Reference Detail

Ref Type

Journal Article

PMID

(25417902)

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	Vol	Issue	Date	Pages	Journal Short Title
Cancer chemotherapy and pharmacology	75	1	2015 Jan	183-9	Cancer Chemother Pharmacol

URL

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.

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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