title: [Expression of metastasis suppressor gene nm23-H1 in oral squamous cell carcinoma and its relation to tumor prognosis].
abstract: OBJECTIVE
  To study the relation between the expression level of nm23-H1 protein and prognosis of oral squamous cell carcinoma (OSCC).
  
  
  METHODS
  The expression of nm23-H1 protein in 75 cases of OSCC, 27 cases of oral mucosa, 9 cases of cervical lymph-node metastases by immunohistochemical technique (SABC), and the relation between nm23-H1 protein expression level and prognosis of OSCC was evaluated by chi-test and single-factor, multi-factor Cox proportional hazards regression model analysis.
  
  
  RESULTS
  These immunoreactivities of nm23-H1 protein were mostly in the cytoplasm of tumor and epithelial cells. There was a significant difference of nm23-H1 protein expression level between three-year survival and seven-year survival group (P < 0.05), and there was a relation between nm23-H1 protein expression level and prognosis of OSCC in single-factor Cox analysis. But no relation was found between nm23-H1 protein expression level and prognosis in multi-factor Cox analysis.
  
  
  CONCLUSIONS
  nm23-H1 protein expression level was probably not a valuable predictor of OSCC patients' prognosis. It may indirectly affect OSCC prognosis through its effect on OSCC metastasis.
authors.affiliation: Department of Stomatology, Peking Union Medicine College Hospital, Chinese Academy of Medical Science and Peking Union Medicine College, Beijing 100730.
authors.forename: T
authors.initials: T
authors.lastname: Zhang
authors.forename: Q
authors.initials: Q
authors.lastname: Lai
authors.forename: D
authors.initials: D
authors.lastname: Du
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D020559:Monomeric GTP-Binding Proteins / Q000096:biosynthesis*; D009062:Mouth Neoplasms / Q000378:metabolism / Q000473:pathology*; D054778:NM23 Nucleoside Diphosphate Kinases; D009701:Nucleoside-Diphosphate Kinase; D011379:Prognosis; D016019:Survival Analysis; D014157:Transcription Factors / Q000096:biosynthesis*
chemical_list: D054778:NM23 Nucleoside Diphosphate Kinases; D014157:Transcription Factors; C517938:NME1 protein, human; D009701:Nucleoside-Diphosphate Kinase; D020559:Monomeric GTP-Binding Proteins