PMID- 10076558 OWN - NLM STAT- MEDLINE DCOM- 19990330 LR - 20211203 IS - 0910-5050 (Print) IS - 1876-4673 (Electronic) IS - 0910-5050 (Linking) VI - 90 IP - 1 DP - 1999 Jan TI - Two germline missense mutations at codons 804 and 806 of the RET proto-oncogene in the same allele in a patient with multiple endocrine neoplasia type 2B without codon 918 mutation. PG - 1-5 AB - Multiple endocrine neoplasia (MEN) type 2B is a clinically distinct entity among the autosomal dominant MEN 2 syndromes. Most patients with MEN 2B carry a germline mutation (M918T) of the RET proto-oncogene, while a few carry A883F. We examined a patient with MEN 2B, but without M918T or A883F, and her relatives. Here, we report the presence in this patient of 2 germline mutations, V804M and Y806C in the same allele. While the novel Y806C was inherited from her father, its carriers (her father and brother) was not affected by MEN 2. In contrast, V804M was a de novo mutation, that has been reported in patients with familial medullary thyroid carcinoma. Combinations of mutations of the RET proto-oncogene may cause oncogenic activities different from those of single mutations. FAU - Miyauchi, A AU - Miyauchi A AD - Kuma Hospital, Kobe. miyasan@gold.ocn.ne.jp FAU - Futami, H AU - Futami H FAU - Hai, N AU - Hai N FAU - Yokozawa, T AU - Yokozawa T FAU - Kuma, K AU - Kuma K FAU - Aoki, N AU - Aoki N FAU - Kosugi, S AU - Kosugi S FAU - Sugano, K AU - Sugano K FAU - Yamaguchi, K AU - Yamaguchi K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Jpn J Cancer Res JT - Japanese journal of cancer research : Gann JID - 8509412 RN - 0 (Codon) RN - 0 (Drosophila Proteins) RN - 0 (MAS1 protein, human) RN - 0 (Proto-Oncogene Mas) RN - 0 (Proto-Oncogene Proteins) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-ret) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) RN - EC 2.7.10.1 (Ret protein, Drosophila) RN - HG18B9YRS7 (Valine) SB - IM MH - Base Sequence MH - Codon/genetics MH - *Drosophila Proteins MH - Exons MH - Female MH - *Germ-Line Mutation MH - Humans MH - Male MH - Multiple Endocrine Neoplasia Type 2b/*genetics MH - *Mutation, Missense MH - Pedigree MH - Polymerase Chain Reaction MH - Proto-Oncogene Mas MH - Proto-Oncogene Proteins/*genetics MH - Proto-Oncogene Proteins c-ret MH - *Proto-Oncogenes MH - Receptor Protein-Tyrosine Kinases/*genetics MH - Valine PMC - PMC5925979 EDAT- 1999/03/17 00:00 MHDA- 1999/03/17 00:01 CRDT- 1999/03/17 00:00 PHST- 1999/03/17 00:00 [pubmed] PHST- 1999/03/17 00:01 [medline] PHST- 1999/03/17 00:00 [entrez] AID - S0910505099800209 [pii] AID - CAE1 [pii] AID - 10.1111/j.1349-7006.1999.tb00658.x [doi] PST - ppublish SO - Jpn J Cancer Res. 1999 Jan;90(1):1-5. doi: 10.1111/j.1349-7006.1999.tb00658.x.