Selpercatinib (also known as LOXO-292) is a highly selective RET inhibitor with activity against diverse RET fusions, activating RET mutations and brain metastasis. Phase 1/2 data from the LIBRETTO-001 trial presented at the IASLC 2019 World Conference on Lung Cancer demonstrates selpercatinib’s marked antitumor activity in RET fusion-position non-small cell lung cancer (NSCLC) patients. These findings, presented by Alexander Drilon, MD, principal investigator and Research Director of Early Drug Development at Memorial Sloan Kettering Cancer Center, will form the basis of an US Food and Drug Administration new drug application submission.