Reference Detail

Ref Type

Journal Article

PMID

(31645440)

Authors

Sullivan RJ, Hollebecque A, Flaherty KT, Shapiro GI, Rodon Ahnert J, Millward MJ, Zhang W, Gao L, Sykes A, Willard MD, Yu D, Schade AE, Crowe K, Flynn DL, Kaufman MD, Henry JR, Peng SB, Benhadji KA, Conti I, Gordon MS, Tiu RV, Hong DS

Title

A Phase I Study of LY3009120, a Pan-RAF Inhibitor, in Patients with Advanced or Metastatic Cancer.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Molecular cancer therapeutics	19	2	2020 Feb	460-467	Mol Cancer Ther

URL

Abstract Text

Mutations in ERK signaling drive a significant percentage of malignancies. LY3009120, a pan-RAF and dimer inhibitor, has preclinical activity in RAS- and BRAF-mutated cell lines including BRAF-mutant melanoma resistant to BRAF inhibitors. This multicenter, open-label, phase I clinical trial (NCT02014116) consisted of part A (dose escalation) and part B (dose confirmation) in patients with advanced/metastatic cancer. In part A, oral LY3009120 was dose escalated from 50 to 700 mg twice a day on a 28-day cycle. In part B, 300 mg LY3009120 was given twice a day. The primary objective was to identify a recommended phase II dose (RP2D). Secondary objectives were to evaluate safety, pharmacokinetics, and preliminary efficacy. Identification of pharmacodynamic biomarkers was exploratory. In parts A and B, 35 and 16 patients were treated, respectively (N = 51). In part A, 6 patients experienced eight dose-limiting toxicities. The RP2D was 300 mg twice a day. Common (>10%) any-grade drug-related treatment-emergent adverse events were fatigue (n = 15), nausea (n = 12), dermatitis acneiform (n = 10), decreased appetite (n = 7), and maculopapular rash (n = 7). The median duration of treatment was 4 weeks; 84% of patients completed one or two cycles of treatment. Exposures observed at 300 mg twice a day were above the preclinical concentration associated with tumor regression. Eight patients had a best overall response of stable disease; there were no complete or partial clinical responses. Despite adequate plasma exposure levels, predicted pharmacodynamic effects were not observed.

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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
BRAF mutant	Advanced Solid Tumor	no benefit	LY3009120	Case Reports/Case Series	Actionable	In a Phase I trial, LY3009120 did not achieve expected pharmacodynamic effects, resulted in stable disease as best overall response in 5 of 12 patients with advanced or metastatic cancer harboring BRAF mutations (PMID: 31645440; NCT02014116).	31645440
NRAS mutant	Advanced Solid Tumor	no benefit	LY3009120	Case Reports/Case Series	Actionable	In a Phase I trial, LY3009120 did not achieve expected pharmacodynamic effects, resulted in stable disease as best overall response in 1 of 5 patients with advanced or metastatic cancer harboring NRAS mutations (PMID: 31645440; NCT02014116).	31645440