Trial Outcomes & Findings for Patiromer for the Management of Hyperkalemia in Subjects Receiving RAASi Medications for the Treatment of Heart Failure (DIAMOND) (NCT NCT03888066)

NCT ID: NCT03888066

Last Updated: 2023-02-24

Results Overview

Adjusted mean changes in serum K+ from Baseline.

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

1195 participants

Primary outcome timeframe

Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo

Results posted on

2023-02-24

Participant Flow

From a total of 1642 screened participants, 1195 entered the Run-in Phase. The Run-in Phase Set includes participants who signed the informed consent and received at least 1 dose of patiromer during the Run-in Phase but were not eligible to be randomized. A total of 1168 participants received patiromer during Run-in Phase, and 878 of these participants were randomized to receive patiromer or placebo during the Treatment Phase

Participant milestones

Participant milestones
Measure
Patiromer
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose). mEq/l = Milliequivalents Per Liter
Placebo
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose). mEq/l = Milliequivalents Per Liter
Run-in Phase
STARTED
1195
0
Run-in Phase
COMPLETED
878
0
Run-in Phase
NOT COMPLETED
317
0
Treatment Phase (Overall Study)
STARTED
439
439
Treatment Phase (Overall Study)
COMPLETED
360
367
Treatment Phase (Overall Study)
NOT COMPLETED
79
72

Reasons for withdrawal

Reasons for withdrawal
Measure
Patiromer
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose). mEq/l = Milliequivalents Per Liter
Placebo
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose). mEq/l = Milliequivalents Per Liter
Run-in Phase
Randomization Criterion #1
24
0
Run-in Phase
Randomization Criteria #1, #2
5
0
Run-in Phase
Randomization Criteria #1, #2 #4; AE; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
1
0
Run-in Phase
Randomization Criteria #1, #3
1
0
Run-in Phase
Randomization Criteria #1, #4
1
0
Run-in Phase
Randomization Crit #1, #4; Withdraw By Subject; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
1
0
Run-in Phase
Randomization Criteria #1, #4; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
1
0
Run-in Phase
Randomization Criterion #1; AE
4
0
Run-in Phase
Randomization Criterion #1; AE; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
1
0
Run-in Phase
Randomization Criterion #1; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
2
0
Run-in Phase
Randomization Criterion #2
5
0
Run-in Phase
Randomization Criteria #2, #3
1
0
Run-in Phase
Randomization Criteria #2, #3, #4
1
0
Run-in Phase
Randomization Criteria #2, #4
4
0
Run-in Phase
Randomization Criterion #3
11
0
Run-in Phase
Randomization Criteria #3, #4
1
0
Run-in Phase
Randomization Criteria #3, #4; 2 Wks After Taking Min 0 Packet/Day, sK+ Is < 4.0 Meq/L
2
0
Run-in Phase
Randomization Criterion #3; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
1
0
Run-in Phase
Randomization Criterion #4
3
0
Run-in Phase
Randomization Criterion #3; Physician Decision
1
0
Run-in Phase
Randomization Criterion #4; AE
4
0
Run-in Phase
Randomization Criterion #4; AE; 2 Wks After Taking Min 0 Packet/Day, sK+ Is < 4.0 Meq/L
1
0
Run-in Phase
Randomization Criterion #3; Exceeded 12 Weeks Of Run In
1
0
Run-in Phase
Randomization Criterion #4; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
2
0
Run-in Phase
Randomization Criterion #4; 2 Wks After Taking Min 0 Packet/Day, sK+ Is < 4.0 Meq/L
1
0
Run-in Phase
AE (Adverse Event)
17
0
Run-in Phase
AE; Withdrawal By Subject
3
0
Run-in Phase
AE; Withdrawal By Subject; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
1
0
Run-in Phase
AE; 1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
1
0
Run-in Phase
AE; 2 Wks After Taking Min 0 Packet/Day, sK+ Is < 4.0 Meq/L
2
0
Run-in Phase
Withdrawal by Subject
43
0
Run-in Phase
AE; Physician Decision
1
0
Run-in Phase
1 Wk After 3 Patiromer Packets/Day, sK+ >5.0 Meq/L
10
0
Run-in Phase
Withdrawal By Subject; Withdrawal Of Consent
1
0
Run-in Phase
2 Wks After Taking Min 0 Packet/Day, sK+ Is < 4.0 Meq/L
6
0
Run-in Phase
Death
1
0
Run-in Phase
Non-Compliance With Study Drug
2
0
Run-in Phase
Physician Decision
1
0
Run-in Phase
Protocol Violation
13
0
Run-in Phase
Sponsor Request
34
0
Run-in Phase
Study Terminated By Sponsor
71
0
Run-in Phase
Withdrawal Of Consent
1
0
Run-in Phase
Exceeded 12 Weeks Of Run In
2
0
Run-in Phase
Not treated with Patiromer during Run-in
27
0
Treatment Phase (Overall Study)
Protocol Violation
0
1
Treatment Phase (Overall Study)
Physician Decision
20
13
Treatment Phase (Overall Study)
Adverse Event
27
21
Treatment Phase (Overall Study)
Lost to Follow-up
1
0
Treatment Phase (Overall Study)
Consent withdrawn by subject
21
25
Treatment Phase (Overall Study)
End of study visit not completed/delayed
1
3
Treatment Phase (Overall Study)
Early study termination
0
1
Treatment Phase (Overall Study)
Treatment discontinuation
2
2
Treatment Phase (Overall Study)
Delayed visit and insufficient study
6
6
Treatment Phase (Overall Study)
Sponsor's decision
1
0

