Phase III data from RESPONSE 2 trial showed Jakavi (ruxolitinib) support for patients with polycythemia vera.- Novartis

Novartis announced Phase III data from RESPONSE-2 showing that Jakavi (ruxolitinib) helped patients with polycythemia vera (PV), who did not have an enlarged spleen and were resistant to or intolerant of hydroxyurea, achieve superior hematocrit control compared to best available therapy (BAT) at 28 weeks (62.2% vs 18.7%, respectively; p<0.0001). the findings were presented for the first time at the 21st congress of the european hematology association eha in copenhagen denmark.>

Patients with PV in the study were classified as inadequately controlled based on the modified European LeukemiaNet (ELN) criteria, which defines resistance to or intolerance of hydroxyurea as hematocrit levels greater than 45%, elevated white blood cell count and/or platelet count, and the presence of hydroxyurea-related non-hematologic toxicities. In addition to meeting its primary endpoint of proportion of patients achieving hematocrit control, the RESPONSE-2 study showed that nearly five times more patients with PV achieved complete hematologic remission with Jakavi compared to BAT at 28 weeks (23.0% vs 5.3%, respectively; p=0.0019). Patients taking Jakavi also experienced complete resolution of their symptoms related to PV compared to BAT (50.0% vs 7.7%, respectively). Overall, Jakavi was well tolerated. Findings from this study are consistent with data from the RESPONSE pivotal trial evaluating patients with inadequately controlled PV with an enlarged spleen.