hrp0082p1-d3-46 | Bone (1) | ESPE2014

Loss of Function CYP24A1 Mutations in Patients with Hypercalcemia and Low Pth level: an Autosomal Dominant or Recessive Trait?

Molin Arnaud , Baudouin Roseline , Coudray Nadia , Figueres Marie-Lucille , Jones Glennville , Kottler Marie-Laure

Background: Homozygous or compound heterozygous mutations of gene CYP24A1 have recently been reported to cause idiopathic infantile hypercalcemia due to increased intestinal absorption of calcium. However, an autosomal dominant transmission with partial penetrance of the trait was also suggested.Objective and hypotheses: Evaluation of the frequency of CYP24A1 mutation and evaluation of the impact of heterozygous mutation on calcium meta...