Oral mTOR inhibitor everolimus in patients with gemcitabine-refractory metastatic pancreatic cancer
Open accessAbstract
Purpose: The PI3K/Akt/mTOR pathway is activated in the majority of pancreatic cancers, and inhibition of this pathway has antitumor effects in preclinical studies. We performed a multi-institutional, single-arm, phase II study of RAD001(everolimus), an oral inhibitor of mTOR, in patients who experienced treatment failure on first-line therapy with gemcitabine. Patients and Methods: Thirty-three patients with gemcitabine-refractory, metastatic pancreatic cancer were treated continuously with RAD001 at 10 mg daily. Prior treatment with fluorouracil in the perioperative setting was allowed. Patients were observed for toxicity, treatment response, and survival. Results: Treatment with single-agent RAD001 was well-tolerated; the most common adverse events were mild hyperglycemia and thrombocytopenia. No patients were removed from the study because of drug-related adverse events. No complete or partial treatment responses were noted, and only seven patients (21%) had stable disease at the first restaging scans performed at 2 months. Median progression-free survival and overall survival were 1.8 months and 4.5 months, respectively. One patient (3%) had a biochemical response, defined as ≥ 50% reduction in serum CA19-9. Conclusion: Although well-tolerated, RAD001 administered as a single-agent had minimal clinical activity in patients with gemcitabine-refractory, metastatic pancreatic cancer. Future studies in metastatic pancreatic cancer should assess the combination of mTOR inhibitors with other agents and/or examine inhibitors of other components of the PI3K/Akt/mTOR pathway.
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Single-agent phase II trials of the mTOR inhibitors temsirolimus and everolimus demonstrated minimal clinical activity.
“In single agent phase II trials of the mTOR inhibitors temsirolimus and everolimus, very little clinical activity was seen (90, 91).”
From KRAS mutation in pancreatic cancer (2021) · cites this paper as [91]
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- Authors
- Wolpin, B. M., Hezel, A. F., Abrams, T., Blaszkowsky, L. S., Meyerhardt, J. A., Chan, J. A., Enzinger, P. C., Allen, B., Clark, J. W., Ryan, D. P., & Fuchs, C. S.
- Affiliations
- Brigham and Women's Hospital (US)
- ORCID
- Venue
- Journal of Clinical Oncology
- Published
- 2009-01-10
- Volume
- 27
- Issue
- 2
- Pages
- 193-198
- ISSN
- 0732-183X (ISSN-L)
- 1527-7755
- PMC
- PMC2645085
- OpenAlex
- W2154108823
- Cited by
- 297
- References
- 48
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 7 · 2023: 8 · 2022: 19 · 2021: 14 · 2020: 15 · 2019: 13 · 2018: 13 · 2017: 21 · 2016: 14 · 2015: 34 · 2014: 24 · 2013: 17 · 2012: 26
- FWCI
- 10.75
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Clinical Oncology (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Cancer Institute (P50CA127003, T32 CA09001, P01 CA 55075, P01CA087969, P01CA055075, P01 CA124908, [P01 CA87969, T32CA009001)
- Topics
- Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
- Health Sciences › Medicine › Surgery › Pancreatitis Pathology and Treatment
- Keywords
- everolimus, mTOR inhibitors, metastatic pancreatic cancer, gemcitabine-refractory disease, PI3K/AKT/mTOR pathway, monotherapy, treatment toxicity, progression-free survival, CA19-9 response, hyperglycemia, thrombocytopenia
- MeSH terms
- Everolimus, Phosphoinositide-3 Kinase Inhibitors, Gemcitabine, Administration, Oral, Adult, Aged, Deoxycytidine, Female, Humans, Male, Middle Aged, Pancreatic Neoplasms, Protein Kinases, Signal Transduction, Drug Resistance, Neoplasm, Phosphatidylinositol 3-Kinases, Sirolimus, Oncogene Protein v-akt, TOR Serine-Threonine Kinases
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