PMID- 23032747 OWN - NLM STAT- MEDLINE DCOM- 20130618 LR - 20220410 IS - 1557-3265 (Electronic) IS - 1078-0432 (Linking) VI - 19 IP - 1 DP - 2013 Jan 1 TI - Biomarker discovery in non-small cell lung cancer: integrating gene expression profiling, meta-analysis, and tissue microarray validation. PG - 194-204 LID - 10.1158/1078-0432.CCR-12-1139 [doi] AB - PURPOSE: Global gene expression profiling has been widely used in lung cancer research to identify clinically relevant molecular subtypes as well as to predict prognosis and therapy response. So far, the value of these multigene signatures in clinical practice is unclear, and the biologic importance of individual genes is difficult to assess, as the published signatures virtually do not overlap. EXPERIMENTAL DESIGN: Here, we describe a novel single institute cohort, including 196 non-small lung cancers (NSCLC) with clinical information and long-term follow-up. Gene expression array data were used as a training set to screen for single genes with prognostic impact. The top 450 probe sets identified using a univariate Cox regression model (significance level P < 0.01) were tested in a meta-analysis including five publicly available independent lung cancer cohorts (n = 860). RESULTS: The meta-analysis revealed 14 genes that were significantly associated with survival (P < 0.001) with a false discovery rate <1%. The prognostic impact of one of these genes, the cell adhesion molecule 1 (CADM1), was confirmed by use of immunohistochemistry on tissue microarrays from 2 independent NSCLC cohorts, altogether including 617 NSCLC samples. Low CADM1 protein expression was significantly associated with shorter survival, with particular influence in the adenocarcinoma patient subgroup. CONCLUSIONS: Using a novel NSCLC cohort together with a meta-analysis validation approach, we have identified a set of single genes with independent prognostic impact. One of these genes, CADM1, was further established as an immunohistochemical marker with a potential application in clinical diagnostics. FAU - Botling, Johan AU - Botling J AD - Departments of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden. FAU - Edlund, Karolina AU - Edlund K FAU - Lohr, Miriam AU - Lohr M FAU - Hellwig, Birte AU - Hellwig B FAU - Holmberg, Lars AU - Holmberg L FAU - Lambe, Mats AU - Lambe M FAU - Berglund, Anders AU - Berglund A FAU - Ekman, Simon AU - Ekman S FAU - Bergqvist, Michael AU - Bergqvist M FAU - Ponten, Fredrik AU - Ponten F FAU - Konig, Andre AU - Konig A FAU - Fernandes, Oswaldo AU - Fernandes O FAU - Karlsson, Mats AU - Karlsson M FAU - Helenius, Gisela AU - Helenius G FAU - Karlsson, Christina AU - Karlsson C FAU - Rahnenfuhrer, Jorg AU - Rahnenfuhrer J FAU - Hengstler, Jan G AU - Hengstler JG FAU - Micke, Patrick AU - Micke P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121002 PL - United States TA - Clin Cancer Res JT - Clinical cancer research : an official journal of the American Association for Cancer Research JID - 9502500 RN - 0 (Biomarkers, Tumor) RN - 0 (CADM1 protein, human) RN - 0 (Cell Adhesion Molecule-1) RN - 0 (Cell Adhesion Molecules) RN - 0 (Immunoglobulins) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/*genetics MH - Carcinoma, Non-Small-Cell Lung/*genetics/mortality/pathology MH - Cell Adhesion Molecule-1 MH - Cell Adhesion Molecules/genetics/metabolism MH - Cluster Analysis MH - Female MH - *Gene Expression Profiling MH - *Gene Expression Regulation, Neoplastic MH - Humans MH - Immunoglobulins/genetics/metabolism MH - Lung Neoplasms/*genetics/mortality/pathology MH - Male MH - Middle Aged MH - Neoplasm Staging MH - Prognosis MH - Reproducibility of Results EDAT- 2012/10/04 06:00 MHDA- 2013/06/19 06:00 CRDT- 2012/10/04 06:00 PHST- 2012/10/04 06:00 [entrez] PHST- 2012/10/04 06:00 [pubmed] PHST- 2013/06/19 06:00 [medline] AID - 1078-0432.CCR-12-1139 [pii] AID - 10.1158/1078-0432.CCR-12-1139 [doi] PST - ppublish SO - Clin Cancer Res. 2013 Jan 1;19(1):194-204. doi: 10.1158/1078-0432.CCR-12-1139. Epub 2012 Oct 2.