Monitoring the effects of mavacamten during pregnancy and breastfeeding

Mavacamten Pregnancy Surveillance Program

Observational Bristol-Myers Squibb · NCT05939700

This study is testing how safe the heart medication mavacamten is for mothers and their babies during pregnancy and breastfeeding.

Quick facts

Study typeObservational
Enrollment20 (estimated)
Ages15 Years and up
SexFemale
SponsorBristol-Myers Squibb Industry-sponsored
Locations1 site (Wilmington, North Carolina)
Trial IDNCT05939700 on ClinicalTrials.gov

What this trial studies

This observational program aims to evaluate the safety of mavacamten exposure during pregnancy and breastfeeding by assessing maternal, fetal, and infant outcomes. Participants must have received at least one dose of mavacamten at any time from four months prior to conception through the outcome of the pregnancy or during breastfeeding. The study will gather data on the health effects for both mothers and infants to ensure safety and inform future use of the medication in these populations.

Who should consider this trial

Good fit: Ideal candidates are individuals who have taken mavacamten during pregnancy or breastfeeding and are at least 15 years old.

Not a fit: Patients who have not been exposed to mavacamten during pregnancy or breastfeeding will not benefit from this study.

Why it matters

Potential benefit: If successful, this program could provide critical safety information for mothers and infants exposed to mavacamten during pregnancy and breastfeeding.

How similar studies have performed: While this specific approach is observational and may not have been extensively tested, similar studies assessing medication safety during pregnancy have shown the importance of monitoring outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Exposure to at least 1 dose of mavacamten at any time during pregnancy (from 4 months prior to conception to pregnancy outcome) and/or at any time during breastfeeding (up to 12 months of infant age or weaning, whichever comes first)
* At least 15 years of age or older at the time of enrollment
* Informed consent or institutional review board/ethics committee-approved waiver of informed consent

Exclusion Criteria:

\- None

Where this trial is running

Wilmington, North Carolina

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions BreastfeedingHypertrophic CardiomyopathyPregnancy Related
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.