Rare diseases · Sign or symptom
Anti-CV2/CRMP5 antibody positivity
HP:5000006
What it means
The presence of autoantibodies (immunoglobulins) in the blood circulation that react against CV2/CRMP5. Anti-CV2/CRMP5 autoantibody is the most commonly detected anti-neuronal autoantibody. Patients with typical paraneoplastic chorea show fully developed chorea in the course of weeks to months with acute inflammation in the striatum.
Rare diseases that can present with this1
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Anti-collapsin response-mediated protein 5 antibody · Anti-CV2 antibody · Anti-CV2/collapsin response mediator protein (CRMP)5 antibody
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.