Trial of Linaclotide in Patients With Irritable Bowel Syndrome With Constipation (IBS-C)

This study has been completed.
Sponsor:
Collaborator:
Forest Laboratories
Information provided by (Responsible Party):
Ironwood Pharmaceuticals, Inc.
ClinicalTrials.gov Identifier:
NCT00938717
First received: July 12, 2009
Last updated: October 9, 2013
Last verified: October 2013

July 12, 2009
October 9, 2013
July 2009
September 2010   (final data collection date for primary outcome measure)
  • Abdominal Pain and Complete Spontaneous Bowel Movement (APC) Responder, 9 Out of 12 Weeks [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]

    A patient is considered to be a 9 out of 12 week APC responder if, for at least 9 out of the first 12 weeks of the treatment period, the patient had at least 3 CSBMs, had an increase of at least 1 CSBM from baseline, and had a decrease of at least 30 percent in their Abdominal Pain (AP) score from baseline during a particular week.

    The AP score assesses patient's worst AP in the past 24 hours using an 11-point scale (from 0-10), where 0 represents no AP and 10 represents very severe AP.

    SBM is defined as a bowel movement that occurs in the absence of laxative, enema, or suppository use on either the calendar day of the bowel movement or the calendar day before the bowel movement. CSBM is defined as an SBM associated with a sense of complete evacuation.

  • Complete Spontaneous Bowel Movement (CSBM) 3+1 Responder, 9 Out of 12 Weeks [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]

    A patient is considered to be a CSBM 3+1 responder if, for at least 9 out of the 12 weeks of the treatment period, the patient had at least 3 CSBMs and experienced an increase of at least 1 CSBM from baseline during a particular week.

    A CSBM was defined as a Spontaneous Bowel Movement (SBM) that was associated with a sense of complete evacuation.

    An SBM was defined as a bowel movement (BM) that occurred in the absence of laxative, enema, or suppository use on either the calendar day of the BM or the calendar day before the BM.

  • Abdominal Pain Responder, 9 Out of 12 Weeks [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]

    A patient is considered to be an abdominal pain responder if, for at least 9 out of the 12 weeks of the treatment period, they experienced a decrease of at least 30 percent in the mean abdominal pain score from baseline during a particular week.

    The Abdominal Pain score assesses patient's worst abdominal pain in the past 24 hours using an 11-point scale (from 0-10), where 0 represents no abdominal pain and 10 represents very severe abdominal pain.

  • Abdominal Pain and Complete Spontaneous Bowel Movement (APC) Responder, 6 Out of 12 Weeks [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]

    A patient is considered to be a 6 out of 12 week APC responder if, for at least 6 out of the first 12 weeks of the treatment period, the patient had an increase of at least 1 CSBM from baseline, and had a decrease of at least 30 percent in their Abdominal Pain (AP) score from baseline during a particular week.

    The AP score assesses patient's worst AP in the past 24 hours using an 11-point scale (from 0-10), where 0 represents no AP and 10 represents very severe AP.

    SBM is defined as a bowel movement that occurs in the absence of laxative, enema, or suppository use on either the calendar day of the bowel movement or the calendar day before the bowel movement. CSBM is defined as an SBM associated with a sense of complete evacuation.

  • Abdominal Pain and Complete Spontaneous Bowel Movement (CSBM) Responder [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • CSBM Responder [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • Abdominal Pain Responder [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
Complete list of historical versions of study NCT00938717 on ClinicalTrials.gov Archive Site
  • 12-Week Complete Spontaneous Bowel Movement (CSBM) Frequency [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    The change from baseline in 12-week CSBM frequency (i.e., weekly CSBM frequency over the first 12 weeks of the Treatment Period).
  • 12-Week Spontaneous Bowl Movement (SBM) Frequency [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    The change from baseline in 12-week SBM frequency (i.e., weekly SBM frequency over the first 12 weeks of the Treatment Period).
  • 12-Week Change in Stool Consistency [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]

    The consistency of each BM was assessed by patients using the 7-point Bristol Stool Form Scale (BSFS) from 1 to 7.