Baseline Characteristics

Patiromer for the Management of Hyperkalemia in Subjects Receiving RAASi Medications for the Treatment of Heart Failure (DIAMOND)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Patiromer
n=439 Participants
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
n=439 Participants
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Total
n=878 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Age, Categorical
Between 18 and 65 years
181 Participants
n=5 Participants
169 Participants
n=7 Participants
350 Participants
n=5 Participants
Age, Categorical
>=65 years
258 Participants
n=5 Participants
270 Participants
n=7 Participants
528 Participants
n=5 Participants
Age, Continuous
66.6 years
STANDARD_DEVIATION 10.0 • n=5 Participants
67.1 years
STANDARD_DEVIATION 9.9 • n=7 Participants
66.9 years
STANDARD_DEVIATION 10.0 • n=5 Participants
Sex: Female, Male
Female
112 Participants
n=5 Participants
126 Participants
n=7 Participants
238 Participants
n=5 Participants
Sex: Female, Male
Male
327 Participants
n=5 Participants
313 Participants
n=7 Participants
640 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
56 Participants
n=5 Participants
57 Participants
n=7 Participants
113 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
381 Participants
n=5 Participants
379 Participants
n=7 Participants
760 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants
n=5 Participants
3 Participants
n=7 Participants
5 Participants
n=5 Participants
Region of Enrollment
Argentina
16 participants
n=5 Participants
16 participants
n=7 Participants
32 participants
n=5 Participants
Region of Enrollment
Belgium
0 participants
n=5 Participants
2 participants
n=7 Participants
2 participants
n=5 Participants
Region of Enrollment
Brazil
6 participants
n=5 Participants
10 participants
n=7 Participants
16 participants
n=5 Participants
Region of Enrollment
Bulgaria
43 participants
n=5 Participants
48 participants
n=7 Participants
91 participants
n=5 Participants
Region of Enrollment
Canada
1 participants
n=5 Participants
0 participants
n=7 Participants
1 participants
n=5 Participants
Region of Enrollment
Czechia
2 participants
n=5 Participants
7 participants
n=7 Participants
9 participants
n=5 Participants
Region of Enrollment
France
1 participants
n=5 Participants
1 participants
n=7 Participants
2 participants
n=5 Participants
Region of Enrollment
Georgia
139 participants
n=5 Participants
118 participants
n=7 Participants
257 participants
n=5 Participants
Region of Enrollment
Germany
4 participants
n=5 Participants
2 participants
n=7 Participants
6 participants
n=5 Participants
Region of Enrollment
Hungary
8 participants
n=5 Participants
11 participants
n=7 Participants
19 participants
n=5 Participants
Region of Enrollment
Israel
8 participants
n=5 Participants
4 participants
n=7 Participants
12 participants
n=5 Participants
Region of Enrollment
Italy
3 participants
n=5 Participants
4 participants
n=7 Participants
7 participants
n=5 Participants
Region of Enrollment
Mexico
6 participants
n=5 Participants
4 participants
n=7 Participants
10 participants
n=5 Participants
Region of Enrollment
Netherlands
3 participants
n=5 Participants
1 participants
n=7 Participants
4 participants
n=5 Participants
Region of Enrollment
Poland
37 participants
n=5 Participants
43 participants
n=7 Participants
80 participants
n=5 Participants
Region of Enrollment
Russia
37 participants
n=5 Participants
42 participants
n=7 Participants
79 participants
n=5 Participants
Region of Enrollment
Serbia
3 participants
n=5 Participants
5 participants
n=7 Participants
8 participants
n=5 Participants
Region of Enrollment
Spain
11 participants
n=5 Participants
14 participants
n=7 Participants
25 participants
n=5 Participants
Region of Enrollment
Ukraine
81 participants
n=5 Participants
75 participants
n=7 Participants
156 participants
n=5 Participants
Region of Enrollment
United States
30 participants
n=5 Participants
32 participants
n=7 Participants
62 participants
n=5 Participants

