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Ref Type Journal Article
PMID (33380260)
Authors Meng Z, Li T, Wang P, Lizaso A, Huang D
Title The efficacy of lorlatinib in a lung adenocarcinoma patient with a novel ALK G1202L mutation: a case report.
URL
Abstract Text Acquired mutations in anaplastic lymphoma kinase (ALK) gene have been implicated as the major resistance mechanism to ALK inhibitors; however, information on the treatment options after acquiring novel ALK secondary mutations is limited. Herein, we report the efficacy of lorlatinib upon the detection of a novel ALK G1202L after progression on brigatinib. Our patient was a 30-year-old man with ALK-rearranged advanced lung adenocarcinoma. He had a partial clinical response to crizotinib lasting 11 months. Brigatinib was then administered for 12.8 months with stable disease as the best response. Sequencing at progression revealed the retention of EML4-ALK fusion and the emergence of a novel ALK G1202L mutation. With no standard treatment available, lorlatinib was administered, which achieved disease control for 9 months. Our report reveals the efficacy of lorlatinib in targeting ALK G1202L and can serve as an option for the clinical management of patients with ALK-rearranged lung adenocarcinoma after acquiring G1202L-mediated resistance from prior ALK inhibitor therapy. Furthermore, we also demonstrate the sequential use of crizotinib, brigatinib, and lorlatinib in a patient with advanced ALK-rearranged lung adenocarcinoma with an overall progression-free survival of 33.3 months for the sequential ALK inhibitor regimens. His overall survival was 41.5 months inclusive of all regimens.

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