Trial Outcomes & Findings for Spironolactone With Patiromer in the Treatment of Resistant Hypertension in Chronic Kidney Disease (NCT NCT03071263)

NCT ID: NCT03071263

Last Updated: 2021-05-12

Results Overview

The proportion of subjects remaining on spironolactone at Week 12 will be compared between treatment groups (spironolactone/patiromer versus spironolactone/placebo). Subjects who discontinued from the study early or discontinued study spironolactone prior to Week 12, for any reason, were considered as not having remained on spironolactone until Week 12.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

295 participants

Primary outcome timeframe

At week 12

Results posted on

2021-05-12

Participant Flow

Participant milestones

Participant milestones
Measure
Group 1 - Patiromer
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Overall Study
STARTED
147
148
Overall Study
COMPLETED
144
141
Overall Study
NOT COMPLETED
3
7

Reasons for withdrawal

Reasons for withdrawal
Measure
Group 1 - Patiromer
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Overall Study
Adverse Event
1
3
Overall Study
Withdrawal by Subject
1
3
Overall Study
Physician Decision
1
0
Overall Study
Participant moved to another city
0
1

Baseline Characteristics

Spironolactone With Patiromer in the Treatment of Resistant Hypertension in Chronic Kidney Disease

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Group 1 - Patiromer
n=147 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Total
n=295 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
49 Participants
n=5 Participants
44 Participants
n=7 Participants
93 Participants
n=5 Participants
Age, Categorical
>=65 years
98 Participants
n=5 Participants
104 Participants
n=7 Participants
202 Participants
n=5 Participants
Age, Continuous
67.8 years
STANDARD_DEVIATION 12.24 • n=5 Participants
68.5 years
STANDARD_DEVIATION 11.13 • n=7 Participants
68.1 years
STANDARD_DEVIATION 11.69 • n=5 Participants
Sex: Female, Male
Female
71 Participants
n=5 Participants
71 Participants
n=7 Participants
142 Participants
n=5 Participants
Sex: Female, Male
Male
76 Participants
n=5 Participants
77 Participants
n=7 Participants
153 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
7 Participants
n=5 Participants
16 Participants
n=7 Participants
23 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
140 Participants
n=5 Participants
131 Participants
n=7 Participants
271 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
1 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
2 Participants
n=5 Participants
2 Participants
n=7 Participants
4 Participants
n=5 Participants
Race (NIH/OMB)
White
145 Participants
n=5 Participants
145 Participants
n=7 Participants
290 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
1 Participants
n=7 Participants
1 Participants
n=5 Participants
Baseline central laboratory serum potassium
Baseline serum potassium <4.3 mEq/L
7 Participants
n=5 Participants
17 Participants
n=7 Participants
24 Participants
n=5 Participants
Baseline central laboratory serum potassium
Baseline serum potassium 4.3-<4.7 mEq/L
55 Participants
n=5 Participants
52 Participants
n=7 Participants
107 Participants
n=5 Participants
Baseline central laboratory serum potassium
Baseline serum potassium 4.7-5.1 mEq/L
65 Participants
n=5 Participants
65 Participants
n=7 Participants
130 Participants
n=5 Participants
Baseline central laboratory serum potassium
Baseline serum potassium >5.1 mEq/L
20 Participants
n=5 Participants
14 Participants
n=7 Participants
34 Participants
n=5 Participants
Baseline eGFR
35.37 mL/min/1.73m^2
STANDARD_DEVIATION 7.274 • n=5 Participants
36.08 mL/min/1.73m^2
STANDARD_DEVIATION 7.597 • n=7 Participants
35.73 mL/min/1.73m^2
STANDARD_DEVIATION 7.434 • n=5 Participants
Systolic blood pressure as measured using automated office blood pressure device (AOBP SBP)
143.3 mmHg
STANDARD_DEVIATION 6.48 • n=5 Participants
144.9 mmHg
STANDARD_DEVIATION 7.01 • n=7 Participants
144.1 mmHg
STANDARD_DEVIATION 6.79 • n=5 Participants
Antihypertensive Medications at Baseline
Perindopril
54 Participants
n=5 Participants
51 Participants
n=7 Participants
105 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Valsartan
38 Participants
n=5 Participants
27 Participants
n=7 Participants
65 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Losartan
20 Participants
n=5 Participants
26 Participants
n=7 Participants
46 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Indapamide
62 Participants
n=5 Participants
58 Participants
n=7 Participants
120 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Hydrochlorothiazide
52 Participants
n=5 Participants
60 Participants
n=7 Participants
112 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Furosemide
26 Participants
n=5 Participants
17 Participants
n=7 Participants
43 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Torasemide
15 Participants
n=5 Participants
17 Participants
n=7 Participants
32 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Amlodipine
74 Participants
n=5 Participants
86 Participants
n=7 Participants
160 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Lercanidipine
18 Participants
n=5 Participants
15 Participants
n=7 Participants
33 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Bisoprolol
34 Participants
n=5 Participants
43 Participants
n=7 Participants
77 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Nebivolol
26 Participants
n=5 Participants
19 Participants
n=7 Participants
45 Participants
n=5 Participants
Antihypertensive Medications at Baseline
Other antihypertensives
40 Participants
n=5 Participants
31 Participants
n=7 Participants
71 Participants
n=5 Participants

