Pelabresib used as a monotherapy appears clinically beneficial in patients who have high-risk essential thrombocythemia (HR ET) and are intolerant to hydroxyurea (HU), according to a study presented at the 2023 American Society of Clinical Oncology Annual Meeting. In this analysis of arm 4 of the MANIFEST study, lead investigator Francesco Passamonti and colleagues evaluated 20 patients with HR ET who received pelabresib monotherapy 225 mg QD. Their key end point of interest was complete hematologic response (CHR), which was defined as normalization of platelet count (≤400 x 109/L) and WBC count (≤10 x ...
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