Exploring genetic links between sleep issues and Parkinson's Disease

Study on the Effects of Single Nucleotide Polymorphisms in Aquaporin-4 (AQP4) Gene on the Clinical Phenotype in Patients with Idiopathic and Familial Parkinson's Disease.

Observational University of Exeter · NCT04553185

This study is trying to see if certain genetic changes related to sleep problems can help explain how Parkinson's Disease develops and progresses in people.

Quick facts

Study typeObservational
Enrollment800 (estimated)
Ages18 Years to 85 Years
SexAll
SponsorUniversity of Exeter Academic / other
Locations4 sites (Ashford and 3 other locations)
Trial IDNCT04553185 on ClinicalTrials.gov

What this trial studies

This observational study investigates the relationship between sleep problems, genetic variations in the Aquaporin-4 gene (AQP4), and the development of Parkinson's Disease (PD). It aims to understand how these genetic variations may influence the clinical presentation and progression of both sporadic and familial forms of PD. By analyzing the genetic profiles of participants diagnosed with PD, the study seeks to uncover potential mechanisms linking AQP4 to the disease's pathology, particularly in relation to the glymphatic system's role in waste clearance during sleep.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals aged 18-85 with a diagnosis of Parkinson's Disease and no history of other neurological or psychiatric disorders.

Not a fit: Patients with other neurological disorders or those unable to perform online assessments may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into genetic factors influencing Parkinson's Disease, potentially leading to improved diagnosis and treatment strategies.

How similar studies have performed: While studies have shown genetic variations in AQP4 to be linked to Alzheimer's Disease, this approach in Parkinson's Disease is novel and has not been previously tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 18-85 years of age
* Able to give informed consent
* Able to perform online neuropsychological examinations
* Diagnosis of PD according to Brain Bank Criteria
* No presence or personal or family history of other neurological or psychiatric disorders

Exclusion Criteria:

* Presence of other neurological disorders and known intracranial co-morbidities such as stroke, haemorrhage, space-occupying lesions
* Inability to perform online neuropsychological assessment
* Inability to have access to informatics technology to perform the online assessment tests
* Inability to travel for the assessments
* Native language different from English

Where this trial is running

Ashford and 3 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Parkinson DiseaseParkinson's diseaseAQP4Glymphatic SystemGenetics
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.