PRIMARY outcome

Timeframe: At week 12

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo.

The proportion of subjects remaining on spironolactone at Week 12 will be compared between treatment groups (spironolactone/patiromer versus spironolactone/placebo). Subjects who discontinued from the study early or discontinued study spironolactone prior to Week 12, for any reason, were considered as not having remained on spironolactone until Week 12.

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=147 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Number of Participants Remaining on Spironolactone at Week 12
126 Participants
98 Participants

SECONDARY outcome

Timeframe: From baseline to Week 12

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo.

AOBP: Automated Office Blood Pressure SBP: Systolic Blood Pressure BP: Blood Pressure

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=144 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=141 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Change in AOBP SBP From Baseline to Week 12 or Last Available AOBP SBP Prior to Addition of Any New BP Medications or Increase From Any Baseline BP Medications
-11.3 mmHg
Standard Deviation 14.11
-11.0 mmHg
Standard Deviation 15.34

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to Week 12

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo.

AOBP SBP: Automated Office Systolic Blood Pressure

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=144 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=141 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Change in AOBP SBP From Baseline to Week 12 Regardless of Increase in Antihypertensives
-11.3 mmHg
Standard Deviation 14.11
-11.2 mmHg
Standard Deviation 15.04

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to Week 12

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo. Table depicts those participants with values at Baseline and Week 12. Those participants with no available results at W12 were not included in the table below.

The two baseline potassium subgroups, 4.3-\<4.7 mEq/L versus 4.7-5.1 mEq/L, are based on central laboratory data. If a participant's serum potassium result at baseline was not in one of the two subgroups reported below, the participant's potassium stratum at randomization was used. Therefore, participants with BCSP \<4.3 mEq/L or \>5.1 mEq/L at baseline (Day 0) have been classified according to their serum potassium values at the Screening period.

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=144 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=140 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Central Serum Potassium Change From Baseline to Week 12 by Baseline Serum Potassium Category
Baseline Central Serum Potassium 4.3-<4.7 mEq/L
0.16 mEq/L
Standard Deviation 0.468
0.40 mEq/L
Standard Deviation 0.494
Central Serum Potassium Change From Baseline to Week 12 by Baseline Serum Potassium Category
Baseline Central Serum Potassium 4.7-<5.1 mEq/L
-0.09 mEq/L
Standard Deviation 0.442
0.03 mEq/L
Standard Deviation 0.468
Central Serum Potassium Change From Baseline to Week 12 by Baseline Serum Potassium Category
Overall
0.02 mEq/L
Standard Deviation 0.469
0.20 mEq/L
Standard Deviation 0.514

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to Week 12

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo. Table depicts those participants with values at mentioned time frame. Those participants with no available results were not included in the table below.

Baseline Central Serum Potassium: BCSP. The symbols \> and ≤ included in the row titles are used to indicate the time interval \["\>Week1 and ≤Week2" meaning from day 8 until day 14 (included)\]. If a participant's serum potassium result at baseline was not in one of the two subgroups reported below, the participant's potassium stratum at randomization was used. Therefore, participants with BCSP \<4.3 mEq/L or \>5.1 mEq/L at baseline (Day 0) have been classified according to their serum potassium values at the Screening period.

