• J. Korean Med. Sci. · Aug 2011

    Case Reports

    Novel compound heterozygous mutations in the vitamin D receptor gene in a Korean girl with hereditary vitamin D resistant rickets.

    • Jun Kyu Song, Kyung Sik Yoon, Kye Shik Shim, and Chong-Woo Bae.
    • Department of Biochemistry and Molecular Biology, Kyung Hee University School of Medicine, Seoul, Korea.
    • J. Korean Med. Sci. 2011 Aug 1; 26 (8): 111111141111-4.

    AbstractHereditary vitamin D resistant rickets (HVDRR) is a rare genetic disorder caused by a mutation of vitamin D receptor (VDR) gene. A number of cases had been reported in many countries but not in Korea. We examined a three-year old Korean girl who had the typical clinical features of HVDRR including rickets, hypocalcemia, hypophosphatemia, elevated serum calcitriol level and secondary hyperparathyroidism. The girl and her father were both heterozygous for the 719C-to-T(I146T)---> c.437C > T(p.T1461) [corrected] mutation in exon 4, whereas she and her mother were both heterozygous for 754C-to-T (R154C)---> c.472 > T(p.R158C) [corrected] mutation in exon 5 of the VDR gene. In this familial study, we concluded that the girl had compound heterozygous mutations in her VDR gene which caused HVDRR. This is the first report of a unique mutation in the VDR gene in Korea.

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