Ofatumumab Versus Rituximab Salvage Chemoimmunotherapy in Relapsed or Refractory Diffuse Large B-Cell Lymphoma: The ORCHARRD Study

Gustaaf W. van Imhoff*, Andrew McMillan, Matthew J. Matasar, John Radford, Kirit M. Ardeshna, Kazimierz Kuliczkowski, WonSeog Kim, Xiaonan Hong, Jette Soenderskov Goerloev, Andrew Davies, Maria Dolores Caballero Barrigon, Michinori Ogura, Sirpa Leppa, Michael Fennessy, Qiming Liao, Bronno van der Holt, Steen Lisby, Anton Hagenbeek

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    183 Citations (Scopus)

    Abstract

    Purpose

    We compared the efficacy of ofatumumab (O) versus rituximab (R) in combination with cisplatin, cytarabine, and dexamethasone (DHAP) salvage treatment, followed by autologous stem-cell transplantation (ASCT) in patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL).

    Patients and Methods

    Patients with CD201 DLBCL age >= 18 years who had experienced their first relapse or who were refractory to first-line R-CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone)-like treatment were randomly assigned between three cycles of R-DHAP or O-DHAP. Either O 1,000 mg or R 375 mg/m2 was administered for a total of four infusions (days 1 and 8 of cycle 1; day 1 of cycles 2 and 3 of DHAP). Patients who experienced a response after two cycles of treatment received the third cycle, followed by high-dose therapy and ASCT. Primary end point was progression-free survival (PFS), with failure to achieve a response after cycle 2 included as an event.

    Results

    Between March 2010 and December 2013, 447 patients were randomly assigned. Median age was 57 years (range, 18 to 83 years); 17% were age >= 65 years; 63% had stage III and IV disease; 71% did not achieve complete response (CR) or experience response for, 1 year on first-line R-CHOP. Response rate for O-DHAP was 38% (CR, 15%) versus 42% (CR, 22%) for R-DHAP. ASCT on protocol was completed by 74 patients (33%) in the O arm and 83 patients (37%) in the R arm. PFS, event-free survival, and overall survival were not significantly different between O-DHAP versus R-DHAP: PFS at 2 years was 24% versus 26% (hazard ratio [HR], 1.12; 95% CI, 0.89 to 1.42; P = .33); event-free survival at 2 years was 16% versus 18% (HR, 1.10; P=.35); and overall survival at 2 years was 41% versus 38% (HR, 0.90; P=.38). Positron emission tomography negativity before ASCT was highly predictive for superior outcome.

    Conclusion

    No difference in efficacy was found between O-DHAP and R-DHAP as salvage treatment of relapsed or refractory DLBCL. (C) 2016 by American Society of Clinical Oncology

    Original languageEnglish
    Pages (from-to)544-551
    Number of pages8
    JournalJournal of clinical oncology : official journal of the American Society of Clinical Oncology
    Volume35
    Issue number5
    DOIs
    Publication statusPublished - 10-Feb-2017

    Keywords

    • MONOCLONAL ANTI-CD20 ANTIBODY
    • CHEMOTHERAPY PLUS RITUXIMAB
    • RANDOMIZED CONTROLLED-TRIAL
    • ELDERLY-PATIENTS
    • RESPONSE CRITERIA
    • PROGNOSTIC VALUE
    • TRANSPLANTATION
    • CHOP
    • THERAPY
    • COMBINATION

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