Cobimetinib (GDC-0973, RG7420) 是有效，选择性，可口服的 MEK1 抑制剂，抑制MEK1 的 IC₅₀ 为4.2 nM。

Cobimetinib (GDC-0973, RG7420) is a potent, selective and oral MEK1 inhibitor with an IC 50 of 4.2 nM for MEK1.

Solid

MEK1 4.2 nM (IC50)

The EC50 values of Cobimetinib (GDC-0973) for 888MEL and A2058 cells are 0.2 μM, 10 μM, respectivelly. Melanoma cells are treated with EC50 concentration of MEK and PI3K inhibitors for 24 hours (888MEL: 0.05 μM GDC-0973, 2.5 μM GDC-0941; A2058: 2.5 μM GDC-0973, 2.5 μM GDC-0941). Mitochondrial OXPHOS limits cell death induced by cobimetinib (100 nM) in melanoma with constitutive MAPK activation in A375 cells. has not independently confirmed the accuracy of these methods. They are for reference only.

In the NCI-H2122 KRASG12C mutant non-small cell lung carcinoma (NSCLC) xenograft model, treatment with up to 5 mg/kg Cobimetinib (GDC-0973) lead to moderate TGI and at 10 mg/kg approaches tumor stasis. GDC-0973 and GDC-0941 are administered to A2058 tumor-bearing mice daily (QD) or every third day (Q3D) either as single agents or in combination. The population rate constants associated with tumor growth inhibition for GDC-0973 and GDC-0941 are 0.00102 and 0000651 μM h, respectively. Following single doses of GDC-0973 (1, 3, or 10 mg/kg, p.o.) estimated in vivo IC 50 values of %pERK decrease based on tumor concentrations in xenograft mice are 0.78 (WM-266-4) and 0.52 μM (A375). has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years；4°C 2 years

[1]. Hoeflich KP, et al. Intermittent administration of MEK inhibitor GDC-0973 plus PI3K inhibitor GDC-0941 triggers robust apoptosis and tumor growth inhibition. Cancer Res. 2012 Jan 1;72(1):210-9.
[2]. Choo EF, et al. PK-PD modeling of combination efficacy effect from administration of the MEK inhibitor GDC-0973 and PI3K inhibitor GDC-0941 in A2058 xenografts. Cancer Chemother Pharmacol. 2013 Jan;71(1):133-43.

In Vitro: DMSO : 50 mg/mL (94.11 mM; ultrasonic and warming and heat to 60°C)H₂O : < 0.1 mg/mL (ultrasonic;warming;heat to 60°C) (insoluble)配制储备液