PMID- 23997528 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20130902 LR - 20211021 IS - 1000-9604 (Print) IS - 1993-0631 (Electronic) IS - 1000-9604 (Linking) VI - 25 IP - 4 DP - 2013 Aug TI - PIK3CA mutation in Chinese patients with lung squamous cell carcinoma. PG - 416-22 LID - 10.3978/j.issn.1000-9604.2013.08.03 [doi] AB - OBJECTIVE: To investigate PIK3CA mutation in Chinese patients with lung squamous cell carcinoma (LSCC) and explore their relationship with clinicopathological profiles. METHODS: Tumor samples from 123 cases of LSCC were included in this study. PIK3CA mutations in exon 9 and 20 were screened by pyrosequencing and confirmed by clone sequencing or amplification refractory mutation system (ARMS). Denaturing performance liquid chromatography (DHPLC) was employed for evaluation of EGFR mutation in exon 19, 21 and KRAS mutation. RESULTS: PIK3CA mutations were found in 3 (2.4%) patients. The mutation type included E545K, E452Q and H1047R. Of these three patients, one coupled with EGFR mutation, and the other two coupled with PIK3CA amplification. All the three patients shared the same clinicopathologic characteristics: male, less than 60 years old, had smoke history, stage III and carried wild-type KRAS. CONCLUSIONS: The frequency of PIK3CA mutation is low in Chinese patients with LSCC. The mutational status of PIK3CA is not mutually exclusive to EGFR mutation. FAU - Yu, Jinglin AU - Yu J AD - Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Medical Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China. FAU - Bai, Hua AU - Bai H FAU - Wang, Zhijie AU - Wang Z FAU - Wei, Zhigang AU - Wei Z FAU - Ding, Xiaosheng AU - Ding X FAU - Duan, Jianchun AU - Duan J FAU - Yang, Lu AU - Yang L FAU - Wu, Meina AU - Wu M FAU - Wang, Yuyan AU - Wang Y FAU - Wang, Jie AU - Wang J LA - eng PT - Journal Article PL - China TA - Chin J Cancer Res JT - Chinese journal of cancer research = Chung-kuo yen cheng yen chiu JID - 9315242 PMC - PMC3752364 OTO - NOTNLM OT - EGFR mutation OT - KRAS mutation OT - Lung squamous cell carcinoma (LSCC) OT - PIK3CA mutation EDAT- 2013/09/03 06:00 MHDA- 2013/09/03 06:01 PMCR- 2013/08/01 CRDT- 2013/09/03 06:00 PHST- 2012/07/02 00:00 [received] PHST- 2013/08/02 00:00 [accepted] PHST- 2013/09/03 06:00 [entrez] PHST- 2013/09/03 06:00 [pubmed] PHST- 2013/09/03 06:01 [medline] PHST- 2013/08/01 00:00 [pmc-release] AID - cjcr-25-04-416 [pii] AID - 10.3978/j.issn.1000-9604.2013.08.03 [doi] PST - ppublish SO - Chin J Cancer Res. 2013 Aug;25(4):416-22. doi: 10.3978/j.issn.1000-9604.2013.08.03.