The lifespan of people with<unk> 's syndrome can be similar to the general population, however,<unk>  can be associated with several health conditions that can contribute to mortality. The greatest contributor to mortality in individuals with<unk>  is complications of cardiovascular disease. Prognosis is therefore largely dependent on the presence or absence of cardiac disease, as well as the type and severity of the disease (if disease is present). Most notably,<unk>  with hypertrophic cardiomyopathy is associated with increased mortality.
Noonan syndrome
Growth hormone deficiency
Avellis syndrome
Williams syndrome
Muenke syndrome
Christianson syndrome
GRACILE syndrome
Sugarman syndrome