title: Osteopontin, E-cadherin, and β-catenin expression as prognostic biomarkers in patients with radically resected gastric cancer.
abstract: A correlation between osteopontin, E-cadherin, β-catenin, and cyclooxygenase 2 overexpression and poor clinicopathological features and prognosis has been previously suggested in gastric cancer. This translational study was aimed at assessing the correlation of these immunohistochemical biomarkers with outcome in patients with radically resected gastric cancer. We analyzed osteopontin, E-cadherin, β-catenin, and cyclooxygenase 2 expression by immunohistochemistry in 346 primary gastric tumor tissue samples from patients enrolled in the ITACA-S trial. This phase III study randomized patients with radically resected gastric cancer to receive adjuvant chemotherapy with either 5-fluorouracil and leucovorin or a sequential regimen of infusional 5-fluorouracil and leucovorin plus irinotecan followed by cisplatin and docetaxel. High expression of osteopontin was correlated with high histological grade, diffuse histotype, and peritoneal relapse, but not with TNM stage. Moreover, osteopontin overexpression was associated with higher risk of tumor recurrence and metastases, and was an independent prognostic factor for both relapse-free and overall survival of gastric cancer patients following adjuvant chemotherapy. Abnormal E-cadherin expression and abnormal β-catenin expression were correlated with more advanced disease stage, and as a consequence, with poor outcome. Our results suggest that osteopontin overexpression is a valuable independent predictor of tumor recurrence and survival in patients with radically resected gastric cancer.
authors: Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133, Milan, Italy. maria.dibartolomeo@istitutotumori.mi.it.
authors: Maria
authors: M
authors: Di Bartolomeo
authors: Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133, Milan, Italy.
authors: Filippo
authors: F
authors: Pietrantonio
authors: Pathology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
authors: Alessandro
authors: A
authors: Pellegrinelli
authors: Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133, Milan, Italy.
authors: Antonia
authors: A
authors: Martinetti
authors: Unit of Medical Statistics, Biometry and Bioinformatics, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
authors: Luigi
authors: L
authors: Mariani
authors: Experimental Oncology and Molecular Medicine Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
authors: Maria Grazia
authors: MG
authors: Daidone
authors: Medical Oncology Unit, IDO Policlinico, Monza, Italy.
authors: Emilio
authors: E
authors: Bajetta
authors: Pathology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
authors: Giuseppe
authors: G
authors: Pelosi
authors: Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133, Milan, Italy.
authors: Filippo
authors: F
authors: de Braud
authors: Clinical Research Laboratory, IRCCS Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy.
authors: Irene
authors: I
authors: Floriani
authors: Unit of Medical Statistics, Biometry and Bioinformatics, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
authors: Rosalba
authors: R
authors: Miceli
mesh_terms: D000368:Aged; D015703:Antigens, CD; D014408:Biomarkers, Tumor / Q000378:metabolism*; D015820:Cadherins / Q000378:metabolism*; D051546:Cyclooxygenase 2 / Q000378:metabolism; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D053495:Osteopontin / Q000378:metabolism*; D011379:Prognosis; D013274:Stomach Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D051176:beta Catenin / Q000378:metabolism*
chemical_list: D015703:Antigens, CD; D014408:Biomarkers, Tumor; C513384:CDH1 protein, human; C495270:CTNNB1 protein, human; D015820:Cadherins; C506895:SPP1 protein, human; D051176:beta Catenin; D053495:Osteopontin; D051546:Cyclooxygenase 2; C496540:PTGS2 protein, human
keywords: Adjuvant chemotherapy; Biomarker; Gastric cancer; Osteopontin; Prognosis