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Vitamin D-Binding Protein Deficiency and Homozygous Deletion of the GC Gene
被引:43
作者:
Henderson, Clark M.
[1
]
Fink, Susan L.
[1
]
Bassyouni, Hanan
[4
]
Argiropoulos, Bob
[5
]
Brown, Lindsay
[7
]
Laha, Thomas J.
[1
]
Jackson, Konner J.
[1
]
Lewkonia, Raymond
[6
]
Ferreira, Patrick
[6
]
Hoofnagle, Andrew N.
[1
,2
,3
]
Marcadier, Julien L.
[6
]
机构:
[1] Univ Washington, Dept Lab Med, Seattle, WA 98195 USA
[2] Univ Washington, Dept Med, Seattle, WA USA
[3] Univ Washington, Kidney Res Inst, Seattle, WA 98195 USA
[4] Univ Calgary, Dept Endocrinol & Metab, Calgary, AB, Canada
[5] Univ Calgary, Alberta Childrens Hosp Res Inst, Calgary, AB, Canada
[6] Alberta Childrens Prov Gen Hosp, Div Med Genet, 28 Oki Dr, Calgary, AB T3B 6A8, Canada
[7] Childrens & Womens Hlth Ctr British Columbia, Dept Pathol, Vancouver, BC, Canada
基金:
美国国家卫生研究院;
关键词:
D METABOLITES;
SERUM;
AFFINITY;
D O I:
10.1056/NEJMoa1807841
中图分类号:
R5 [内科学];
学科分类号:
1002 ;
100201 ;
摘要:
A 58-year-old woman with debilitating ankylosing spondylitis who was born to consanguineous parents was found to have an apparent severe vitamin D deficiency that did not respond to supplementation. Liquid chromatography-tandem mass spectrometry showed the absence of circulating vitamin D-binding protein, and chromosomal microarray confirmed a homozygous deletion of the group-specific component (GC) gene that encodes the protein. Congenital absence of vitamin D-binding protein resulted in normocalcemia and a relatively mild disruption of bone metabolism, in this case complicated by severe autoimmune disease.
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页码:1150 / 1157
页数:8
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