From serendipity to intention: development of brain penetrant PARP1 selective inhibitors.

Primary and secondary brain tumors cause significant mortality and constitute an important unmet need. The development of AZD9574, a brain-penetrant, PARP1 selective inhibitor, with favorable pharmacologic properties and intriguing preclinical activity, has led to an ongoing clinical trial evaluating it alone and in combination with temozolomide or antibody drug conjugates.