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CompletedNCT06809062CAA-WMH-ApoEUpdated Jun 18, 2026

ApoE Genotyping Analysis in Patients With Suspected Non-haemorrhagic Amyloid Angiopathy

An observational study in Amyloid Angiopathy, sponsored by Centre Hospitalier Universitaire de Nīmes. Completed at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-18.

Sponsored by Centre Hospitalier Universitaire de Nīmes · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
100
Ages
18 Years and older
Sex
All
01

Study summary

Ischaemic microangiopathic features have recently been incorporated into the criteria for cerebral amyloid angiopathy (CAA).

ApoE genotyping (presence of the E4 allele) is routinely used to help determine the aetiology of a haemorrhagic microangiopathy found on MRI.

Chronic ischaemic disease in CAA is characterised by the presence of :

  • multispot pattern on the FLAIR sequence
  • severe periventricular FLAIR hypersignals with posterior predominance

The main aim of this study was therefore to analyse the frequency of the presence of one (or two) E4 allele(s) on ApoE genotyping in patients with suspected CAA based on ischaemic MRI involvement with a typical radiological pattern.

02

Conditions studied

  • Amyloid Angiopathy

Keywords

  • Cerebral Amyloid Angiopathy
03

In context

Cerebral Amyloid Angiopathy

38 studies on the registry are indexed under Cerebral Amyloid Angiopathy; 9 are open to participants now.

This study's enrollment of 100 is above the median of 81 across 20 observational studies indexed under Cerebral Amyloid Angiopathy.

Browse Cerebral Amyloid Angiopathy studies →

Lead sponsor

Centre Hospitalier Universitaire de Nīmes is the lead sponsor of 587 studies on the registry; 96 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Patients with ischaemic stroke (from causes other than CAA, as CAA is not a frequent cause of ischaemic stroke) with associated stigmata of microangiopathy on MRI that may suggest associated CAA.

Inclusion criteria

  • Patients with ischaemic stroke (from causes other than CAA, as CAA is not a frequent cause of ischaemic stroke) with associated stigmata of microangiopathy on MRI that may suggest associated CAA.
  • Patients treated at Nîmes University Hospital

Exclusion criteria

Exclusion Criteria:

  • Patient refusing to participate
05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
100 participants (actual)
Patient registry
No

Groups and cohorts

  • ischaemic microangiopathy

    The study is aimed at patients with manifestations related to a vascular accident visible on MRI.

06

What researchers measure

Primary outcomes

  1. ApoE genotypage

    To analyse the frequency of the presence of one (or two) E4 allele(s) on ApoE genotyping in patients with suspected AAC. Endpoint: presence of the E4 allele (Yes/No).

    Time frame: baseline

07

Study locations

1 site
  • CHU de Nîmes
    Nîmes, Gard 30029, France
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 18, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06809062
Lead sponsor
Centre Hospitalier Universitaire de Nīmes
Responsible party
Sponsor
First posted
Feb 5, 2025
Start date
Feb 1, 2025
Primary completion
Dec 31, 2025
Completion
Dec 31, 2025
Last update
Jun 18, 2026

Study contacts

Anissa MEGZARI
study director · Centre Hospitalier Universitaire de Nīmes

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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