Wilson Disease (Credo)Wilson disease (WD), or hepatolenticular degeneration, is a rare autosomal recessive metabolic disease linked to Chromosome 13 (Schilsky & Sternlieb,). It is caused by two mutant alleles of a putative copper transporter, STP7B. As a result of increased copper accumulation in the liver, brain, and corneal tissue, individuals with Wilson disease often suffer from cirrhosis of the liver, bilateral softening and degeneration of the basal ganglia, and brown pigmented rings in the periphery of the cornea, referred to as Kayser-Fleischer rings (International Hepatology Informatics Group,; Sherlock & Dooley,).