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Ibrutinib versus Ofatumumab in Previously Treated Chronic Lymphoid Leukemia

Open access
Byrd, John C., Brown, Jennifer R., O'Brien, Susan, Barrientos, Jacqueline C., Kay, Neil E., Reddy, Nishitha M., Coutre, Steven, Tam, Constantine S., Mulligan, Stephen P., Jaeger, Ulrich, Devereux, Steve, Barr, Paul M., Furman, Richard R., Kipps, Thomas J., Cymbalista, Florence, Pocock, Christopher, Thornton, Patrick, Caligaris-Cappio, Federico, Robak, Tadeusz, Delgado, Julio, Schuster, Stephen J., Montillo, Marco, Schuh, Anna, de Vos, Sven, Gill, Devinder, Bloor, Adrian, Dearden, Claire, Moreno, Carol, Jones, Jeffrey J., Chu, Alvina D., Fardis, Maria, McGreivy, Jesse, Clow, Fong, James, Danelle F., Hillmen, Peter·2014·New England Journal of Medicine

Abstract

BACKGROUND: In patients with chronic lymphoid leukemia (CLL) or small lymphocytic lymphoma (SLL), a short duration of response to therapy or adverse cytogenetic abnormalities are associated with a poor outcome. We evaluated the efficacy of ibrutinib, a covalent inhibitor of Bruton's tyrosine kinase, in patients at risk for a poor outcome. METHODS: In this multicenter, open-label, phase 3 study, we randomly assigned 391 patients with relapsed or refractory CLL or SLL to receive daily ibrutinib or the anti-CD20 antibody ofatumumab. The primary end point was the duration of progression-free survival, with the duration of overall survival and the overall response rate as secondary end points. RESULTS: At a median follow-up of 9.4 months, ibrutinib significantly improved progression-free survival; the median duration was not reached in the ibrutinib group (with a rate of progression-free survival of 88% at 6 months), as compared with a median of 8.1 months in the ofatumumab group (hazard ratio for progression or death in the ibrutinib group, 0.22; P<0.001). Ibrutinib also significantly improved overall survival (hazard ratio for death, 0.43; P=0.005). At 12 months, the overall survival rate was 90% in the ibrutinib group and 81% in the ofatumumab group. The overall response rate was significantly higher in the ibrutinib group than in the ofatumumab group (42.6% vs. 4.1%, P<0.001). An additional 20% of ibrutinib-treated patients had a partial response with lymphocytosis. Similar effects were observed regardless of whether patients had a chromosome 17p13.1 deletion or resistance to purine analogues. The most frequent nonhematologic adverse events were diarrhea, fatigue, pyrexia, and nausea in the ibrutinib group and fatigue, infusion-related reactions, and cough in the ofatumumab group. CONCLUSIONS: Ibrutinib, as compared with ofatumumab, significantly improved progression-free survival, overall survival, and response rate among patients with previously treated CLL or SLL. (Funded by Pharmacyclics and Janssen; RESONATE ClinicalTrials.gov number, NCT01578707.).

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Metadata

Authors
Byrd, J. C., Brown, J. R., O'Brien, S., Barrientos, J. C., Kay, N. E., Reddy, N. M., Coutre, S., Tam, C. S., Mulligan, S. P., Jaeger, U., Devereux, S., Barr, P. M., Furman, R. R., Kipps, T. J., Cymbalista, F., Pocock, C., Thornton, P., Caligaris-Cappio, F., Robak, T., Delgado, J., Schuster, S. J., Montillo, M., Schuh, A., de Vos, S., Gill, D., Bloor, A., Dearden, C., Moreno, C., Jones, J. J., Chu, A. D., Fardis, M., McGreivy, J., Clow, F., James, D. F., & Hillmen, P.
Venue
New England Journal of Medicine
Published
2014-07-17
Volume
371
Issue
3
Pages
213-223
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2108206643
Cited by
1,639
References
21
FWCI
91.53
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Ibrutinib versus Ofatumumab in Previously Treated Chronic Lymphoid Leukemia. https://app.cochat.ai/papers/10.1056/nejmoa1400376
The paper
Byrd, J. C., Brown, J. R., O'Brien, S., Barrientos, J. C., Kay, N. E., Reddy, N. M., Coutre, S., Tam, C. S., Mulligan, S. P., Jaeger, U., Devereux, S., Barr, P. M., Furman, R. R., Kipps, T. J., Cymbalista, F., Pocock, C., Thornton, P., Caligaris-Cappio, F., Robak, T., . . . Hillmen, P. (2014). Ibrutinib versus Ofatumumab in Previously Treated Chronic Lymphoid Leukemia. New England Journal of Medicine. https://doi.org/10.1056/nejmoa1400376

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.