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=147 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: ≤Week1
60 Participants
62 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: >Week1 and ≤Week2
57 Participants
57 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: >Week 2 and ≤Week 3
59 Participants
63 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: >Week 3 and ≤Week 4
61 Participants
60 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: >Week 4 and ≤Week 6
61 Participants
61 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: >Week 6 and ≤Week 8
61 Participants
58 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: >Week 8 and ≤Week 10
58 Participants
58 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.3-<4.7mEq/L: > Week 10 and ≤ Week 12
61 Participants
61 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1 mEq/L: ≤Week 1
75 Participants
66 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1mEq/L: >Week 1 and ≤Week 2
74 Participants
65 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1mEq/L: >Week 2 and ≤Week 3
74 Participants
65 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1mEq/L: >Week 3 and ≤Week 4
74 Participants
61 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1 mEq/L: >Week 4 and ≤Week 6
79 Participants
64 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1mEq/L: >Week 6 and ≤Week 8
74 Participants
66 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1mEq/L: >Week 8 and ≤Week 10
72 Participants
66 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
BCSP 4.7-<5.1mEq/L: >Week 10 and ≤Week 12
80 Participants
65 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : ≤Week 1
135 Participants
128 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : > Week 1 and ≤Week 2
131 Participants
122 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : >Week 2 and ≤Week 3
133 Participants
128 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : >Week 3 and ≤Week 4
135 Participants
121 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : >Week 4 and ≤Week 6
140 Participants
125 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : >Week 6 and ≤Week 8
135 Participants
124 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : >Week 8 and ≤Week 10
130 Participants
124 Participants
Participants With Central Serum Potassium <5.5 mEq/L Over Time
Overall : >Week 10 and ≤Week 12
141 Participants
126 Participants

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to Week 12

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo. Reported results only include the number of participants having spironolactone titrations over time according to the classification defined below.

The titration was performed according to the following criteria: Spironolactone was increased in cases of hypertension, decreased or stopped in cases of hypotension and maintained if the blood pressure results were adequate The symbols \> and ≤ included in the row titles are used to indicate the time interval \["\>Week1 and ≤Week2" meaning from day 8 until day 14 (included)\].

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=147 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Participants Having Spironolactone Titrations Over Time
Up : ≤Week 1
0 Participants
0 Participants
Participants Having Spironolactone Titrations Over Time
Up : >Week 1 and ≤Week 2
0 Participants
0 Participants
Participants Having Spironolactone Titrations Over Time
Up : >Week 2 and ≤Week 3
88 Participants
77 Participants
Participants Having Spironolactone Titrations Over Time
Up : >Week 3 and ≤Week 4
27 Participants
21 Participants
Participants Having Spironolactone Titrations Over Time
Up : >Week 4 and ≤Week 6
10 Participants
11 Participants
Participants Having Spironolactone Titrations Over Time
Up : >Week 6 and ≤Week 8
6 Participants
6 Participants
Participants Having Spironolactone Titrations Over Time
Up : >Week 8 and ≤Week 10
6 Participants
7 Participants
Participants Having Spironolactone Titrations Over Time
Up : >Week 10 and ≤Week 12
1 Participants
0 Participants
Participants Having Spironolactone Titrations Over Time
Down : ≤Week 1
1 Participants
2 Participants
Participants Having Spironolactone Titrations Over Time
Down : >Week 1 and ≤Week 2
2 Participants
0 Participants
Participants Having Spironolactone Titrations Over Time
Down : >Week 2 and ≤Week 3
2 Participants
2 Participants
Participants Having Spironolactone Titrations Over Time
Down : >Week 3 and ≤Week 4
6 Participants
5 Participants
Participants Having Spironolactone Titrations Over Time
Down : >Week 4 and ≤Week 6
8 Participants
7 Participants
Participants Having Spironolactone Titrations Over Time
Down : >Week 6 and ≤Week 8
5 Participants
8 Participants
Participants Having Spironolactone Titrations Over Time
Down : >Week 8 and ≤Week 10
4 Participants
7 Participants
Participants Having Spironolactone Titrations Over Time
Down : >Week 10 and ≤Week 12
3 Participants
1 Participants

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to Week 10

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo.

