# Biomarker Validation in Motor System Physiology in Attention Deficit Hyperactivity Disorder

> **NCT04421248** · PHASE4 · RECRUITING · sponsor: **Donald Gilbert, MD, MS, FAAN, FAAP** · enrollment: 214 (estimated)

## Conditions studied

- Attention Deficit Hyperactivity Disorder Combined

## Interventions

- **DRUG:** Methylphenidate
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT04421248
- **Lead sponsor:** Donald Gilbert, MD, MS, FAAN, FAAP
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2020-09-01
- **Primary completion:** 2026-02-09
- **Final completion:** 2026-07-01
- **Target enrollment:** 214 (ESTIMATED)
- **Last updated:** 2026-05-15

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04421248

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04421248, "Biomarker Validation in Motor System Physiology in Attention Deficit Hyperactivity Disorder". Retrieved via AI Analytics 2026-06-06 from https://api.ai-analytics.org/clinical/NCT04421248. Licensed CC0.

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