BAY-1895344 is a potent, selective, orally active ATR inhibitor with low-nanomolar potency; potently inhibits the proliferation of a broad spectrum of human tumor cell lines with mean IC50 of 78 nM; inhibits hydroxyurea-induced H2AX phosphorylation, exhibits strong in vivo anti-tumor efficacy in monotherapy in a variety of xenograft models.Blood Cancer,Phase 1 Clinical

Camonsertib (RP-3500) is a novel, potent and selective ATR kinase inhibitor (ATRi) that exhibits potent antitumor effects with an IC50: 1.00 nM in biochemical assays.

GSK 635416A is a novel ATM inhibitor with highly selective radiosensitizing activity, inhibits radiation induced phosphorylation of ATM.