Small molecule ATM inhibitors as potential cancer therapy: a patent review (2003–present)

ATM kinase is a promising target for cancer therapy. Small-molecule ATM kinase inhibitors hold significant potential in cancer treatment by enhancing the efficacy of existing DNA-damaging therapies. Patent analysis revealed that the majority of these compounds contain imidazo[4,5-c]quinolinone scaffold or its bioisosteric variations which are optimal in terms of good ATM inhibitory activity and selectivity over closely related enzymes. Clinical trials explore combinations with RT or DNA-targeted compounds like PARP inhibitors, which induce DSBs. The medicinal chemistry field anticipates that these therapeutic options will soon be available on the pharmaceutical market.