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ClinicalTrials.gov record
Completed Phase 3 Interventional Results available

Trial of IW-3718 for 8 Weeks in Patients With Persistent Gastroesophageal Reflux Disease (GERD) Receiving Proton Pump Inhibitors (PPIs)

ClinicalTrials.gov ID: NCT03561883

Public ClinicalTrials.gov record NCT03561883. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 2:11 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 3, Randomized, Double-blind, Placebo-controlled, Parallel-group, Multicenter Trial of Oral IW-3718 Administered to Patients With Gastroesophageal Reflux Disease While Receiving Proton Pump Inhibitors

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The objective of this study is to evaluate the safety and efficacy of IW-3718 administered to patients with GERD who continue to have persistent symptoms, such as heartburn and regurgitation, while receiving once-daily (QD), standard dose PPIs.

Study identification

NCT ID
NCT03561883
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Enrollment
609 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Sep 6, 2018 (Actual)
Primary completion
Jul 28, 2020 (Actual)
Completion
Nov 6, 2020 (Actual)
Last update posted
Aug 18, 2021

2018 – 2020

United States locations

U.S. sites
98
U.S. states
31
U.S. cities
84
Facility City State ZIP Site status
University of Alabama at Birmingham Birmingham Alabama 35294 —
Digestive Health Specialists of The Southeast Dothan Alabama 36305 —
Holland Center for Family Health Peoria Arizona 85381 —
Hope Research Institute LLC Peoria Arizona 85381 —
Atria Clinical Research Little Rock Arkansas 72209 —
Preferred Research Partners Little Rock Arkansas 72211 —
Hope Clinical Research, LLC Canoga Park California 91303 —
Om Research LLC Lancaster California 93534 —
Torrance Clinical Research Lomita California 90717 —
United Gastroenterologists Murrieta California 92563 —
Clinical Applications Laboratories Inc San Diego California 92103 —
Care Access Research, San Pablo San Pablo California 94806 —
Paragon Rx Clinical, Inc. - Santa Ana Santa Ana California 92703 —
Medical Research Center of Connecticut LLC Hamden Connecticut 06518 —
Yale School of Medicine New Haven Connecticut 06510 —
Stamford Therapeutics Consortium Stamford Connecticut 06905 —
Optimus U Corp Coral Gables Florida 33134 —
Nature Coast Clinical Research LLC - ERN-PPDS Inverness Florida 34452 —
Jacksonville Center For Clinical Research Jacksonville Florida 32207 —
Precision Clinical Research, LLC Lauderdale Lakes Florida 33319 —
Suncoast Research Group LLC - ERN-PPDS Miami Florida 33135 —
Applemed Research Inc Miami Florida 33155 —
Gutierrez Medical Center Orlando Florida 32807 —
Columbus Regional Research Institute at Talbotton Columbus Georgia 31904 —
Consultative Gastroenterology Decatur Georgia 30034 —
Atlanta Center For Clinical Research Roswell Georgia 30075 —
Clinical Research Atlanta - ERN-PPDS Stockbridge Georgia 30281 —
IL Gastroenterology Group Gurnee Illinois 60041 —
Edward Hines Jr VA Hospital - NAVREF Hines Illinois 60141 —
Aquiant Research New Albany Indiana 47150 —
Kansas Medical Clinic Topeka Kansas 66606 —
Heartland Research Associates LLC Wichita Kansas 67207 —
Gastroenterology Associates LLC Baton Rouge Louisiana 70809 —
Texas Digestive Disease Consultants Baton Rouge Louisiana 70809 —
Clinical Trials of America LA LLC West Monroe Louisiana 71291 —
Investigative Clinical Research Annapolis Maryland 21401 —
Centennial Medical Group Elkridge Maryland 21075 —
Commonwealth Clinical Studies LLC Brockton Massachusetts 02302 —
Center For Digestive Health Troy Michigan 48098 —
Gastroenterology Associates of West Michigan Wyoming Michigan 49519 —
Gastroenterology Associates of Western Michigan, PLC Wyoming Michigan 49519 —
