1. A prospective randomised phase-II trial with gemcitabine versus gemcitabine plus sunitinib in advanced pancreatic cancer: A study of the CESAR Central European Society for Anticancer Drug Research–EWIV.
- Author
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Bergmann, L., Maute, L., Heil, G., Rüssel, J., Weidmann, E., Köberle, D., Fuxius, S., Weigang-Köhler, K., Aulitzky, W.E., Wörmann, B., Hartung, G., Moritz, B., Edler, L., Burkholder, I., Scheulen, M.E., and Richly, H.
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ANTIMETABOLITES , *ANTINEOPLASTIC agents , *CANCER patients , *COMBINATION drug therapy , *CONFIDENCE intervals , *DRUG toxicity , *LONGITUDINAL method , *EVALUATION of medical care , *MEDICAL societies , *PANCREATIC tumors , *SURVIVAL , *RANDOMIZED controlled trials , *DISEASE complications , *DIAGNOSIS - Abstract
Background Pancreatic ductal adenocarcinoma (PDAC) is one of the most common malignant tumours and is still associated with a poor prognosis in advanced disease. To improve the standard therapy with gemcitabine, we initiated a prospective randomised phase-II trial with gemcitabine (GEM) versus gemcitabine plus sunitinib (SUNGEM) based on data of in vitro trials and phase-I data for the combination treatment. The rational of adding sunitinib was its putative antiangiogenic mechanism of action. Methods A total of 106 eligible patients with locally advanced, unresectable or metastatic PDAC without previous system therapy were randomised to receive GEM at a dosage of 1.000 mg/m 2 d1, 8, 15 q28 versus a combination of SUNGEM at a dosage of GEM 1.000 mg/m 2 d1 + 8 and sunitinib 50 mg p.o. d1–14, q21d. The primary end-point was progression free survival (PFS), secondary end-points were overall survival (OS), toxicity and overall response rate (ORR). Results The confirmatory analysis of PFS was based on the intend-to-treat (ITT) population ( N = 106). The median PFS was 13.3 weeks (95% confidence interval (95%-CI): 10.4–18.1 weeks) for GEM and 11.6 weeks for SUNGEM (95%-CI: 7.0–18.0 weeks; p = 0.78 one-sided log-rank). The ORR was 6.1% (95%-CI: 0.7–20.2%) for GEM and for 7.1% (95%-CI: 0.9–23.5%) for SUNGEM ( p = 0.87). The median time to progression (TTP) was 14.0 weeks (95%-CI: 12.4–22.3 weeks) for GEM and 18.0 weeks (95%-CI: 11.3–19.3 weeks) for SUNGEM ( p = 0.60; two-sided log-rank). The median OS was 36.7 weeks (95%-CI: 20.6–49.0 weeks) for the GEM arm and 30.4 weeks (95%-CI: 18.1–37.6 weeks) for the SUNGEM ( p = 0.78, one-sided log-rank). In regard to toxicities, suspected SAEs were reported in 53.7% in the GEM arm and 71.2% in the SUNGEM arm. Grade 3 and 4 neutropenia was statistically significantly higher in the SUNGEM arm with 48.1% versus 27.8% in the GEM arm ( p = 0.045, two sided log-rank). Conclusions The combination SUNGEM was not sufficient superior in locally advanced or metastatic PDAC compared to GEM alone in regard to efficacy but was associated with more toxicity. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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