Exploring GCase Activity in Dementia with Lewy Bodies

Exploration of Glucocerebrosidase Activity to Identify a Subpopulation Eligible for a Therapeutic Trial in Dementia With Lewy Bodies

Observational Assistance Publique - Hôpitaux de Paris · NCT05304195

This study is testing if people with dementia with Lewy bodies have lower levels of a specific enzyme compared to healthy individuals, to see if this could help guide new treatments.

Quick facts

Study typeObservational
Enrollment236 (estimated)
Ages50 Years and up
SexAll
SponsorAssistance Publique - Hôpitaux de Paris Academic / other
Locations1 site (Paris, France)
Trial IDNCT05304195 on ClinicalTrials.gov

What this trial studies

This research investigates the activity of the enzyme glucocerebrosidase in patients with dementia with Lewy bodies (DLB) to determine if decreased activity is present. The study involves comparing glucocerebrosidase activity between DLB patients and healthy controls, while also examining genetic variants of the GBA gene. Clinical characteristics such as motor and cognitive scales will be correlated with enzyme activity. The findings may provide insights into potential therapeutic approaches using existing treatments for Gaucher disease.

Who should consider this trial

Good fit: Ideal candidates include individuals aged 50 and older diagnosed with dementia with Lewy bodies.

Not a fit: Patients with other neurodegenerative diseases or Gaucher disease may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to new therapeutic options for patients with dementia with Lewy bodies.

How similar studies have performed: While this approach is novel in the context of dementia with Lewy bodies, similar studies have shown success in understanding glucocerebrosidase activity in related conditions.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria for patients :

* Male or female aged ≥ 50 years old
* Presence of an accompanying person
* Dementia with lewy bodies according to the revised criteria of Mc Keith 2017

Inclusion Criteria for controls:

* Male or female aged ≥ 50 years old
* Absence of cognitive impairment and clinical element for a neurodegenerative disease

Exclusion Criteria for patients:

* Other neurodegenerative disease
* Gaucher disease

Exclusion Criteria for controls:

* Neurodegenerative disease
* Cognitive impairment of all causes

Where this trial is running

Paris, France

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 Dementia With Lewy BodiesGlucocerebrosidaseGBA gene
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.