Tenifatecan (also known as SN2310 or tocopherol succinate-SN38), camptothecin, is an injectable emulsion composed of vitamin E, a succinate derivative, as well as 7-ethyl-10-hydroxycamptothecin (SN-38), the active metabolite of irinotecan. It is known that SN-38 binds to and inhibits topoisomerase I by stabilizing the cleavable complex between topoisomerase I and DNA, resulting in DNA breaks, inhibition of DNA replication, and apoptosis. Tenifatecan successfully completed phase I clinical trial in patients with advanced solid tumors. Achieve Life Sciences, the company that is developing this drug, are currently exploring options to out-license tenifatecan.