Journal
ANNALS OF ONCOLOGY
Volume 23, Issue 9, Pages 2341-2346Publisher
OXFORD UNIV PRESS
DOI: 10.1093/annonc/mds008
Keywords
biliary tract cancer; chemotherapy; cholangiocarcinoma; KRAS; marker-driven treatment; panitumumab
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Funding
- Danish National Board of Health
- The pharmaceutical company Amgen
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Combination chemotherapy has proven beneficial in biliary tract cancer and further improvements may be achieved by individualizing treatment based on biomarkers and by adding biological agents. We report the effect of chemotherapy with panitumumab as first-line therapy for KRAS wild-type irresectable biliary tract cancer. Patients were treated with gemcitabine 1000 mg/m(2), oxaliplatin 60 mg/m(2), and panitumumab 6 mg/kg i.v. every 2 weeks followed by two daily administrations of capecitabine 1000 mg/m(2) in 7 days. During 22 months, 46 patients were included in a single institution. The primary end point, fraction of progression-free survival (PFS) at 6 months, was 31/42 [74%; 95% confidence interval (CI) 58% to 84%]. Forty-two patients had measurable disease. Response rate was 33% and disease control rate 86%. Median PFS was 8.3 months (95% CI 6.7-8.7 months) and median overall survival was 10.0 months (95% CI 7.4-12.7 months). Toxicity was manageable including eight cases of epidermal growth factor receptor-related skin adverse events of grade 2 or more. Marker-driven patient selection is feasible in the systemic treatment of biliary tract cancer. Combination chemotherapy with panitumumab in patients with KRAS wild-type tumors met the efficacy criteria for future testing in a randomized trial.
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