Predictive factors and outcomes for ibrutinib in relapsed/refractory marginal zone lymphoma: a multicenter cohort study

Narendranath Epperla, Qiuhong Zhao, Sayan Mullick Chowdhury, Lauren Shea, Tamara K. Moyo, Nishitha Reddy, Julia Sheets, David M. Weiner, Praveen Ramakrishnan Geethakumari, Malathi Kandarpa, Ximena Jordan Bruno, Colin Thomas, Michael C. Churnetski, Andrew Hsu, Luke Zurbriggen, Cherie Tan, Kathryn Lindsey, Joseph Maakaron, Paolo F. Caimi, Pallawi TorkaCeleste Bello, Sabarish Ayyappan, Reem Karmali, Seo Hyun Kim, Anna Kress, Shalin Kothari, Yazeed Sawalha, Beth Christian, Kevin A. David, Irl Brian Greenwell, Murali Janakiram, Vaishalee P. Kenkre, Adam J. Olszewski, Jonathon B. Cohen, Neil Palmisiano, Elvira Umyarova, Ryan A. Wilcox, Farrukh T. Awan, Juan Pablo Alderuccio, Stefan K. Barta, Natalie S. Grover, Nilanjan Ghosh, Nancy L. Bartlett, Alex F. Herrera, Geoffrey Shouse

Research output: Contribution to journalLetterpeer-review

Abstract

Ibrutinib is effective in the treatment of relapsed/refractory (R/R) marginal zone lymphoma (MZL) with an overall response rate (ORR) of 48%. However, factors associated with response (or lack thereof) to ibrutinib in R/R MZL in clinical practice are largely unknown. To answer this question, we performed a multicenter (25 US centers) cohort study and divided the study population into three groups: “ibrutinib responders”—patients who achieved complete or partial response (CR/PR) to ibrutinib; “stable disease (SD)”; and “primary progressors (PP)”—patients with progression of disease as their best response to ibrutinib. One hundred and nineteen patients met the eligibility criteria with 58%/17% ORR/CR, 29% with SD, and 13% with PP. The median PFS and OS were 29 and 71.4 months, respectively, with no difference in PFS or OS based on the ibrutinib line of therapy or type of therapy before ibrutinib. Patients with complex cytogenetics had an inferior PFS (HR = 3.08, 95% CI 1.23–7.67, p = 0.02), while those with both complex cytogenetics (HR = 3.00, 95% CI 1.03–8.68, p = 0.04) and PP (HR = 13.94, 95% CI 5.17–37.62, p < 0.001) had inferior OS. Only primary refractory disease to first-line therapy predicted a higher probability of PP to ibrutinib (RR = 3.77, 95% CI 1.15–12.33, p = 0.03). In this largest study to date evaluating outcomes of R/R MZL treated with ibrutinib, we show that patients with primary refractory disease and those with PP on ibrutinib are very high-risk subsets and need to be prioritized for experimental therapies.

Original languageEnglish (US)
Article number96
JournalJournal of Hematology and Oncology
Volume15
Issue number1
DOIs
StatePublished - Dec 2022
Externally publishedYes

Keywords

  • Ibrutinib
  • Marginal zone lymphoma
  • MZL
  • Refractory
  • Relapsed

ASJC Scopus subject areas

  • Molecular Biology
  • Hematology
  • Oncology
  • Cancer Research

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