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Real-world momelotinib in myelofibrosis: A multicenter Italian study

By Devon Else

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Oct 1, 2025

Learning objective: After reading this article, learners will be able to cite a new clinical development in myelofibrosis.


Results from a retrospective, multicenter, Italian study evaluating momelotinib safety and efficacy in patients with myelofibrosis (MF) and anemia (N = 39), including those with prior exposure to Janus kinase inhibitors (JAKi), were recently published in the European Journal of Haematology by Martorelli et al.

Key data: Overall response rates (ORRs) in patients with transfusion dependence and independence were 56% and 46%, respectively. At Week 24, hemoglobin increase >1.5 g/dL was observed in 26% of patients, constitutional symptom improvement in 51% of patients, and spleen volume reduction (SVR) >35% in 28% of patients.

Key learning: Momelotinib demonstrated substantial clinical activity in real-world patients with MF and anemia, including those previously treated with other JAKi, supporting its use in clinical practice.

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If you use erythropoiesis-stimulating agents (ESA) in the management of myelofibrosis, do you primarily base your use of ESA on patients’ erythropoietin (EPO) levels?