Updated Results from an Open-Label, Multicenter, Expanded Treatment Protocol (ETP) Phase (Ph) 3b Study of Ruxolitinib (RUX) in Patients (Pts) with Polycythemia Vera (PV) Who Were Hydroxyurea (HU) Resistant or Intolerant and for Whom No Alternative Treatment (Tx) Was Available

BACKGROUNDFew Tx options are available for pts with inadequately controlled PV. European LeukemiaNet defined resistance/intolerance was seen in 25% pts treated with HU (Alvarez-Larran et al, 2012). In the HU-resistant/intolerant PV pts evaluated in the pivotal RESPONSE study (week [wk] 208), RUX was well tolerated and superior to standard therapy in achieving durable hematocrit (HCT) control, hematologic response, and spleen size and symptom reductions. This Ph 3b ETP study was planned to provide RUX Tx to HU-resistant/intolerant PV pts, who have no alternative standard Tx, and are not eligible for any ongoing clinical studies. Results from wk 24 data cutoff of this study (Devos et al) were presented at ASH 2017. Here, we report consolidated findings from the ETP study at wk 96 data cutoff (Dec 29, 2017 [final database lock]) to further support the use of RUX in this pt population with an unmet medical need.METHODSRUX Tx was initiated at a starting dose of 10 mg bid (could be titrated to a maximum of 25 mg bid). Visits were scheduled every 4 wks until wk 24 and every 12 wks thereafter; final analysis was done when all pts had been followed for 30 days after discontinuation of Tx or completion of Tx per protocol (transitioned to commercial RUX or until Dec 31, 2017, whichever date occurred first). The primary endpoint was to assess the safety of RUX. Secondary endpoints included change in HCT level, change in spleen length, and pt-reported outcomes (change in MPN-SAF TSS score...
Source: Blood - Category: Hematology Authors: Tags: 634. Myeloproliferative Syndromes: Clinical: Poster I Source Type: research

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