Evaluation of the dose and efficacy of ruxolitinib in Japanese patients with myelofibrosis.

Evaluation of the dose and efficacy of ruxolitinib in Japanese patients with myelofibrosis. Int J Hematol. 2017 Oct 06;: Authors: Kirito K, Okamoto S, Ohishi K, Tauchi T, Handa H, Saito S, Takenaka K, Shimoda K, Oritani K, Akashi K, Okada H, Amagasaki T, Suzuki K, Yonezu T, Komatsu N Abstract Ruxolitinib, a potent JAK1/JAK2 inhibitor, improved splenomegaly and myelofibrosis-associated symptoms and prolonged survival compared with placebo and best available therapy in the phase 3 COMFORT studies. Although cytopenias were the most common adverse events associated with ruxolitinib treatment, a COMFORT-I analysis showed that they were managed effectively with dose modifications, without a negative impact on the efficacy of ruxolitinib. Subsequently, studies A2202 and AJP01 showed that ruxolitinib is an effective treatment for Japanese patients with myelofibrosis. We conducted a pooled analysis of these two studies (N = 81) to evaluate the association between ruxolitinib dose and changes in spleen volume or symptoms in Japanese patients. Most patients began treatment at 15 or 20 mg twice daily (BID); 70% received a final titrated dose ≥ 10 mg BID. Overall, 91% of patients exhibited spleen volume reductions; patients with final titrated doses ≥ 10 mg BID had larger spleen volume reductions. Similarly, 83% of patients showed improvements in symptom scores; those with a final titrated dose of 20 or 25 mg BID had the greatest re...
Source: International Journal of Hematology - Category: Hematology Authors: Tags: Int J Hematol Source Type: research