title: DNA index is a strong predictive marker in intrahepatic cholangiocarcinoma: the results of a five-year prospective study.
abstract: OBJECTIVE
  Predictive markers for risk stratification among patients with intrahepatic cholangiocarcinoma (IHC) are still lacking. Therefore, recent studies have focused on identifying the biological aspects of tumors that can provide more information about the tumor aggressiveness. The aim of this study was to prospectively evaluate the prognostic potential of the DNA index in patients undergoing liver resection for IHC.
  
  
  METHODS
  In a prospective long-term follow-up study, the DNA index of 65 IHC patients undergoing liver resection was assessed by DNA image cytometry, and this parameter, as well as standard histopathological parameters, correlated with the patient survival.
  
  
  RESULTS
  The mean DNA index was 1.69 ± 0.66 (range, 0.9-4.3). The univariate survival analysis showed that the DNA index (p = 0.024) and tumor stage (p = 0.017) were associated with patient survival, whereas all other standard histopathological factors had no predictive value. The multivariate analysis identified the DNA index (p = 0.050) and tumor stage (p = 0.028) as independent prognostic parameters.
  
  
  CONCLUSIONS
  The DNA index is an independent predictive marker for IHC after liver resection. It is superior to most standard histopathological parameters and can be assessed pre- and postoperatively. Therefore, the DNA index might represent a promising tool in the decision-making process for patients with IHC.
authors: Department of General Visceral and Transplantation Surgery, Charité University Hospital, Berlin, Germany, carsten.kamphues@charite.de.
authors: Carsten
authors: C
authors: Kamphues
authors: Nadine
authors: N
authors: Al-Abadi
authors: Angelika
authors: A
authors: Dürr
authors: Roberta
authors: R
authors: Bova
authors: Frederick
authors: F
authors: Klauschen
authors: Albrecht
authors: A
authors: Stenzinger
authors: Marcus
authors: M
authors: Bahra
authors: Hussein
authors: H
authors: Al-Abadi
authors: Peter
authors: P
authors: Neuhaus
authors: Daniel
authors: D
authors: Seehofer
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D018281:Cholangiocarcinoma / Q000175:diagnosis / Q000235:genetics* / Q000401:mortality / Q000601:surgery; D004273:DNA, Neoplasm / Q000032:analysis* / Q000235:genetics; D005260:Female; D005500:Follow-Up Studies; D006498:Hepatectomy; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000235:genetics* / Q000401:mortality / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011003:Ploidies; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012306:Risk; D015996:Survival Rate; D013997:Time Factors
chemical_list: D014408:Biomarkers, Tumor; D004273:DNA, Neoplasm
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