The phase 3 PERSIST-1 study showed that pacritinib, a selective inhibitor of Janus Kinase 2 (JAK2) and Fms-Like Tyrosine Kinase-3 (FLT3), is more effective than the best available therapy (BAT) at improving disease symptoms and quality of life (QoL) for patients with myelofibrosis. Patient-reported outcomes (PROs), which have become important for approval of new therapies, was also measured to determine whether pacritinib reduced patients’ symptom burden and helped them feel better.