Gastrointestinal Associates PA Flowood Mississippi 39232 —
Kansas City VA Medical Center - NAVREF Kansas City Missouri 64128 —
Washington University St Louis Missouri 63110 —
Digestive Disease Specialists Las Vegas Nevada 89128 —
Office of Michael Zimmerman, MD Las Vegas Nevada 89128 —
Morristown Medical Center Morristown New Jersey 07960 —
NYScientific Brooklyn New York 11235 —
Long Island Gastrointestinal Research Group LLP Great Neck New York 11023 —
United Health Services Hospitals Johnson City New York 13790 —
Syracuse VA Medical Center - NAVREF Syracuse New York 13210 —
Advantage Clinical Trials The Bronx New York 10468 —
Asheville Gastroenterology Associates PA Asheville North Carolina 28801 —
UNC Medical Center Chapel Hill North Carolina 27599 —
Duke University Medical Center Durham North Carolina 27710 —
Carolina Digestive Diseases Greenville North Carolina 27834 —
Clinical Trials of America-NC, LLC Mount Airy North Carolina 27030 —
PMG Research of Salisbury LLC Salisbury North Carolina 28144 —
Trial Management Associates LLC Wilmington North Carolina 28403 —
Hightop Medical Research Center Cincinnati Ohio 45224 —
MetroHealth Medical Center Cleveland Ohio 44109 —
Remington Davis Inc Columbus Ohio 43214 —
Dayton Gastroenterology Inc Dayton Ohio 45440 —
Prestige Clinical Research Franklin Ohio 45005 —
Central Sooner Research Norman Oklahoma 73071 —
The University of Oklahoma Health Sciences Center Oklahoma City Oklahoma 73104 —
Lynn Health Science Institute - ERN-PPDS Oklahoma City Oklahoma 73112 —
Northwest Gastroenterology Clinic Portland Oregon 97210 —
Research Protocol Management Specialists Pittsburgh Pennsylvania 15241 —
Research Protocol Management Specialists Pittsburgh Pennsylvania 15243 —
Guthrie Research Institute Sayre Pennsylvania 18840 —
Omega Medical Research Warwick Rhode Island 02886 —
Clinical Trials of South Carolina - ClinEdge - PPDS Charleston South Carolina 29406 —
Pharmacorp Clinical Trials Incorporated Charleston South Carolina 29412 —
Gastroenterology Associates, PA Greenville South Carolina 29615 —
Coastal Carolina Research Center Mt. Pleasant South Carolina 29464 —
Clinical Trials of South Carolina North Charleston South Carolina 29406 —
Franklin Gastroenterology Franklin Tennessee 37067 —
Clinical Research Solutions PC Jackson Tennessee 38305 —
QUALITY Medical Research - Interspond - PPDS Nashville Tennessee 37211 —
Inquest Clinical Research Baytown Texas 77521 —
Texas Health Physicians Group Carrollton Texas 75007 —
Northside Gastroenterology Cypress Texas 77429 —
Texas Tech University Health Sciences Center El Paso Texas 79905 —
Kelsey Research Foundation Houston Texas 77025 —
Houston Endoscopy and Research Center Houston Texas 77079 —
Coastal Medical Group Houston Texas 77089 —
San Antonio Gastroenterology Associates Clinical Trials (SAGACT PLLC) San Antonio Texas 78229 —
Care Access Research Salt Lake City Utah 84124 —
University of Utah Health Sciences Center Salt Lake City Utah 84132-2101 —
University of Utah Hospital Salt Lake City Utah 84132-2101 —
Advanced Clinical Research - Gut Whisperer- ERN-PPDS West Jordan Utah 84088 —
Digestive and Liver Disease Specialists Norfolk Virginia 23502 —
The Gastroenterology Group Reston Virginia 22191 —
Clinical Research Partners LLC Richmond Virginia 23220 —
Clinical Research Partners LLC Richmond Virginia 23235 —
Aurora Medical Center Summit Summit Wisconsin 53066 —
Aurora Health Care Waukesha Wisconsin 53186 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 3 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03561883, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Aug 18, 2021 · Synced Oct 21, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03561883 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →