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Mutational analysis of theDTDST gene in a fetus with achondrogenesis type 1B

✍ Scribed by Cai, Guiming; Nakayama, Masahiro; Hiraki, Yuji; Ozono, Keiichi

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 11 KB
Volume: 78
Category: Article
ISSN: 0148-7299
DOI: 10.1002/(sici)1096-8628(19980616)78:1<58::aid-ajmg12>3.0.co;2-n

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✦ Synopsis

We describe a diastrophic dysplasia (DTDST) gene mutation in a Japanese male fetus with achondrogenesis type 1B and his relatives. Diagnosis in the fetus was based on roentgenographic data and pathological findings of bones and cartilage. Nucleotide sequencing of the DTDST gene demonstrated that the fetus was homozygous for both delVal340 and Thr689Ser and his parents and a healthy brother were heterozygous for the mutations. The former mutation was reported previously in patients with achondrogenesis type 1B, and the latter was detected in 5 alleles of 26 healthy Japanese individuals. These data suggest that delVal340 is associated with achondrogenesis type 1B in the Japanese, whereas a serine to threonine substitution is most likely polymorphic. Am.

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