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 language | English |
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Journal | European journal of cancer (Oxford, England : 1990) |
Volume | 51 |
Issue number | 11 |
Pages (from-to) | 1381-8 |
Number of pages | 8 |
ISSN | 0959-8049 |
DOIs | |
Publication status | Published - 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