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Ref Type Journal Article
PMID (27014780)
Authors Khawaja MR, Nick AM, Madhusudanannair V, Fu S, Hong D, McQuinn LM, Ng CS, Piha-Paul SA, Janku F, Subbiah V, Tsimberidou A, Karp D, Meric-Bernstam F, Lu KH, Naing A
Title Phase I dose escalation study of temsirolimus in combination with metformin in patients with advanced/refractory cancers.
Journal Cancer chemotherapy and pharmacology
Vol 77
Issue 5
Date 2016 05
Abstract Text Mammalian target of rapamycin (mTOR) inhibitors like temsirolimus may result in undesirable AKT upregulation. Metformin inhibits mTOR through different mechanisms and may enhance temsirolimus's antitumor activity. We conducted an open-label phase I dose escalation trial of this drug combination in patients with advanced/refractory cancers.Temsirolimus, 25 mg weekly, was combined with an escalating daily dose of metformin (level 1: 500; level 2: 1000; level 3: 1500; level 4: 2000 mg) by utilizing a standard 3 + 3 trial design. Treatment was administered in 28-day cycles following initial 2-week metformin titration during the first cycle.Twenty-one patients (median age, 56 years) with sarcoma (n = 8), colorectal (n = 3), endometrial (n = 4), uterine carcinosarcoma (n = 2), ovarian (n = 2), and other (n = 2) cancers were enrolled. Patients had received median of four prior systemic treatments. Two dose-limiting toxicities were observed (grade 3 mucositis, grade 3 renal failure); both patients continued treatment after dose modification. Fifty-six percent patients had stable disease as best response; clinical benefit rate was 22 %. Patients continued treatment for median of 11 weeks.Combination temsirolimus/metformin was well tolerated with modestly promising effectiveness among this heavily pretreated patient cohort. We recommend a dose of temsirolimus 25 mg weekly and metformin 2000 mg daily for phase II study.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
Unknown unknown Advanced Solid Tumor not applicable Metformin + Temsirolimus Phase I Actionable In a Phase I clinical trial, the combination of Torisel (temsirolimus) and Glucophage (metformin) demonstrated safety and resulted in a clinical benefit rate of 22% in patients with advanced or refractory tumors, with 4/18 patients achieving stable disease for greater than 6 cycles (PMID: 27014780). 27014780