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Irritable Bowel Syndrome with Constipation participants

Phase 3

Irritable Bowel Syndrome With Constipation | Small molecule | Gastrointestinal |AbbVie Inc.|Last Updated: Jan 6, 2026

Success Probability

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Market & Valuation

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Trial Design

ACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment381

FDA Designations

No designations recorded

Clinical trial landscape

Irritable Bowel Syndrome with Constipation participants · 1 trial · 2 indications

Phase 3 1
NCT04166058Long-term Safety of Linaclotide in Pediatric Participants With FC or IBS-CIrritable Bowel Syndrome With Constipation
COMPLETED381 Analytics
PHASE3COMPLETED
Long-term Safety of Linaclotide in Pediatric Participants With FC or IBS-C
Irritable Bowel Syndrome With ConstipationUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants With Treatment-Emergent Adverse Events (TEAEs).
From first dose of study drug until 30 days following last dose of study drug [up to 24 weeks (FC participants) or 52 weeks (IBS-C participants)].

An adverse event (AE) is defined as any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product which does not necessarily have a causal relationship with this treatment. The investigator assesses the relationship of each event to the use of study drug. A serious adverse event (SAE) is an event that results in death, is life-threatening, requires or prolongs hospitalization, results in a congenital anomaly, persistent or significant disability/incapacity or is an important medical event that, based on medical judgment, may jeopardize the participant and may require medical or surgical intervention to prevent any of the outcomes listed above. Treatment-emergent adverse events/treatment-emergent serious adverse events (TEAEs/TESAEs) are defined as any event that began or worsened in severity on or after the first dose of study drug.

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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
72 μg linaclotideACTIVE_COMPARATORAn oral capsule that is taken once daily. It may be taken whole or sprinkled into 1 teaspoonful of applesauce or 30mL of bottled water.
145 μg linaclotideACTIVE_COMPARATORAn oral capsule that is taken once daily. It may be taken whole or sprinkled into 1 teaspoonful of applesauce or 30mL of bottled water.
290 μg linaclotideACTIVE_COMPARATORAn oral capsule that is taken once daily. It may be taken whole or sprinkled into 1 teaspoonful of applesauce or 30mL of bottled water.

Interventions

NameTypeDescription
Irritable Bowel Syndrome with Constipation (IBS-C) participants (LIN-MD-63 and LIN-MD-64 completers)DRUGParticipants 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)DRUGParticipants 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.
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Eligibility Criteria

Age Range6 Years to 18 Years
SexALL
Healthy VolunteersNo
Study Sites72

Inclusion Criteria: * Participant weighs ≥ 18 kg at the time the parent/guardian/LAR and/or caregiver has provided signed consent. * Female participants who have had their first menstrual period and are sexually active must agree to use a reliable form of contraception. * Participants must have com...

Countries:United StatesCanadaIsraelNetherlands
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