Use of Cytokeratin-19 Concentration to Assess Early Recurrence and Prognosis of Hepatitis B Virus-Related Hepatocellular Carcinoma following Radical Resection in Patients with a Low Serum Alpha-Fetoprotein Concentration

PLoS One. 2015 Nov 20;10(11):e0142727. doi: 10.1371/journal.pone.0142727. eCollection 2015.

Abstract

Cytokeratin 19 (CK-19) is a prognostic indicator of recurrence and metastasis of hepatocellular carcinoma (HCC) following radical resection. To investigate the role of CK-19 in assessment of early recurrence and prognosis in patients with hepatitis B virus (HBV)-related HCC following radical resection. In total, 235 patients with HBV-related HCC (age, 15-82 years; mean age, 54 ± 10 years) undergoing radical resection were screened for inclusion from January 2005 to December 2010. Malignant tissues and adjacent non-malignant tissues were sampled during surgery, and CK-19 and Ki-67 expression was determined by tissue microarray and immunohistochemistry. CK-19 mRNA levels in 30 randomly selected frozen HCC specimens were examined by reverse transcription polymerase chain reaction from January 2011 to June 2011. Correlations of CK-19 and Ki-67 expression with tumor recurrence, metastasis, disease-free survival (DFS), and overall survival (OS) were analyzed. Elevated CK-19 expression was correlated with early recurrence (P = 0.001), shorter DFS (P = 0.001), and reduced OS (P = 0.010). CK-19 expression was correlated with the Ki-67 index (P = 0.037), histological differentiation (P = 0.016), focal number (P = 0.044), and blood vessel tumor embolism (P = 0.002). Patients with metastasis within 1 year exhibited stronger CK-19 expression than did patients without metastasis (P < 0.05). Furthermore, early recurrence was associated with elevated CK-19 mRNA levels (χ2 = 5.761, P = 0.016).When confirmed by a low alpha-fetoprotein concentration (<400 μg/L), CK-19 expression in surgical biopsy specimens taken from patients with HCC during radical resection is an additional valuable indicator of early recurrence, distant metastasis, and poor prognosis in HBV-positive patients.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Biomarkers, Tumor / blood
  • Carcinoma, Hepatocellular / blood*
  • Carcinoma, Hepatocellular / pathology
  • Carcinoma, Hepatocellular / surgery
  • Carcinoma, Hepatocellular / virology
  • Disease-Free Survival
  • Gene Expression Regulation, Neoplastic
  • Hepatitis B virus / pathogenicity
  • Humans
  • Keratin-19 / blood*
  • Liver Neoplasms / blood*
  • Liver Neoplasms / pathology
  • Liver Neoplasms / surgery
  • Liver Neoplasms / virology
  • Male
  • Middle Aged
  • Neoplasm Metastasis
  • Neoplasm Recurrence, Local / blood*
  • Neoplasm Recurrence, Local / pathology
  • Neoplasm Recurrence, Local / surgery
  • Prognosis
  • alpha-Fetoproteins / genetics*

Substances

  • Biomarkers, Tumor
  • Keratin-19
  • alpha-Fetoproteins

Grants and funding

The authors have no support or funding to report.