Irritable Bowel Syndrome Characterized by ConstipationPhase 3IBS-CNCT02493452
Second Plecanatide Study In Irritable Bowel Syndrome With Constipation (IBS-C)
A Phase 3 study testing Plecanatide in people with Irritable Bowel Syndrome Characterized by Constipation, run by Bausch Health Americas, Inc. at 191 sites in United States.
Trial summary
This study in patients with IBS-C is a randomized, double-blind, placebo-controlled, parallel-group clinical trial with 12 weeks of study drug therapy. Read more about this study
- Who is it for?
- Ages 18 to 85 years
- Conditions the study is for
- Irritable Bowel Syndrome Characterized by Constipation
- What is being tested?
- Plecanatide
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 1,135 participants
- Where
- 191 sitesUnited States
- Study dates
- Jun 2015to Feb 2017
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 85 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult patients between the ages of 18 and 85 years (inclusive) with a diagnosis of IBS based on ROME III diagnostic criteria and meeting criteria for diagnosis of the constipation predominant subtype - IBS-C
Who cannot join
- Refusal or inability to sign informed consent for the trial
- Refusal or inability to complete daily Episodic (real-time) BM / RM calls, End of Day daily Calls, and/or complete electronic questionnaires
- BMI ≥ 40 or < 18
- Women of child bearing potential who refuse to use an acceptable method of birth control for the duration of the trial
- Women who are pregnant or lactating
- Diagnosis of IBS-D or IBS-M
Show all 12Show fewer
- Organic or obstructive disease of the small or large intestine
- Use of laxatives other than the study-supplied rescue medication (Dulcolax®, bisacodyl)
- Use of a prohibited concomitant medication within the time frame prior to screening outlined in the study protocol for that medication
- Unstable medical illness
- Bilirubin > 3X ULN in the absence of a conjugation defect
- Any laboratory value > 3X ULN unless discussed and approved by the study Medical Monitor
Trial locations and contacts
191 sites in 1 country.
191 sites in 1 country
United States191 sites
Synergy Research Site
Albuquerque, New Mexico, 87109
Synergy Research Site
Anderson, South Carolina, 29621
Synergy Research Site
Annapolis, Maryland, 21401
Synergy Research Site
Atlanta, Georgia, 30322
Synergy Research Site
Atlanta, Georgia, 30342
Synergy Research Site
Atlantis, Florida, 33462
Synergy Research Site
Austin, Texas, 78731
Synergy Research Site
Austin, Texas, 78758
Synergy Research Site
Baytown, Texas, 77521
Synergy Research Site
Beaumont, Texas, 77701
Synergy Research Site
Birmingham, Alabama, 35209
Synergy Research Site
Birmingham, Alabama, 35216
Synergy Research Site
Blackfoot, Idaho, 83221
Synergy Research Site
Blackwood, New Jersey, 08012
Synergy Research Site
Blue Island, Illinois, 60406
Synergy Research Site
Boca Raton, Florida, 33428
Synergy Research Site
Boise, Idaho, 83709
Synergy Research Site
Bradenton, Florida, 34201
Synergy Research Site
Brandon, Florida, 33511
Synergy Research Site
Brooksville, Florida, 34601
Synergy Research Site
Brownsburg, Indiana, 46112
Synergy Research Site
Canoga Park, California, 91303
Synergy Research Site
Carmichael, California, 95608
Synergy Research Site
Catonsville, Maryland, 21228
Synergy Research Site
Channelview, Texas, 77530
Synergy Research Site
Chapel Hill, North Carolina, 27514
Synergy Research Site
Chesapeake, Virginia, 23320
Synergy Research Site
Chesterfield, Missouri, 63005
Synergy Research Site
Chicago, Illinois, 60602
Synergy Research Site
Chino, California, 91710
