September 10, 2024
Author(s): Jax DiEugenio
Fact checked by: Chris Ryan
Pacritinib (Vonjo) generated improvements in thrombocytopenia and anemia in patients with myelofibrosis treated in the real-world setting, according to data from a retrospective study presented at the 2024 SOHO Annual Meeting.1
Findings showed that patients with a platelet count below 100 x 109/L at baseline (n = 74) experienced an early increase in platelet count following treatment initiation that was maintained throughout the observation period. Additionally, an early increase in median hemoglobin was reported in all patients, and this increase was sustained throughout the observation period. Patients with hemoglobin level of less than 8.0 g/dL at the start of treatment (n = 35) experienced a hemoglobin increase of nearly 1 g/dL by day 30.
Notably, patients who received prior treatment with ruxolitinib (Jakafi; n = 69) experienced an increase in platelet counts and hemoglobin levels following initiation of pacritinib. At baseline, the median platelet count and median hemoglobin level in this population was 91.0 x 109/L and 8.7 g/dL, respectively. At day 360, the median platelet count and median hemoglobin were 97.0 x 109/L and 10.4 g/dL, respectively.
“In addition to spleen and symptom benefits observed in previous clinical trials, real-world outcomes demonstrate stability or improvement in thrombocytopenia and/or anemia in patients with myelofibrosis treated with pacritinib,” lead study author Michael Marrone, PhD, MPH, and colleagues, wrote in a poster presentation of the data. Marrone is an assistant professor in the College of Medicine, Department of Public Health Sciences, at the Medical University of South Carolina in Charleston.