PMID- 10915003 OWN - NLM STAT- MEDLINE DCOM- 20001130 LR - 20191025 IS - 0753-3322 (Print) IS - 0753-3322 (Linking) VI - 54 Suppl 1 DP - 2000 Jun TI - Absence of somatic RET gene mutation in sporadic parathyroid tumors and hyperplasia secondary to uremia, and absence of somatic Men1 gene mutation in MEN2A-associated hyperplasia. PG - 100s-103s AB - Germline mutations of the MEN1 gene are found in more than 85% of multiple endocrine neoplasia type 1 (MEN 1) patients, and germline mutations of the RET gene are found in more than 95% of multiple endocrine neoplasia type 2 (MEN2) patients. Parathyroid hyperplasia is seen in more than 90% of MEN 1 and about 15% of MEN2A patients. To date, somatic MEN1 mutations are reported in about 20% of sporadic parathyroid tumors. To elucidate the genetic basis of parathyroid tumor development, we examined somatic RET gene mutations in sporadic parathyroid tumors and hyperplasia secondary to uremia, and somatic MEN1 gene mutations in parathyroid hyperplasia from MEN2A patients. A total of 145 parathyroid tumors comprising 129 sporadic parathyroid tumors, 14 hyperplastic lesions secondary to uremia, and two hyperplastic lesions from MEN2A patients were examined. DNA was extracted from fresh frozen parathyroid tissue. Exons 2-10 of the MEN1 gene and exons 10 and 11 of the RET gene were sequenced. No somatic RET gene mutations were found in the 129 sporadic parathyroid tumors or 14 parathyroid hyperplastic lesions secondary to uremia. No somatic MEN1 gene mutations were found in the two parathyroid hyperplasia from MEN2A patients. These data suggest that RET gene mutation may not be involved in the development of sporadic parathyroid tumors and hyperplasia secondary to uremia and that MEN1 gene mutation may not be or is rarely associated with development of parathyroid hyperplasia in MEN2A patients. FAU - Uchino, S AU - Uchino S AD - Noguchi Thyroid Clinic and Hospital Foundation, Beppu, Oita, Japan. FAU - Noguchi, S AU - Noguchi S FAU - Nagatomo, M AU - Nagatomo M FAU - Sato, M AU - Sato M FAU - Yamashita, H AU - Yamashita H FAU - Yamashita, H AU - Yamashita H FAU - Watanabe, S AU - Watanabe S FAU - Murakami, T AU - Murakami T FAU - Toda, M AU - Toda M FAU - Wakiya, S AU - Wakiya S FAU - Adachi, M AU - Adachi M LA - eng PT - Clinical Trial PT - Journal Article PL - France TA - Biomed Pharmacother JT - Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie JID - 8213295 RN - 0 (Drosophila Proteins) RN - 0 (Proto-Oncogene Proteins) RN - 9007-49-2 (DNA) 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) SB - IM MH - Aged MH - DNA/genetics/isolation & purification MH - *Drosophila Proteins MH - Exons/genetics MH - Female MH - Humans MH - Hyperplasia/metabolism MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Multiple Endocrine Neoplasia Type 2a/*genetics MH - Mutation/*genetics MH - Parathyroid Neoplasms/*genetics MH - Proto-Oncogene Proteins/*genetics MH - Proto-Oncogene Proteins c-ret MH - Receptor Protein-Tyrosine Kinases/*genetics MH - Uremia/*genetics/metabolism EDAT- 2000/07/29 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/07/29 11:00 PHST- 2000/07/29 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/07/29 11:00 [entrez] AID - S0753-3322(00)80023-2 [pii] AID - 10.1016/s0753-3322(00)80023-2 [doi] PST - ppublish SO - Biomed Pharmacother. 2000 Jun;54 Suppl 1:100s-103s. doi: 10.1016/s0753-3322(00)80023-2.