Patients with a history of toxic epidermal necrolysis (TEN) or Stevens-Johnson syndrome are excluded
Patients with Down syndrome
Active or a history of Tourette�s syndrome or tic disorder
No history of Steven�s Johnson�s syndrome, toxic epidermal necrolysis (TEN)s syndrome, or motor neuropathy
Patients with Down syndrome are not eligible
Diagnosis of Down syndrome (Trisomy 21)
Patients must not have known Gilbert�s syndrome
No known Gilbert�s syndrome or known homozygosity for UGAT1A1*28 polymorphism
Patients with Down syndrome
Down syndrome
Patients with down syndrome are excluded from this study