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CompletedNCT01527695Updated Jan 31, 2013

PET Study in Parkinson's Disease Patients

A Phase 2 interventional study of ER tablet 25 mg AZD3241 and ER tablet 100 mg AZD3241 in Parkinson's Disease, sponsored by AstraZeneca. Completed at 3 sites in Sweden. Open to participants aged 45 Years to 75 Years. Per ClinicalTrials.gov, last updated 2013-01-31.

Sponsored by AstraZeneca · Phase 2, Interventional, and Basic science

Phase
Phase 2
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
45 Years to 75 Years
Sex
All
01

Study summary

This is a multi-centre study to be conducted in Sweden and Finland. Up to 24 male and/or female patients of non-childbearing potential aged 45 to 75 years (inclusive), with a clinical diagnosis Parkinson's Disease will be randomised in the study to allow for 20 patients to complete this study.The study will evaluate the effect of 8 weeks treatment with AZD3241 on microglia activation as measured via PET examinations.

Read the detailed description

A Phase IIA, Multi centre, Double-blind, Randomised, Placebo-controlled, Parallel-group Study to Assess the Effect of 8 Weeks Treatment with Oral AZD3241 on Microglia Activation, as Measured by Positron Emission Tomography (PET), in Patients with Parkinson's Disease

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Conditions studied

  • Parkinson's Disease

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Keywords

  • Phase IIa
  • AZD3241
  • microglia activation
  • safety
  • Pharmacodynamics and pharmacokinetics analyses
  • Parkinson patients
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In context

Parkinson Disease

4,487 studies on the registry are indexed under Parkinson Disease; 1,082 are open to participants now.

This study's enrollment of 24 is below the median of 40 across 3,294 interventional studies indexed under Parkinson Disease.

Browse Parkinson Disease studies →

Lead sponsor

AstraZeneca is the lead sponsor of 3,429 studies on the registry; 270 are open to participants now.

Of its 357 completed or terminated interventional studies of FDA-regulated products, 173 (48%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
45 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Female and male patients aged 45 to 75 years (inclusive) at the day of enrolment (Visit 1)
  • Female patients must have a negative pregnancy test at Screening, must not be lactating and must be of non childbearing potential, confirmed at Screening
  • Male patients should be willing to use barrier contraception, eg, condoms, even if their partners are post-menopausal, be surgically sterile or are using accepted contraceptive methods, from the administration of the first dose of the investigational
  • The clinical diagnosis of patients must meet the criteria for "diagnosis of idiopathic Parkinson's disease" according to the modified UKPDS Brain Bank criteria (see Appendix E)
  • Modified Hoehn and Yahr stage 1 to 2

Exclusion criteria

Exclusion Criteria:

  • Diagnosis is unclear or a suspicion of other Parkinsonian syndromes exists, such as secondary Parkinsonism (caused by drugs, toxins, infectious agents, vascular disease, trauma, brain neoplasm), Parkinson-plus syndromes or heredodegenerative diseases
  • Patients who have undergone surgery for the treatment of Parkinson's disease (eg, pallidotomy, deep brain stimulation, foetal tissue transplantation) or have undergone any other brain surgery
  • Presence of significant dyskinesias, motor fluctuations, swallowing difficulties or loss of postural reflexes Patients with a history of non-response (according to both the clinician and the patient) to an adequate course of L-dopa or a DA agonist
  • Use of pergolide, selegiline, metoclopramide, strong CYP3A4 inhibitors, CYP3A4 inducers (including St John's Wort) and strong CYP1A2 inhibitors and inducers, within 1 month of randomisation;
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Study design

Phase
Phase 2
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
24 participants (actual)

Study arms

  • Experimental
    AZD3241

    AZD3241 tablets 25 mg or 100 mg, titration first 5 days (50 mg bd on Day 1, 100 mg bd on Day 2, 200 mg bd on Day 3, 300 mg bd on Day 4, 400 mg bd on Day 5) Maintenance treatment from Day 6, 600 mg bd until Day 56±3 days

    Drug: ER tablet 25 mg AZD3241 · Drug: ER tablet 100 mg AZD3241

  • Experimental
    Placebo

    AZD3241 placebo bid for 8 weeks

    Drug: Placebo for AZD3241 25 mg · Drug: Placebo for AZD3241 100 mg

Interventions

  • DrugER tablet 25 mg AZD3241

    2 tablets twice daily for Day 1

  • DrugER tablet 100 mg AZD3241

    1-6 tablets twice daily from Day 2 until Day 56±3 days

  • DrugPlacebo for AZD3241 25 mg

    2 tablets twice daily for Day 1

  • DrugPlacebo for AZD3241 100 mg

    1-6 tablets twice daily from Day 2 until Day 56±3 days

06

What researchers measure

Primary outcomes

  1. Change of binding [11C]PBR28 to translocator protein (TSPO) measured by Positron Emission Tomography (PET).

    Time frame: baseline, 2-4 weeks

  2. Change of binding of [11C]PBR28 to TSPO measured by PET.

    Time frame: baseline, 7-8 weeks

Secondary outcomes

  1. Adverse events, vital signs, electrocardiogram (ECG), physical examination, clinical chemistry tests, height and weight measures for safety and tolerability profile.

    Time frame: Up to 10 weeks

  2. Change in plasma activity of myeloperoxidase (MPO).

    Time frame: baseline, up to 10 weeks

  3. Plasma concentrations of AZD3241.

    Time frame: Up to 8 weeks

  4. Part of safety profile in terms of Columbia Suicide Severity Rating Scale.

    Time frame: Up to 10 weeks

07

Study locations

3 sites
  • Reserach Site
    Stockholm, Sweden
  • Research Site
    Uppsala, Sweden
  • Research Site
    Vallingby, Sweden
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 31, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01527695
Lead sponsor
AstraZeneca
Responsible party
Sponsor
First posted
Feb 7, 2012
Start date
Apr 2012
Primary completion
Dec 2012
Completion
Jan 2013
Last update
Jan 31, 2013

Study contacts

Per Svenningsson, MD, PHD
principal investigator · Karolinska University Hospital
Bjorn Paulsson, MD
study director · AstraZeneca Medical Science Director
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2013. You cannot join it, but the record below documents what was studied.

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