PRIMARY outcome

Timeframe: Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo

Adjusted mean changes in serum K+ from Baseline.

Outcome measures

Outcome measures
Measure
Patiromer
n=439 Participants
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
n=439 Participants
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Changes in Serum K+ Levels From Baseline
0.029 Milliequivalents Per Liter (mEq/l)
Standard Error 0.019
0.127 Milliequivalents Per Liter (mEq/l)
Standard Error 0.019

SECONDARY outcome

Timeframe: From Day 1/Baseline to week 90

Cumulative incidence of the first event of hyperkalemia with a serum K+ value \>5.5 mEq/l taking death as competing and calculated as CIF Estimates (95% CI) over time. Aalen-Johansen estimators of the cumulative incidence function with death as a competing event. CIF = cumulative incidence function; mEq/l = Milliequivalents Per Liter

Outcome measures

Outcome measures
Measure
Patiromer
n=439 Participants
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
n=439 Participants
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 78
0.30 Probability
Interval 0.22 to 0.4
0.34 Probability
Interval 0.26 to 0.42
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 1
0.02 Probability
Interval 0.01 to 0.04
0.04 Probability
Interval 0.03 to 0.06
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 2
0.04 Probability
Interval 0.02 to 0.06
0.08 Probability
Interval 0.06 to 0.11
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 6
0.05 Probability
Interval 0.03 to 0.07
0.10 Probability
Interval 0.08 to 0.13
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 18
0.08 Probability
Interval 0.06 to 0.12
0.14 Probability
Interval 0.11 to 0.18
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 30
0.13 Probability
Interval 0.1 to 0.17
0.20 Probability
Interval 0.15 to 0.24
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 42
0.17 Probability
Interval 0.12 to 0.22
0.24 Probability
Interval 0.19 to 0.29
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 54
0.21 Probability
Interval 0.15 to 0.27
0.29 Probability
Interval 0.23 to 0.35
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 66
0.25 Probability
Interval 0.18 to 0.32
0.34 Probability
Interval 0.26 to 0.42
CIF Estimates of the Time to First Hyperkalemia Event With Serum K+ Level > 5.5 mEq/l Over Time
Week 90
0.34 Probability
Interval 0.23 to 0.44
0.34 Probability
Interval 0.26 to 0.42

SECONDARY outcome

Timeframe: From Day 1/Baseline to week 102

Cumulative incidence of the reduction of the MRA dose below target dose calculated as CIF Estimates (95% CI) over time. Note: The reduction below the MRA target dose must last for at least 14 days (orless if at the end of study) to confirm this endpoint. CIF = cumulative incidence function; mEq/l = Milliequivalents Per Liter

