An observational study in Chronic Inflammatory Demyelinating Polyradiculoneuropathy, sponsored by Centre Hospitalier Universitaire de Nīmes. Withdrawn at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-04-05.
Sponsored by Centre Hospitalier Universitaire de Nīmes · Observational
Chronic inflammatory demyelinating polyradiculoneuritis (CIDP) is an autoimmune disorder of the peripheral nervous system, most commonly affecting the myelin sheath. The pathophysiology of CIDP is not completely understood, but both humoral and cellular immunity appear to be involved in the genesis of this disease. Some diseases are particularly associated with CIDP such as diabetes, monoclonal gammopathies and hematological diseases.
CIDP can occur before, after or simultaneously with the onset of systemic diseases. The systemic diseases most often seen in association with polyneuropathies are lupus, Gougerot-Sjögren's syndrome and sarcoidosis.
Ultrasound of peripheral nerves is a useful and accessible tool. In CIDP, this examination can reveal diffuse or segmental nerve hypertrophy. In addition to the size of the nerve, this exploration analyzes the echogenicity and the aspect of the different fascicles within the nerve. S. Goedee et al have shown that nerve ultrasound has very good diagnostic parameters and low interobserver variability in the diagnosis of CIDP. F. Härtig et al suggests that nerve ultrasound can predict the therapeutic response and describes 3 main patterns: hypoechoic enlargement (active inflammation), nerve enlargement with hyperechoic add-on fascicles (axonal degeneration) and almost no enlargement ("cured" CIDP).
CIDP may be progressive or relapsing, most frequently clinically symmetric, sensorimotor with proximal and distal involvement developing over at least 8 weeks but variants as distal, multifocal, focal, motor or sensory CIDP have been also described. Cell-mediated and humoral mechanisms act together in an aberrant immune response to cause damage to peripheral nerves but, by molecular mimicry it causes other autoimmune system diseases. This paper focuses on the intersection of CIDP and other autoimmune disease with an emphasis on shared pathology and mutually characteristics.
132 studies on the registry are indexed under Polyradiculoneuropathy, Chronic Inflammatory Demyelinating; 50 are open to participants now.
Browse Polyradiculoneuropathy, Chronic Inflammatory Demyelinating studies →Centre Hospitalier Universitaire de Nīmes is the lead sponsor of 594 studies on the registry; 89 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Patients followed at Nîmes University Hospital between 2012 and 2021 with CIDP
Inclusion Criteria:
Patients with CIDP associated with systemic diseases
Other: None, pure observationnal study
Patients with CIDP without other systemic diseases
Other: None, pure observationnal study
pure observationnal study
Median nerve cross-sectional area
Comparison of median nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
ulnar nerve at wrist cross-sectional area
Comparison of ulnar nerve at wrist cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
ulnar at mid-arm nerve cross-sectional area
Comparison of ulnar nerve at mid-arm cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
ulnar nerve at elbow cross-sectional area
Comparison of ulnar nerve at elbow cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
radial nerve cross-sectional area
Comparison of radial nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Day of diagnosis of CIDP
superficial radial branch nerve cross-sectional area
Comparison of superficial radial branch nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
vagus nerve cross-sectional area
Comparison of vagus nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
C6 root nerve cross-sectional area
Comparison of C6 root nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
C5 root nerve cross-sectional area
Comparison of C5 root nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
sural nerve cross-sectional area
Comparison of sural nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
superficial fibula nerve cross-sectional area
Comparison of superficial fibula nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
tibial nerve at ankle cross-sectional area
Comparison of tibial nerve at ankle cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
popliteal nerve cross-sectional area
Comparison of popliteal nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
fibular nerve at neck cross-sectional area
Comparison of fibular nerve at neck cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
fibular at supra-neck nerve cross-sectional area
Comparison of fibular at supra-neck nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Time frame: Base line, Day 0
Started Mar 2022 (actual). Primary completion is estimated for Dec 2023, 21 months after the start.
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This study is withdrawn, as verified in Apr 2024. You cannot join it, but the record below documents what was studied.
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