title: Serum level of cytokeratin 19 fragment (CYFRA 21-1) indicates tumour stage and prognosis of squamous cell carcinoma of the oesophagus.
abstract: To determine the clinical efficacy of serum concentration of cytokeratin 19 fragment (CYFRA 21-1), sera from 66 patients with oesophageal squamous cell carcinoma were examined, and 54 surgically resected specimens were immunohistochemically stained for cytokeratin 19 (CK-19). The patients with positive CK-19 staining in the tissues of their carcinomas had significantly higher serum CYFRA 21-1 levels compared with those with negative CK-19 staining. When the cut-off value was defined as 2.0 ng/mL, CYFRA 21-1 had a higher positive ratio than that of either squamous cell carcinoma antigen (SCC-Ag) or carcinoembryonic antigen (CEA). Serum CYFRA 21-1 level increased significantly along with the clinical stages. In addition, serum CYFRA 21-1 level served as a prognostic factor for patients with oesophageal carcinoma after surgery, whilst SSC-Ag and CEA is not connected with the outcome. These findings suggest that the serum CYFRA 21-1 probably originated from the tumour tissue is an important marker for determining the stage and outcome of oesophageal carcinoma.
authors.affiliation: First Department of Surgery, Nippon Medical School, Tokyo, Japan. kazu@nn.iij4u.or.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Tsuchiya
authors.forename: M
authors.initials: M
authors.lastname: Onda
authors.forename: M
authors.initials: M
authors.lastname: Miyashita
authors.forename: K
authors.initials: K
authors.lastname: Sasajima
mesh_terms: D000328:Adult; D000368:Aged; D000951:Antigens, Neoplasm / Q000097:blood*; D014408:Biomarkers, Tumor / Q000097:blood*; D002272:Carcinoembryonic Antigen / Q000097:blood; D002294:Carcinoma, Squamous Cell / Q000097:blood* / Q000378:metabolism / Q000473:pathology; D004938:Esophageal Neoplasms / Q000097:blood* / Q000378:metabolism / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D053539:Keratin-19; D007633:Keratins / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012189:Retrospective Studies; D015843:Serpins
chemical_list: D000951:Antigens, Neoplasm; D014408:Biomarkers, Tumor; D002272:Carcinoembryonic Antigen; D053539:Keratin-19; D015843:Serpins; C102012:antigen CYFRA21.1; C051072:squamous cell carcinoma-related antigen; D007633:Keratins