PMID- 31607204 OWN - NLM STAT- MEDLINE DCOM- 20210311 LR - 20210311 IS - 1814-1412 (Electronic) IS - 1562-2975 (Linking) VI - 21 IP - 4 DP - 2020 Apr TI - A prospective open-label trial of long-acting liquid methylphenidate for the treatment of attention deficit/hyperactivity disorder in intellectually capable adults with autism spectrum disorder. PG - 274-290 LID - 10.1080/15622975.2019.1679392 [doi] AB - Objectives: This treatment trial is aimed at assessing the short-term tolerability and efficacy of liquid-formulation extended-release methylphenidate (MPH-ER) for the treatment of attention deficit/hyperactivity disorder (ADHD) in adults with high-functioning autism spectrum disorder (HF-ASD).Methods: A 6-week open-label trial (ClinicalTrials.gov: NCT02096952) was conducted in 15 HF-ASD adults (mean age 24.9 +/- 4.6; male, 12 (80%)) suffering from moderate-severe ADHD. MPH-ER was administered based on a flexible titration schedule. Efficacy was assessed on clinician- and self-rated measures. Tolerability was assessed by documenting treatment-emergent adverse events (AEs) and other safety measures.Results: Short-term MPH-ER treatment was associated with significant improvement in ADHD severity (Adult ADHD Investigator Symptom Report Scale (AISRS) mean change (MC), -22.8 +/- 8.8, P < 0.001; Adult ADHD Self-Report Scale (ASRS) MC, -8.2 +/- 15.3, P < 0.001). Twelve (80%) participants were deemed responders, based on >/=30% reduction in AISRS score and an ADHD Clinical Global Impression-Improvement score