Disease: Vitamin D Hydroxylation-Deficient Rickets, Type 1B ×
Source: ALL
Disease Score gda Association Type Type Original DB Sentence supporting the association PMID PMID Year
CUI: C1838657
Disease: Vitamin D Hydroxylation-Deficient Rickets, Type 1B
Vitamin D Hydroxylation-Deficient Rickets, Type 1B 		0.010 GeneticVariation disease BEFREE Vitamin D requires a two-step activation by hydroxylation: The first step is catalyzed by hepatic 25-hydroxylase (CYP2R1, 11p15.2) and the second one is catalyzed by renal 1α-hydroxylase (CYP27B1, 12q13.1), which produces the active hormonal form of 1,25-(OH)<sub>2</sub> D. Mutations of CYP2R1 have been associated with vitamin D-dependent rickets type 1B (VDDR1B), a very rare condition that has only been reported to affect 4 families to date. 28548312 2017