Abstract
Background
A family/personal history of breast, ovarian, or pancreatic cancer is a useful predictive marker for response to platinum-based chemotherapy in treating patients with pancreatic cancer. These cancers, and prostate cancer, are known as BRCA-related malignancies. We evaluated the efficacy of gemcitabine plus oxaliplatin (GEMOX) in patients with metastatic pancreatic cancer with a family/personal history of these cancers.
Methods
Chemotherapy-naïve patients with metastatic pancreatic cancer with a family history of pancreatic/breast/ovarian/prostate cancer or a personal history of breast/ovarian/prostate cancer were included. Patients received fixed dose-rate gemcitabine (1000 mg/m2) and oxaliplatin (100 mg/m2) every 2 weeks. The primary endpoint was 1-year survival, and the threshold and expected values were set at 30 and 50%, respectively. The target sample size was determined to be 43, with a one-sided alpha value of 5% and power of 80%. A total of 45 patients were enrolled.
Results
Among the first 43 enrolled patients, the 1-year survival rate was 27.9% [90% confidence interval (CI) 17.0–41.3], which did not meet the primary endpoint. Median overall survival, progression-free survival, and response rates were 7.6 months (95% CI 6.0–10.7), 4.0 months (95% CI 2.0–4.6), and 26.7% (95% CI 14.6–41.9), respectively, in all registered patients. The GEMOX regimen was generally tolerated; the most common grade three or higher adverse events were hematological toxicities.
Conclusion
GEMOX did not show the expected efficacy in patients with metastatic pancreatic cancer with a family or personal history of pancreatic/breast/ovarian/prostate cancer. Selection of GEMOX based on family/personal history is not recommended.
Trial registration number
UMIN000017894.
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Acknowledgements
We wish to thank all the patients and their families for participating in this study. We are grateful to all the investigators in this trial. This research was partially supported by the Practical Research for Innovative Cancer Control from Japan Agency for Medical Research and development, AMED.
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All authors contributed to the study conception and design. Provision of material or patients, data collection and analysis were performed by all authors. The first draft of the manuscript was written by NO, CM, SN, and JF and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Conflict of interest
Morizane C. received research funding from Yakult Honsha, and Eli Lilly Japan. Satake H. received honoraria from Eli Lilly Japan. Mizuno N. received research funding from Dainippon Sumitomo Pharma, MSD, ASLAN Pharmaceuticals, Incyte, and Yakult Honsha. Kanai M received from honoraria from Chugai Pharmaceutical. Shimizu S. received research funding from Yakult Honsha.Ikeda M. received honoraria from Eli Lilly Japan, and received research funding from Yakult Honsha. Okusaka T. received research funding from AstraZeneca, Chugai Pharmaceutical, Eisai, Novartis Pharma, and Bristol-Myers. Furuse J. received honoraria and research funding from Yakult Honsha, and Eli Lilly Japan. The other authors declare that they have no conflict of interest.
Ethical approval
The study was performed in accordance with the ethical standards established in the 1964 Declaration of Helsinki and its later amendments. The study was approved by the institutional review board of each study site, and all the patients provided informed consent prior to their inclusion in the study.
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Okano, N., Morizane, C., Nomura, S. et al. Phase II clinical trial of gemcitabine plus oxaliplatin in patients with metastatic pancreatic adenocarcinoma with a family history of pancreatic/breast/ovarian/prostate cancer or personal history of breast/ovarian/prostate cancer (FABRIC study). Int J Clin Oncol 25, 1835–1843 (2020). https://doi.org/10.1007/s10147-020-01721-x
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DOI: https://doi.org/10.1007/s10147-020-01721-x