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Reviewed August 2014
What is the official name of the DHCR24 gene?
The official name of this gene is “24-dehydrocholesterol reductase.”
DHCR24 is the gene's official symbol. The DHCR24 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 DHCR24 gene?
The DHCR24 gene provides instructions for making an enzyme called 24-dehydrocholesterol reductase. This enzyme is involved in multiple pathways that produce cholesterol. Cholesterol is a waxy, fat-like substance that can be obtained from foods that come from animals (particularly egg yolks, meat, poultry, fish, and dairy products). It can also be produced in various tissues in the body. For example, the brain cannot access the cholesterol that comes from food, so brain cells must produce their own. In one pathway, 24-dehydrocholesterol reductase is involved in the final step of cholesterol production (synthesis), converting the fat desmosterol into cholesterol. In a different pathway, 24-dehydrocholesterol reductase converts the fat lanosterol into another fat called 24,25-dihydrolanosterol. The end product of both of these pathways is cholesterol.
Cholesterol is necessary for normal embryonic development and has important functions both before and after birth. Cholesterol is an important component of cell membranes and the fatty protective covering that insulates nerves (myelin). Cholesterol also attaches (binds) to certain proteins to turn on (activate) the hedgehog signaling pathway, which is critical for normal development of many parts of the body before birth. Additionally, cholesterol plays a role in the production of certain hormones and digestive acids.
How are changes in the DHCR24 gene related to health conditions?
Where is the DHCR24 gene located?
Cytogenetic Location: 1p32.3
Molecular Location on chromosome 1: base pairs 54,849,627 to 54,887,248
(Homo sapiens Annotation Release 107, GRCh38.p2) (
The DHCR24 gene is located on the short (p) arm of chromosome 1 at position 32.3.
More precisely, the DHCR24 gene is located from base pair 54,849,627 to base pair 54,887,248 on chromosome 1.
See How do geneticists indicate the location of a gene? in the Handbook.
Where can I find additional information about DHCR24?
You and your healthcare professional may find the following resources about DHCR24 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 DHCR24 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 DHCR24?
You may find definitions for these and many other terms in the Genetics Home Reference Glossary.
See also Understanding Medical Terminology.
References (5 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.