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NCT05095870: CANVAS

Evaluation of the Peripheral Nerve Ultrasound as a Diagnostic Tool in CANVAS Neuropathies

Completed Last updated 4 December 2025
What this trial tests

trial testing No intervention in Neuropathy in 35 participants. Completed in 31 March 2022.

Timeline
25 October 2021
Primary endpoint
31 March 2022
31 March 2022

Quick facts

Lead sponsorCentre Hospitalier Universitaire de Nīmes
StatusCompleted
Study typeOBSERVATIONAL
Enrollment35
Start date25 October 2021
Primary completion31 March 2022
Estimated completion31 March 2022
Sites1 location across France

Drugs / interventions tested

Conditions studied

Sponsor

Centre Hospitalier Universitaire de Nīmes

Who can join

18 and older, any sex, with Neuropathy or Cerebellar Ataxia. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Cerebellar ataxia with neuropathy and bilateral areflexia syndrome (CANVAS) is a late onset neurodegenerative disorder with a slowly progressive ataxia. It's genetic causative etiology with an autosomal recessive inheritance has a recent discovery. It is clinically characterized by impaired visually enhanced vestibulo-ocular reflex, although patients commonly present with imbalance as a main concern, associated with sensory complaints. It has been demonstrated that sensory impairment in CANVAS patients is due to degeneration of dorsal root with abnormal sensory nerve conduction. Previously defined diagnostic criteria included cerebellar atrophy on brain MRI, neuronopathy on electrophysiological studies and negative genetic testing for other inherited ataxia syndromes like Friedriech ataxia and spinal cerebellar ataxia (SCA). Peripheral nerve ultrasound is a noninvasive technique, able to identify abnormal peripheral nerves with underlying injuries and specific sonographic characteristics. Pelosi et al established that patients with CANVAS have a smaller nerve cross sectional area (CSA) compared to healthy individuals and/ or axonal neuropathies. The main objective of this study was to obtaine a detailed description of peripheral nerves in consecutive patients with CANVAS syndrome followed in theneurology department of the Universitary Hospital of Nimes (France), using conventional electrophysiology and peripheral nerve ultrasound.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other trials of No intervention

Trials testing the same drug.

Other recruiting trials for Neuropathy

Currently open trials in the same condition.

Other Centre Hospitalier Universitaire de Nīmes trials

Trials by the same sponsor.

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Data sources for this page

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