Impact of adherence to ibrutinib on clinical outcomes in real-world patients with chronic lymphocytic leukemia Journal Article


Authors: Collins, J. 4th; Stump, S. E.; Heiling, H.; Muir, M.; Deal, A.; Proco, D.; Nguyen, C.; Cozad, M.; Mato, A.; Coombs, C. C.; Muluneh, B.
Article Title: Impact of adherence to ibrutinib on clinical outcomes in real-world patients with chronic lymphocytic leukemia
Abstract: Ibrutinib is an oral Bruton’s tyrosine kinase inhibitor approved for treatment of chronic lymphocytic leukemia (CLL) and small lymphocytic lymphoma (SLL). Clinical trial data suggest that strict adherence is directly related to clinical outcomes. This retrospective, multicenter study aimed to evaluate ibrutinib adherence and its impact on clinical outcomes in patients with CLL/SLL treated in the real-world setting. The primary outcome was to quantify ibrutinib adherence rates in the real-world setting using the proportion of days covered (PDC) calculation. Secondary outcomes included the association of ibrutinib adherence with progression-free survival (PFS) and overall survival (OS). For the 100 patients in the primary analysis, the mean PDC was 95% (range: 65–100%). Patients who maintained PDC > 95% for each of the first 6 months experienced fewer PFS events (n = 1) compared to those with PDC ≤ 95% (n = 5; p=.03). The correlation between adherence and OS was not assessed due to a low number of events. © 2022 Informa UK Limited, trading as Taylor & Francis Group.
Keywords: adherence; ibrutinib; real-world
Journal Title: Leukemia and Lymphoma
Volume: 63
Issue: 8
ISSN: 1042-8194
Publisher: Taylor & Francis Group  
Date Published: 2022-01-01
Start Page: 1823
End Page: 1830
Language: English
DOI: 10.1080/10428194.2022.2045597
PUBMED: 35249442
PROVIDER: scopus
DOI/URL:
Notes: Article -- Export Date: 2 September 2022 -- Source: Scopus
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  1. Anthony R Mato
    235 Mato
  2. Sarah E Stump
    12 Stump