With longer term treatment, recurrent mutation G101V in Bcl-2 has been reported to mediate resistance to venetoclax in patients with CLL. Herein, we report the pharmacological properties of BGB-11417, a highly potent and selective BCL-2 inhibitor, in preclinical models. BGB-11417 potently inhibited both wildtype and G101V-mutated Bcl-2 in SPR binding assay with IC50 of 0.035 and 0.28 nM, respectively.