hrp0086fc15.4 | Late Breaking | ESPE2016

Vitamin D-Dependent Rickets Type 1 Caused by Mutations in CYP27B1 Affecting Protein Interactions with Adrenodoxin

Legeza Balazs , Ma Nina , Zalewski Adam , Renthal Nora , Fluck Christa , Pandey Amit

Background: CYP27B1 converts 25-hydroxyvitamin D3 to active 1,25-dihydroxyvitamin D3, playing a vital role in calcium homeostasis and bone growth. Vitamin D-dependent rickets type 1 (VDDR-1) is a rare autosomal recessive disorder caused by mutations in CYP27B1.Objective and hypotheses: Enzymatic and structural analysis of mutations in a patient with calcipenic rickets.Method: Two siblings presented with calcip...