ClinicalTrials.gg
CompletedNCT02220348LIN-PK-01Updated Dec 19, 2020

A Lactation Study in Women Who Are Breastfeeding or Pumping and Are Receiving Linaclotide Therapeutically

A Phase 1 interventional study of linaclotide in Breast Feeding, Constipation and Irritable Bowel Syndrome, sponsored by Forest Laboratories. Completed at 2 sites in United States. Open to female participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2020-12-19.

Sponsored by Forest Laboratories (part of AbbVie) · Phase 1, Interventional, and Other

Phase
Phase 1
Study type
Interventional
Enrollment
7
Allocation
Not applicable
Ages
18 Years to 45 Years
Sex
Female
01

Study summary

The purpose of this study is to determine the amount of linaclotide and its active metabolite (MM-419447) excreted in breast milk after multiple, once daily doses of linaclotide (72 μg, 145 μg, or 290 μg) in lactating women receiving the drug therapeutically.

02

Conditions studied

  • Breast Feeding
  • Constipation
  • Irritable Bowel Syndrome

Keywords

  • Linzess
03

In context

Breast Feeding

1,081 studies on the registry are indexed under Breast Feeding; 217 are open to participants now.

This study's enrollment of 7 is below the median of 100 across 844 interventional studies indexed under Breast Feeding.

Browse Breast Feeding studies →

Lead sponsor

Forest Laboratories is the lead sponsor of 168 studies on the registry; none are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 6 (100%) have results posted.

First submitted before Forest Laboratories became part of AbbVie.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Be a lactating female who has been actively breastfeeding or pumping for at least 4 weeks
  • Be already taking linaclotide therapeutically for Irritable Bowel Syndrome with Constipation (IBS-C) or Chronic Idiopathic Constipation (CIC)
  • Weaning must not be underway
  • Be willing to breastfeed or pump regularly during the study to maintain milk supply and discontinue breastfeeding for the 24-hour period of breast milk collection

Exclusion criteria

Exclusion Criteria:

  • disease state in any body system, except for the indication being treated with linaclotide
  • Any structural abnormality of the gastrointestinal (GI) tract, or a disease or condition that can affect GI motility
  • Participation in any other clinical investigation using an experimental drug within 90 days
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
7 participants (actual)

Study arms

  • Experimental
    linaclotide

    Linaclotide 72μg, 145 μg, or 290 μg capsules, once daily for 3 days, oral administration

    Drug: linaclotide

Interventions

06

What researchers measure

Primary outcomes

  1. Amount of linaclotide and its active metabolite (MM-419447) excreted in breast milk

    Time frame: From Baseline (Day 1) to Day 4

07

Study locations

2 sites
  • University of Iowa
    Iowa City, Iowa 52242, United States
  • Digestive Disease Specialists Inc (DDSI)
    Oklahoma City, Oklahoma 73112, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 19, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02220348
Responsible party
Sponsor
First posted
Aug 19, 2014
Start date
Jul 31, 2014
Primary completion
May 31, 2019
Completion
May 31, 2019
Last update
Dec 19, 2020

Study contacts

Ramesh Boinpally, PhD
study director · Forest Research Institute, an affiliate of Allergan plc.

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2020. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Linaclotide

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