Endocrine Abstracts

Leopard syndrome (LS) is a rare autosomal dominant disease of variable penetrance and clinical expression. LEOPARD is an acronym for the major features of the disorder: lentigines, ECG conduction abnormalities, Ocular hypertelorism, pulmonary stenosis, abnormal genitalia, retardation of growth, and deafness. LS is caused by different mutations in PTPN11 gene (protein-tyrosine phosphatase, nonreceptor-type, 11), allelic with Noonan syndrome (NS). The diagnosis is established if...