Trial Outcomes & Findings for A Study to Evaluate the Safety and Efficacy of RDX5791 for the Treatment of Constipation Predominant Irritable Bowel Syndrome (IBS-C) (NCT NCT01340053)

NCT ID: NCT01340053

Last Updated: 2019-10-15

Results Overview

Patients complete a phone diary daily. They are asked "how many bowel movements have you had today?" they are then asked for each spontaneous bowel movement (unaided with laxative use) wether there was its was a complete evacuation. if it was then it is a complete spontaneous bowel movement. All CSBMs are added and adjusted for a mean compete sponteneous bowel movement.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

186 participants

Primary outcome timeframe

Baseline and Week 4

Results posted on

2019-10-15

Participant Flow

Participant milestones

Participant milestones
Measure
Placebo
Placebo: Capsule, QD
10mg
RDX5791: Capsule, QD
30 mg
RDX5791: Capsule, QD
100 mg
RDX5791: Capsule, QD
Overall Study
STARTED
47
46
47
46
Overall Study
COMPLETED
43
44
43
43
Overall Study
NOT COMPLETED
4
2
4
3

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

A Study to Evaluate the Safety and Efficacy of RDX5791 for the Treatment of Constipation Predominant Irritable Bowel Syndrome (IBS-C)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Placebo
n=47 Participants
RDX5791: Capsule, QD
Low Dose
n=46 Participants
RDX5791: Capsule, QD
Mid Dose
n=47 Participants
RDX5791: Capsule, QD
High Dose
n=46 Participants
RDX5791: Capsule, QD
Total
n=186 Participants
Total of all reporting groups
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
Body Mass Index (BMI)
28.02 kg/m^2
STANDARD_DEVIATION 5.56 • n=5 Participants
27.40 kg/m^2
STANDARD_DEVIATION 6.97 • n=7 Participants
28.58 kg/m^2
STANDARD_DEVIATION 6.10 • n=5 Participants
28.10 kg/m^2
STANDARD_DEVIATION 4.14 • n=4 Participants
28.03 kg/m^2
STANDARD_DEVIATION 5.74 • n=21 Participants
Age, Continuous
47.9 years
STANDARD_DEVIATION 11.97 • n=5 Participants
44.4 years
STANDARD_DEVIATION 14.15 • n=7 Participants
46.5 years
STANDARD_DEVIATION 9.49 • n=5 Participants
43.5 years
STANDARD_DEVIATION 12.31 • n=4 Participants
45.6 years
STANDARD_DEVIATION 12.11 • n=21 Participants
Sex: Female, Male
Female
39 Participants
n=5 Participants
42 Participants
n=7 Participants
39 Participants
n=5 Participants
37 Participants
n=4 Participants
157 Participants
n=21 Participants
Sex: Female, Male
Male
8 Participants
n=5 Participants
4 Participants
n=7 Participants
8 Participants
n=5 Participants
9 Participants
n=4 Participants
29 Participants
n=21 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
n=5 Participants
6 Participants
n=7 Participants
5 Participants
n=5 Participants
8 Participants
n=4 Participants
22 Participants
n=21 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
44 Participants
n=5 Participants
40 Participants
n=7 Participants
42 Participants
n=5 Participants
38 Participants
n=4 Participants
164 Participants
n=21 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
Race (NIH/OMB)
Asian
1 Participants
n=5 Participants
2 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
3 Participants
n=21 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
0 Participants
n=4 Participants
0 Participants
n=21 Participants
Race (NIH/OMB)
Black or African American
12 Participants
n=5 Participants
5 Participants
n=7 Participants
9 Participants
n=5 Participants
10 Participants
n=4 Participants
36 Participants
n=21 Participants
Race (NIH/OMB)
White
34 Participants
n=5 Participants
39 Participants
n=7 Participants
38 Participants
n=5 Participants
36 Participants
n=4 Participants
147 Participants
n=21 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants

PRIMARY outcome

Timeframe: Baseline and Week 4

Population: All patients randomized who received at least one dose of drug

Patients complete a phone diary daily. They are asked "how many bowel movements have you had today?" they are then asked for each spontaneous bowel movement (unaided with laxative use) wether there was its was a complete evacuation. if it was then it is a complete spontaneous bowel movement. All CSBMs are added and adjusted for a mean compete sponteneous bowel movement.

Outcome measures

Outcome measures
Measure
Placebo
n=47 Participants
RDX5791: Capsule, QD
Low Dose
n=45 Participants
RDX5791: Capsule, QD
Mid Dose
n=47 Participants
RDX5791: Capsule, QD
High Dose
n=46 Participants
RDX5791: Capsule, QD
Complete Spontaneous Bowel Movement (CSBM) Frequency Change From Baseline
1.01 number of bowel movements/week
Standard Deviation 2.03
1.50 number of bowel movements/week
Standard Deviation 2.09
1.54 number of bowel movements/week
Standard Deviation 2.10
1.57 number of bowel movements/week
Standard Deviation 2.50

SECONDARY outcome

Timeframe: baseline and week 4

Outcome measures

Outcome measures
Measure
Placebo
n=47 Participants
RDX5791: Capsule, QD
Low Dose
n=45 Participants
RDX5791: Capsule, QD
Mid Dose
n=47 Participants
RDX5791: Capsule, QD
High Dose
n=46 Participants
RDX5791: Capsule, QD
Spontaneous Bowel Movement (SBM) Frequency Change From Baseline
1.58 change in number of bowel movements
Standard Deviation 2.51
2.37 change in number of bowel movements
Standard Deviation 2.27
2.97 change in number of bowel movements
Standard Deviation 3.13
2.81 change in number of bowel movements
Standard Deviation 3.14

Adverse Events

Placebo

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

Low Dose

Serious events: 2 serious events
Other events: 0 other events
Deaths: 0 deaths

Mid Dose

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

High Dose

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

Serious adverse events

Serious adverse events
Measure
Placebo
n=47 participants at risk
RDX5791: Capsule, QD
Low Dose
n=46 participants at risk
RDX5791: Capsule, QD
Mid Dose
n=47 participants at risk
RDX5791: Capsule, QD
High Dose
n=46 participants at risk
RDX5791: Capsule, QD
Gastrointestinal disorders
cholecystitis
0.00%
0/47
2.2%
1/46 • Number of events 1
0.00%
0/47
0.00%
0/46
Gastrointestinal disorders
appendicitis
0.00%
0/47
2.2%
1/46 • Number of events 1
0.00%
0/47
0.00%
0/46

Other adverse events

Adverse event data not reported

Additional Information

Chief Development Officer

Ardelyx

Phone: 510 745 1752

Results disclosure agreements

  • Principal investigator is a sponsor employee Publications must be reviewed and approved by sponsor
  • Publication restrictions are in place

Restriction type: OTHER