Rare diseases · Sign or symptom

Anti-Hu antibody positivity

HP:5000016

What it means

The presence of autoantibodies (immunoglobulins) in the blood circulation that react against Hu.

Rare diseases that can present with this3

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-ANNA-1 antibody · Anti-Neuronal Nuclear Antibody type-1 antibody

Anti-Hu antibody positivity

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This 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.