Type I transferrin isoform profile

What it means

Abnormal transferrin isoform profile consistent with a type I congenital disorder of glycosylation. In the traditional nomenclature for congenital disorders of glycosylation, absence of entire glycans was designated type I, and loss of one or more monosaccharides as type II.

There are several methods in use with which this feature can be diagnosed. Using HPLC analysis an increased asialo- and disialotransferrin and reduced tetrasialotransferrin are observed. Using immunoaffinity column analysis, the mono-oligosaccharide/di-oligosaccharide transferrin ratio, and/or the a-oligosaccharide/di-oligosaccharide transferrin ratio are abnormal.

Rare diseases that can present with this9

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: Abnormal isoelectric focusing of serum transferrin, type I pattern · Isoelectric focusing of serum transferrin consistent with CDG type I · Type 1 transferrin isoform profile