Overview Dose Response Effects of Quillivant XR in Children With ADHD and Autism: A Pilot Study Status: Completed Trial end date: 2016-10-01 Target enrollment: Participant gender: Summary The purpose of this study is to determine whether Quillivant XR is effective in the treatment of ADHD in children with Autism Spectrum Disorder (ASD). Phase: Phase 4 Details Lead Sponsor: Seattle Children's HospitalCollaborator: PfizerTreatments: Methylphenidate