    1. = separate hard lumps like nuts [difficult to pass]
    2. = sausage shaped but lumpy
    3. = like a sausage but with cracks on surface
    4. = like a sausage or snake, smooth and soft
    5. = soft blobs with clear-cut edges [passed easily]
    6. = fluffy pieces with ragged edges, a mushy stool
    7. = watery, no solid pieces [entirely liquid]).
  • 12-Week Change in Severity of Straining [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    Straining is measured on a 5-point scale where a value of 1 is "not at all" and a value of 5 is "an extreme amount".
  • 12-Week Change in Abdominal Pain Score [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    Abdominal Pain at its worst (in the last 24 hours) is based on an 11-point scale where 0 represents no abdominal pain and 10 represents very severe abdominal pain.
  • 12-Week Change in Abdominal Discomfort [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    Abdominal discomfort was assessed on an 11-point scale where a value of 0 is "none" and a value of 10 is "very severe".
  • 12-Week Change in Bloating [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    Bloating was assessed on an 11-point scale where a value of 0 is "none" and a value of 10 is "very severe".
  • Complete Spontaneous Bowl Movement (CSBM) Responder for 6 Weeks Out of 12 Weeks of Treatment [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    A patient is considered to be a CSBM responder if, for at least 6 out of the 12 weeks of the treatment period, an increase of at least 1 CSBM per week from baseline was experienced.
  • Abdominal Pain Responder for 6 Out of 12 Weeks [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]
    A patient is considered to be an AP responder if, for at least 6 out of the first 12 weeks of the treatment period, the patient had a decrease of at least 30 percent in their Abdominal Pain score from baseline during a particular week.
  • 12-Week Percent of Abdominal Pain-free Days [ Time Frame: Change from Baseline to Week 12 ] [ Designated as safety issue: No ]

    Abdominal pain free (APF) days are those days where the patient reported a score of '0' for abdominal pain at its worst.

    Abdominal Pain at its worst (in the last 24 hours) is based on an 11-point scale where 0 represents no abdominal pain and 10 represents very severe abdominal pain.

  • CSBM Frequency [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • SBM Frequency [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • Stool Consistency [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • Severity of Straining [ Time Frame: Measured Weekly over 12 Weeks ] [ Designated as safety issue: No ]
  • Abdominal Pain [ Time Frame: Measured Weekly Over 12 Weeks ] [ Designated as safety issue: No ]
  • Abdominal Pain-free Days [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • Abdominal Discomfort [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • Bloating [ Time Frame: Measured Weekly for 12 Weeks ] [ Designated as safety issue: No ]
  • Adverse Events, ECGs, Vital Signs, and Clinical Labs [ Time Frame: Measured Throughought the Duration of the Trial (26 Weeks) ] [ Designated as safety issue: Yes ]
Not Provided
Not Provided
 
Trial of Linaclotide in Patients With Irritable Bowel Syndrome With Constipation (IBS-C)
A Phase 3, Randomized, Double-blind, Placebo-controlled, Parallel-group Trial of Linaclotide Administered Orally for 26 Weeks in Patients With Irritable Bowel Syndrome With Constipation

The purpose of this study is to determine the safety and efficacy of linaclotide administered to patients with Irritable Bowel Syndrome with Constipation (IBS-C).

Not Provided
Interventional
Phase 3
Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Irritable Bowel Syndrome With Constipation
Drug: Linaclotide or Matching Placebo
Linaclotide or Matching Placebo, administered orally, once daily, for the duration of the trial
  • Placebo Comparator: Placebo
    Intervention: Drug: Linaclotide or Matching Placebo
  • Experimental: 290 μg Linaclotide
    Intervention: Drug: Linaclotide or Matching Placebo

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
805
September 2010
September 2010   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Patient has completed a colonoscopy according to the AGA criteria, with no clinically significant findings
  • Patient has successfully completed protocol procedures (with no clinically significant findings): physical exam, 12-lead ECG, or clinical laboratory tests
  • Patient meets protocol criteria for diagnosis of IBS-C
  • Patient demonstrates continued IBS-C through Pretreatment Period
  • Patient is compliant with IVRS

Exclusion Criteria:

  • Patient has history of loose or watery stools
  • Patient has symptoms of or been diagnosed with a medical condition that may contribute to abdominal pain
  • Patient has a structural abnormality of the gastrointestinal (GI) tract or a disease or condition that can affect GI motility
  • Patient has any protocol-excluded or clinically significant medical or surgical history that could confound the study assessments
Both
18 Years and older
No
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT00938717
MCP-103-302
Not Provided
Ironwood Pharmaceuticals, Inc.
Ironwood Pharmaceuticals, Inc.
Forest Laboratories
Study Chair: Jeffrey M. Johnston, MD, FACP Ironwood Pharmaceuticals, Inc.
Ironwood Pharmaceuticals, Inc.
October 2013

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP