title: Lipid-associated sialic acid, squamous cell carcinoma antigen, carcinoembryonic antigen, and lactic dehydrogenase levels as tumor markers in squamous cell carcinoma of the head and neck.
abstract: BACKGROUND
  Circulating tumor markers are valuable adjuncts in the management of several malignant lesions, including germ cell tumors and adenocarcinomas of the breast, colon, prostate, and ovary. However (to the authors' knowledge), currently, no serologic markers have been shown to have prognostic value for patients with squamous cell carcinomas of the head and neck (SCCHN).
  
  
  METHODS
  Novel and existing markers were evaluated prospectively in patients with SCCHN: The levels of lipid-associated sialic acids (LASA), squamous cell carcinoma circulating antigen (SCC-Ag), carcinoembryonic antigen (CEA), and lactic dehydrogenase (LDH) were evaluated in 52 patients: 42 with active measurable SCCHN and 10 with no clinical evidence of active disease after treatment (NED).
  
  
  RESULTS
  In patients with active disease, LASA, SCC-Ag, CEA, and LDH were elevated in 71%, 33%, 27%, and 18%, respectively, and in seven patients with distant metastasis (M1) in 100%, 86%, 57%, and 33%, respectively. None of the markers were elevated in the NED group. The incidence and magnitude of LASA and SCC-Ag elevations correlated with the extent of disease (active disease versus NED, Stage III versus IV, T0-3 versus T4 primary lesions, M0 versus M1). LDH and CEA elevations correlated primarily with the presence of distant metastases.
  
  
  CONCLUSIONS
  LASA appears to be a promising sensitive marker of SCCHN, followed in decreasing order of sensitivity by SCC-Ag, CEA, and LDH. Additional study to evaluate the specificity of LASA and its correlation with tumor response to therapy is warranted.
authors.affiliation: Division of Medicine, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115.
authors.forename: A I
authors.initials: AI
authors.lastname: Dreyfuss
authors.forename: J R
authors.initials: JR
authors.lastname: Clark
authors.forename: J W
authors.initials: JW
authors.lastname: Andersen
mesh_terms: D000951:Antigens, Neoplasm / Q000097:blood; D014408:Biomarkers, Tumor / Q000097:blood*; D002272:Carcinoembryonic Antigen / Q000097:blood; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007770:L-Lactate Dehydrogenase / Q000097:blood; D008055:Lipids / Q000097:blood; D008297:Male; D008875:Middle Aged; D019158:N-Acetylneuraminic Acid; D011446:Prospective Studies; D012698:Serologic Tests; D015843:Serpins; D012794:Sialic Acids / Q000097:blood
chemical_list: D000951:Antigens, Neoplasm; D014408:Biomarkers, Tumor; D002272:Carcinoembryonic Antigen; D008055:Lipids; D015843:Serpins; D012794:Sialic Acids; C054080:lipid-associated sialic acid; C051072:squamous cell carcinoma-related antigen; D007770:L-Lactate Dehydrogenase; D019158:N-Acetylneuraminic Acid