[Vitamin D dependency and its treatment].

Abstract

Vitamin D dependency is classified to vitamin D-dependent rickets type 1 which shows defective 1,25(OH)(2)D production, and vitamin D-dependent rickets type 2 which shows end-organ unresponsiveness to 1,25(OH)(2)D. Recent advance in the molecular analysis of these diseases revealed variety in the presentation and in the inheritance patterns. Molecular diagnosis would be preferable for adequate therapy especially in type 2.