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Novel V184EMEN1 germline mutation in a Japanese kindred with familial hyperparathyroidism

✍ Scribed by Fujimori, Minoru; Shirahama, Shuya; Sakurai, Akihiro; Hashizume, Kiyoshi; Hama, Yoshihisa; Ito, Ken-ichi; Shingu, Kiyoshi; Kobayashi, Shinya; Amano, Jun; Fukushima, Yoshimitsu

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 8 KB
Volume: 80
Category: Article
ISSN: 0148-7299
DOI: 10.1002/(sici)1096-8628(19981116)80:3<221::aid-ajmg8>3.0.co;2-1

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✦ Synopsis

We studied the MEN1 gene in a kindred where three patients (the proposita and two of her sons) were affected with hyperparathyroidism. By polymerase chain reaction (PCR)-based direct sequencing of 10 exons of MEN1, a novel germline mutation was identified in the proposita. This mutation, a T-to-A transition at codon 184 in exon 3, predicts an amino acid change from valine to glutamine (V184E). PCR-single-strand conformational polymorphism (PCR-SSCP) analysis of exon 3 followed by sequencing showed the same mutation in the two sons, and in two clinically normal granddaughters of an affected son. Since the T-to-A substitution segregated with the disorder in the kindred except for the granddaughters and it was not detected in 100 alleles from 50 normal individuals, the change observed in MEN1 is not a polymorphism, but causes familial hyperparathyroidism. Thus the two grandchildren with the mutation were diagnosed as presymptomatic carriers. Am.

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