Source:http://linkedlifedata.com/resource/umls/id/C1456542
MEDLINEPLUS: <p>A genetic disorder is a disease caused by a different form of a gene, called a variation, or a change in a gene, called a mutation. Genetic brain disorders specifically affect the development and function of the brain.</p><p>Some genetic brain disorders are due to random gene mutations or mutations caused by environmental exposure, such as cigarette smoke. Other disorders are inherited, which means that a mutated gene or group of genes is passed down through a family. Still other disorders are due to a combination of genetic changes and other outside factors. Some examples of genetic brain disorders include <a href='http://www.nlm.nih.gov/medlineplus/leukodystrophies.html'>leukodystrophies</a>, <a href='http://www.nlm.nih.gov/medlineplus/phenylketonuria.html'>phenylketonuria</a>, <a href='http://www.nlm.nih.gov/medlineplus/taysachsdisease.html'>Tay-Sachs disease</a>, and <a href='http://www.nlm.nih.gov/medlineplus/wilsondisease.html'>Wilson disease</a>. </p><p>Many people with genetic brain di