Synergy Research Site
Chula Vista, California, 91910
Synergy Research Site
Cincinnati, Ohio, 45224
Synergy Research Site
Cincinnati, Ohio, 45242
Synergy Research Site
Cincinnati, Ohio, 45249
Synergy Research Site
Clearwater, Florida, 33756
Synergy Research Site
Colorado Springs, Colorado, 80920
Synergy Research Site
Columbus, Ohio, 43214
Synergy Research Site
Conway, Arkansas, 72034
Synergy Research Site
Cutler Bay, Florida, 33189
Synergy Research Site
Dallas, Texas, 75224
Synergy Research Site
Dallas, Texas, 75231
Synergy Research Site
Dallas, Texas, 75254
Synergy Research Site
Dayton, Ohio, 45419
Synergy Research Site
Dayton, Ohio, 45439
Synergy Research Site
Decatur, Georgia, 30033
Synergy Research Site
Denver, Colorado, 80246
Synergy Research Site
Doylestown, Pennsylvania, 18901
Synergy Research Site
Egg Harbor, New Jersey, 08234
Synergy Research Site
El Cajon, California, 92020
Synergy Research Site
Encino, California, 91436
Synergy Research Site
Evanston, Illinois, 60201
Synergy Research Site
Fairfax, Virginia, 22031
Synergy Research Site
Fayetteville, North Carolina, 28304
Synergy Research Site
Fayetteville, Tennessee, 37334
Synergy Research Site
Foothill Ranch, California, 92610
Synergy Research Site
Fort Lauderdale, Florida, 33306
Synergy Research Site
Fort Lauderdale, Florida, 33312
Synergy Research Site
Franklin, Ohio, 45005
Synergy Research Site
Franklin, Tennessee, 37067
Synergy Research Site
Garden Grove, California, 92844
Synergy Research Site
Glendale, Arizona, 85301
Synergy Research Site
Greer, South Carolina, 29651
Synergy Research Site
Guntersville, Alabama, 35976
Synergy Research Site
Hamden, Connecticut, 06517
Synergy Research Site
Hermitage, Tennessee, 37076
Synergy Research Site
Hialeah, Florida, 33012
Synergy Research Site
Hialeah, Florida, 33013
Synergy Research Site
Hialeah, Florida, 33016
Synergy Research Site
High Point, North Carolina, 27262
Synergy Research Site
Hoffman Estates, Illinois, 60169
Synergy Research Site
Hopewell Junction, New York, 12533
Synergy Research Site
Houston, Texas, 77008
Synergy Research Site
Houston, Texas, 77081
Synergy Research Site
Humble, Texas, 77338
Synergy Research Site
Huntington Beach, California, 92647
Synergy Research Site
Huntsville, Alabama, 35801
Synergy Research Site
Indianapolis, Indiana, 46237
Synergy Research Site
Irvine, California, 92614
Synergy Research Site
Jackson, Tennessee, 38305
Synergy Research Site.
Jacksonville, Florida, 32256
Synergy Research Site
Jacksonville, North Carolina, 28546
Synergy Research Site
Kalamazoo, Michigan, 49009
Synergy Research Site
Kettering, Ohio, 45429
Synergy Research Site
Kew Gardens, New York, 11415
Synergy Research Site
Kingsport, Tennessee, 37660
Synergy Research Site
Kingwood, West Virginia, 26537
Synergy Research Site
Knoxville, Tennessee, 37909
Synergy Research Site
La Crosse, Wisconsin, 54601
Synergy Research Site
Lampasas, Texas, 76550
Synergy Research Site
Lansdale, Pennsylvania, 19446
Synergy Research Site
Las Vegas, Nevada, 89119
Synergy Research Site
Lauderdale Lakes, Florida, 33319
Synergy Research Site
Levittown, Pennsylvania, 19056
Synergy Research Site
Lilburn, Georgia, 30047
Synergy Research Site
Little Rock, Arkansas, 72205
Synergy Research Site
Lomita, California, 90717
Synergy Research Site
Long Beach, California, 90806
Synergy Research Site
Los Angeles, California, 90045
Synergy Research Site
Madisonville, Kentucky, 42431
Synergy Research Site
Maitland, Florida, 32751
Synergy Research Site
Marietta, Georgia, 30060
Synergy Research Site
Marlborough, Massachusetts, 01752
Synergy Research Site
Marrero, Louisiana, 70072
