Acquired TSEs (caused by the accidental exposure of patients to prions), include iatrogenic CJD caused, for example, by the administration of infected post-mortem human growth hormone, the variant CJD (vCJD) derived from the consumption of meat from BSE-infected cows, and few cases of vCJD transmission by blood transfusion from affected individuals [21]. The gene discussed is GH1; the disease is variant Creutzfeldt-Jakob disease.