Study finds genetic variation that protects against Parkinson's disease

An international team of researchers led by neuroscientists at Mayo Clinic in Florida has found a genetic variation they say protects against Parkinson's disease. The gene variants cut the risk of developing the disease by nearly 20 percent in many populations. The study, published in the online Aug. 31 issue of Lancet Neurology, also reports the discovery of different variants of the same gene, LRRK2 -- the most important Parkinson's risk gene found to date -- that double Parkinson's risk in Caucasians and Asians.

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