RET and neoplasm: For example, the kinesin family 5B-RET gene rearrangement is the most commonly found in lung adenocarcinoma but is rare in other tumor types, while coiled-coil domain containing 6-RET rearrangements are common in PTC and several tumor types (Romei et al., 2016; Gautschi et al., 2017; Ferrara et al., 2018).