December, 21 1998

We are seeking multiplex families or affected sibpairs with Left Ventricular Outflow Tract Obstruction (LVOTO)Defects.
These are common congenital heart defects that include coarctation of the aorta (CoA), aortic valve stenosis (AS),
hypoplastic left heart syndrome (HLHS), bicuspid aortic valve (BAV), interrupted aortic arch type A (IAAA), and
mitral valve stenosis (MS). This protocol is IRB approved.