Alternate forms of a gene or DNA sequence (genetic variant) at a particular chromosome location.
For example, different alleles of the ABO gene on human chromosome 9 determine ABO blood type.
A novel mutation is present in 39 percent of Parkinson's disease patients of African heritage, but is virtually absent in those of European descent, a global genome wide association study has found...
Having one or two APOE-ε4 alleles, a genetic variant associated with increased risk of Alzheimer's and cardiovascular disease, has been linked to a larger number of offspring in women in Bolivia...
Key gene variants linked to running success have been identified in a small study on previously untrained participants...
A specific gene allele may contribute to the higher severity of stroke seen among black populations, and also the reason they are less responsive to commonly used stroke medications...
Two potential new treatments for Alzheimer's disease using the CRISPR genome editing approach have been reported at the Alzheimer's Association International Conference, in Amsterdam, the Netherlands...
A chemically-modified DNA enzyme can be used to 'silence' a harmful gene mutation found in many types of cancers...
A technique commonly used to amplify minute quantities of DNA to allow genetic testing of early human embryos has been shown to be error-prone. Potentially harmful unintended mutations in genome-edited embryos were also found...
A genetic variant understood to have protected people against the Black Death, has been shown to also be protective against severe COVID-19, a study has found...
The genes that encode for immune cell receptors differ substantially between people, giving scientists an insight into why people react differently to disease and medicine...
Genetic signatures have been used to predict how a patient's immune system might respond to sepsis, COVID-19, and influenza...
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