A transbronchial tumor biopsy showed adenocarcinoma of the lung (Figure 3). DNA- and RNA-based next-generation sequencing of 648 tumor-associated genes (Tempus xT™ Version 4) identified a KIF5B-RET fusion and no other activating genomic aberrations….After the completion of neoadjuvant selpercatinib, the tumor decreased from 3.1 to 2.9 cm (Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 stable disease...