title: Matrix metalloproteinase (MMP)-7 in salivary gland cancer.
abstract: BACKGROUND
  High levels of certain matrix metalloproteinases (MMPs) have been detected in various human cancers. The purpose of this study was to analyze the expression of MMP-7 in salivary gland cancer (SGC) by immunohistochemistry and to associate the results with the clinical data and the 10-year survival of the SGC patients.
  
  
  METHODS
  Immunohistochemistry for MMP-7 was performed in a series of 107 paraffin-embedded sections of SGC. The samples represent the entire SGC population in Finland from 1991-1996. Mortality follow-up ended December 31, 2006.
  
  
  RESULTS
  The study population of 107 patients consisted of 47 male and 60 female subjects, ranging in age at the time of diagnosis between 23 and 90 years. The minimum follow-up time was 10.6 years and the maximum 15.9 years. By age-adjusted analysis lower staining intensity was associated with worse overall survival of patients with acinic cell carcinoma (p = 0.047, HR 6.5, 95% Cl 1.0-41.7) and in mucoepidermoid carcinoma (p = 0.010, HR 9.3, 95% CI 1.7-50.0). Low staining intensity was also associated with worse disease-specific survival of patients with acinic cell carcinoma (0-1 vs. 2-3; p = 0.047, HR 13.7, 1.0-200.0). VCI Ki-67 was an important prognostic factor for survival of the entire data set (p < 0.0001, HR 4.7, 95% Cl 2.3-9.8).
  
  
  CONCLUSIONS
  MMP-7 is associated with the prognosis of patients with acinic cell and mucoepidermoid carcinoma.
authors.affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, University of Turku and Turku University Hospital, Turku, Finland.
authors.forename: Heikki
authors.initials: H
authors.lastname: Luukkaa
authors.forename: Pekka
authors.initials: P
authors.lastname: Klemi
authors.forename: Pirkko
authors.initials: P
authors.lastname: Hirsimäki
authors.forename: Tero
authors.initials: T
authors.lastname: Vahlberg
authors.forename: Atte
authors.initials: A
authors.lastname: Kivisaari
authors.forename: Veli-Matti
authors.initials: VM
authors.lastname: Kähäri
authors.forename: Reidar
authors.initials: R
authors.lastname: Grénman
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D018267:Carcinoma, Acinar Cell / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D044584:Carcinoma, Ductal / Q000378:metabolism / Q000401:mortality / Q000473:pathology; D018277:Carcinoma, Mucoepidermoid / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D020783:Matrix Metalloproteinase 7 / Q000096:biosynthesis*; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012468:Salivary Gland Neoplasms / Q000378:metabolism* / Q000401:mortality
chemical_list: D014408:Biomarkers, Tumor; D020783:Matrix Metalloproteinase 7