Prexasertib

Prexasertib (LY2606368) is a small molecule checkpoint kinase inhibitor, mainly active against CHEK1, with minor activity against CHEK2. This causes induction of DNA double-strand breaks resulting in apoptosis. It was developed by Eli Lilly but the company announced in 2019 it was dropping prexasertib from active development, although clinical trials continue. Research continues into the efficacy of prexasertib in treatment of 
acute myeloid leukemia, myelodysplastic syndrome, rhabdomyosarcoma, and medulloblastoma.