Crizotinib therapy for advanced lung adenocarcinoma and a ROS1 rearrangement: Results from the EUROS1 cohort

Julien Mazières*, Damien Rouvière, Julie D.Milia, Thomas Filleron, Gérard Zalcman, Pamela Biondani, Benjamin Besse, Fabrice Barlesi, Hervé Léna, Isabelle Monnet, Luc Thiberville, Nicolas Pecuchet, Lucio Crinò, Federico Cappuzzo, Anne Marie C. Dingemans, Egbert F. Smit Sacha I Rothschild, Christian Spirig, Joachim Diebold, Oliver Gautschi, Rafal DziadziuszkoJurgen Wolf, Roman K. Thomas, Frauke Leenders, Johannes M. Heuckmann

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

336 Citations (Scopus)

Abstract

Purpose
Approximately 1% of lung adenocarcinomas are driven by oncogenic ROS1 rearrangement. Crizotinib is a potent inhibitor of both ROS1 and ALK kinase domains.

Patients and Methods
In the absence of a prospective clinical trial in Europe, we conducted a retrospective study in centers that tested for ROS1 rearrangement. Eligible patients had stage IV lung adenocarcinoma, had ROS1 rearrangement according to fluorescent in situ hybridization, and had received crizotinib therapy through an individual off-label use. Best response was assessed locally using RECIST (version 1.1). All other data were analyzed centrally.

Results
We identified 32 eligible patients. One patient was excluded because next-generation sequencing was negative for ROS1 fusion. Median age was 50.5 years, 64.5% of patients were women, and 67.7% were never-smokers. Thirty patients were evaluable for progressionfree survival (PFS), and 29 patients were evaluable for best response. We observed four patients with disease progression, two patients with stable disease, and objective response in 24 patients, including five complete responses (overall response rate, 80%; disease control rate, 86.7%). Median PFS was 9.1 months, and the PFS rate at 12 months was 44%. No unexpected adverse effects were observed. Twenty-six patients received pemetrexed (either alone or in combination with platinum and either before or after crizotinib) and had a response rate of 57.7% and a median PFS of 7.2 months.

Conclusion
Crizotinib was highly active at treating lung cancer in patients with a ROS1 rearrangement, suggesting that patients with lung adenocarcinomas should be tested for ROS1. Prospective clinical trials with crizotinib and other ROS1 inhibitors are ongoing or planned.

Original languageEnglish
Pages (from-to)992-999
Number of pages8
JournalJournal of Clinical Oncology
Volume33
Issue number9
DOIs
Publication statusPublished - 20 Mar 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 by American Society of Clinical Oncology.

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