PMID- 18448999 OWN - NLM STAT- MEDLINE DCOM- 20080703 LR - 20181201 IS - 1556-1380 (Electronic) IS - 1556-0864 (Linking) VI - 3 IP - 5 DP - 2008 May TI - Impact of HER2 gene and protein status on the treatment outcome of cisplatin-based chemoradiotherapy for locally advanced non-small cell lung cancer. PG - 477-82 LID - 10.1097/JTO.0b013e31816e2ea3 [doi] AB - BACKGROUND: It has not been fully evaluated whether both HER2 gene copy number and HER2 protein expression are related to the outcome of chemoradiotherapy in patients with locally advanced non-small cell lung cancer (LA-NSCLC). The aim of this study was to evaluate their relationships. METHODS: HER2 gene copy number determined by fluorescence in situ hybridization (FISH) and HER2 protein expression determined by immunohistochemistry (IHC) were assessed in 68 patients with LA-NSCLC enrolled in our previous phase II trials of concurrent cisplatin-based chemoradiotherapy, and a multivariate analysis was conducted for response and survival. RESULTS: HER2-IHC-positive tumors were detected in 23 patients (34%), and the median ratio of HER2 to chromosome 17 copy number was 0.93 (range, 0.55-2.00). The HER2-FISH results were marginally correlated with the IHC results (p = 0.0715). When the median ratio in the FISH analysis was used as a cut-off level for its positivity, there was no association between either HER2-FISH or IHC status and objective response to chemoradiotherapy. Contrary, a multivariate analysis revealed HER2-FISH result but not IHC result was an independent poor prognostic factor for both overall survival and progression-free survival (hazard ratio = 2.568, 95% confidence interval [CI] = 1.117-5.903, p = 0.0264 and hazard ratio = 2.283, 95% CI = 1.005-5.189, p = 0.0487, respectively). CONCLUSIONS: Patients with HER2 FISH-positive LA-NSCLC had a poorer outcome even when treated with cisplatin-based chemoradiotherapy, despite the strong need for validation assessment of these observations. Development of more effective treatment for these high-risk patients is needed to improve their poor prognosis. FAU - Kuyama, Shoichi AU - Kuyama S AD - Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan. FAU - Hotta, Katsuyuki AU - Hotta K FAU - Tabata, Masahiro AU - Tabata M FAU - Segawa, Yoshihiko AU - Segawa Y FAU - Fujiwara, Yoshiro AU - Fujiwara Y FAU - Takigawa, Nagio AU - Takigawa N FAU - Kiura, Katsuyuki AU - Kiura K FAU - Ueoka, Hiroshi AU - Ueoka H FAU - Eguchi, Kenji AU - Eguchi K FAU - Tanimoto, Mitsune AU - Tanimoto M LA - eng PT - Journal Article PL - United States TA - J Thorac Oncol JT - Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer JID - 101274235 RN - 0 (HER2(776-788)) RN - 0 (Peptide Fragments) RN - 0 (Taxoids) RN - 15H5577CQD (Docetaxel) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - Q20Q21Q62J (Cisplatin) SB - IM MH - Adult MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - Carcinoma, Non-Small-Cell Lung/*drug therapy/*genetics/*metabolism/radiotherapy MH - *Chromosomes, Human, Pair 17 MH - Cisplatin/*administration & dosage MH - Data Interpretation, Statistical MH - Docetaxel MH - Female MH - Gene Dosage MH - *Genes, erbB-2 MH - Humans MH - In Situ Hybridization, Fluorescence MH - Lung Neoplasms/*drug therapy/*genetics/*metabolism/radiotherapy MH - Male MH - Middle Aged MH - Peptide Fragments/*metabolism MH - Prognosis MH - Receptor, ErbB-2/*metabolism MH - Survival Rate MH - Taxoids/administration & dosage MH - Treatment Outcome EDAT- 2008/05/02 09:00 MHDA- 2008/07/04 09:00 CRDT- 2008/05/02 09:00 PHST- 2008/05/02 09:00 [pubmed] PHST- 2008/07/04 09:00 [medline] PHST- 2008/05/02 09:00 [entrez] AID - S1556-0864(15)31456-8 [pii] AID - 10.1097/JTO.0b013e31816e2ea3 [doi] PST - ppublish SO - J Thorac Oncol. 2008 May;3(5):477-82. doi: 10.1097/JTO.0b013e31816e2ea3.