Researchers identified 116 such families and analyzed their genetic makeup using 341 different markers. They found that the estimated risk rate of fibromyalgia in siblings was 13.6%, compared to a 2% prevalence in the overall population.
They also identified particular genetic markers on a chromosome region labeled 17p11.2-q11.2. This is the first study to identify this particular region as involved in fibromyalgia.
Researchers concluded that these findings suggest genetics play a major role in who develops fibromyalgia. They say further studies involving these families should go forward in order to discover more about the risk and causal factors for the illness.
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