Parkinson's Disease Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People who are able to understand what the study involves and are willing to sign a consent form agreeing to take part.
- People who are able to attend all scheduled visits and follow the study procedures and tests as required.
- People who are able to travel to the research site for study-related procedures.
- Women who are either unable to become pregnant (due to surgery or having gone through menopause, defined as 12 months without a period), or, if able to become pregnant, must not currently be pregnant (confirmed by a urine test) and must not be breastfeeding.
- All participants must use highly effective contraception during the study (such as hormonal contraceptives, an IUD, tubal occlusion, a vasectomised partner, or abstinence).
- Male participants who are sexually active must agree to use condoms during the study and for 3 months after the last imaging scan, and must ensure that a medically approved contraceptive method is also being used by their partner.
- People who have adequate vision and hearing to complete the psychological tests, as judged by the study doctor.
- People who are not taking any medications known to affect the serotonin system (such as antidepressants like SSRIs, tricyclics, or migraine treatments called triptans).
- People who take certain medications that may affect brain imaging scans and who are able, from a medical standpoint, to stop taking them for a required period before the scan (confirm with trial site).
Who may not be able to join:
- People who are not able to make decisions for themselves, as judged by the study doctor.
- People who have been diagnosed with dementia.
- People currently taking blood-thinning medications (such as warfarin or heparin) that could make a lumbar puncture (spinal fluid sample) unsafe.
- People who have a condition that makes a lumbar puncture unsafe, such as severe spine disease, bleeding disorders, or low platelet levels.
- People who have taken certain medications that interfere with brain imaging scans (such as antipsychotics, metoclopramide, or stimulant medications) within 5 months before the screening visit.
- People who have taken an experimental drug or used an experimental device within 60 days before the start of the study (note: dietary supplements such as coenzyme Q10 taken outside a clinical trial are not excluded).
- People with a history of cancer in the last 5 years, except for a certain type of non-spreading skin cancer (basal cell carcinoma).
- People with a current or recent history of drug or alcohol misuse or dependence.
- People who cannot have an MRI scan, such as those with metal implants or devices in their body (for example, a pacemaker, stents, or metal fragments in the eyes).
- People with claustrophobia (fear of enclosed spaces) or back pain that would make lying still in a PET or MRI scanner unbearable.
- People whose previous MRI scan showed signs of a significant neurological condition, in the opinion of the study doctor.
- People with any other medical or psychiatric condition, or abnormal lab results, that the study doctor believes would make participation unsafe or unsuitable.
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Marios Politits, Professor, The University of Exeter
Phone: 07503 741242
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
DASB (a marker of Serotonin transporter) used to quantify in vivo pathology of serotonin; SPECT to measure brain molecular pathology; Magnetic Resonance Imaging (MRI)
Can't join this trial?
Data last synced from ClinicalTrials.gov: 22 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.