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GCNT2

Gene

glucosaminyl (N-acetyl) transferase 2 (I blood group)

HGNCHGNC:4204EnsemblENSG00000111846NCBI Gene2651
Locus: gene with protein productLocation: 6p24.3-p24.2

Also known as

Symbols and names change; identity (the HGNC ID) does not. Previous and alternative forms are kept distinct.

Also known asNACGT1 · II · GCNT5 · CCAT · IGNT · NAGCT1 · bA421M1.1 · bA360O19.2 · ULG3
View full nomenclature history (14)
Previous symbolsNACGT1, II, GCNT5, CCAT
Alias symbolsIGNT, NAGCT1, bA421M1.1, bA360O19.2, ULG3
Previous namesglucosaminyl (N-acetyl) transferase 2, I-branching enzyme (I blood group), glucosaminyl (N-acetyl) transferase 5, cataract, congenital
Alias namesIi blood group, unassigned linkage group 3

Associated diseases

via associated_with

Diseases linked to this gene through the canonical GENE→DISEASE (associated_with) relation, drawn from Open Targets' top-ranked associations by overall score — not the full association set. Disease-level detail lives on each disease's own page.

Total congenital cataract
Genetic Diseases, Inborn
Early-onset non-syndromic cataract
Blood Coagulation Disorders
Hair color
Neuroendocrine Tumors
Tooth disorder

Drawn from Open Targets’ top 10 associations by overall score for this gene — the subset resolved to a canonical disease. Lower-ranked associations, and diseases not yet canonicalised, are not shown.

Gene family

HGNC gene-group membership.

Glucosaminyl (N-acetyl) transferases/xylosyltransferasesBlood group antigens

Provenance

HGNCCanonical human gene identity from HGNC (release 2026-07-07), updated 2023-01-20.
Open TargetsGene–disease associations from the Open Targets Platform.