Mutations in the RET proto-oncogene are associated with MEN 2A and FMTC. - Donis-Keller,H.; Dou,S.; Chi,D.; Carlson,KM.; Toshima,K.; Lairmore,TC.; Howe,JR.; Moley,JF.; Goodfellow,P.; Wells,SA. (Hum Mol Genet, 1993)