Title

Study of Elobixibat (A3309) in Patients With Chronic Idiopathic Constipation
A Phase IIb, Double-blind, Randomised, Placebo-controlled, Multi-centre, Dose-finding Efficacy and Safety Study of a Range of Doses of Elobixibat in Patients With Chronic Idiopathic Constipation
  • Phase

    Phase 2
  • Study Type

    Interventional
  • Study Participants

    190
The purpose of this trial is to determine the efficacy and safety of A3309 administered to patients with chronic idiopathic constipation.
Study Started
Nov 30
2009
Primary Completion
Oct 31
2010
Study Completion
Oct 31
2010
Results Posted
Mar 22
2017
Last Update
Mar 22
2017

Drug A3309

A3309 in three different dosage levels or placebo once daily for the duration of the study

A3309 low dose Experimental

Administered once daily for the duration of the study

A3309 intermediate dose Experimental

Administered once daily for the duration of the study.

A3309 high dose Experimental

Administered once daily for the duration of the study

Placebo Placebo Comparator

Administered once daily for the duration of the study

Criteria

Inclusion Criteria:

Patient meets protocol specified criteria for constipation
Patient has successfully completed study requirements with no clinically relevant findings for physical exam, ECG, laboratory tests and colonoscopy as applicable

Exclusion Criteria:

Medical history or medical condition that would not make the patient a good candidate for the study or limit the patient´s ability to complete the study
Patient reports loose stools
Patient has IBS with pain/discomfort as predominant symptom
Patient needs medications prohibited as specified in the protocol

Summary

Elobixibat (A3309) 5 mg

Elobixibat (A3309) 10 mg

Elobixibat (A3309) 15 mg

Placebo

All Events

Event Type Organ System Event Term Elobixibat (A3309) 5 mg Elobixibat (A3309) 10 mg Elobixibat (A3309) 15 mg Placebo

Change From Baseline in Frequency of Spontaneous Bowel Movements

Primary ep W 1

Elobixibat (A3309) 5 mg

2.5
Number of SBMs (Least Squares Mean)
Standard Error: 0.7

Elobixibat (A3309) 10 mg

4.0
Number of SBMs (Least Squares Mean)
Standard Error: 0.7

Elobixibat (A3309) 15 mg

5.4
Number of SBMs (Least Squares Mean)
Standard Error: 0.71

Placebo

1.7
Number of SBMs (Least Squares Mean)
Standard Error: 0.7

Responder Analyses for Complete Spontaneous Bowel Movements (CSBMs)

A CSBM responder is defined as per FDA draft guidance for IBS-C: An increase of one or more of CSBMs per week over baseline for at least 4 out of the 8 weeks of treatment

Elobixibat (A3309) 5 mg

25.0
participants

Elobixibat (A3309) 10 mg

27.0
participants

Elobixibat (A3309) 15 mg

30.0
participants

Placebo

14.0
participants

Time to First Bowel Movement

Elobixibat (A3309) 5 mg

23.0
hours (Median)
95% Confidence Interval: 17.0 to 29.0

Elobixibat (A3309) 10 mg

12.0
hours (Median)
95% Confidence Interval: 7.0 to 23.0

Elobixibat (A3309) 15 mg

7.0
hours (Median)
95% Confidence Interval: 5.0 to 20.0

Placebo

27.0
hours (Median)
95% Confidence Interval: 20.0 to 44.0

Stool Consistency Change From Baseline

Bristol Stool Form Scale. Min value:1. Max value: 7. Higher value indicates more liquid shape than normal, lower indicates constipated state.

Elobixibat (A3309) 5 mg

0.91
units on a scale (1-7) (Least Squares Mean)
Standard Deviation: 0.99

Elobixibat (A3309) 10 mg

1.52
units on a scale (1-7) (Least Squares Mean)
Standard Deviation: 1.2

Elobixibat (A3309) 15 mg

1.91
units on a scale (1-7) (Least Squares Mean)
Standard Deviation: 1.3

Placebo

0.66
units on a scale (1-7) (Least Squares Mean)
Standard Deviation: 1.0

LDL/HDL Ratio

Ratio of plasma LDL cholesterol and HDL cholesterol Difference from baseline, placebo-adjusted

Elobixibat (A3309) 5 mg

-0.1
Ratio (Least Squares Mean)
Standard Error: 0.08

Eobixibat (A3309) 10 mg

-0.27
Ratio (Least Squares Mean)
Standard Error: 0.09

Elobixibat (A3309) 15 mg

-0.21
Ratio (Least Squares Mean)
Standard Error: 0.1

Straining Change From Baseline

Daily assessment of straining. Min value: 1. Max value: 5. Higher value indicates more straining.

Elobixibat (A3309) 5 mg

-0.84
units on a scale (1-5) (Least Squares Mean)
Standard Error: 0.1

Elobixibat (A3309) 10 mg

-1.13
units on a scale (1-5) (Least Squares Mean)
Standard Error: 0.1

Elobixibat (A3309) 15 mg

-1.15
units on a scale (1-5) (Least Squares Mean)
Standard Error: 0.1

Placebo

-0.64
units on a scale (1-5) (Least Squares Mean)
Standard Error: 0.1

Total

190
Participants

Age, Continuous

48
years (Mean)
Standard Deviation: 12

Age, Categorical

Region of Enrollment

Sex: Female, Male

Overall Study

Elobixibat (A3309) 5 mg

Elobixibat (A3309) 10 mg

Elobixibat (A3309) 15 mg

Placebo

Drop/Withdrawal Reasons

Elobixibat (A3309) 5 mg

Elobixibat (A3309) 10 mg

Elobixibat (A3309) 15 mg

Placebo