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Study details
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Carboxylesterase 1 Genetic Variation and Methylphenidate in ADHD

Icahn School of Medicine at Mount Sinai
NCT IDNCT03781752ClinicalTrials.gov data as of Apr 2026
Phase

Phase 4

Target enrollment

500

Study length

about 7.5 years

Ages

6–17

Locations

4 sites in FL, NY, OH +1

About this study

This trial is testing how genetic variations in carboxylesterase 1 (CES1) affect the way methylphenidate (MPH), a medication, works in children with ADHD. The goal is to find out if certain CES1 genes are linked to how MPH affects people with ADHD.

Based on ClinicalTrials.gov records.

What participants do

  • 1.Take Methylphenidate
PhasePhase 4
DrugMethylphenidate
Routeoral
Primary goalMaximum methylphenidate plasma concentration (Cmax),

Participation effort

Estimated from trial records. Details can vary by site.

Time + visits
Low5%
Logistics
Moderate50%

Logistics difficulty varies by site location and availability.

Trial highlights

Treatment details

Auto-extracted from trial records to preview treatments and outcomes.

Drug classes

methylphenidate (CNS stimulant; blocks reuptake of dopamine and norepinephrine)

Drug routes

oral (Disintegrating Oral Tablet)

Endpoints

Primary: Maximum methylphenidate plasma concentration (Cmax),

Secondary: Time to maximum concentration (Tmax)

Body systems

Psychiatry / Mental Health