Change in individual symptom scores per MPN-SAF TSS 2.0 between baseline and week 24 by dosing arm. Median percent change in individual symptom scores show greatest improvement on the 200 mg twice per day dose for the majority of abdominal- and cytokine-related symptoms. Abd, abdominal; MPN-SAF TSS, Myeloproliferative Neoplasm Symptom Assessment Form Total Symptom Score.