Synergy Research Site
McKinney, Texas, 75070
Synergy Research Site
Mentor, Ohio, 44060
Synergy Research Site
Meridian, Idaho, 83646
Synergy Research Site
Miami, Florida, 33015
Synergy Research Site
Miami, Florida, 33016
Synergy Research Site
Miami, Florida, 33032
Synergy Research Site
Miami, Florida, 33122
Synergy Research Site
Miami, Florida, 33126
Synergy Research Site
Miami, Florida, 33136
Synergy Research Site
Miami, Florida, 33144
Synergy Research Site
Miami, Florida, 33155
Synergy Research Site
Miami, Florida, 33165
Synergy Research Site
Miami, Florida, 33173
Synergy Research Site
Miami, Florida, 33176
Synergy Research Site
Miami, Florida, 33183
Synergy Research Site
Miami Lakes, Florida, 33016
Synergy Research Site
Miami Lakes, Florida, 33173
Synergy Research Site
Miami Springs, Florida, 33166
Synergy Research Site
Middleburg Heights, Ohio, 44130
Synergy Research Site
Mission Hills, California, 91345
Synergy Research Site
Missoula, Montana, 59808
Synergy Research Site
Missouri City, Texas, 77459
Synergy Research Site
Montclair, California, 91763
Synergy Research Site
Morton, Illinois, 61550
Synergy Research Site
Mt. Pleasant, South Carolina, 29464
Synergy Research Site
Naples, Florida, 34102
Synergy Research Site
New York, New York, 10016
Synergy Research Site
Norfolk, Virginia, 23507
Synergy Research Site
North Miami Beach, Florida, 33162
Synergy Research Site
Northridge, California, 91324
Synergy Research Site
Norwalk, California, 90650
Synergy Research Site
Oak Lawn, Illinois, 60453
Synergy Research Site
Oceanside, California, 92056
Synergy Research Site
Oklahoma City, Oklahoma, 73104
Synergy Research Site
Omaha, Nebraska, 68114
Synergy Research Site
Orange, California, 92868
Synergy Research Site
Orange Park, Florida, 32073
Synergy Research Site
Orangevale, California, 95662
Synergy Research Site
Orem, Utah, 84058
Synergy Research Site.
Orlando, Florida, 32806
Synergy Research Site
Orlando, Florida, 32807
Synergy Research Site
Ormond Beach, Florida, 32174
Synergy Research Site
Owensboro, Kentucky, 42303
Synergy Research Site
Oxon Hill, Maryland, 20745
Synergy Research Site
Pembroke Pines, Florida, 33024
Synergy Research Site
Philadelphia, Pennsylvania, 19140
Synergy Research Site
Phoenix, Arizona, 85018
Synergy Research Site
Pinellas Park, Florida, 33782
Synergy Research Site
Placentia, California, 92870
Synergy Research Site
Plano, Texas, 75024
Synergy Research Site
Plano, Texas, 75075
Synergy Research Site
Port Arthur, Texas, 77640
Synergy Research Site
Port Gibson, Mississippi, 39150
Synergy Research Site
Port Orange, Florida, 32127
Synergy Research Site
Poughkeepsie, New York, 12601
Synergy Research Site
Quincy, Massachusetts, 02169
Synergy Research Site
Raleigh, North Carolina, 27609
Synergy Research Site
Richmond, Virginia, 23220
Synergy Research Site
Richmond, Virginia, 23235
Synergy Research Site
Riverside, California, 92501
Synergy Research Site
Salisbury, North Carolina, 28144
Synergy Research Site
San Antonio, Texas, 78209
Synergy Research Site
San Antonio, Texas, 78215
Synergy Research Site
San Antonio, Texas, 78229
Synergy Research Site
San Diego, California, 92103
Synergy Research Site
San Marino, California, 91108
Synergy Research Site
Santa Ana, California
Synergy Research Site
Saraland, Alabama, 36571
Synergy Research Site
Schaumburg, Illinois, 60194
Synergy Research Site
Sherman Oaks, California, 91403
Synergy Research Site
Snellville, Georgia, 30078
Synergy Research Site
Spokane, Washington, 99202
Synergy Research Site
St Louis, Missouri, 63128
Synergy Research Site
St Louis, Missouri, 63141
Synergy Research Site
