Rickets is the failure of growing bone to mineralize. Many skeletal and radiographic changes can occur because of the lack of calcified osteoid and the buildup of unossified cartilage. Vitamin D-dependent rickets (VDDR) type I results from abnormalities in the gene coding for 25(OH)D3-1-alpha-hydroxylase and vitamin D 25-hydroxylase, and type II results from defective vitamin D receptors. Both diseases are rare autosomal recessive disorders characterized by hypocalcemia, secondary hyperparathyroidism and early onset severe rickets.
Category
Inherited metabolic disorder
Brite
Human diseases in ICD-11 classification [BR:br08403]
05 Endocrine, nutritional or metabolic diseases
Nutritional disorders
Undernutrition
5B57 Vitamin D deficiency
H01143 Vitamin D-dependent rickets
Pathway-based classification of diseases [BR:br08402]
Lipid/glycolipid metabolism
nt06034 Cholesterol biosynthesis
H01143 Vitamin D-dependent rickets
Yamamoto K, Uchida E, Urushino N, Sakaki T, Kagawa N, Sawada N, Kamakura M, Kato S, Inouye K, Yamada S
Title
Identification of the amino acid residue of CYP27B1 responsible for binding of 25-hydroxyvitamin D3 whose mutation causes vitamin D-dependent rickets type 1.