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Brand names: Vonjo
12.1 Mechanism of Action Pacritinib is an oral kinase inhibitor with activity against wild type Janus associated kinase 2 (JAK2), mutant JAK2V617F, FMS-like tyrosine kinase 3 (FLT3), and interleukin 1 receptor associated kinase-1 (IRAK1) which contribute to signaling of a number of cytokines and growth factors that are important for hematopoiesis and immune function. Pacritinib is also an inhibitor of activin A receptor, type 1/activin receptor like-kinase 2 (ACVR1/ALK2). MF is often associated with dysregulated JAK2 signaling. At clinically relevant concentrations, pacritinib does not inhibit JAK1. Pacritinib has higher inhibitory activity for JAK2 compared to JAK3 and tyrosine kinase 2 (TYK2). Pacritinib exhibits inhibitory activity against additional cellular kinases, such as colony stimulating factor 1 receptor (CSF1R), of which the clinical relevance in myelofibrosis is unknown.
Contraindications
8 documented side effects by frequency
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14 available comparisons
Dosage Forms
Tablet
Route
Oral