Sugar Land, Texas, 77478
Synergy Research Site
Surprise, Arizona, 85374
Synergy Research Site
Tamarac, Florida, 33319
Synergy Research Site
Tampa, Florida, 33613
Synergy Research Site
Tampa, Florida, 33634
Synergy Research Site
Towson, Maryland, 21204
Synergy Research Site
Tucson, Arizona, 85745
Synergy Research Site
Vancouver, Washington, 98664
Synergy Research Site
Vineland, New Jersey, 08360
Synergy Research Site
Wadsworth, Ohio, 44203
Synergy Research Site
West Valley City, Utah, 84120
Synergy Research Site
Wichita, Kansas, 67203
Synergy Research Site
Williston, Florida, 32696
Synergy Research Site
Winston-Salem, North Carolina, 27103
About this study
Official title: Second Phase 3 Randomized, 12-Week, Double-Blind, Placebo-Controlled Study of the Safety and Efficacy of Plecanatide in Patients With Irritable Bowel Syndrome With Constipation (IBS-C)
This study in patients with IBS-C is a randomized, double-blind, placebo-controlled, parallel-group clinical trial with 12 weeks of study drug therapy.
Read the detailed description
This study in patients with IBS-C is a randomized, double-blind, placebo-controlled, parallel-group clinical trial with 12 weeks of study drug therapy.
Screening/Baseline: Patients will undergo an up to 28-day Screening/Baseline period to allow for any necessary diagnostic procedures, allow for required washout of medications and to determine study eligibility. If otherwise eligible based on screening criteria, patients will undergo a 2-week baseline assessment using an electronic diary where they will record daily assessments of bowel movements (BMs), stool consistency (Bristol Stool Form Scale-BSFS), abdominal pain and other IBS-related symptoms. Data from the two-week electronic diary assessment just prior to the randomization visit will be used to confirm IBS-C and study eligibility as well as define the patient's baseline from which change will be determined.
Treatment: Patients who meet all entry criteria will be randomized (1:1:1) to one of three blinded treatment groups on Day 1 of the Treatment period. Patients will take an oral dose of study drug OD for 12 weeks and continue the daily electronic diaries (BMs, rescue medication use, abdominal pain, and other symptoms). During treatment weeks 4, 8, and 12, patients will return to the clinic to undergo safety and efficacy assessments.
Post-Treatment: For 2 weeks after completing dosing, patients will continue to complete daily electronic diaries. Patients will then return to the clinical site for a final follow-up visit during Week 14 following randomization.
The planned duration of participation in this study will be at least 116 days from signing of informed consent through post-treatment or up to approximately 135 days with visit windows considered.
- Being tested
- Plecanatide, Placebo
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PlecanatideDrug
PlaceboDrug
| Study group | Role | What they receive |
|---|---|---|
| 3.0 mg plecanatide | Active comparator | Plecanatide 3.0 mg dosed daily for 12 weeks Receives: Drug: Plecanatide |
| 6.0 mg plecanatide | Active comparator | Plecanatide 6.0 mg dosed daily for 12 weeks Receives: Drug: Plecanatide |
| Matching placebo | Active comparator | Placebo dosed daily for 12 weeks Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Overall Responders - ITT Population
An Overall Responder was a patient who was a weekly responder (i.e., decrease of 30% from baseline for abdominal pain intensity and an increase of at least 1 complete spontaneous bowel movement in the same week) for at least 6 of the 12 treatment weeks.