QD: Once daily QOD: Once every other day

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=147 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Baseline
0 Participants
0 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Week 1
0 Participants
0 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Week 2
0 Participants
0 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Week 3
86 Participants
76 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Week 4
105 Participants
94 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Week 6
106 Participants
96 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Week 8
106 Participants
85 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
50 mg QD : Week 10
106 Participants
80 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Baseline
147 Participants
148 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Week 1
145 Participants
144 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Week 2
140 Participants
142 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Week 3
49 Participants
57 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Week 4
27 Participants
34 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Week 6
25 Participants
28 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Week 8
26 Participants
24 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QD : Week 10
19 Participants
20 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Baseline
0 Participants
0 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Week 1
1 Participants
2 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Week 2
3 Participants
1 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Week 3
3 Participants
2 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Week 4
3 Participants
3 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Week 6
2 Participants
2 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Week 8
1 Participants
4 Participants
Number of Participants by Spironolactone Dose Prescribed at Each Visit
25 mg QOD : Week 10
2 Participants
4 Participants

OTHER_PRE_SPECIFIED outcome

Timeframe: From Baseline to End of Treatment, up to 12 weeks.

Population: Safety Population

The end of treatment value is defined as the last non-missing value on or prior to the last spironolactone dose date (from End of Treatment - Case report form) + 3 days LLN=Lower limit of the normal range. ULN=Upper limit of the normal range. EoT=End of Treatment

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=146 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=147 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value <LLN : EoT Value<LLN
9 participants
4 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value <LLN : EoT Value Normal
3 participants
8 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value <LLN : EoT Value >ULN
0 participants
0 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value Normal : EoT Value <LLN
12 participants
7 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium- Baseline Value Normal: EoT Value Normal
103 participants
109 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value Normal : EoT Value >ULN
6 participants
10 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value >ULN : EoT Value <LLN
0 participants
0 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value >ULN : EoT Value Normal
10 participants
6 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Magnesium - Baseline Value >ULN : EoT Value >ULN
3 participants
3 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value <LLN : EoT Value <LLN
0 participants
1 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value <LLN : EoT Value Normal
1 participants
3 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value <LLN : EoT Value >ULN
0 participants
0 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value Normal : EoT Value <LLN
0 participants
1 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate- Baseline Value Normal: EoT Value Normal
136 participants
125 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value Normal : EoT Value >ULN
2 participants
8 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value >ULN : EoT Value <LLN
0 participants
0 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value >ULN : EoT Value Normal
5 participants
4 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Phosphate - Baseline Value >ULN : EoT Value >ULN
2 participants
5 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value <LLN : EoT Value <LLN
2 participants
4 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value <LLN : EoT Value Normal
5 participants
1 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value <LLN : EoT Value >ULN
0 participants
0 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value Normal : EoT Value <LLN
4 participants
6 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value Normal : EoT Value Normal
133 participants
133 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value Normal : EoT Value >ULN
0 participants
0 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value >ULN : EoT Value <LLN
0 participants
0 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value >ULN : EoT Value Normal
2 participants
1 participants
Shifts in Selected Laboratory Tests From Baseline to End of Treatment
Calcium - Baseline Value >ULN : EoT Value >ULN
0 participants
2 participants

OTHER_PRE_SPECIFIED outcome

Timeframe: 12 Weeks of Study Treatment

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo.

Row title: Participants not completing 12W of study treatment: Participants who had not completed 12 weeks of study treatment.

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=147 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Spironolactone Dose Level at End of 12 Weeks of Study Treatment
Participants not completing 12W of study treatment
21 Participants
50 Participants
Spironolactone Dose Level at End of 12 Weeks of Study Treatment
50 mg QD
102 Participants
76 Participants
Spironolactone Dose Level at End of 12 Weeks of Study Treatment
25 mg QD
22 Participants
19 Participants
Spironolactone Dose Level at End of 12 Weeks of Study Treatment
25 mg QOD
2 Participants
3 Participants

POST_HOC outcome

Timeframe: From baseline to Week 12/Early Termination visit

Population: Intent-to-Treat population (ITT): The ITT population included all participants who were randomized and who took at least 1 dose of spironolactone and at least 1 dose of patiromer/placebo.

