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A rare epidermal growth factor receptor (EGFR) gene mutation in small cell lung carcinoma patients

CC. Hwang, TY. Hsieh, KY. Yeh, TP. Chen, CC. Hua, LC. Chang, JR. Chen

. 2022 ; 166 (3) : 274-279. [pub] 20220218

Jazyk angličtina Země Česko

Typ dokumentu kazuistiky, časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc22022907

AIM: Activating mutations in the epidermal growth factor receptor (EGFR) are predominantly detected in pulmonary adenocarcinoma and have been reported in small cell lung cancer (SCLC) for decades. This retrospective single-center study aimed to determine the frequency and types of EGFR mutations in SCLC in Taiwan. METHODS: This study comprises a consecutive cohort of 161 patients histologically diagnosed with SCLC between January 1992 and August 2014 at the Department of Pathology in Keelung Chang Gung Memorial Hospital, Taiwan. Archived formalin-fixed paraffin-embedded sections from 71 patients were eligible for molecular analysis. EGFR mutation analysis was performed using a fully-automated IdyllaTM EGFR Mutation Test and confirmed a comparable result through Qiagen Therascreen® EGFR RGQ PCR. In addition, EGFR gene copy number was assessed in EGFR-mutated tumors by fluorescence in situ hybridization (FISH). RESULTS: Mutational status of the EGFR gene was successfully analyzed in 63 specimens by both IdyllaTM and Qiagen platforms. Both methods detected L858R point mutation in exon 21 in an 81-year-old female and a 47-year-old male non-smoker. Both tumors show no concurrent EGFR gene amplification. The overall agreement between results obtained with the IdyllaTM EGFR Mutation Test and Qiagen Therascreen® EGFR RGQ PCR was 100% Conclusions. Our results showed that EGFR mutation is a rare mutation type in a consecutive series of de novo SCLC. Furthermore, the performance of IdyllaTM EGFR Mutation Test and Qiagen Therascreen® EGFR RGQ PCR on archived paraffin sections of limited quantities is available with the high agreement of results.

Citace poskytuje Crossref.org

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