Aktis Oncology Inc. has obtained IND approvals from the FDA enabling the company to proceed to a phase Ib trial with AKY-2519, a miniprotein radioconjugate targeting B7-H3-expressing tumors, including prostate, lung and other solid tumors. Specifically, the IND clearances relate to [64Cu]Cu-AKY-2519 for imaging and [225Ac]Ac-AKY-2519 for therapeutic use.