A Study to Evaluate Safety and Efficacy of Bomedemstat (MK-3543-017)

Condition(s) studied

Investigational drug(s) / intervention(s)

Bomedemstat: 10, 15, 20, and 50 mg oral capsules

Study summary

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

* Participants 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 hematologic remission.

No hypothesis testing will be conducted in this study.

Eligibility

Primary outcome measure(s)

• Percentage of participants with one or more adverse events (AEs) — Up to ~10 years
  An AE is any undesirable physical, psychological or behavioral effect experienced by a patient during participation in an investigational study, in conjunction with the use of the drug or biologic, whether or not product-related. This includes any untoward signs or symptoms experienced by the patient from the time of first dose with bomedemstat under this protocol until completion of the study. The percentage of participants with AEs will be presented.
• Percentage of participants who discontinued study treatment due to an AE — Up to ~10 years
  An AE is any undesirable physical, psychological or behavioral effect experienced by a patient during participation in an investigational study, in conjunction with the use of the drug or biologic, whether or not product-related. This includes any untoward signs or symptoms experienced by the patient from the time of first dose with bomedemstat under this protocol until completion of the study. The percentage of participants who discontinued study treatment due to an AE will be presented.

Trial sites (21)