Daniel B Costa1, Alice T Shaw2, Sai-Hong I Ou2, Benjamin J Solomon2, Gregory J Riely2, Myung-Ju Ahn2, Caicun Zhou2, S Martin Shreeve2, Paulina Selaru2, Anna Polli2, Patrick Schnell2, Keith D Wilner2, Robin Wiltshire2, D Ross Camidge2, Lucio Crinò2. 1. Daniel B. Costa, Beth Israel Deaconess Medical Center, Harvard Medical School; Alice T. Shaw, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Sai-Hong I. Ou, Chao Family Comprehensive Cancer Center, University of California Irvine School of Medicine, Irvine; S. Martin Shreeve, Paulina Selaru, and Keith D. Wilner, Pfizer Oncology, La Jolla, CA; Benjamin J. Solomon, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Gregory J. Riely, Memorial Sloan-Kettering Cancer Center; Patrick Schnell, Pfizer Oncology, New York, NY; Myung-Ju Ahn, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea; Caicun Zhou, Shanghai Pulmonary Hospital, Shanghai, People's Republic of China; Anna Polli, Pfizer Oncology, Milan; Lucio Crinò, Perugia University Medical School, Perugia, Italy; Robin Wiltshire, Pfizer Oncology, Tadworth, United Kingdom; and D. Ross Camidge, University of Colorado Denver, Aurora, CO. dbcosta@bidmc.harvard.edu. 2. Daniel B. Costa, Beth Israel Deaconess Medical Center, Harvard Medical School; Alice T. Shaw, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Sai-Hong I. Ou, Chao Family Comprehensive Cancer Center, University of California Irvine School of Medicine, Irvine; S. Martin Shreeve, Paulina Selaru, and Keith D. Wilner, Pfizer Oncology, La Jolla, CA; Benjamin J. Solomon, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Gregory J. Riely, Memorial Sloan-Kettering Cancer Center; Patrick Schnell, Pfizer Oncology, New York, NY; Myung-Ju Ahn, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea; Caicun Zhou, Shanghai Pulmonary Hospital, Shanghai, People's Republic of China; Anna Polli, Pfizer Oncology, Milan; Lucio Crinò, Perugia University Medical School, Perugia, Italy; Robin Wiltshire, Pfizer Oncology, Tadworth, United Kingdom; and D. Ross Camidge, University of Colorado Denver, Aurora, CO.
Abstract
PURPOSE:Crizotinib is an oral kinase inhibitor approved for the treatment of ALK-rearranged non-small-cell lung cancer (NSCLC). The clinical benefits of crizotinib in patients with brain metastases have not been previously studied. PATIENTS AND METHODS: Patients with advanced ALK-rearranged NSCLC enrolled onto clinical trial PROFILE 1005 or 1007 (randomly assigned tocrizotinib) were included in this retrospective analysis. Patients with asymptomatic brain metastases (nontarget or target lesions) were allowed to enroll. Tumor assessments were evaluated every 6 weeks using RECIST (version 1.1). RESULTS: At baseline, 31% of patients (275 of 888) had asymptomatic brain metastases; 109 had received no prior and 166 had receivedprior brain radiotherapy as treatment. Among patients with previously untreated asymptomatic brain metastases, the systemic disease control rate (DCR) at 12 weeks was 63% (95% CI, 54% to 72%), the intracranial DCR was 56% (95% CI, 46% to 66%), and the median intracranial time to progression (TTP) was 7 months (95% CI, 6.7 to 16.4). Among patients with previously treated brain metastases, the systemic DCR was 65% (95% CI, 57% to 72%), the intracranial DCR was 62% (95% CI, 54% to 70%), and the median intracranial TTP was 13.2 months (95% CI, 9.9 to not reached). Patients with systemic disease control were also likely to experience intracranial disease control at 12 weeks (correlation coefficient, 0.7652; P < .001). Among patients without baseline brain metastases who developed progressive disease (n = 253) after initiation of crizotinib, 20% were diagnosed with brain metastases. CONCLUSION:Crizotinib was associated with systemic and intracranial disease control in patients with ALK-rearranged NSCLC who were ALK inhibitor naive and had brain metastases. However, progression of preexisting or development of new intracranial lesions while receiving therapy was a common manifestation of acquired resistance to crizotinib.
RCT Entities:
PURPOSE:Crizotinib is an oral kinase inhibitor approved for the treatment of ALK-rearranged non-small-cell lung cancer (NSCLC). The clinical benefits of crizotinib in patients with brain metastases have not been previously studied. PATIENTS AND METHODS: Patients with advanced ALK-rearranged NSCLC enrolled onto clinical trial PROFILE 1005 or 1007 (randomly assigned to crizotinib) were included in this retrospective analysis. Patients with asymptomatic brain metastases (nontarget or target lesions) were allowed to enroll. Tumor assessments were evaluated every 6 weeks using RECIST (version 1.1). RESULTS: At baseline, 31% of patients (275 of 888) had asymptomatic brain metastases; 109 had received no prior and 166 had received prior brain radiotherapy as treatment. Among patients with previously untreated asymptomatic brain metastases, the systemic disease control rate (DCR) at 12 weeks was 63% (95% CI, 54% to 72%), the intracranial DCR was 56% (95% CI, 46% to 66%), and the median intracranial time to progression (TTP) was 7 months (95% CI, 6.7 to 16.4). Among patients with previously treated brain metastases, the systemic DCR was 65% (95% CI, 57% to 72%), the intracranial DCR was 62% (95% CI, 54% to 70%), and the median intracranial TTP was 13.2 months (95% CI, 9.9 to not reached). Patients with systemic disease control were also likely to experience intracranial disease control at 12 weeks (correlation coefficient, 0.7652; P < .001). Among patients without baseline brain metastases who developed progressive disease (n = 253) after initiation of crizotinib, 20% were diagnosed with brain metastases. CONCLUSION:Crizotinib was associated with systemic and intracranial disease control in patients with ALK-rearranged NSCLC who were ALK inhibitor naive and had brain metastases. However, progression of preexisting or development of new intracranial lesions while receiving therapy was a common manifestation of acquired resistance to crizotinib.
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