Measured: 12 weeks
Number of Abdominal Pain Responders for at Least 6 of 12 Treatment Weeks
An Abdominal Pain Intensity Responder was a patient who had a decrease of 30 % from baseline for abdominal pain intensity. Baseline is the mean of non-missing abdominal pain scores recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.
Measured: 12 Weeks
Number of Stool Frequency Responder for at Least 6 of the 12 Treatment Weeks
A Stool Frequency Responder was a patient who experienced an increase of at least one CSBM (complete spontaneous bowel movement) per week from baseline. Baseline was the mean number of CSBMs recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.
Measured: 12 Weeks
Secondary outcomes (6)
Number of Sustained Efficacy Responders
A Sustained Efficacy Responder was a patient who was an Overall Responder who also was a Weekly Responder, i.e., decreased of 30% from baseline for abdominal pain intensity and increased of at least one CSBM (complete spontaneous bowel movement) in the same week for at least 2 of the 4 weeks in month 3 of the Treatment Period.
Measured: 12 Weeks
Change From Baseline in Stool Consistency
Change from baseline in stool consistency based upon the Bristol Stool Form Scale (BSFS). Baseline was the mean BSFS score recorded during the 2-week baseline diary assessment period prior to the first dose of study drug. BSFS Rating 1 to 7:
- Separate hard lumps, like nuts (hard to pass)
- Sausage-shaped but lumpy
- Like a sausage but with cracks on its surface
- Like a sausage or snake, smooth and soft
- Soft blobs with clear-cut edges (passed easily)
- Fluffy pieces with ragged edges, a mushy stool
- Watery, no solid pieces, entirely liquid
Measured: Baseline and 12-Week
Change From Baseline in Straining
Change from baseline in Straining Score over the 12-week treatment period. Baseline was the mean of non-missing straining scores recorded during the 2-week baseline diary assessment period prior to the first dose of study drug. The severity of straining during a bowel movement was measured using an 11-point scale (0-10 rating; 0 = no straining; 10 = worst straining).
Measured: Baseline and 12-Week
Change From Baseline in CSBMs (CSBMs/Week)Complete Spontaneous Bowel Movement
Change from baseline over the 12-week Treatment Period in CSBM (Complete Spontaneous Bowel Movement) Frequency Rate (CSBMs/Week). Baseline was the mean number of CSBMs recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.
Measured: Baseline and 12-Week
Number of Patients With a SBM Within 24 Hours After First Dose of Study Medication
A responder was any patient with a SBM within 24 hours after the first dose of study drug.
Measured: Up to 24 hours after the first dose of study drug
Change From Baseline in Abdominal Pain
Change from baseline in abdominal pain as measured with an 11-point (0-10) Numerical Rating Scale from 0 (None) to 10 (Worst Possible). Baseline was the mean of the non-missing abdominal pain scores recorded during the 2-week baseline diary assessment period prior to the first dose of study drug. The average daily abdominal pain score was the average of the non-missing worst daily abdominal pain scores (on a 0 to 10 scale) in the given week.
Measured: Baseline and 12-Week
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Jul 2015 (estimated)
- Study startJun 2015
- Primary completionNov 2016
- Study completionFeb 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Irritable Bowel Syndrome Characterized by ConstipationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 1,135 participants (actual)
Sponsor and investigators
- Lead sponsor
- Bausch Health Americas, Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Paul F.C. Eng, PhD, Study director, Synergy Pharmaceuticals Inc.
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02493452
- Sponsor's protocol ID
- SP304203-05
- Acronym
- IBS-C
- Status last verified
- Jun 2019
- First submitted
- 23 Jun 2015
- Last updated
- 14 Jun 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Brenner DM, Shin AS, Laitman AP, Deutsch JK, Kunkel DC. The Effectiveness of Plecanatide for Treating Constipation and Bloating in Patients Aged 18 to 40 Years With Irritable Bowel Syndrome: Utilization of a New Composite Trisymptom Endpoint. J Gastroenterol Hepatol. 2025 Dec;40(12):2890-2897. doi: 10.1111/jgh.70119. Epub 2025 Nov 10.
