Avitinib maleate is a pyrrolopyrimidine-based irreversible epidermal growth factor receptor (EGFR) inhibitor with an IC50 of 7.68 nM.
IC50&Target
EGFR
7.68 nM (IC50)
体外研究
Avitinib is structurally distinct from previously reported pyrimidine-based irreversible EGFR inhibitors such as osimertinib and rociletinib. Avitinib is designed specifically to inhibit EGFR active mutations and the T790M acquired resistant mutation, while sparing wild type EGFR. Avitinib selectively inhibits EGFR active and T790M mutations with up to 298-fold increase in potency compared to wild-type EGFR. Avitinib exhibits potent inhibitory activity with IC50 value of 0.18 nM against EGFR L858R/T790M double mutations, nearly 43-fold greater potency over wild-type EGFR (IC50=7.68 nM). Avitinib selectively inhibits mutant EGFR phosphorylation with IC50 values of 7.3 nM and 2.8 nM in NCI-H1975 and NIH/3T3_TC32T8 cells, about 115- and 298-fold more sensitive than that of the inhibition of wild type EGFR in A431.
体内研究
Oral administration of avitinib at daily dose of 500 mg/kg results in complete remission of tumors with EGFR active and T790M mutations for over 143 days with no weight loss. Three major metabolites of avitinib are tested and show no wild-type EGFR inhibition and off-target effects such as inhibition of IGF-1R. Avitinib is safe in non-small cell lung cancer (NSCLC) patients at the dose range between 50 mg and 550 mg once per day and no hyperglycemia and other severe adverse effects are detected such as grade 3 QT prolongation.
分子式
C30H30FN7O6
分子量
603.60
CAS号
1557268-88-8
中文名称
艾维替尼马来酸盐
运输条件
Room temperature in continental US; may vary elsewhere.
储存方式
Powder
-20°C
3 years
4°C
2 years
In solvent
-80°C
6 months
-20°C
1 month
溶解性数据
In Vitro:
DMSO : ≥ 100 mg/mL (165.67 mM)
H2O : < 0.1 mg/mL (ultrasonic;warming;heat to 60°C) (insoluble)