PMID- 24393876 OWN - NLM STAT- MEDLINE DCOM- 20140310 LR - 20141120 IS - 0385-0684 (Print) IS - 0385-0684 (Linking) VI - 40 IP - 12 DP - 2013 Nov TI - [Clinical significance of the human epidermal growth factor receptor 2( HER2) in patients with recurrent gastric cancer who received S-1 adjuvant chemotherapy]. PG - 1647-9 AB - PURPOSE: The aim of this study was to clarify the human epidermal growth factor receptor 2( HER2) positivity, clinicopathological characteristics, and survival of patients with recurrent HER2-positive gastric cancer who received S-1 adjuvant chemotherapy. METHODS: Thirty-eight patients with recurrent gastric cancer who underwent curative D2 surgery and received S-1 adjuvant chemotherapy between June 2002 and December 2011 were examined. HER2 positivity was determined as defined in the ToGA study. RESULTS: The positivity score was assessed by immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) as follows: IHC 0 in 27 patients, IHC 1+in 4, IHC 2+/FISH-in 3, IHC 2+/FISH+in 1, and IHC 3+in 3. The HER2 positivity rate was 10.5% (4/38). HER2-positive recurrent gastric cancer was characterized by a differentiated histological feature and frequent blood vessel invasion. However, the recurrence and survival rates were not significantly different between the HER2-negative and HER2-positive tumors. CONCLUSIONS: The HER2 positivity rate after S-1 adjuvant chemotherapy did not differ significantly between patients with recurrent gastric cancer and those with primary Stage II/III gastric cancer, suggesting that S-1 adjuvant chemotherapy was equally effective, regardless of HER2 status. FAU - Aoyama, Toru AU - Aoyama T AD - Dept. of Gastrointestinal Surgery, Kanagawa Cancer Center. FAU - Hayashi, Tsutomu AU - Hayashi T FAU - Fujikawa, Hirohito AU - Fujikawa H FAU - Ogata, Takashi AU - Ogata T FAU - Cho, Haruhiko AU - Cho H FAU - Wada, Hiroo AU - Wada H FAU - Kitani, Yuichi AU - Kitani Y FAU - Yukawa, Norio AU - Yukawa N FAU - Oshima, Takashi AU - Oshima T FAU - Rino, Yasushi AU - Rino Y FAU - Ozawa, Yukihiro AU - Ozawa Y FAU - Masuda, Munetaka AU - Masuda M FAU - Yoshikawa, Takaki AU - Yoshikawa T LA - jpn PT - English Abstract PT - Journal Article PL - Japan TA - Gan To Kagaku Ryoho JT - Gan to kagaku ryoho. Cancer & chemotherapy JID - 7810034 RN - 0 (Antimetabolites, Antineoplastic) RN - 0 (Drug Combinations) RN - 150863-82-4 (S 1 (combination)) RN - 1548R74NSZ (Tegafur) RN - 5VT6420TIG (Oxonic Acid) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antimetabolites, Antineoplastic/*therapeutic use MH - Chemotherapy, Adjuvant MH - Drug Combinations MH - Female MH - Humans MH - Male MH - Middle Aged MH - Neoplasm Staging MH - Oxonic Acid/*therapeutic use MH - Receptor, ErbB-2/*analysis MH - Recurrence MH - Stomach Neoplasms/chemistry/*drug therapy/pathology/surgery MH - Tegafur/*therapeutic use EDAT- 2014/01/08 06:00 MHDA- 2014/03/13 06:00 CRDT- 2014/01/08 06:00 PHST- 2014/01/08 06:00 [entrez] PHST- 2014/01/08 06:00 [pubmed] PHST- 2014/03/13 06:00 [medline] PST - ppublish SO - Gan To Kagaku Ryoho. 2013 Nov;40(12):1647-9.