Maturity-onset diabetes of the young resulting from a novel mutation in the HNF-4α gene

Kazuo Hara, Mitsuhiko Noda, Hironori Waki, Kazuyuki Tobe, Toshimasa Yamauchi, Hiroko Kadowaki, Hiroaki Satou, Kazuhisa Tsukamoto, Shinya Nagamatsu, Kazuhiro Yamagata, Yuji Matsuzawa, Yasuo Akanuma, Satoshi Kimura, Takashi Kadowaki

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A 52-year-old woman with early-onset diabetes mellitus, severe diabetic retinopathy, and a family history of a dominant inheritance pattern was referred to our hospital. Direct sequencing revealed a novel mutation in the HNF-4α gene (R244Q). The position of the mutation in the amino-acid sequence of the gene is well conserved among species and transcriptional activity of the mutant gene was significantly reduced. Therefore, a diagnosis of maturity-onset diabetes of the young (MODY)-1 was made. Genetic testing enabled early diagnosis of diabetes in the patient's 20-year-old daughter, which we consider to be important for the prevention of diabetic complications.

Original languageEnglish
Pages (from-to)848-852
Number of pages5
JournalInternal Medicine
Volume41
Issue number10
DOIs
StatePublished - 1 Oct 2002
Externally publishedYes

Keywords

  • Direct sequencing
  • Genetic counseling
  • Genetic testing
  • Transcriptional activity
  • β-cell function

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