Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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Research Abstract |
The prevalence of congenital hypothyroidism (CH) due to biallelic DUOX2 mutations is 1/44,000 in Japan. In CH, the prevalence of biallelic DUOX2 mutations is 8/102 (7.8%).The inheritance mode of biallelic DUOX2 mutations is autosomal recessive. CH due to biallelic DUOX2 mutations has some characteristics as follows: It is permanent, transient, or late-onset. Clinical findings in neonatal period are severe, while they improve by the age of 2 years. Environmental factors such as maternal iodine exposure can affect clinical findings. Biochemical study does not always show defects of iodine organization. In contrast, monoallelic DUOX2 mutation rarely (<1%) develops CH. The inheritance mode of CH related to monoallelic DUOX2 mutation is multifactorial. 3.7 % of subjects having both monoallelic DUOX2 mutation and monoallelic TSHR mutation develop CH. I have established in vitro assay to characterize function of wild or mutant DUOX2 molecule.
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