A Study of JNJ-67571244 in Participants With Relapsed or Refractory Acute Myeloid Leukemia (AML) or Myelodysplastic Syndrome (MDS)

This is first-in-human (FIH) Phase 1, open-label, multicenter, dose escalation study with dose expansion to evaluate the safety, tolerability, and preliminary antitumor activity of JNJ-67571244 in adult participants with relapsed or refractory acute myeloid leukemia (AML) or high-risk or very high-risk myelodysplastic syndromes (MDS) who are ineligible for or have exhausted standard therapeutic options. The study is divided into 3 periods: a Screening Phase (within 28 days before the first dose of study drug), a Treatment Phase (first dose of study drug until the last dose of study drug) and a Post-treatment Follow-up Phase (up to the end of study participation or end of study). Duration of study is 2.3 years.