Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 6 to 40

Brain imaging to study the effects of methylphenidate in adults with ADHD

Official title: Multimodal Brain Imaging of the Neural Effects of Methylphenidate in Patients With ADHD

Run by Johns Hopkins University · NCT04781972 · Data updated 2026-11-12

This study is testing how brain scans can help us understand how adults with ADHD respond to the medication methylphenidate compared to a placebo.

Quick facts

PhasePhase 4
Study typeInterventional
Ages6 Years to 40 Years
SexAll
Enrollment30 (estimated)
SponsorJohns Hopkins University
Academic / other
Locations1 site (Baltimore, Maryland)
StatusRecruiting
StartedJuly 27, 2021
Main results expectedNovember 30, 2028
Study endsApril 30, 2029
Registry record updatedOctober 27, 2026
Trial IDNCT04781972 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are right-handed adults diagnosed with ADHD - Combined Type.

Probably not a fit

Patients who are pregnant, have neurological disorders, or contraindications to MRI will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to identify neuroimaging biomarkers that can predict how patients with ADHD respond to methylphenidate treatment. It employs a double-blind crossover design where participants will receive both methylphenidate and a placebo, with their brain activity measured using functional MRI and brain chemistry assessed through magnetic resonance spectroscopy. The goal is to understand the neural changes associated with ADHD symptoms and treatment response, which could inform future pharmacological developments for the disorder.

Why it matters

Potential benefit: If successful, this study could lead to more personalized and effective treatments for patients with ADHD.

How similar studies have gone: Other studies have explored neuroimaging in ADHD treatment but this specific approach using multimodal imaging with methylphenidate is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* right handed

Exclusion Criteria:

* pregnant or breast feeding
* past or current neurological disorder
* non-ADHD cause of cognitive impairment
* uncontrolled medical disorder
* head trauma with loss of consciousness in the last year or any evidence of functional impairment due to and persisting after head trauma
* having an adverse reaction to methylphenidate, or other stimulant medication
* having a contraindication to MRI
* current smoking

Where it's running

  • Johns Hopkins School of Medicine
    Baltimore, Maryland, United States
    Recruiting

Study contacts

  • Principal investigator: Kristin L Bigos, PhD — Johns Hopkins School of Medicine
  • Study coordinator: Kristin L Bigos, PhD
  • Email: kbigos1@jhu.edu
  • Phone: 410-614-0453

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.