PMID- 28860823 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200929 IS - 1178-6930 (Print) IS - 1178-6930 (Electronic) IS - 1178-6930 (Linking) VI - 10 DP - 2017 TI - Survival significance of epidermal growth factor receptor tyrosine kinase inhibitors and current staging system for survival after recurrence in patients with completely resected lung adenocarcinoma. PG - 4135-4141 LID - 10.2147/OTT.S136569 [doi] AB - OBJECTIVE: We previously reported that the staging system and epidermal growth factor receptor (EGFR) mutation status are key factors for treatment strategy and predicting survival. However, the significance of these factors as predictors of overall survival (OS) and postoperative recurrence survival (PRS) has not been sufficiently elucidated. The objective here was to investigate EGFR mutation status and p-stage, which affect PRS and OS in patients with completely resected lung adenocarcinoma, using a different database. PATIENTS AND METHODS: We retrospectively reviewed 56 consecutive lung adenocarcinoma patients with disease recurrence in St. Marianna University Hospital between January 2010 and December 2014. RESULTS: EGFR mutants (M) were detected in 16/56 patients (29%). The patients with EGFR M had a better OS than those with EGFR wild-type (WT) status (5-year survival: 50.3% vs 43.1, P=0.133). There was no significant difference in the 3-year recurrence-free survival rate between patients with M and WT (6.3% vs 7.7%, P=0.656), and the patients with EGFR M had a significantly better 3-year PRS than those with WT (77.4% vs 51.7%, P=0.033). The 3-year PRS rate for patients with M/pathologic stage (p-stage) I-II (87.5%) was better than that for patients with M/p-stage III (60.0%), WT/p-stage I-II (52.7%), and WT/p-stage III (43.8%). There was a significant difference between patients with M/p-stage I and WT/p-stage I-II or WT/p-stage III (P=0.021 and 0.030, respectively). During the study period, of the 16 patients with mutants, 12 patients (75%) received EGFR-tyrosine kinase inhibitor (TKI) therapy and among the 40 patients with WT, no patient received EGFR-TKI therapy. Multivariate survival analysis showed that patients with EGFR-TKI therapy had a statistically significant association with favorable PRS (hazard ratio 0.271; 95% confidence interval 0.074-1.000; P=0.050). CONCLUSION: EGFR status and p-stage were found to be essential prognostic factors for estimating PRS using this database. The recurrent patients with EGFR M and EGFR-TKI therapy had a statistically significant association with favorable PRS. FAU - Saji, Hisashi AU - Saji H AD - Department of Chest Surgery, St Marianna University School of Medicine, Miyamae-ku, Kawasaki, Kanagawa, Japan. AD - Department of Thoracic Surgery, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan. FAU - Sakai, Hiroki AU - Sakai H AD - Department of Chest Surgery, St Marianna University School of Medicine, Miyamae-ku, Kawasaki, Kanagawa, Japan. FAU - Kimura, Hiroyuki AU - Kimura H AD - Department of Chest Surgery, St Marianna University School of Medicine, Miyamae-ku, Kawasaki, Kanagawa, Japan. FAU - Miyazawa, Tomoyuki AU - Miyazawa T AD - Department of Chest Surgery, St Marianna University School of Medicine, Miyamae-ku, Kawasaki, Kanagawa, Japan. FAU - Marushima, Hideki AU - Marushima H AD - Department of Chest Surgery, St Marianna University School of Medicine, Miyamae-ku, Kawasaki, Kanagawa, Japan. FAU - Nakamura, Haruhiko AU - Nakamura H AD - Department of Chest Surgery, St Marianna University School of Medicine, Miyamae-ku, Kawasaki, Kanagawa, Japan. LA - eng PT - Journal Article DEP - 20170821 PL - New Zealand TA - Onco Targets Ther JT - OncoTargets and therapy JID - 101514322 PMC - PMC5571845 OTO - NOTNLM OT - EGFR OT - lung adenocarcinoma OT - postoperative recurrence survival COIS- Disclosure The authors report no conflicts of interest in this work. EDAT- 2017/09/02 06:00 MHDA- 2017/09/02 06:01 PMCR- 2017/08/21 CRDT- 2017/09/02 06:00 PHST- 2017/09/02 06:00 [entrez] PHST- 2017/09/02 06:00 [pubmed] PHST- 2017/09/02 06:01 [medline] PHST- 2017/08/21 00:00 [pmc-release] AID - ott-10-4135 [pii] AID - 10.2147/OTT.S136569 [doi] PST - epublish SO - Onco Targets Ther. 2017 Aug 21;10:4135-4141. doi: 10.2147/OTT.S136569. eCollection 2017.