Severe, early onset hypertrophic cardiomyopathy in a family with LEOPARD syndrome.

Objective: Leopard syndrome is an acronym (multiple Lentigines, electrocardiographic conduction abnormalities, ocular hypertelorism, pulmonic stenosis, abnormal genitalia, retardation of growth, and sensorineural deafness) describing an autosomal dominant disease due to mutations in the raS-MapK pathway.

Methods: Here, we describe a family (mother and daughter) with clinical and molecular diagnosis of Leopard syndrome 1 and HCM, and we report the prenatal diagnosis of HCM in a fetus at risk for Leopard syndrome.

Results: An echocardiography was conducted showing a significant hypertrophy of both ventricles (left and right ventricular wall thickness 9mm and 3 mm). After a multidisciplinary counseling the couple opted for the termination of pregnancy

Conclusion: Further genotype-phenotype studies are warranted to fully elucidate the impact of the genotype on the natural history of patients with LS and LVH.