Outcome measures

Outcome measures
Measure
Patiromer
n=439 Participants
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
n=439 Participants
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 18
0.10 Probability
Interval 0.08 to 0.14
0.15 Probability
Interval 0.12 to 0.19
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 30
0.14 Probability
Interval 0.1 to 0.18
0.19 Probability
Interval 0.15 to 0.23
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 1
0.02 Probability
Interval 0.01 to 0.04
0.04 Probability
Interval 0.03 to 0.07
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 2
0.03 Probability
Interval 0.02 to 0.05
0.08 Probability
Interval 0.06 to 0.11
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 6
0.06 Probability
Interval 0.04 to 0.08
0.12 Probability
Interval 0.09 to 0.15
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 42
0.16 Probability
Interval 0.12 to 0.21
0.23 Probability
Interval 0.18 to 0.28
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 54
0.19 Probability
Interval 0.14 to 0.24
0.26 Probability
Interval 0.2 to 0.32
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 66
0.22 Probability
Interval 0.16 to 0.29
0.27 Probability
Interval 0.21 to 0.33
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 78
0.27 Probability
Interval 0.2 to 0.35
0.29 Probability
Interval 0.22 to 0.36
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 90
0.27 Probability
Interval 0.2 to 0.35
0.29 Probability
Interval 0.22 to 0.36
CIF Estimates of the Reduction of the MRA Dose Below Target Dose Over Time
Week 102
0.27 Probability
Interval 0.2 to 0.35
NA Probability
Interval 0.0 to 0.0
Not feasible to estimate the cumulative incidence at a time beyond the largest observed time

SECONDARY outcome

Timeframe: Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo

Participant's follow-up is from the date of the first dose of randomized study medication up to the participant's end of study date or 24 Jun 2021, whichever comes first. Annualized event rate per 100 subject-years= The total number of events for all subjects in the treatment group divided by the total subject-years of follow-up in that treatment group multiplied by 100.

Outcome measures

Outcome measures
Measure
Patiromer
n=439 Participants
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
n=439 Participants
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Investigator-reported Events of Hyperkalemia
82.38 Ann. event rate per 100 subject-years
114.65 Ann. event rate per 100 subject-years

SECONDARY outcome

Timeframe: Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo

Analyzed using Win Ratio approach with the following hierarchical components: 1. Time to CV death 2. Total number of CV hospitalizations 3. Total number of hyperkalemia toxicity events with serum K+ \>6.5 mEq/l 4. Total number of hyperkalemia events with serum K+ \>6.0-6.5 mEq/l 5. Total number of hyperkalemia events with serum K+ \>5.0 mEq/l MHTE=More hyperkalemia toxicity events; MHE=More hyperkalemia events; CV=Cardiovascular

Outcome measures

Outcome measures
Measure
Patiromer
n=878 Participants
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Hyperkalemia-related Hard Outcomes Endpoints
More CV hospitalizations in Patiromer Group
4178 Events
Hyperkalemia-related Hard Outcomes Endpoints
MHTE with serum K+>6.5 in Patiromer Group
401 Events
Hyperkalemia-related Hard Outcomes Endpoints
MHE with serum K+>6.0-6.5 in Placebo Group
4283 Events
Hyperkalemia-related Hard Outcomes Endpoints
MHE with serum K+>6.0-6.5 in Patiromer Group
1446 Events
Hyperkalemia-related Hard Outcomes Endpoints
MHE with serum K+>5.0-6.0 in Placebo Group
55633 Events
Hyperkalemia-related Hard Outcomes Endpoints
CV death in Placebo Group First
3491 Events
Hyperkalemia-related Hard Outcomes Endpoints
CV death in Patiromer Group First
4609 Events
Hyperkalemia-related Hard Outcomes Endpoints
More CV hospitalizations in Placebo Group
4539 Events
Hyperkalemia-related Hard Outcomes Endpoints
MHTE with serum K+>6.5 in Placebo Group
419 Events
Hyperkalemia-related Hard Outcomes Endpoints
MHE with serum K+>5.0-6.0 in Patiromer Group
34156 Events
Hyperkalemia-related Hard Outcomes Endpoints
None of the above
79566 Events
Hyperkalemia-related Hard Outcomes Endpoints
Total number of pairs
192721 Events

SECONDARY outcome

Timeframe: Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo

RAASi use score (0 to 8 points) analyzed using the Win Ratio approach for each pair of participants with the following additive components: 1. All-cause death 2. Occurrence of a CV hospitalization 3. HF medication use and dose for i) an ACEi/ARB/ARNi, ii) a MRA, and iii) a beta-blocker Each participant in each comparison can have 0-8 points and all participants are compared using this score at the respective appropriate follow-up time point. RAASi=renin-angiotensin-aldosterone system inhibitor; ACEi=angiotensin converting enzyme inhibitor; ARB=angiotensin receptor blocker; ARNi=angiotensin receptor/neprilysin inhibitor; MRA=mineralocorticoid receptor antagonist.