Row Titles: * AM: Antihypertensive Medication(s) * New AM: Participants who required additional new antihypertensive medication(s) * Increases to baseline AM: Participants who required increases to baseline antihypertensive medication(s) * Addition new (or increase) AM: Participants who required addition of new antihypertensive medication(s) and/or increases to baseline antihypertensive medications * At any time during the study: During study * While on study medication: On medication

Outcome measures

Outcome measures
Measure
Group 1 - Patiromer
n=147 Participants
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 Participants
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Number of Participants Requiring Additional New Antihypertensive Medications or Increases to Baseline Antihypertensive Medications
New AM : At any time during the study
0 participants
3 participants
Number of Participants Requiring Additional New Antihypertensive Medications or Increases to Baseline Antihypertensive Medications
New AM : On medication
0 participants
1 participants
Number of Participants Requiring Additional New Antihypertensive Medications or Increases to Baseline Antihypertensive Medications
Increases to baseline AM: During study
0 participants
2 participants
Number of Participants Requiring Additional New Antihypertensive Medications or Increases to Baseline Antihypertensive Medications
Increases to baseline AM: On medication
0 participants
1 participants
Number of Participants Requiring Additional New Antihypertensive Medications or Increases to Baseline Antihypertensive Medications
Addition new (or increases) AM: During study
0 participants
4 participants
Number of Participants Requiring Additional New Antihypertensive Medications or Increases to Baseline Antihypertensive Medications
Addition new (or increases) AM : On medication
0 participants
2 participants

Adverse Events

Group 1 - Patiromer

Serious events: 1 serious events
Other events: 47 other events
Deaths: 0 deaths

Group 2 - Placebo

Serious events: 4 serious events
Other events: 48 other events
Deaths: 1 deaths

Serious adverse events

Serious adverse events
Measure
Group 1 - Patiromer
n=147 participants at risk
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 participants at risk
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Renal and urinary disorders
Renal failure
0.00%
0/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
0.68%
1/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Renal and urinary disorders
Renal colic
0.00%
0/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
0.68%
1/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Vascular disorders
Aortic rupture
0.00%
0/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
0.68%
1/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Musculoskeletal and connective tissue disorders
Humerus fracture
0.68%
1/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
0.00%
0/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Immune system disorders
Hypersensitivity
0.00%
0/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
0.68%
1/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).

Other adverse events

Other adverse events
Measure
Group 1 - Patiromer
n=147 participants at risk
Spironolactone + blinded patiromer Patiromer: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Group 2 - Placebo
n=148 participants at risk
Spironolactone + blinded placebo Placebo: 2 packets/day starting dose, administered orally Spironolactone: 25 mg tablet/day starting dose, administered orally
Gastrointestinal disorders
Diarrhoea
6.1%
9/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
5.4%
8/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Renal and urinary disorders
Renal impairment
8.8%
13/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
6.8%
10/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Metabolism and nutrition disorders
Hyperkalaemia
4.8%
7/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
8.8%
13/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Nervous system disorders
Headache
6.1%
9/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
7.4%
11/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
Vascular disorders
Hypotension
6.1%
9/147 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).
4.1%
6/148 • During Treatment Period (12 weeks); until Follow-up Visit 2 weeks after the Week 12 Visit (or Early Termination Visit).

Additional Information

Clinical Support & Regulatory Intelligence, Regulatory Affairs Director

Vifor Pharma Inc.

Phone: +1 250 708 4296

Results disclosure agreements

  • Principal investigator is a sponsor employee 1. No Confidential Information will be disclosed, excluding CT results from Institution 2. No publication shall be initiated by PI until: * 18 months after the conclusion of the Study, defined as the locking of the clinical database * the publication of a Multicenter Publication (publication of results from all participating sites) * written notice from Sponsor that no Multicenter Publication shall ensue 3. PI shall provide a draft of proposed publication for review at least 60 days in advance
  • Publication restrictions are in place

Restriction type: OTHER