Skip to content

Postitron emission tomography imaging of neuroinflammation in Parkinson´s disease

In vivo PET imaging of neuroinflammation in Parkinson’s disease using the purinergic P2X7 receptor ligand [11C]SMW139 (PRI-PD) - PRI-PD

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2018-000405-23-FI
Enrollment
14
Registered
2018-02-21
Start date
2018-03-27
Completion date
Unknown
Last updated
2018-04-30

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

Conditions

Parkinson´s disease MedDRA version: 20.0 Level: LLT Classification code 10034007 Term: Parkinson's disease NOS System Organ Class: 100000004852

Interventions

Product Name: (2-chloro-5-[11C]methoxy-N-(((3s,5s,7s)-3,5,7-trifluoroadamantan-1-yl)methyl) benzamide) Product Code: [11C]SMW139 Pharmaceutical Form: Injection

Sponsors

Juha Rinne / PET Centre
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: HEALTHY VOLUNTEERS 1. Subject is between 45 and 80 years (male/female). 2. Subject is judged to be in good health by the investigator on the basis of medical history, physical examination including vital signs. 3. Subject’s body mass index is >18 and = 60 years of age white matter hyperintensities corresponding to a WML (white matter lesion) score =65 years) yes F.1.3.1 Number of subjects for this age range 10

Exclusion criteria

Exclusion criteria: HEALTHY VOLUNTEERS 1. Subject has a history of any major disease that may interfere with the investigations (especially liver and kidney disease, or uncontrolled diabetes). 2. Subject has any history of a major neurological disorder. 3. Subject has elevated likelihood for hereditary Parkinson’s disease as assessed by family history. 4. Subject has a history or evidence of psychiatric disease, especially depression. A Beck Depression Inventory score should be 500 ml), donated blood or participated in another clinical trial using investigational drug(s) within 30 days prior to the imaging day. 6. Subject is currently a user (including ‘’recreational use’’) of any illicit drugs, including cannabis, or has a history of drug or alcohol abuse. 7. Subject chronically uses anti-inflammatory medication (steroids, non-steroidal anti-inflammatory drugs (NSAID), aspirine, paracetamol, etc.), or other medication known to interact with P2X7 receptors. 8. Uncontrolled hypertension juged by the investigator. . 9. Previous repetitive use of psychotropic medication. 10. Pregnancy or lactation (only for women). 11. Administration of any investigational product within 3 months before the start of the present study. 12. Known or suspected drug, alcohol or other abuse, or positive urine drug screen which may interfere with the study objective as judged by the investigator. 13. History of severe allergy/hypersensitivity or ongoing allergy/hypersensitivity as judged by the investigator. 14. Subject has a contra-indication for MRI scanning. 15. Subject suffers from claustrophobia or cannot tolerate confinement during PET or MR scanning procedures; subject cannot lie still for 90 minutes inside the PET system. 16. Subject does not understand the study procedure. 17. Subject is unwilling or unable to perform all of the study procedures, or is considered unsuitable in any way by the principal investigator. 18. Subject has a known allergy to xylocaine (which is be used as a local anesthetic for the placement of the arterial catheter). PARKINSON`S DISEASE PATIENTS 1. Subject has parkinsonism not caused by idiopathic Parkinson’s disease (e.g. drug-induced, metabolic disorders, encephalitis, vascular parkinsonism, atypical parkinsonian syndromes such as multiple system atrophy, progressive supranuclear palsy and corticobasal degeneration). 2. Subject has a history of another major neurological disorder or history of significant brain lesion (e.g. tumor, stroke). 3. Subject has significant structural brain lesions on T1 or T2 MRI, unrelated to IPD. 4. Subject has a history of any major disease that may interfere with radiotracer investigations (especially severe liver and kidney disease, or uncontrolled diabetes). 5. Subject is unable to lie sufficiently still in the PET system, or has tremor with significant head movements. 6. Subject consumes excessive alcohol (average > 4 units/day) or has recreational/illicit drug use (including cannabis). 7. Subject chronically uses anti-inflammatory medication including systemic steroids. 8. Subject has known allergy to lidocaine (which may be used as a local anesthetic for the placement of the arterial catheter). 9. Uncontrolled hypertension judged by the investigator. . 10. Previous repetitive use of psychotropic medication. 11. Pregnancy or lactation (only for women). 12. Administration of any investigational product within

Design outcomes

Primary

MeasureTime frame
Main Objective: Primary objective: To determine regional binding differences of [11C]SMW139 in 7 PD patients and 7 healthy volunteers. ;Secondary Objective: Secondary objectives: Brain kinetics and determination of brain P2X7R availability (VT and BPND) using [11C]SMW139 PET in 7 PD patients and 7 healthy age-matched healthy controls. Correlation between nigro-striatal P2X7R availability measured with using [11C]SMW139 PET and DAT availability measured using [18F]FE-PE2I PET in 7 PD patients and 7 healthy age-matched healthy controls.;Primary end point(s): Completion of PET imaging of patients with Parkinson´s disease and healthy controls with [11C]SMW139;Timepoint(s) of evaluation of this end point: The end point will be evaluated after all study procedures in all Parkinson´s disease patients and healthy controls have been completed.

Secondary

MeasureTime frame
Secondary end point(s): Completion of study procedures other than PET imaging of patients with Parkinson´s disease and healthy controls with [11C]SMW139;Timepoint(s) of evaluation of this end point: The end point will be evaluated after all study procedures in all Parkinson´s disease patients and healthy controls have been completed.

Countries

Finland

Outcome results

None listed

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