NCIt definition : Human ENPP1 wild-type allele is located in the vicinity of 6q23.2 and is approximately
87 kb in length. This allele, which encodes ectonucleotide pyrophosphatase/phosphodiesterase
family member 1 protein, is involved in melanogenesis, bone mineralization and soft
tissue calcification. Mutation of the gene is associated with generalized arterial
calcification of infancy 1, ossification of the posterior longitudinal ligament of
the spine, autosomal recessive hypophosphatemic rickets 2 and Cole disease and may
be associated with increased susceptibility for obesity and non-insulin dependent
diabetes mellitus.;