Rare diseases · Sign or symptom

Reduced level of N-acetylglucosaminyltransferase II

HP:0003655

What it means

An abnormality of glycoprotein metabolism related to a decreased level of alpha-1,6-mannosylglycoprotein 2-beta-N-acetylglucosaminyltransferase activity.

Rare diseases that can present with this1

Very common80–99%

1

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: Deficient N-acetylglucosaminyltransferase II

Reduced level of N-acetylglucosaminyltrans…

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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.