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      A phase II study of vorinostat and rituximab for treatment of newly diagnosed and relapsed/refractory indolent non-Hodgkin lymphoma.

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          Abstract

          This study examines the activity and tolerability of a regimen combining vorinostat and rituximab in patients with indolent B-cell non-Hodgkin lymphoma. A total of 28 patients with newly diagnosed or relapsed/refractory follicular, marginal zone, or mantle cell lymphoma, with 4 or less prior therapies were eligible for this open-label phase II study. Oral vorinostat 200 mg was administered twice daily on days 1-14 along with 375 mg/m(2) of intravenous rituximab on day 1 of a 21-day cycle, continuing until disease progression or unacceptable toxicity. Primary end point was objective response rate, with secondary end points of progression-free survival, time to progression, duration of response, safety, and tolerability. Median follow up was 25.6 months and median number of vorinostat cycles was 11.5. Overall response rate was 46% for all patients, 67% for previously untreated, and 41% for relapsed/refractory patients. Median progression-free survival was 29.2 months for all patients, 18.8 months for previously treated patients, and not reached for untreated patients. The regimen was well tolerated over long treatment periods with the most common grade 3/4 adverse events being asymptomatic thrombosis, neutropenia, thrombocytopenia, lymphopenia, and fatigue. The vorinostat/rituximab combination exhibits activity in indolent B-cell non-Hodgkin lymphoma with an acceptable safety profile and durable responses. Re-treatment was effective in 2 of 3 relapsing responders. This phase II clinical trial was registered at clinicaltrials.gov identifier: 00720876.

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          Author and article information

          Journal
          Haematologica
          Haematologica
          Ferrata Storti Foundation (Haematologica)
          1592-8721
          0390-6078
          Mar 2015
          : 100
          : 3
          Affiliations
          [1 ] Department of Hematology and Hematopoietic Cell Transplant, City of Hope, Duarte, CA, USA rchen@coh.org.
          [2 ] Department of Biostatistics, City of Hope, Duarte, CA, USA.
          [3 ] Department of Hematology and Hematopoietic Cell Transplant, City of Hope, Duarte, CA, USA.
          [4 ] Department of Radiology, City of Hope, Duarte, CA, USA.
          Article
          haematol.2014.117473
          10.3324/haematol.2014.117473
          4349274
          25596263
          7a98b576-b5a9-4f4c-8a77-975677ffc58f
          History

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