A mutation in the RET proto-oncogene associated with multiple endocrine neoplasia type 2B and sporadic medullary thyroid carcinoma. - Hofstra,R.M.; Landsvater,R.M.; Ceccherini,I.; Stulp,R.P.; Stelwagen,T.; Luo,Y.; Pasini,B.; Hoppener,J.WM.; van Amstel,H.KP.; Romeo,G.; Lips,C.JM.; Buys,C.HCM. (Nature, 1994)