PURPOSE: The predictive value of excision repair cross-complementation group 1 (ERCC1) gene for survival and response to platinum-based chemotherapy in gastric cancer (GC) remains controversial. We performed a meta-analysis to clarify the precise estimation of the prognostic and predictive effect of ERCC1. METHODS: A systematic literature search was conducted using PubMed, ScienceDirect, Wiley and American Society of Clinical Oncology (ASCO) before March 2014. Studies analyzing survival data and/or chemotherapy response in GC by ERCC1 status were identified. The principal outcome measures were hazard ratios (HRs) for survival and relative risks (RRs) for chemotherapy response. Pooled HRs and RRs were calculated using fixed- or random-effects models according to the heterogeneity. RESULTS: Twenty-one studies involving 1,628 patients met our inclusion criteria. High ERCC1 expression was significantly associated with shorter overall survival (OS) and lower response to chemotherapy in advanced GC patients receiving palliative chemotherapy (HR 1.83; 95 % CI 1.45-2.31; P < 0.001; RR 0.49; 95 % CI 0.38-0.62; P < 0.001). There was no significant difference in survival between high and low ERCC1 expression in adjuvant setting (OS: HR 1.38; 95 % CI 0.77-2.45; P = 0.276; EFS 0.72; 95 % CI 0.38-1.33; P = 0.291). Some evidence of heterogeneity and possible publication bias were discovered in few meta-analyses. CONCLUSIONS: High ERCC1 expression might be an adverse prognostic and a drug-resistance predictive factor for advanced GC patients. However, further studies with consistent ERCC1 assessment methodology are needed.
PURPOSE: The predictive value of excision repair cross-complementation group 1 (ERCC1) gene for survival and response to platinum-based chemotherapy in gastric cancer (GC) remains controversial. We performed a meta-analysis to clarify the precise estimation of the prognostic and predictive effect of ERCC1. METHODS: A systematic literature search was conducted using PubMed, ScienceDirect, Wiley and American Society of Clinical Oncology (ASCO) before March 2014. Studies analyzing survival data and/or chemotherapy response in GC by ERCC1 status were identified. The principal outcome measures were hazard ratios (HRs) for survival and relative risks (RRs) for chemotherapy response. Pooled HRs and RRs were calculated using fixed- or random-effects models according to the heterogeneity. RESULTS: Twenty-one studies involving 1,628 patients met our inclusion criteria. High ERCC1 expression was significantly associated with shorter overall survival (OS) and lower response to chemotherapy in advanced GC patients receiving palliative chemotherapy (HR 1.83; 95 % CI 1.45-2.31; P < 0.001; RR 0.49; 95 % CI 0.38-0.62; P < 0.001). There was no significant difference in survival between high and low ERCC1 expression in adjuvant setting (OS: HR 1.38; 95 % CI 0.77-2.45; P = 0.276; EFS 0.72; 95 % CI 0.38-1.33; P = 0.291). Some evidence of heterogeneity and possible publication bias were discovered in few meta-analyses. CONCLUSIONS: High ERCC1 expression might be an adverse prognostic and a drug-resistance predictive factor for advanced GC patients. However, further studies with consistent ERCC1 assessment methodology are needed.
Authors: Kyung Jai Ko; Jung Ho Shim; Han Mo Yoo; Seong Il O; Hae Myung Jeon; Cho Hyun Park; Dong Jin Jeon; Kyo Young Song Journal: World J Surg Date: 2012-08 Impact factor: 3.352
Authors: Anna D Wagner; Wilfried Grothe; Johannes Haerting; Gerhard Kleber; Axel Grothey; Wolfgang E Fleig Journal: J Clin Oncol Date: 2006-06-20 Impact factor: 44.544
Authors: R Metzger; C G Leichman; K D Danenberg; P V Danenberg; H J Lenz; K Hayashi; S Groshen; D Salonga; H Cohen; L Laine; P Crookes; H Silberman; J Baranda; B Konda; L Leichman Journal: J Clin Oncol Date: 1998-01 Impact factor: 44.544