title: Clinicopathological significance of pRb2/p130 expression in squamous cell carcinoma of the esophagus.
abstract: OBJECTIVE
  The aim of the current study was to find out the significance of the immunohistochemical expression of pRb2/p130, which is a member of the retinoblastoma gene family, in squamous cell carcinoma of the esophagus.
  
  
  METHODS
  We analyzed immunohistochemically the expression of pRb2/p130 of 107 squamous cell carcinomas (SCCs) of the esophagus and the correlation of pRb2/p130 expression with clinicopathological features was investigated.
  
  
  RESULTS
  Expression of pRb2/p130 was observed in 42 SCCs (39.3%). There was a significant correlation of pRb2/p130 expression with the histological type of well-differentiated SCC (P< 0.0001). The survival rate of patients with esophageal SCCs expressing pRb2/p130 was significantly better than that of patients with tumors without pRb2/p130 expression (P= 0.016). A multivariate analysis demonstrated that pRb2/p130 expression (P= 0.026), venous invasion (P= 0.028), and TNM stage (P= 0.044) were independent prognostic indicators in patients with esophageal SCCs.
  
  
  CONCLUSIONS
  Differentiation of esophageal SCC might be partially mediated by the pRb2/p130 gene, and pRb2/p130 expression can additionally be an indicator of the better prognosis of patients with esophageal SCCs.
authors.affiliation: Department of General Surgery, Fukuoka Dental College Hospital, Sawara Ward, Japan. nonta@college.fdcnet.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Nozoe
authors.forename: D
authors.initials: D
authors.lastname: Korenaga
authors.forename: S
authors.initials: S
authors.lastname: Itoh
authors.forename: M
authors.initials: M
authors.lastname: Futatsugi
authors.forename: Y
authors.initials: Y
authors.lastname: Maehara
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D002294:Carcinoma, Squamous Cell / Q000235:genetics* / Q000401:mortality / Q000473:pathology*; D002454:Cell Differentiation; D004938:Esophageal Neoplasms / Q000235:genetics* / Q000401:mortality / Q000473:pathology*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D010750:Phosphoproteins / Q000235:genetics*; D011506:Proteins; D050717:Retinoblastoma-Like Protein p130; D012189:Retrospective Studies; D015996:Survival Rate
chemical_list: D014408:Biomarkers, Tumor; D010750:Phosphoproteins; D011506:Proteins; C493837:RBL2 protein, human; D050717:Retinoblastoma-Like Protein p130