Abstract
Purpose
Everolimus is a standard treatment option for advanced pancreatic neuroendocrine tumors (pNETs). This multicenter study evaluated the efficacy and safety of everolimus in low and intermediate grade advanced pNETs.
Methods
Tumors were graded according to the World Health Organization 2010 classification system. Patients with low or intermediate grade pNETs who received everolimus as first- or second-line chemotherapy between 2002 and 2014 were included.
Results
A total of 40 patients with metastatic or recurrent pNETs were included in this study. The median age was 54.5 years (range 19–83 years). Twelve patients (30%) experienced recurrence. There were 11 patients (27.5%) with low grade pNETs and 29 (72.5%) with intermediate. Everolimus was administered as first-line therapy in 30 patients (75%) and as second-line therapy in 10 patients (25%). The median progression-free survival (PFS) of patients with low and intermediate grade pNETs was significantly different (median not reached vs. 11 months, P = 0.015). On multivariate analysis, tumor grade (intermediate grade; HR 6.52, 95% CI 1.31–32.27, P = 0.022) was the only independent prognostic factor for PFS in pNETs. The most common adverse events were stomatitis, skin rash, and anemia.
Conclusions
World Health Organization 2010 grade is the most important determinant for PFS in patients undergoing everolimus treatment for pNETs with an acceptable incidence of adverse events.
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Acknowledgements
This study was conducted as a part of the Korean Gastroenteropancreatic Neuroendocrine Tumor Registry research project of the Korean Society of Gastrointestinal Cancer (KSGC).
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Lee, K.J., Cho, J.H., Lee, S.H. et al. Clinical outcomes of everolimus in patients with advanced, nonfunctioning pancreatic neuroendocrine tumors: a multicenter study in Korea. Cancer Chemother Pharmacol 80, 799–805 (2017). https://doi.org/10.1007/s00280-017-3421-7
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DOI: https://doi.org/10.1007/s00280-017-3421-7