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CCR5 is a gene located on chromosome 3. It is responsible for production of a protein that is also called CCR5. It is thought to offer resistance to HIV and AIDS.

One mutational variant of the CCR5 gene consists of a deletion of 32 consecutive base pairs. This mutation, known as CCR5-Delta32, has been found to occur at rates of 5% to 14% in European populations but is very rare in African, Native American and East Asian populations [1].

The 23andMe test includes a report on CCR2 and resistance to HIV and AIDS. Testing for presence of the CCR5-Delta32 variant of this gene is also available from Family Tree DNA.


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