PubMed 41214272Cash BD, Sharma A, Walker A, Laitman AP, Chang L. Plecanatide for the treatment of chronic idiopathic constipation and irritable bowel syndrome with constipation: Post hoc analyses of placebo-controlled trials in adults with severe constipation. Neurogastroenterol Motil. 2023 Sep;35(9):e14632. doi: 10.1111/nmo.14632. Epub 2023 Jun 18.
PubMed 37332239Menees SB, Franklin H, Chey WD. Evaluation of Plecanatide for the Treatment of Chronic Idiopathic Constipation and Irritable Bowel Syndrome With Constipation in Patients 65 Years or Older. Clin Ther. 2020 Jul;42(7):1406-1414.e4. doi: 10.1016/j.clinthera.2020.05.012. Epub 2020 Jul 10.
PubMed 32660770
Study at a glance
From the registry record, last updated by the sponsor on 14 Jun 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Second Phase 3 Randomized, 12-Week, Double-Blind, Placebo-Controlled Study of the Safety and Efficacy of Plecanatide in Patients With Irritable Bowel Syndrome With Constipation (IBS-C)
- ClinicalTrials.gov ID
- NCT02493452
- Acronym / sponsor ID
- IBS-C / SP304203-05
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 1,135 participants (actual)
- Lead sponsor
- Bausch Health Americas, Inc.Industry (pharma, biotech, devices)
- Study start
- Jun 2015
- Primary completion
- Nov 2016 (actual)
- Study completion
- Feb 2017 (actual)
- First posted
- 9 Jul 2015 (estimated)
- Results
- Posted 14 Jun 2019
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study in patients with IBS-C is a randomized, double-blind, placebo-controlled, parallel-group clinical trial with 12 weeks of study drug therapy.
Detailed description
This study in patients with IBS-C is a randomized, double-blind, placebo-controlled, parallel-group clinical trial with 12 weeks of study drug therapy.
Screening/Baseline: Patients will undergo an up to 28-day Screening/Baseline period to allow for any necessary diagnostic procedures, allow for required washout of medications and to determine study eligibility. If otherwise eligible based on screening criteria, patients will undergo a 2-week baseline assessment using an electronic diary where they will record daily assessments of bowel movements (BMs), stool consistency (Bristol Stool Form Scale-BSFS), abdominal pain and other IBS-related symptoms. Data from the two-week electronic diary assessment just prior to the randomization visit will be used to confirm IBS-C and study eligibility as well as define the patient's baseline from which change will be determined.
Treatment: Patients who meet all entry criteria will be randomized (1:1:1) to one of three blinded treatment groups on Day 1 of the Treatment period. Patients will take an oral dose of study drug OD for 12 weeks and continue the daily electronic diaries (BMs, rescue medication use, abdominal pain, and other symptoms). During treatment weeks 4, 8, and 12, patients will return to the clinic to undergo safety and efficacy assessments.
Post-Treatment: For 2 weeks after completing dosing, patients will continue to complete daily electronic diaries. Patients will then return to the clinical site for a final follow-up visit during Week 14 following randomization.
The planned duration of participation in this study will be at least 116 days from signing of informed consent through post-treatment or up to approximately 135 days with visit windows considered.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| 3.0 mg plecanatide | Active comparator | Drug: PlecanatidePlecanatide 3.0 mg dosed daily for 12 weeks |
| 6.0 mg plecanatide | Active comparator | Drug: PlecanatidePlecanatide 6.0 mg dosed daily for 12 weeks |
| Matching placebo | Active comparator | Drug: PlaceboPlacebo dosed daily for 12 weeks |
Who may qualify
- Ages
- 18 to 85 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Adult patients between the ages of 18 and 85 years (inclusive) with a diagnosis of IBS based on ROME III diagnostic criteria and meeting criteria for diagnosis of the constipation predominant subtype - IBS-C
Key exclusion criteria (12 listed)
- Refusal or inability to sign informed consent for the trial
- Refusal or inability to complete daily Episodic (real-time) BM / RM calls, End of Day daily Calls, and/or complete electronic questionnaires
- BMI ≥ 40 or < 18
- Women of child bearing potential who refuse to use an acceptable method of birth control for the duration of the trial
- Women who are pregnant or lactating
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Plecanatide | Drug | 3.0 mg plecanatide, 6.0 mg plecanatide |
| Placebo | Drug | Matching placebo |
Primary outcome
Number of Overall Responders - ITT Population
Time frame: 12 weeks
An Overall Responder was a patient who was a weekly responder (i.e., decrease of 30% from baseline for abdominal pain intensity and an increase of at least 1 complete spontaneous bowel movement in the same week) for at least 6 of the 12 treatment weeks.
