Decline in CA19-9 during chemotherapy predicts survival in four independent cohorts of patients with inoperable bile duct cancer

Mie Grunnet, Ib J Christensen, Ulrik Lassen, Lars H Jensen, Magnus Lydolph, Jennifer J Knox, Mairead G McNamara, Mark Jitlal, Harpreet Wasan, John Bridgewater, Juan W Valle, Morten Mau-Sørensen

17 Citations (Scopus)

Abstract

Background: Carbohydrate associated antigen (CA19-9) has been approved by the FDA as a biomarker for monitoring treatment effect in pancreatic cancer. However, the value of serum CA19-9 as a biomarker of response to chemotherapy in bile duct cancer is unclear. The aim of this study was to determine if a decline in CA19-9 (CA19-9 response) during chemotherapy is predictive of survival in patients with inoperable bile duct cancer. Methods: Consecutive patients with inoperable bile duct cancer treated at a University Hospital were retrospectively included in an investigational cohort (n = 212). Three validation cohorts were established including patients 1) participating in phase I/II trials at a Danish Hospital (n = 71), 2) identified retrospectively in a Canadian cohort (n = 196) and 3) randomized in the ABC-02 trial (n = 410). Patients with a baseline CA19-9 and at least one CA19-9 value measured 10-12 weeks after the start of chemotherapy were included. Multivariate Cox regression analyses were performed.

Original languageEnglish
JournalEuropean journal of cancer (Oxford, England : 1990)
Volume51
Issue number11
Pages (from-to)1381-8
Number of pages8
ISSN0959-8049
DOIs
Publication statusPublished - Jul 2015

Keywords

  • Adult
  • Aged
  • Aged, 80 and over
  • Bile Duct Neoplasms
  • CA-19-9 Antigen
  • Clinical Trials, Phase I as Topic
  • Clinical Trials, Phase II as Topic
  • Cohort Studies
  • Female
  • Humans
  • Male
  • Middle Aged
  • Prognosis
  • Prospective Studies
  • Randomized Controlled Trials as Topic
  • Retrospective Studies
  • Survival Analysis

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