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|Ref Type||Journal Article|
|Authors||Tolcher AW, Patnaik A, Papadopoulos KP, Rasco DW, Becerra CR, Allred AJ, Orford K, Aktan G, Ferron-Brady G, Ibrahim N, Gauvin J, Motwani M, Cornfeld M|
|Title||Phase I study of the MEK inhibitor trametinib in combination with the AKT inhibitor afuresertib in patients with solid tumors and multiple myeloma.|
|Journal||Cancer chemotherapy and pharmacology|
|Abstract Text||To identify the maximum tolerated dose (MTD) and recommended Phase II dose of MEK/AKT inhibitor combination of trametinib and afuresertib.Eligibility criteria were advanced solid tumors, 18 years or older, Eastern Cooperative Oncology Group performance status 0 or 1, and adequate organ function. Exclusion criteria included Type 1 diabetes, active GI disease, leptomeningeal disease, or current evidence/risk of retinal venous occlusion/central serous retinopathy. Clinical safety parameters and response were evaluated and analyzed.Twenty patients were enrolled. Dose-limiting toxicities (Grade 2 esophagitis; Grade 3 aspartate aminotransferase increased, mucosal inflammation and hypokalemia) were reported at starting dose (1.5 mg trametinib/50 mg afuresertib once daily continuously), exceeding the MTD. Subsequent de-escalation cohorts (1.5 mg/25 mg or 1.0 mg/50 mg trametinib/afuresertib) were defined as MTDs for continuous dosing. Intermittent dosing schedule [1.5 mg trametinib (continuous)/50 mg afuresertib (Days 1-10 every 28 days)] was evaluated and considered tolerable. No patients were enrolled in Phase II. The most common adverse events reported (≥10 % of all patients) included: diarrhea (60 %), dermatitis acneiform (55 %), maculo-papular rash (45 %), fatigue (30 %), dry skin (25 %), nausea (25 %), dyspnea (20 %), and vomiting (20 %). One partial response (BRAF wild-type melanoma) was reported; four patients had stable disease as best response.Continuous daily dosing of trametinib/afuresertib combination was poorly tolerated. Evaluation of intermittent dose schedule showed greater tolerability. Given the interest in combination treatment regimens of MAPK and PI3K/AKT pathway inhibitors, further study of intermittent dose schedule or combination of trametinib with more selective inhibitors may be warranted.|
|Molecular Profile||Treatment Approach|
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|Therapy Name||Drugs||Efficacy Evidence||Clinical Trials|
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|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||Afuresertib + Trametinib||Phase I||Actionable||In a Phase I trial, the combination of Mekinist (trametinib) and Afuresertib (GSK2110183) was not well-tolerated in patients with advanced solid tumors (PMID: 25417902).||25417902|