Have a symptom?
See what questions
a doctor would ask.
Diseases » Friedreich's ataxia » Inheritance

Inheritance and Genetics of Friedreich's ataxia

Friedreich's ataxia: Genetics Information

Genetics of Friedreich's ataxia: FRDA is an autosomal recessive disease caused by a mutation of a gene called frataxin, which is located on chromosome 9. This mutation means that there are many extra copies of a DNA segment, the trinucleotide GAA. A normal individual has 8 to 30 copies of this trinucleotide, while FRDA patients have as many as 1000. The larger the number of GAA copies, the earlier the onset of the disease and the quicker the decline of the patient. (Source: Genes and Disease by the National Center for Biotechnology)

About inheritance and genetics:

Inheritance of Friedreich's ataxia refers to whether the condition is inherited from your parents or "runs" in families. The level of inheritance of a condition depends on how important genetics are to the disease. Strongly genetic diseases are usually inherited, partially genetic diseases are sometimes inherited, and non-genetic diseases are not inherited. For general information, see Introduction to Genetics.


By using this site you agree to our Terms of Use. Information provided on this site is for informational purposes only; it is not intended as a substitute for advice from your own medical team. The information on this site is not to be used for diagnosing or treating any health concerns you may have - please contact your physician or health care professional for all your medical needs. Please see our Terms of Use.

Home | Symptoms | Diseases | Diagnosis | Videos | Tools | Forum | About Us | Terms of Use | Privacy Policy | Site Map | Advertise