Acetamide, N-[7-[(3R)-3-[[5-chloro-4-[[2-[(1-methylethyl)sulfonyl]phenyl]amino]-2-pyrimidinyl]amino]-1-piperidinyl]heptyl]-2-[[2-(2,6-dioxo-3-piperidinyl)-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]oxy]-

BSJ-4-116 is a PROTAC connected by ligands for Cereblon and CDK. BSJ-4-116 is a highly potent and selective CDK12 degrader (PROTAC) with an IC50 of 6 nM. BSJ-4-116 downregulates DDR genes through a premature termination of transcription, primarily through increasing poly(adenylation). BSJ-4-116 exhibits potent antiproliferative effects, alone and in combination with the poly(ADP-ribose) polymerase inhibitor Olaparib (HY-10162)[1].

BSJ-4-116 is a highly potent and selective CDK12 degrader (PROTAC) with an IC50 of 6 nM. BSJ-4-116 downregulates DDR genes through a premature termination of transcription, primarily through increasing poly(adenylation). BSJ-4-116 exhibits potent antiproliferative effects, alone and in combination with the poly(ADP-ribose) polymerase inhibitor Olaparib [1]. BSJ-4-116 (10-10000 nM; 72 hours) exhibits potent antiproliferative effects in Kelly CDK12C1039F[1].BSJ-4-116 (50 nM; 6-24 hours) decreases the level of CDK12 protein, regardless of the mutational status of the cell line[1].BSJ-4-116 inhibits the growth of T-ALL cells (Jurkat and MOLT-4 cells) and sensitizes them to PARP inhibition[1]. BSJ-4-116 regulates DDR genes via poly(adenylation). BSJ-4-116 overcomes CDK12C1039F mutation. BSJ-4-116 represents the first example of resistance to a bivalent degrader molecule that is a consequence of an acquired point mutation in the target protein[1].

CDK12: 6 nM (IC₅₀); Cereblon

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[1]. Jiang B, et al. Discovery and resistance mechanism of a selective CDK12 degrader. Nat Chem Biol. 2021;17(6):675-683.