PMID- 25327654 OWN - NLM STAT- MEDLINE DCOM- 20150411 LR - 20190221 IS - 0253-3766 (Print) IS - 0253-3766 (Linking) VI - 36 IP - 7 DP - 2014 Jul TI - [ALK protein expression and gene fusion in bronchoscopic specimens of lung adenocarcinoma]. PG - 501-4 AB - OBJECTIVE: To explore ALK protein expression and gene fusion in formalin-fixed and paraffin-embedded (FFPE) specimens obtained from lung cancer by bronchoscopy, and to investigate the relationship between ALK status and clinicopathological characteristics of the patients. METHODS: Seventy-four FFPE samples obtained from lung adenocarcinoma by bronchoscopy were tested for ALK protein expression and gene fusion respectively by immunohistochemistry (IHC) using Ventana D5F3 antibody and fluorescence in situ hybridization (FISH) using ALK break apart probe. RESULTS: sixty-five of the 74 samples were successfully tested by FISH (87.8%, 65/74) . There were 5 FISH-positive cases (7.7%, 5/65) , all with advanced stage carcinoma. Among these five FISH-positive cases, 3 were IHC-positive (4.1%, 3/74) and 2 IHC-negative cases. All the other 69 samples were IHC-negative, including nine FISH-uninformative samples (7 samples were less than 50 tumor cells and 2 samples with weak FISH signal). Both ALK IHC and FISH results were not correlated with age, sex, history of smoking, histological classification, differentiation and lymph node metastasis. CONCLUSIONS: Bronchoscopic specimens of lung cancer can be used to detect ALK expression and gene fusion. Immunohistochemistry in combination with FISH test may be more favorable for ALK test. FAU - Liang, Xiaolong AU - Liang X AD - Department of Pathology of Peking Union Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China. FAU - Wang, Mengzhao AU - Wang M FAU - Zhang, Jing AU - Zhang J FAU - Luo, Yufeng AU - Luo Y FAU - Zhang, Shuying AU - Zhang S FAU - Wu, Shafei AU - Wu S FAU - Liu, Yuanyuan AU - Liu Y FAU - Zeng, Xuan AU - Zeng X AD - Email: zengxuan88@yahoo.com. LA - chi PT - Journal Article PL - China TA - Zhonghua Zhong Liu Za Zhi JT - Zhonghua zhong liu za zhi [Chinese journal of oncology] JID - 7910681 RN - EC 2.7.10.1 (ALK protein, human) RN - EC 2.7.10.1 (Anaplastic Lymphoma Kinase) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) SB - IM MH - Adenocarcinoma/*metabolism MH - Adenocarcinoma of Lung MH - Anaplastic Lymphoma Kinase MH - Gene Fusion MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Lung Neoplasms/*metabolism MH - Receptor Protein-Tyrosine Kinases/*metabolism EDAT- 2014/10/21 06:00 MHDA- 2015/04/12 06:00 CRDT- 2014/10/21 06:00 PHST- 2014/10/21 06:00 [entrez] PHST- 2014/10/21 06:00 [pubmed] PHST- 2015/04/12 06:00 [medline] PST - ppublish SO - Zhonghua Zhong Liu Za Zhi. 2014 Jul;36(7):501-4.