TACH101 (Zavondemstat, QC8222, TACH 101) is a reversible, α-ketoglutarate competitive, selective and potent inhibitor of KDM4 isoforms A-D with IC50 values of 80 nM against all four isoforms.
TACH101 weakly inhibits KDM5 family members with IC50 of 140-400 nM, and shows significantly lower potency against KDM2, KDM3, KDM6, and KDM7 family members.
TACH101 demonstrated potent increase of H3K36me3 levels (EC50 <0.001 uM, HTRF) in KYSE-150 cell line engineered to overexpress KDM4C and showed potent anti-proliferative activity in multiple cell lines in OncoPanel.
Sub-micromolar levels of TACH101 induced apoptosis in human colorectal (HT-29), esophageal (KYSE-150), and triple negative breast cancer (MDA-MB-231) cell lines with EC50s of 0.033-0.092 uM.
TACH101 triggered effective tumor growth control in xenograft models including colorectal, esophageal, gastric, breast, and lymphoma with tumor growth inhibition of up to 100%.