Crick
HomeTrialsGenesDrugs23andMeGraphBlogContact
  • Home
  • Trials
  • Genes
  • Drugs
  • 23andMe
  • Graph
  • Blog
  • Contact
Crick

An open-source clinical intelligence platform. Explore clinical trials, gene networks, and molecular structures using public data sources.

Data Sources

  • ClinicalTrials.gov
  • OpenTargets
  • ClinVar
  • PubChem

Links

  • Contact
  • Privacy

© 2026 Crick. All rights reserved.

Crick is for educational purposes only. Not medical advice.

Results for “Response to Levodopa”

18 trials

Filters

Phase
Early Phase 1
Phase 1
Phase 2
Phase 3
Phase 4
Status
Recruiting
Active, Not Recruiting
Not Yet Recruiting
Completed
Enrolling by Invitation

Showing 18 of 18 results

Testing effectiveness (Phase 2)Ended earlyNCT01663935
What this trial is testing

Vision Response to Dopamine Replacement

Who this might be right for
AlbinismOculocutaneous Albinism
University of Wisconsin, Madison 20
Early research (Phase 1)Study completedNCT03065192
What this trial is testing

Safety and Efficacy Study of VY-AADC01 for Advanced Parkinson's Disease

Who this might be right for
Idiopathic Parkinson's DiseaseParkinson's DiseaseBasal Ganglia Disease+6 more
Neurocrine Biosciences 16
Testing effectiveness (Phase 2)Study completedNCT02834507
What this trial is testing

Effect of Two Multiple-dose Regimens of BIA 3-202 on the Pharmacokinetics and Motor Response of Levodopa, and on the Erythrocyte Comt Activity in Parkinson's Disease Patients

Who this might be right for
Parkinson's Disease (PD)
Bial - Portela C S.A. 19
Large-scale testing (Phase 3)Study completedNCT00199407
What this trial is testing

Istradefylline (KW-6002) for the Treatment of Parkinson's Disease in Patients Taking Levodopa

Who this might be right for
Parkinson's Disease
Kyowa Kirin, Inc. 230
Testing effectiveness (Phase 2)Looking for participantsNCT06626152
What this trial is testing

Measuring Psychomotor Response to L-DOPA Challenge As a Biomarker for Outcomes in Late-Life Depression: a Pilot Feasibility Trial

Who this might be right for
Major Depressive Disorder
University of British Columbia 50
Not applicableStudy completedNCT02112812
What this trial is testing

Effects of Helicobacter Pylori Infection Eradication in Patients With Parkinson's Disease

Who this might be right for
Response to LevodopaMotor OutcomesQuality of Life Outcomes
National University of Malaysia 82
Early research (Phase 1)Study completedNCT01973543
What this trial is testing

Safety Study of AADC Gene Therapy (VY-AADC01) for Parkinson's Disease

Who this might be right for
Parkinson's Disease
Neurocrine Biosciences 15
Testing effectiveness (Phase 2)Study completedNCT00605553
What this trial is testing

Study to Evaluate SYN115 in Parkinson's Disease

Who this might be right for
Parkinson's Disease
Biotie Therapies Inc. 30
Testing effectiveness (Phase 2)Study completedNCT01296464
What this trial is testing

Comparing Different Levodopa/Carbidopa/Entacapone Treatment Regimens

Who this might be right for
Parkinson's Disease
Orion Corporation, Orion Pharma 27
Large-scale testing (Phase 3)Study completedNCT02352363
What this trial is testing

Randomized Safety Study of CVT-301 Compared to an Observational Control Group

Who this might be right for
Idiopathic Parkinson's Disease
Acorda Therapeutics 408
Large-scale testing (Phase 3)Study completedNCT00199394
What this trial is testing

Istradefylline (KW-6002) for the Treatment of Parkinson's Disease

Who this might be right for
Parkinson's Disease
Kyowa Kirin Co., Ltd. 405
Large-scale testing (Phase 3)Study completedNCT00199420
What this trial is testing

Istradefylline (KW-6002) in Treating Patients With Parkinson's Disease on Levodopa

Who this might be right for
Parkinson's Disease
Kyowa Kirin, Inc. 580
Testing effectiveness (Phase 2)Study completedNCT00089622
What this trial is testing

Lisuride Patch to Treat Parkinson's Disease

Who this might be right for
Parkinson Disease
National Institute of Neurological Disorders and Stroke (NINDS) 40
Testing effectiveness (Phase 2)WithdrawnNCT00451633
What this trial is testing

The Effect Of E2007 On Pharmacodynamic Responses To Levodopa Among Patients With Parkinson's Disease Who Experience Dyskinesia And Motor Fluctuations

Who this might be right for
Parkinson's Disease
Eisai Inc.
Post-approval studies (Phase 4)Study completedNCT01494532
What this trial is testing

A Fixed Dose Study of Ropinirole Prolonged Release as Adjunctive Treatment in Patients With Advanced Parkinson's Disease

Who this might be right for
Parkinson Disease
GlaxoSmithKline 352
Testing effectiveness (Phase 2)Study completedNCT01568034
What this trial is testing

Investigate the Tolerability and Effect of Three Single-dose Regimens of BIA 9-1067

Who this might be right for
Parkinson's Disease
Bial - Portela C S.A. 10
Post-approval studies (Phase 4)Ended earlyNCT03761030
What this trial is testing

L-DOPA vs. Placebo for Depression and Psychomotor Slowing in Older Adults

Who this might be right for
Major Depressive DisorderDysthymiaDepression
New York State Psychiatric Institute 51
Not applicableStudy completedNCT00692328
What this trial is testing

Expectation and Response to Levodopa and Acupuncture in Parkinson's Disease

Who this might be right for
Parkinson's Disease
Oregon Health and Science University 63