However, some of the mostdramatic vascular manifestations observed occur in a group of rare disorders whichincludes Arterial Tortuosity Syndrome (ATS; MIM #208050), Loeys-Dietz Syndrome (LDS;MIM #609192) and Autosomal Recessive Cutis Laxa (ARCL) type I. ATS is an autosomalrecessive disorder attributed to mutations in the SLC2A10 gene (chromosome 20q13)[GenBank:AF321240.1] [1]; LDS is an autosomal dominant disorder associated with heterozygousmutations in genes encoding the transforming growth factor beta receptors (TGFBR) 1and 2 [GenBank:GU143401.1 and GU143402.1] [2]. This evidence concerns the gene SLC2A10 and Andersen-Tawil syndrome.