Wang X, Cao J, Du W, Zhang W, Cao S. Response to gefitinib/crizotinib combination in a pulmonary sarcomatoid carcinoma patient harboring concurrent EGFR mutation and MET amplification.
Clin Case Rep 2021;
9:e04487. [PMID:
34322251 PMCID:
PMC8299264 DOI:
10.1002/ccr3.4487]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/06/2021] [Accepted: 05/18/2021] [Indexed: 11/24/2022] Open
Abstract
Pulmonary sarcomatoid carcinoma (PSC) is a rare subtype of non-small cell lung cancer (NSCLC) with an extremely poor prognosis making it a therapeutic challenge. However, the development of genetic variation molecular diagnosis and targeted agents has brought the treatment of such malignancies to the precision era. Co-existing mutations of EGFR and MET have been reported in NSCLC, but rarely found in PSC. We herein present a rare case of a 74-year-old female patient diagnosed with PSC, carrying an activating mutation in exon 21 L858R of EGFR and a concurrent MET amplification prior to treatment. Combined application of gefitinib and crizotinib, inhibitors targeting EGFR and MET, respectively, was prescribed. The patient experienced a partial response and was stable for 9.7 months off therapy. The observation stresses the importance of genetic testing and paves the way for combined targeted strategies in PSC.
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