CAL-101 (Idelalisib, GS-1101)是一种选择性p110δ抑制剂，IC50为2.5 nM；作用于p110δ比作用于p110α/β/γ选择性高40到300倍，作用于p110δ比作用于C2β， hVPS34， DNA-PK和mTOR选择性高400到4000倍。Phase 3。A potent PI3K p110δ inhibitor CAL-101 (Idelalisib, GS-1101) is a selective p110δ inhibitor with IC50 of 2.5 nM; shown to have 40- to 300-fold greater selectivity for p110δ thanp110α/β/γ, and 400- to 4000-fold more selectivity to p110δ than C2β, hVPS34, DNA-PK and mTOR. A potent PI3K p110δ inhibitor