PMID- 18601604 OWN - NLM STAT- MEDLINE DCOM- 20080904 LR - 20161018 IS - 1434-6621 (Print) IS - 1434-6621 (Linking) VI - 46 IP - 6 DP - 2008 TI - A novel MEN1 frameshift germline mutation in two Italian monozygotic twins. PG - 824-6 LID - 10.1515/CCLM.2008.165 [doi] AB - BACKGROUND: This report describes clinical, biochemical and molecular findings regarding two Italian monozygotic twins carrying a novel multiple endocrine neoplasia type 1 (MEN1) mutation inherited from their mother. METHODS: Clinical, biochemical and genetic evaluations of the above-mentioned family members were performed. RESULTS: All three members were heterozygous for a deletion involving the first nucleotide at codon 98 in exon 2 of the MEN1 gene, which results in early termination of the protein. The clinical phenotypes were as follows: one out of the two twins suffered from insulinoma and hyperparathyroidism, while the second one was asymptomatic. Furthermore, the mother suffered from hyperparathyroidism, as well as from hypergastrinemia for several years before the daughter was diagnosed of MEN-1. CONCLUSIONS: We describe a family with a new heterozygous mutation (g.292delC) in the MEN1 gene not described previously. The mutation leads to a truncated protein without activity, explaining the clinical picture of this family. FAU - Concolino, Paola AU - Concolino P AD - Laboratory of Molecular Biology, Institute of Biochemistry and Clinical Biochemistry, Catholic University, Rome, Italy. FAU - Rossodivita, Aurora AU - Rossodivita A FAU - Carrozza, Cinzia AU - Carrozza C FAU - Raffaelli, Marco AU - Raffaelli M FAU - Lombardi, Celestino Pio AU - Lombardi CP FAU - Rigante, Donato AU - Rigante D FAU - Pitocco, Dario AU - Pitocco D FAU - Stabile, Achille AU - Stabile A FAU - Bellantone, Rocco AU - Bellantone R FAU - Zuppi, Cecilia AU - Zuppi C FAU - Capoluongo, Ettore AU - Capoluongo E LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Clin Chem Lab Med JT - Clinical chemistry and laboratory medicine JID - 9806306 SB - IM MH - Adolescent MH - Diseases in Twins/*genetics MH - Family MH - Female MH - *Frameshift Mutation MH - *Germ-Line Mutation MH - Humans MH - Hyperparathyroidism, Primary/diagnosis/genetics/metabolism MH - Insulinoma/diagnosis/genetics/metabolism MH - Multiple Endocrine Neoplasia Type 1/*genetics/metabolism MH - Pancreatic Neoplasms/diagnosis/genetics/metabolism MH - Twins, Monozygotic EDAT- 2008/07/08 09:00 MHDA- 2008/09/05 09:00 CRDT- 2008/07/08 09:00 PHST- 2008/07/08 09:00 [pubmed] PHST- 2008/09/05 09:00 [medline] PHST- 2008/07/08 09:00 [entrez] AID - 10.1515/CCLM.2008.165 [pii] AID - 10.1515/CCLM.2008.165 [doi] PST - ppublish SO - Clin Chem Lab Med. 2008;46(6):824-6. doi: 10.1515/CCLM.2008.165.