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No longer recruiting (closed or complete)Last updated: 27 November 2025

MK-3543-017: A study that is collecting long-term safety and efficacy data from people who have participated in a prior clinical trials with bomedemstatA Multicenter, Open-Label, Extension Study Evaluating the Safety and Efficacy of Bomedemstat for the Treatment of Participants Enrolled in a Prior Bomedemstat Clinical Study

Trial purpose

Medical clipboardCancer treatment

Tumor type

Blood Cancers Haematological

Age

People18+

Trial acronym

MK-3543-017

Clinical summary

Summary

The main purpose of the study is to transition participants into an extension study to collect long-term safety and efficacy data.

This study will include participants who are safely tolerating bomedemstat, receiving clinical benefit from its use in estimation of the Investigator, and have shown the following criteria:

  • Partcipants from the IMG-7289-202/MK-3543-005 (NCT05223920) study must have received at least 6 months of treatment with bomedemstat;
  • Essential thrombocythemia (ET) and polycythemia vera (PV) participants from studies other than IMG-7289-202/MK-3543-005 must have achieved confirmed haematologic remission.

Eligibility

Inclusion

  • Is from a bomedemstat study sponsored by Imago BioSciences, Inc. (a subsidiary of Merck & Co., Inc.) or MSD, and established by the Sponsor as MK-3543-017 ready
  • Has received at least 6 months of treatment with bomedemstat in the IMG-7289-202/MK-3543-005 study, while safely tolerating bomedemstat, and receiving clinical benefit from its use in the estimation of the investigator
  • ET and PV participants from established feeder studies other than IMG-7289- 202/MK-3543-005 must have achieved confirmed hematologic remission, must be safely tolerating bomedemstat, and must be receiving clinical benefit from its use in the estimation of the investigator
  • Is not currently on a dose hold
  • Participant must be able to swallow oral medication and follow instructions for at-home dosing of bomedemstat

Exclusion

  • Has received prohibited concomitant medications
  • Ongoing or planned participation in another investigational study
  • Has noncompliance in prior bomedemstat study receiving <90% of assigned doses excluding suspensions or holds as assigned by the investigator

Inclusion

  • You have previously participated in a certain specific clinical trial.
  • You are able to swallow medication by mouth.
  • You have had a certain type of treatment or surgical procedure.

Exclusion

  • You have had certain treatments, surgical procedures or drugs.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

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More information

Trial Identifiers

Information on this page is partially produced from ClinicalTrials.gov *. View further details about this trial on the registry via the links below:

  • NCT06351631 *
  • 3543-017; 2023-506996-89-00; U1111-1294-8621; MK-3543-017

Trial sponsor

Merck Sharp & Dohme LLC

Scientific Title

A Multicenter, Open-Label, Extension Study Evaluating the Safety and Efficacy of Bomedemstat for the Treatment of Participants Enrolled in a Prior Bomedemstat Clinical Study

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