Genetic Defects

Multi-gene test predicts early heart disease risk

A risk score based on multiple genetic differences, or polygenic risk score, predicted significantly more cases of early-onset heart disease than standard tests for single genetic defects, according to new research in the ...

Jan 08, 2018
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Gene mutation causes chronic bad breath

For the first time, researchers have uncovered that bad breath can be caused by a genetic defect. A mutation in the gene SELENBP1 leads to the absence of the protein that converts the sulphur compound methanethiol. Researchers ...

Dec 19, 2017
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A genetic disorder is an illness caused by abnormalities in genes or chromosomes, especially a condition that is present from before birth. Most genetic disorders are quite rare and affect one person in every several thousands or millions.

A genetic disorder may or may not be a heritable disorder. Some genetic disorders are passed down from the parents' genes, but others are always or almost always caused by new mutations or changes to the DNA. In other cases, the same disease, such as some forms of cancer, may be caused by an inherited genetic condition in some people, by new mutations in other people, and by non-genetic causes in still other people.

Some types of recessive gene disorders confer an advantage in certain environments when only one copy of the gene is present.

This text uses material from Wikipedia licensed under CC BY-SA

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