# Mod of Cognitive Flexibility by tDCS, Tyrosine Polymorphisms in the COMT Gene

> **NCT03845920** · NA · UNKNOWN · sponsor: **Sheffield Hallam University** · enrollment: 32 (estimated)

## Conditions studied

- Modulation of Cognitive Flexibility by Transcranial Direct Current Stimulation, Tyrosine Administration and Polymorphisms in the COMT Gene

## Interventions

- **COMBINATION_PRODUCT:** tdcs (sham/anodal) + drug (placebo/tyrosine)

## Key facts

- **NCT ID:** NCT03845920
- **Lead sponsor:** Sheffield Hallam University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-02-18
- **Primary completion:** 2019-09-30
- **Final completion:** 2019-09-30
- **Target enrollment:** 32 (ESTIMATED)
- **Last updated:** 2019-04-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03845920

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03845920, "Mod of Cognitive Flexibility by tDCS, Tyrosine Polymorphisms in the COMT Gene". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT03845920. Licensed CC0.

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