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Ref Type Journal Article
PMID (26106072)
Authors Lara PN, Longmate J, Mack PC, Kelly K, Socinski MA, Salgia R, Gitlitz B, Li T, Koczywas M, Reckamp KL, Gandara DR
Title Phase II Study of the AKT Inhibitor MK-2206 plus Erlotinib in Patients with Advanced Non-Small Cell Lung Cancer Who Previously Progressed on Erlotinib.
URL
Abstract Text Preclinical modeling in non-small cell lung cancer (NSCLC) showed that stimulation with hepatocyte growth factor (HGF), the ligand for MET, could reverse the cytostatic and cytotoxic effects of the EGFR inhibitor erlotinib in erlotinib-sensitive cell lines. Inhibitors of AKT signaling mitigated this HGF-mediated resistance, partially restoring erlotinib activity. We conducted a phase II trial of erlotinib plus MK-2206, a highly selective inhibitor of AKT, in NSCLC patients.Eligible patients must have progressed following prior benefit from erlotinib, defined as response or stable disease > 12 weeks. Treatment consisted of erlotinib 150 mg orally every day + MK-2206 45 mg orally every alternate day on a 28-day cycle. Primary endpoints were RECIST response rate > 30% (stratum 1: EGFR mutant) and disease control rate (DCR) > 20% at 12 weeks (stratum 2: EGFR wild-type).Eighty patients were enrolled, 45 and 35 in stratum 1 and 2, respectively. Most common attributable adverse events (all grade 3) were rash, diarrhea, fatigue, and mucositis. Response and DCR were, respectively, 9% and 40% in stratum 1; 3% and 47% in stratum 2. Median progression-free survival was 4.4 months in stratum 1 and 4.6 months in stratum 2.Combination MK-2206 and erlotinib met its primary endpoint in erlotinib-pretreated patients with EGFR wild-type NSCLC. Although activity was seen in EGFR-mutated NSCLC, this did not exceed a priori estimates. AKT pathway inhibition merits further clinical evaluation in EGFR wild-type NSCLC.

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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