• Wolfgang Hiddemann, Anna Maria Barbui, Miguel A Canales, Paul K Cannell, Graham P Collins, Jan Dürig, Roswitha Forstpointner, Michael Herold, Mark Hertzberg, Magdalena Klanova, John Radford, John F Seymour, Kensei Tobinai, Judith Trotman, Alis Burciu, Günter Fingerle-Rowson, Marcel Wolbers, Tina Nielsen, and Robert E Marcus.
• Wolfgang Hiddemann and Roswitha Forstpointner, University Hospital, Ludwig Maximilian University Munich, Munich; Jan Dürig, University Hospital Essen, Essen; Michael Herold, HELIOS-Klinikum Erfurt, Erfurt, Germany; Anna Maria Barbui, Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy; Miguel A. Canales, Hospital Universitario la Paz, Madrid, Spain; Paul K. Cannell, Fiona Stanley Hospital, Murdoch, Western Australia; Mark Hertzberg, Prince of Wales Hospital; Judith Trotman, Concord Repatriation General Hospital, University of Sydney, Sydney, New South Wales; John F. Seymour, Royal Melbourne Hospital, and University of Melbourne, Melbourne, Victoria, Australia; Graham P. Collins, Churchill Hospital, Oxford; John Radford, University of Manchester and the Christie National Health Service Foundation Trust, Manchester Academic Health Science Centre, Manchester; Robert E. Marcus, Kings College Hospital, London, United Kingdom; Magdalena Klanova, Charles University General Hospital, Prague, Czech Republic; Magdalena Klanova, Alis Burciu, Günter Fingerle-Rowson, Marcel Wolbers, and Tina Nielsen, F. Hoffmann-La Roche, Basel, Switzerland; and Kensei Tobinai, National Cancer Center Hospital, Tokyo, Japan.
• J. Clin. Oncol. 2018 Aug 10; 36 (23): 2395-2404.

AbstractPurpose The GALLIUM study ( ClinicalTrials.gov identifier: NCT01332968) showed that obinutuzumab (GA101; G) significantly prolonged progression-free survival (PFS) in previously untreated patients with follicular lymphoma relative to rituximab (R) when combined with cyclophosphamide (C), doxorubicin, vincristine (V), and prednisone (P; CHOP); CVP; or bendamustine. This report focuses on the impact of chemotherapy backbone on efficacy and safety. Patients and Methods A total of 1,202 patients with previously untreated follicular lymphoma (grades 1 to 3a), advanced disease (stage III or IV, or stage II with tumor diameter ≥ 7 cm), Eastern Cooperative Oncology Group performance status 0 to 2, and requiring treatment were randomly assigned 1:1 to G 1,000 mg on days 1, 8, and 15 of cycle 1 and day 1 of subsequent cycles or R 375 mg/m2 on day 1 of each cycle, for six to eight cycles, depending on chemotherapy (allocated nonrandomly by center). Responding patients received G or R for 2 years or until disease progression. Results Baseline Follicular Lymphoma International Prognostic Index risk, bulky disease, and comorbidities differed by chemotherapy. After 41.1 months median follow-up, PFS (primary end point) was superior for G plus chemotherapy (overall hazard ratio [HR], 0.68; 95% CI, 0.54 to 0.87; P = .0016), with consistent results across chemotherapy backbones (bendamustine: HR, 0.63; 95% CI, 0.46 to 0.88; CHOP: HR, 0.72; 95% CI, 0.48 to 1.10; CVP: HR, 0.79; 95% CI, 0.42 to 1.47). Grade 3 to 5 adverse events, notably cytopenias, were most frequent with CHOP. Grade 3 to 5 infections and second neoplasms were most frequent with bendamustine, which was associated with marked and prolonged reductions in T-cell counts. Fatal events were more frequent in patients treated with bendamustine, possibly reflecting differences in patient risk profiles. Conclusion Improved PFS was observed for G plus chemotherapy for all three chemotherapy backbones. Safety profiles differed, although comparisons are confounded by nonrandom chemotherapy allocation.

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