Number of Abdominal Pain Responders for at Least 6 of 12 Treatment Weeks
Time frame: 12 Weeks
An Abdominal Pain Intensity Responder was a patient who had a decrease of 30 % from baseline for abdominal pain intensity. Baseline is the mean of non-missing abdominal pain scores recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.
Number of Stool Frequency Responder for at Least 6 of the 12 Treatment Weeks
Time frame: 12 Weeks
A Stool Frequency Responder was a patient who experienced an increase of at least one CSBM (complete spontaneous bowel movement) per week from baseline. Baseline was the mean number of CSBMs recorded during the 2-week baseline diary assessment period prior to the first dose of study drug.
6 secondary outcomes
Number of Sustained Efficacy Responders
Time frame: 12 Weeks
Change From Baseline in Stool Consistency
Time frame: Baseline and 12-Week
Change From Baseline in Straining
Time frame: Baseline and 12-Week
Change From Baseline in CSBMs (CSBMs/Week)Complete Spontaneous Bowel Movement
Time frame: Baseline and 12-Week
Number of Patients With a SBM Within 24 Hours After First Dose of Study Medication
Time frame: Up to 24 hours after the first dose of study drug
Change From Baseline in Abdominal Pain
Time frame: Baseline and 12-Week
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Jun 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 41214272Brenner DM, Shin AS, Laitman AP, Deutsch JK, Kunkel DC. The Effectiveness of Plecanatide for Treating Constipation and Bloating in Patients Aged 18 to 40 Years With Irritable Bowel Syndrome: Utilization of a New Composite Trisymptom Endpoint. J Gastroenterol Hepatol. 2025 Dec;40(12):2890-2897. doi: 10.1111/jgh.70119. Epub 2025 Nov 10.
- Derived from this study: PubMed 37332239Cash BD, Sharma A, Walker A, Laitman AP, Chang L. Plecanatide for the treatment of chronic idiopathic constipation and irritable bowel syndrome with constipation: Post hoc analyses of placebo-controlled trials in adults with severe constipation. Neurogastroenterol Motil. 2023 Sep;35(9):e14632. doi: 10.1111/nmo.14632. Epub 2023 Jun 18.
- Derived from this study: PubMed 32660770Menees SB, Franklin H, Chey WD. Evaluation of Plecanatide for the Treatment of Chronic Idiopathic Constipation and Irritable Bowel Syndrome With Constipation in Patients 65 Years or Older. Clin Ther. 2020 Jul;42(7):1406-1414.e4. doi: 10.1016/j.clinthera.2020.05.012. Epub 2020 Jul 10.
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Not yet recruitingObservational study
Soluble and Osmotic Fibre (SOLOS) Diet for Constipation
Constipation, Constipation - Functional
Not yet recruiting
Effect of Functional Magnetic Therapy on Constipation Predominant- Irritable Bowel Syndrome (IBS-C)
Irritable Bowel Syndrome
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Paul F.C. Eng, PhD study director
Synergy Pharmaceuticals Inc.
191 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Plecanatide in people with Irritable Bowel Syndrome Characterized by Constipation, run by Bausch Health Americas, Inc. at 191 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 14 Jun 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 191 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 14 Jun 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Overall Responders - ITT Population (time frame: 12 weeks). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02493452, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Jun 2019.