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Reviewed May 2013
What is the official name of the ARID1B gene?
The official name of this gene is “AT-rich interaction domain 1B.”
ARID1B is the gene's official symbol. The ARID1B 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 ARID1B gene?
The ARID1B gene provides instructions for making a protein that forms one piece (subunit) of several different SWI/SNF protein complexes. SWI/SNF complexes regulate gene activity (expression) by a process known as chromatin remodeling. Chromatin is the network of DNA and protein that packages DNA into chromosomes. The structure of chromatin can be changed (remodeled) to alter how tightly DNA is packaged. Chromatin remodeling is one way gene expression is regulated during development; when DNA is tightly packed, gene expression is lower than when DNA is loosely packed.
Through their ability to regulate gene activity, SWI/SNF complexes are involved in many processes, including repairing damaged DNA; copying (replicating) DNA; and controlling the growth, division, and maturation (differentiation) of cells. The ARID1B protein and other SWI/SNF subunits are thought to act as tumor suppressors, which keep cells from growing and dividing too rapidly or in an uncontrolled way.
The ARID1B subunit is able to attach (bind) to DNA and is thought to help target SWI/SNF complexes to the chromatin location that needs to be remodeled.
How are changes in the ARID1B gene related to health conditions?
Where is the ARID1B gene located?
Cytogenetic Location: 6q25.1
Molecular Location on chromosome 6: base pairs 156,777,892 to 157,210,779
(Homo sapiens Annotation Release 107, GRCh38.p2) (
The ARID1B gene is located on the long (q) arm of chromosome 6 at position 25.1.
More precisely, the ARID1B gene is located from base pair 156,777,892 to base pair 157,210,779 on chromosome 6.
See How do geneticists indicate the location of a gene? in the Handbook.
Where can I find additional information about ARID1B?
You and your healthcare professional may find the following resources about ARID1B 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 ARID1B 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 ARID1B?
You may find definitions for these and many other terms in the Genetics Home Reference Glossary.
See also Understanding Medical Terminology.
References (8 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.