PF-00477736 is a potent, selective ATP-competitive small-molecule inhibitor that inhibits Chk1 with a Ki of 0.49 nM. The compound abrogates cell cycle arrest induced by DNA damage and enhances cytotoxicity of clinically important chemotherapeutic agents, including gemcitabine and carboplatin.
PF-477736 may be effectively used to resensitize platinum resistant ovarian cancer cells.
[2] PF-477736 alone or in combination with other chemotherapeutic agents may be used to treat triple-negative breast cancer.
[3]