Ariceum Therapeutics GmbH’s radiopharmaceutical 225Ac-SSO110 ([225Ac]satoreotide tetraxetran) has been awarded orphan drug designation by the FDA for the treatment of small-cell lung cancer (SCLC). [225Ac]Satoreotide is a first-in-class Actinium-labeled somatostatin SST2 receptor antagonist.