Beigene Co. Ltd. has presented data on a CDK4 selective inhibitor, BGB-43395, for the potential treatment of this cancer type and which would reduce the neutropenia associated with CDK6 inhibition.

In tumoral cells, the modulation of the G1/S phases of cell cycle is destabilized by amplification and high expression of cyclin E (CCNE) or by mutation or loss of retinoblastoma 1 (RB1) gene. Cancer cells meeting these characteristics have been sown to be highly sensitive to cyclin-dependent kinase 2 (CDK2) depletion.