A3GALT2: A Gene with a Crucial Role in Human Health


A3GALT2 (alpha-1,3-galactosyltransferase 2) is a gene that encodes an enzyme involved in the synthesis of glycoproteins and glycolipids. These molecules play vital roles in various cellular processes, including cell adhesion, cell-cell communication, and immune responses.

Associated Diseases

Mutations in the A3GALT2 gene have been linked to several human diseases, including:

Familial IgA Nephropathy (IgAN): IgAN is a kidney disease characterized by inflammation and progressive loss of kidney function. It is caused by the deposition of IgA-containing immune complexes in the kidneys. Mutations in A3GALT2 can impair the glycosylation of IgA, leading to its abnormal deposition and kidney damage.

Mucopolysaccharidosis Type VIA (MPS VIA): MPS VIA is a rare genetic disorder caused by a deficiency of the enzyme N-acetylglucosamine-6-sulfatase. This deficiency leads to the accumulation of glycosaminoglycans in cells and tissues, resulting in a range of symptoms including skeletal abnormalities, mental retardation, and organ damage. Mutations in A3GALT2 have been identified as a rare cause of MPS VIA.

Other diseases: A3GALT2 mutations have also been associated with other conditions such as:

  • Anti-IgA vasculitis: A rare autoimmune disorder characterized by inflammation of blood vessels and the deposition of anti-IgA antibodies
  • IgA deficiency: A condition in which the body produces little to no IgA antibodies, affecting immune responses
  • Deranged microdissection of IgA: A condition in which IgA is not properly secreted and accumulates in the kidneys

Did you Know ?

  • Approximately 1 in 100 people worldwide carry a mutation in the A3GALT2 gene.
  • Among individuals with IgAN, approximately 20-30% have mutations in A3GALT2.

Disclaimer: The information provided here is not exhaustive by any means. Always consult your doctor or other qualified healthcare provider with any questions you may have regarding a medical condition, procedure, or treatment, whether it is a prescription medication, over-the-counter drug, vitamin, supplement, or herbal alternative.