NTRK fusions: NTRK1, NTRK2, and NTRK3 are actionable drivers of tumor growth [115,116], and these genes encode the tropomyosin receptor kinase (TRK) family of receptor tyrosine kinases, proteins TRKA, TRKB, and TRKC, respectively. The gene discussed is NTRK1; the disease is neoplasm.