TY - JOUR T1 - Immunohistochemical Comparison of Biomarker Expression in Biopsy and Surgical Specimens of Non-small Cell Lung Cancer JF - Anticancer Research JO - Anticancer Res SP - 2755 LP - 2761 VL - 34 IS - 6 AU - TAMIO OKIMOTO AU - YUKARI TSUBATA AU - AKIHISA SUTANI AU - HIROSHI FUCHITA AU - NAOYA KOBA AU - TAKAMASA HOTTA AU - MEGUMI HAMAGUCHI AU - KIYOTAKA MIURA AU - SHUNICHI HAMAGUCHI AU - MIKI OHE AU - TAKASHIGE KURAKI AU - YUJI HARADA AU - RIRUKE MARUYAMA AU - NOBUHIRO MIYAMOTO AU - KOJI KISHIMOTO AU - TAKESHI ISOBE Y1 - 2014/06/01 UR - http://ar.iiarjournals.org/content/34/6/2755.abstract N2 - Background: Single tumors may show heterogeneity, and it is unclear whether biomarker expression in surgical and diagnostic biopsy samples correlates. Materials and Methods: We retrospectively identified lung cancer patients who were diagnosed by biopsy and underwent surgery between January 2007 and October 2010 at the Shimane University Hospital, Shimane, Japan. Thirty-two patients were identified. The expression of four predictive biomarkers was assessed, namely excision repair cross-complementing gene 1 (ERCC1), ribonucleotide diphosphate reductase M1 (RRM1), thymidylate synthase (TS), and class III beta-tubulin (BT). We also compared immunohistochemical staining in diagnostic biopsy and corresponding resected surgical samples. Results: Moderate correlation was seen between the expression of ERCC1, RRM1, TS, and BT in the biopsy and surgical specimens, with r values of 0.512 (p=0.003), 0.411 (p=0.020), 0.475 (p=0.006), and 0.404 (p=0.027), respectively. Conclusion: Assessment of biopsy samples with immunohistochemical staining is a feasible and reliable method for use in clinical decision making. ER -