CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 381 enrolled
Drug / intervention
Irritable Bowel Syndrome with Constipation (IBS-C) participants (LIN-MD-63 and LIN-MD-64 completers) +1 moredrug
Likely dose
Irritable Bowel Syndrome with Constipation (IBS-C) participants (LIN-MD-63 and LIN-MD-64 completers) 290 μgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04166058
NCT04166058Phase 3Completed

A Phase 3, Open-label, Long-term Safety Study of Oral Linaclotide Administered to Pediatric Participants With Functional Constipation (FC) or Irritable Bowel Syndrome With Constipation (IBS-C)

AbbVie·interventional·Posted Nov 18, 2019·Updated Jan 6, 2026

In Brief

A Phase 3 clinical trial evaluating Irritable Bowel Syndrome with Constipation (IBS-C) participants (LIN-MD-63 and LIN-MD-64 completers) and Functional Constipation (FC) participants (LIN-MD-62 and LIN-MD-64 completers) for Irritable Bowel Syndrome With Constipation and Functional Constipation. Completed, enrolled 381 participants across 72 sites in 4 countries.

Detailed Summary

LIN-MD-66 is a Phase 3 open-label study with 24 weeks (Functional Constipation participants) or 52 weeks (Irritable bowel syndrome with constipation participants) of linaclotide exposure that will enroll pediatric participants (6-17 years of age) with FC or IBS-C who completed study intervention in studies LIN-MD-62, LIN-MD-63, or LIN-MD-64 based on the individual study criteria.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesCanada, Israel, Netherlands, United States

Timeline

Phase 3CompletedFinished
2020202120222023202420252026
First PostedNov 18, 2019
Enrollment StartNov 19, 2019
Primary CompletionJun 5, 2025
TodayJul 2, 2026
Enrollment to primary: 5.5 yearsPosted 6.6 years ago

Interventions

Irritable Bowel Syndrome with Constipation (IBS-C) participants (LIN-MD-63 and LIN-MD-64 completers)drug

Participants who completed study LIN-MD-63 at their time of enrollment will be assigned a dose of 290 μg. Participants who received ≤ 145 μg linaclotide or placebo in study LIN-MD-63 at the time of completion will continue to receive 145 μg. Participants who completed study LIN-MD-64 at their time of enrollment will be assigned a dose of 290 μg if they choose to receive open-label or continue to receive blinded dose of 145 or 290 μg if they choose to remain on the same blinded dose.

Functional Constipation (FC) participants (LIN-MD-62 and LIN-MD-64 completers)drug

Participants whom are between the ages of 6-11 years old at their time of enrollment will be assigned a dose of 72 μg. Participants whom are between the ages of 12-17 years old at their time of enrollment will be randomized at 1:1 ratio to 72 or 145 μg linaclotide.