Genomic Biomarkers Predicting Response to Selective CDK4/6 Inhibition: Progress in an Elusive Search.

In this issue of Cancer Cell, Gong et al. have analyzed the sensitivity of 560 cell lines to the selective CDK4/6 inhibitor abemaciclib and have defined cancers with specific genomic "D-cyclin activating features (DCAF)" as particularly vulnerable. These findings will facilitate patient selection as development of this drug class continues.