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Reviewed May 2009
What is the official name of the IL2RG gene?
The official name of this gene is “interleukin 2 receptor subunit gamma.”
IL2RG is the gene's official symbol. The IL2RG gene is also known by other names, listed below.
Read more about gene names and symbols on the About page.
What is the normal function of the IL2RG gene?
The IL2RG gene provides instructions for making a protein called the common gamma chain. This protein is a component of several different receptors that are involved in immune system function. The receptors span the cell membrane, with one end outside the cell like an antenna and the other end inside to transmit signals to the nucleus. Other proteins attach to these receptors, like a key in a lock, to trigger a series of chemical reactions inside the cell.
Receptors containing the common gamma chain are located on the surface of immature blood-forming cells in bone marrow. They partner with other proteins to direct blood-forming cells to form lymphocytes (a type of white blood cell). The receptors also regulate the growth and maturation of several subtypes of lymphocytes: T cells, B cells, and natural killer cells. These cells kill viruses, make antibodies, and help regulate the entire immune system.
Does the IL2RG gene share characteristics with other genes?
The IL2RG gene belongs to a family of genes called CD (CD molecules). It also belongs to a family of genes called fibronectin type III domain containing (fibronectin type III domain containing). It also belongs to a family of genes called IL (interleukins and interleukin receptors).
A gene family is a group of genes that share important characteristics. Classifying individual genes into families helps researchers describe how genes are related to each other. For more information, see What are gene families? in the Handbook.
How are changes in the IL2RG gene related to health conditions?
Where is the IL2RG gene located?
Cytogenetic Location: Xq13.1
Molecular Location on the X chromosome: base pairs 71,107,404 to 71,111,631
(Homo sapiens Annotation Release 107, GRCh38.p2) (
The IL2RG gene is located on the long (q) arm of the X chromosome at position 13.1.
More precisely, the IL2RG gene is located from base pair 71,107,404 to base pair 71,111,631 on the X chromosome.
See How do geneticists indicate the location of a gene? in the Handbook.
Where can I find additional information about IL2RG?
You and your healthcare professional may find the following resources about IL2RG helpful.
You may also be interested in these resources, which are designed for genetics professionals and researchers.
What other names do people use for the IL2RG gene or gene products?
See How are genetic conditions and genes named? in the Handbook.
Where can I find general information about genes?
The Handbook provides basic information about genetics in clear language.
These links provide additional genetics resources that may be useful.
What glossary definitions help with understanding IL2RG?
You may find definitions for these and many other terms in the Genetics Home Reference Glossary.
See also Understanding Medical Terminology.
References (6 links)
The resources on this site should not be used as a substitute for professional medical care or advice. Users seeking information about a personal genetic disease, syndrome, or condition should consult with a qualified healthcare professional. See How can I find a genetics professional in my area? in the Handbook.