In addition to manifestations listed above, NS patients may experience short stature, autism spectrum disorder (ASD), attention-deficit/hyperactivity disorder (ADHD)10–13, gastrointestinal problems14, etc. The genetic etiology of NS is heterogeneous and most commonly results from mutations in PTPN11, SOS1, KRAS, and RIT1 genes9. The gene discussed is SOS1; the disease is attention deficit-hyperactivity disorder.