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Sergey Brin, a Google co-founder, said Thursday that he has a gene mutation that increases his likelihood of contracting Parkinson’s disease, a degenerative disorder of the central nervous system that can impair speech, movement and other functions.
Mr. Brin, who made the announcement on a blog, says he does not have the disease and that the exact implications of the discovery are not clear. Studies show that his likelihood of contracting Parkinson’s disease in his lifetime may be 20 percent to 80 percent, Mr. Brin said.
