MET exon 14 skipping mutation, amplification and overexpression in pulmonary sarcomatoid carcinoma: A multi-center study

Autor: Xue-wen Liu, Xin-ru Chen, Yu-ming Rong, Ning Lyu, Chun-wei Xu, Fang Wang, Wen-yong Sun, San-gao Fang, Jing-ping Yuan, Hui-juan Wang, Wen-xian Wang, Wen-bin Huang, Jian-ping Xu, Zhen-ying Yue, Li-kun Chen
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Translational Oncology, Vol 13, Iss 12, Pp 100868- (2020)
Druh dokumentu: article
ISSN: 1936-5233
DOI: 10.1016/j.tranon.2020.100868
Popis: Background: High frequency of MNNG HOS transforming (MET) exon 14 skipping mutation (MET exon 14Δ) has been reported in pulmonary sarcomatoid carcinomas (PSCs). However, the frequencies differ greatly. Our study aims to investigate the frequency of MET alterations and the correlations among MET exon 14Δ, amplification, and protein overexpression in a large cohort of PSCs. MET exon 14Δ, amplification, and protein overexpression were detected in 124 surgically resected PSCs by using Sanger sequencing, fluorescent in situ hybridization (FISH), and immunohistochemistry (IHC) respectively. MET exon 14Δ was identified in 9 (7.3%) of 124 cases, including 6 pleomorphic carcinomas, 2 spindle cell carcinomas and 1 carcinosarcoma. MET amplification and protein overexpression were detected in 6 PSCs (4.8%) and 25 PSCs (20.2%), respectively. MET amplification was significantly associated with overexpression (P
Databáze: Directory of Open Access Journals