ASCO and EHA Meeting Reporter: Making the Most of New Data in Myeloproliferative Neoplasms

The novel JAK and AVCR1 inhibitor jaktinib demonstrated promising therapeutic activity in patients with myelofibrosis who were intolerant to or progressed on ruxolitinib.

Administration of the selective ALK-2 inhibitor zilurgisertib alone or in combination with ruxolitinib was safe, well tolerated, and showed preliminary signals of clinical activity in patients with primary or secondary myelofibrosis and disease-related anemia.

Rusfertide demonstrated freedom from phlebotomy, sustained hematocrit control, and 12-week treatment completion in 69.2% vs 18.5% of patients with phlebotomy-dependent polycythemia vera who received placebo, meeting the primary end point of the phase 2 REVIVE trial.

Ruxolitinib was found to improve spleen volume and tumor symptom score in patients with myelofibrosis, irrespective of their anemia and transfusion status, according to data from a post-hoc analysis of the phase 3 COMFORT-I and -II trials.

Patients with primary or secondary TP53 wild-type myelofibrosis who experienced suboptimal response to ruxolitinib had clinically meaningful improvements in spleen volume reduction with the addition of navtemadlin to ruxolitinib,

Treatment with pelabresib monotherapy led to a 60% confirmed complete or partial hematologic response at any time without incurring grade 4 or 5 treatment-related adverse effects in patients with high-risk essential thrombocythemia refractory or intolerant to hydroxyurea.

Treatment with the first-in-class direct and competitive telomerase inhibitor imetelstat resulted in statistically significant and clinically meaningful efficacy in patients with heavily transfusion dependent, non-del(5q) lower-risk myelodysplastic syndrome that is relapsed or refractory to erythropoiesis stimulating agents, according to findings from the phase 3 IMerge trial.

Luspatercept-aamt led to a higher rate of sustained transfusion independence compared with erythropoiesis stimulating agents in patients with ESA-naïve, lower-risk myelodysplastic syndrome.

Treatment with ruxolitinib generated superior responses vs treatment with best available therapy in patients with hydroxycarbamide-intolerant or -resistant polycythemia vera, according to findings from the phase 2 MAJIC-PV trial.