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Standardized clinical trial on the application of Levodopa (LD) / Carbidopa (CD) to patients with Parkinson disease vs LD / CD and Entacapon (EN) vs LD / CD and Tolcapon (TO) concerning the parameters motor function, pharmacokinetics of LD, plasma level of homocystein and serum level of cortisol.

Standardized clinical trial on the application of Levodopa (LD) / Carbidopa (CD) to patients with Parkinson disease vs LD / CD and Entacapon (EN) vs LD / CD and Tolcapon (TO) concerning the parameters motor function, pharmacokinetics of LD, plasma level of homocystein and serum level of cortisol.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2009-017416-33-DE
Enrollment
Unknown
Registered
2009-12-21
Start date
2010-01-18
Completion date
Unknown
Last updated
2013-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Male and female patients with Parkinson´s disease meeting UKPDS criteria MedDRA version: 12.1 Level: LLT Classification code 10013113 Term: Disease Parkinson's

Interventions

Trade Name: Tasmar Product Name: Tolcapon Product Code: TO Pharmaceutical Form: Coated tablet INN or Proposed INN: TOLCAPONE CAS Number: 134308-13-7 Current Sponsor code: TO Concentration unit: mg mil

Sponsors

Clinical research lab for neurodegeneration, Dept. of Neurology, St. Josef-Hospital, Ruhr-University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: • signed informed consent according to GCP-V and local law; • male or female patients with Parkinson´s disease with at least 3 of the following symptoms: Resting tremor, Bradykinesia, Rigor and Asymmetria; • Age between 30 and 75 years; Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range ;Inclusion criteria: • signed informed consent according to GCP-V and local law; • male or female patients with Parkinson´s disease with at least 3 of the following symptoms: Resting tremor, Bradykinesia, Rigor and Asymmetria; • Age between 30 and 75 years; Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: • Allergic reaction to Entacapon or Tolcapon or their ingredients in the medical history; • Atypic parkinson Syndromes (drug induced, metabolic or by inflammation); • clinically significant changes in routine lab testing and/or other internal or psychiatric diseases not according to parkinson´s disease; • clinically signifikant changes in the general examination not according to parkinson´s disease; • Diseases with changes in absorption, distribution or metabolism; • deep brain stimulation in the medical history; • pregnancy, planned pregnancy or nursing period, unwillingness to perform adequate contraception. ;Exclusion criteria: • Allergic reaction to Entacapon or Tolcapon or their ingredients in the medical history; • Atypic parkinson Syndromes (drug induced, metabolic or by inflammation); • clinically significant changes in routine lab testing and/or other internal or psychiatric diseases not according to parkinson´s disease; • clinically signifikant changes in the general examination not according to parkinson´s disease; • Diseases with changes in absorption, distribution or metabolism; • deep brain stimulation in the medical history; • pregnancy, planned pregnancy or nursing period, unwillingness to perform adequate contraception.

Design outcomes

Primary

MeasureTime frame
Main Objective: Main objective of the trial is to test the individual response to levodopa and to determine the influence of Entacapon and Tolcpaon on the pharmacokinetics of Levodopa, on plasma level of homocystein and serum level of cortisol in a short applied period. All these parameters are compared to motor function, muscle strength and subkective ability. ;Secondary Objective: A secondary objective of the trial is to evaluate a possible diagnostic use of a short-time application of Levodopa/Carbidopa + COMT-Inhibitor as an "optimized Levodopa-Challenge". ;Primary end point(s): The primary endpoint of the trial is the standardized evaluation of differences in the plasma levels of levodopa, its metabolite 3-OMD, homocystein and the serum level of cortisol according to the application of levodopa/carbidopa, levodopa/carbidopa + entacapone and levodopa/carbidopa + tolcapone and possible correlation to motor function, strength and subjective ability. ;Main Objective: Main objective of the trial is to test the individual response to levodopa and to determine the influence of Entacapon and Tolcpaon on the pharmacokinetics of Levodopa, on plasma level of homocystein and serum level of cortisol in a short applied period. All these parameters are compared to motor function, muscle strength and subkective ability. ;Secondary Objective: A secondary objective of the trial is to evaluate a possible diagnostic use of a short-time application of Levodopa/Carbidopa + COMT-Inhibitor as an "optimized Levodopa-Challenge". ;Primary end point(s): The primary endpoint of the trial is the standardized evaluation of differences in the plasma levels of levodopa, its metabolite 3-OMD, homocystein and the serum level of cortisol according to the application of levodopa/carbidopa, levodopa/carbidopa + entacapone and levodopa/carbidopa + tolcapone and possible correlation to motor function, strength and subjective ability.

Countries

Germany

Contacts

Public Contact; ;

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Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026