NCIt definition : Human CTNS wild-type allele is located in the vicinity of 17p13.2 and is approximately
27 kb in length. This allele, which encodes cystinosin protein, plays a role in cystine/proton
symport. Mutation of the gene is associated with multiple forms nephropathic cystinosis
including the atypical, the ocular and the late-onset juvenile or adolescent forms.;