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Chromosome 16p13.3 duplication is a chromosome abnormality that can affect many parts of the body. People with this condition have an extra piece of genetic material (duplication) on chromosome 16 at a location designated p13.3. The symptoms and severity vary from person to person because not everyone with a 16p13.3 duplication has the same amount of extra DNA. Possible symptoms include developmental delay, speech delay, joint abnormalities, characteristic facial features, attention deficit, autism spectrum disorders, and underlying health problems such as heart conditions. Most cases are not inherited and occur randomly. Less commonly, the duplication is inherited from a parent. Regardless, a person with the duplication can pass it on to his/her child. Treatment is based on the signs and symptoms present in each person.
Source: GARD Last updated on 05-01-20
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