Outcome measures

Outcome measures
Measure
Patiromer
n=878 Participants
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
RAASi Use Score
Number of wins in Patiromer Group
62073 Events
RAASi Use Score
Number of wins in Placebo Group
49733 Events
RAASi Use Score
Number of ties
80915 Events
RAASi Use Score
Total number of pairs
192721 Events

Adverse Events

Patiromer

Serious events: 54 serious events
Other events: 320 other events
Deaths: 24 deaths

Placebo

Serious events: 58 serious events
Other events: 325 other events
Deaths: 18 deaths

Serious adverse events

Serious adverse events
Measure
Patiromer
n=439 participants at risk
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
n=439 participants at risk
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Vascular disorders
Peripheral ischaemia
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Vascular disorders
Hypotension
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Vascular disorders
Orthostatic hypotension
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Pancoast's tumour
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Plasmacytoma
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Thyroid neoplasm
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
General disorders
Sudden death
2.3%
10/439 • Number of events 10 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
2.3%
10/439 • Number of events 10 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
General disorders
Death
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Injury, poisoning and procedural complications
Road traffic accident
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Injury, poisoning and procedural complications
Traumatic intracranial haemorrhage
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Injury, poisoning and procedural complications
Vascular procedure complication
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Investigations
Ultrasound pancreas abnormal
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Cardiac failure
2.1%
9/439 • Number of events 10 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
3.4%
15/439 • Number of events 18 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Angina unstable
0.68%
3/439 • Number of events 3 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.68%
3/439 • Number of events 3 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Acute left ventricular failure
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Atrial fibrillation
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Acute coronary syndrome
0.23%
1/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Acute myocardial infarction
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Cardiac failure congestive
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Ventricular tachycardia
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Angina pectoris
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Left ventricular failure
0.23%
1/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Myocardial infarction
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Myocardial ischaemia
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Ventricular extrasystoles
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Cardiac arrest
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Cardiomyopathy
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Coronary artery disease
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Pulseless electrical activity
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Cardiac failure acute
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.91%
4/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Cardiac failure chronic
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Acute pulmonary oedema
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Acute respiratory failure
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Chronic obstructive pulmonary disease
0.23%
1/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Respiratory failure
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Respiratory arrest
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Vocal cord dysfunction
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Blood and lymphatic system disorders
Anaemia
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.68%
3/439 • Number of events 4 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Ischaemic stroke
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Cerebral haemorrhage
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Cerebral infarction
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Transient ischaemic attack
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Brain injury
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Cerebrovascular accident
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Status epilepticus
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Vascular encephalopathy
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Ear and labyrinth disorders
Vertigo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Intestinal pseudo-obstruction
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Vomiting
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Inflammatory bowel disease
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Rectal haemorrhage
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Umbilical hernia
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Hepatobiliary disorders
Cholecystitis acute
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Renal and urinary disorders
Renal failure
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Renal and urinary disorders
Acute kidney injury
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Renal and urinary disorders
Calculus urinary
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Renal and urinary disorders
End stage renal disease
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Skin and subcutaneous tissue disorders
Diabetic foot
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Musculoskeletal and connective tissue disorders
Muscle atrophy
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Dehydration
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Decreased appetite
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hypoglycaemia
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hypokalaemia
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hyperglycaemia
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
Pneumonia
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.4%
6/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
COVID-19
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.68%
3/439 • Number of events 3 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
COVID-19 pneumonia
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
Cellulitis
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
Gangrene
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
Endocarditis
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo

Other adverse events

Other adverse events
Measure
Patiromer
n=439 participants at risk
Randomized participants who received a daily dose of patiromer, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of patiromer was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, patiromer was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of patiromer were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Placebo
n=439 participants at risk
Randomized participants who received a daily dose of placebo, with possible dose adjustments based on subsequent local serum potassium level, during the Treatment Phase. The starting dose of placebo was 1 packet/day taken either with food or without food. Based upon the K+ management algorithms, placebo was to be increased by 1 packet per day in intervals of at least 1 week (±3 days). If hypokalemia developed during the Treatment Phase, then the study drug was to be down-titrated (lowest acceptable dose was 0 packets/day) until local serum K+ ≥4.0 mEq/l. Doses of placebo were 0 packets/day, 1 packet/day, 2 packets/day, and 3 packets/day (maximum dose).
Vascular disorders
Hypotension
3.4%
15/439 • Number of events 17 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
3.0%
13/439 • Number of events 14 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Vascular disorders
Hypertension
1.8%
8/439 • Number of events 8 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
General disorders
Asthenia
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.8%
8/439 • Number of events 9 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
General disorders
Oedema peripheral
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Reproductive system and breast disorders
Gynaecomastia
1.4%
6/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Investigations
Glomerular filtration rate decreased
3.4%
15/439 • Number of events 19 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
2.3%
10/439 • Number of events 14 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Investigations
Blood creatinine increased
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Cardiac failure
2.3%
10/439 • Number of events 11 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
2.3%
10/439 • Number of events 11 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Cardiac disorders
Atrial fibrillation
1.1%
5/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.68%
3/439 • Number of events 3 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Blood and lymphatic system disorders
Anaemia
2.5%
11/439 • Number of events 11 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Blood and lymphatic system disorders
Iron deficiency anaemia
2.1%
9/439 • Number of events 9 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.6%
7/439 • Number of events 7 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Hydrothorax
1.4%
6/439 • Number of events 7 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Acute respiratory failure
1.1%
5/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Respiratory, thoracic and mediastinal disorders
Dyspnoea
0.91%
4/439 • Number of events 4 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 7 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Nervous system disorders
Headache
2.1%
9/439 • Number of events 9 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
2.5%
11/439 • Number of events 14 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Diarrhoea
4.3%
19/439 • Number of events 20 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
3.4%
15/439 • Number of events 15 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Constipation
2.5%
11/439 • Number of events 13 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Gastrointestinal disorders
Abdominal pain upper
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Renal and urinary disorders
Chronic kidney disease
1.1%
5/439 • Number of events 7 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.8%
8/439 • Number of events 8 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Renal and urinary disorders
Renal impairment
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.6%
7/439 • Number of events 7 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Musculoskeletal and connective tissue disorders
Back pain
2.3%
10/439 • Number of events 11 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.4%
6/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Musculoskeletal and connective tissue disorders
Arthralgia
1.4%
6/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.68%
3/439 • Number of events 3 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hyperkalaemia
44.9%
197/439 • Number of events 335 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
54.2%
238/439 • Number of events 412 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hypokalaemia
15.0%
66/439 • Number of events 75 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
10.7%
47/439 • Number of events 53 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hypomagnesaemia
4.3%
19/439 • Number of events 20 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
5.0%
22/439 • Number of events 25 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hyperglycaemia
2.3%
10/439 • Number of events 11 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.68%
3/439 • Number of events 3 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Diabetes mellitus
1.6%
7/439 • Number of events 7 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Iron deficiency
1.4%
6/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.46%
2/439 • Number of events 2 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Metabolism and nutrition disorders
Hyponatraemia
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.1%
5/439 • Number of events 5 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
Pneumonia
1.6%
7/439 • Number of events 8 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
0.23%
1/439 • Number of events 1 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
COVID-19
1.4%
6/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.4%
6/439 • Number of events 8 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
Infections and infestations
Respiratory tract infection viral
0.00%
0/439 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo
1.4%
6/439 • Number of events 6 • Mean duration of exposure: 227.9 days for Patiromer and 234.5 days for Placebo

Additional Information

DIAMOND Clinical Study Team

Vifor Pharma, Inc.

Phone: +41 588 518 000

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place

Restriction type: OTHER