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|Ref Type||Journal Article|
|Authors||Bendell JC, Javle M, Bekaii-Saab TS, Finn RS, Wainberg ZA, Laheru DA, Weekes CD, Tan BR, Khan GN, Zalupski MM, Infante JR, Jones S, Papadopoulos KP, Tolcher AW, Chavira RE, Christy-Bittel JL, Barrett E, Patnaik A|
|Title||A phase 1 dose-escalation and expansion study of binimetinib (MEK162), a potent and selective oral MEK1/2 inhibitor.|
|Journal||British journal of cancer|
|Date||2017 Feb 28|
|Abstract Text||Binimetinib (MEK162; ARRY-438162) is a potent and selective oral MEK 1/2 inhibitor. This phase 1 study determined the maximum tolerated dose (MTD), safety, pharmacokinetic and pharmacodynamic profiles, and preliminary anti-tumour activity of binimetinib in patients with advanced solid tumours, with expansion cohorts of patients with biliary cancer or KRAS- or BRAF-mutant colorectal cancer.Binimetinib was administered twice daily. Expansion cohorts were enroled after MTD determination following a 3+3 dose-escalation design. Pharmacokinetic properties were determined from plasma samples. Tumour samples were assessed for mutations in RAS, RAF, and other relevant genes. Pharmacodynamic properties were evaluated in serum and skin punch biopsy samples.Ninety-three patients received binimetinib (dose-escalation phase, 19; expansion, 74). The MTD was 60 mg twice daily, with dose-limiting adverse events (AEs) of dermatitis acneiform and chorioretinopathy. The dose for expansion patients was subsequently decreased to 45 mg twice daily because of the frequency of treatment-related ocular toxicity at the MTD. Common AEs across all dose levels included rash (81%), nausea (56%), vomiting (52%), diarrhoea (51%), peripheral oedema (46%), and fatigue (43%); most were grade 1/2. Dose-proportional increases in binimetinib exposure were observed and target inhibition was demonstrated in serum and skin punch biopsy samples. Three patients with biliary cancer had objective responses (one complete and two partial).Binimetinib demonstrated a manageable safety profile, target inhibition, and dose-proportional exposure. The 45 mg twice daily dose was identified as the recommended phase 2 dose. The three objective responses in biliary cancer patients are encouraging and support further evaluation in this population.|
|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|
|BRAF mutant||colorectal cancer||predicted - sensitive||Binimetinib||Phase I||Actionable||In a Phase I trial, Binimetinib (MEK162) treatment resulted in an estimated progression free survival of 1.4 months and overall survival of 7.1 months in colorectal cancer patients harboring BRAF mutations (PMID: 28152546).||28152546|
|Unknown unknown||biliary tract cancer||not applicable||Binimetinib||Phase I||Actionable||In a Phase I trial, Binimetinib (MEK162) treatment resulted in complete response in 3.3% (1/30) and partial response in 6.7% (2/30) of patients with biliary tract cancer, with estimated progression free survival of 2.1 months and overall survival of 4.8 months (PMID: 28152546).||28152546|
|Unknown unknown||Advanced Solid Tumor||not applicable||Binimetinib||Phase I||Actionable||In a Phase I trial, Binimetinib (MEK162) treatment resulted in complete response in 1% (1/91), partial response in 2% (2/91), and stable disease with median duration of 3.94 months in 36% (33/91) of patients with advanced solid tumors (PMID: 28152546).||28152546|
|NRAS mutant||biliary tract cancer||predicted - sensitive||Binimetinib||Phase I||Actionable||In a Phase I trial, Binimetinib (MEK162) treatment resulted in partial response in a biliary tract cancer patient harboring NRAS mutation (PMID: 28152546)||28152546|