Rare diseases · Sign or symptom
Decreased circulating IgG2 concentration
HP:0008348
What it means
A reduction in immunoglobulin levels of the IgG2 subclass in the blood circulation.
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: Decreased circulating IgG2 level · Decreased IgG2 level in blood · Immunoglobulin IgG2 deficiency · Reduced IgG2 levels
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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.