RET and colonic neoplasm: As shown in Fig. 5b, we found that RET mutants G533C was particularly efficient in generating RET dimers in transfected HEK293 cells comparable to the positive control (PC), suggesting that the oncogenic mechanism whereby RET mutant G533C contribute to colon cancer development is through an increase in the amount of covalently linked dimers induced by the presence of the unpaired cysteine induced by the mutation.