol/LStandard Deviation 3.9
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 40 (N=24; 26; 26; 24)6.1 mmol/LStandard Deviation 4.52
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 24 (N= 27; 27; 30; 24)5.0 mmol/LStandard Deviation 3.81
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Day 7 (N=23; 27; 25; 17)8.9 mmol/LStandard Deviation 5.11
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 30 (N=27; 28; 28; 23)4.1 mmol/LStandard Deviation 2.81
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 4 (N=28; 26; 30; 28)1.9 mmol/LStandard Deviation 3.92
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 6 (N=27; 27; 29; 27)2.7 mmol/LStandard Deviation 3.23
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 10 (N=27; 28; 30; 26)2.9 mmol/LStandard Deviation 3.4
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodBaseline124.0 mmol/LStandard Deviation 4.63
Dose Regimen 4Change From Baseline in Serum Sodium at Each Time Point Over the Duration of the Treatment Period and 7-day Post Treatment PeriodChange at Hour 48.5 (N=26; 28; 28; 27)5.4 mmol/LStandard Deviation 4.37
Secondary

Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours

Patients with confirmed serum sodium level exceeding 4 mEq/L increase from baseline. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.

Time frame: 0-24.5 hours, 0-48.5 hours and 0-96.5 hours

Population: Population is Full Analysis Set (FAS): All randomized patients who received at least 1 dose of study drug and who had both baseline and postbaseline serum sodium data.~The number of participants per arm is consistent for all categories of the data table.

ArmMeasureGroupValue (NUMBER)
Dose Regimen 1Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours6 Participants
Dose Regimen 1Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours21 Participants
Dose Regimen 1Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours13 Participants
Dose Regimen 2Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours13 Participants
Dose Regimen 2Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours22 Participants
Dose Regimen 2Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours15 Participants
Dose Regimen 3Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours23 Participants
Dose Regimen 3Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours13 Participants
Dose Regimen 3Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours27 Participants
Dose Regimen 4Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours10 Participants
Dose Regimen 4Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours24 Participants
Dose Regimen 4Number of Patients With Confirmed Serum Sodium Level Exceeding 4 mEq/L Increase From Baseline Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours19 Participants
Secondary

Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours

Patients with confirmed serum sodium level exceeding 6 mEq/L increase from baseline or confirmed normal serum sodium level exceeding 135 mEq/L. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.

Time frame: 0-24.5 hours, 0-48.5 hours and 0-96.5 hours

Population: Population is Full Analysis Set (FAS): All randomized patients who received at least 1 dose of study drug and who had both baseline and postbaseline serum sodium data.~The number of participants per arm is consistent for all categories of the data table.

ArmMeasureGroupValue (NUMBER)
Dose Regimen 1Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours1 Participants
Dose Regimen 1Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours13 Participants
Dose Regimen 1Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours6 Participants
Dose Regimen 2Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours6 Participants
Dose Regimen 2Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours16 Participants
Dose Regimen 2Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours13 Participants
Dose Regimen 3Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours17 Participants
Dose Regimen 3Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours7 Participants
Dose Regimen 3Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours24 Participants
Dose Regimen 4Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 24.5 Hours6 Participants
Dose Regimen 4Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 96.5 Hours19 Participants
Dose Regimen 4Number of Patients With Confirmed Serum Sodium Level Exceeding 6 mEq/L Increase From Baseline or Confirmed Normal Serum Sodium Level Exceeding 135 mEq/L Over the Duration 0-24.5 Hours, 0-48.5 Hours, and 0-96.5 Hours0 - 48.5 Hours12 Participants
Secondary

Time From the First Dose of Study Drug to a Confirmed > 4 mEq/L Increase From Baseline in Serum Sodium During the 48.5 Hour Treatment Period

The upper limits of the interquartile range were not estimable in three of the treatment arms. Only the placebo loading dose + YM087 premix continuous infusion arm will be reported. Time is number of hours to reach an increase of exceeding 4 mEq/L from baseline serum sodium. Baseline serum sodium value is the average of 2 serum sodium values taken at least 4 hours apart on Day-1 and within 24 hours of Hour 0 in the Treatment Period.

Time frame: 48.5 hours

Population: Population is Full Analysis Set (FAS): All randomized patients who received at least 1 dose of study drug and who had both baseline and postbaseline serum sodium data.~The number of participants per arm is consistent for all categories of the data table.

ArmMeasureValue (MEDIAN)
Dose Regimen 1Time From the First Dose of Study Drug to a Confirmed > 4 mEq/L Increase From Baseline in Serum Sodium During the 48.5 Hour Treatment Period24.08 Hours

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026