This is an open-label, single-arm, Phase 2 interventional study designed to evaluate the safety and efficacy of Bomedemstat (IMG-7289) when added to Momelotinib in patients with Myelofibrosis (MF) who exhibit a suboptimal response to Momelotinib alone or who present with baseline cytopenias and do not achieve adequate improvement after 12 weeks of Momelotinib monotherapy.
The study consists of three phases:
1. Screening Phase (up to 28 days)
2. Momelotinib Monotherapy Phase - Weeks 0-12
3. Combination Treatment Phase (Momelotinib + Bomedemstat) - Weeks 12-24
4. Post-Treatment Follow-up Phase (30 days post last dose + long-term survival follow-up) All patients will continue on Momelotinib throughout the study unless toxicity or safety considerations necessitate modification.