Prognostic Factors for Complete Response to Ibrutinib in Patients With Chronic Lymphocytic Leukemia: A Pooled Analysis of 2 Clinical Trials

JAMA Oncology
Susan M O'BrienSteven E Coutre

Abstract

Ibrutinib, a first-in-class Bruton tyrosine kinase inhibitor taken once daily, is approved in the United States for patients with chronic lymphocytic leukemia/small lymphocytic lymphoma and allows for treatment without chemotherapy. Extended treatment with ibrutinib has demonstrated increased complete response (CR) rates over time. To analyze baseline factors that predict CR in patients with chronic lymphocytic leukemia/small lymphocytic lymphoma treated with ibrutinib. Univariate and multivariate analyses of pooled data from 2 clinical trials were used to assess the prognostic value of baseline factors associated with CR in 327 patients from the PCYC-1102 and PCYC-1112 studies treated with single-agent ibrutinib. Participants were followed up in academic and community medical centers in the United States, the United Kingdom, Australia, France, Italy, Ireland, Poland, Spain, and Austria. Odds ratio (OR) of CR rate. The 327 patients included in this analysis had a median age of 67 years (range, 30-86 years) and 227 (69.4%) were male. At baseline, 185 patients (56.6%) had bulky disease (lymph node ≥5 cm), 184 (56.3%) had advanced-stage disease, and 182 (55.7%) had an Eastern Cooperative Oncology Group performance status of 1 or h...Continue Reading

Citations

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