RecruitingDrug trialStudy of DISC-0974 (RALLY-MF) in Participants With Myelofibrosis or Myelodysplastic Syndrome and AnemiaThis phase 1b/2a open-label study will evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, and clinical activity of DISC-0974 as well as categorize the effects on hematologic response in participants with myelofibrosis or myelodysplastic syndrome and anemia.