For example, mutations in the gene coding for the intestinal transporter SLC39A4 cause the inherited disorder Acrodermatitis Enteropathica (AE), a condition caused by the inability to absorb Zn and resulting in systemic deficiency that is resolved with lifelong Zn supplementation (1 mg/kg/day body weight) [8]. The gene discussed is SLC39A4; the disease is acrodermatitis enteropathica.