label: vitamin D-dependent rickets, type 2A
label_lc: vitamin d-dependent rickets, type 2a
description: "Rickets caused by a defect in the VDR gene, encoding the vitamin D receptor. This form of rickets is characterized by hypocalcemia, elevated 1,25-dihydroxyvitamin D (calcitriol) concentrations and may also manifest with alopecia."