The neurological disorder FXTAS (pronounced “fax-tas”) stems from a genetic premutation seen in one of every 151 women and one of every 468 men, called the FMR1 premutation. Just 15 years ago, Fragile X-associated tremor/ataxia syndrome (FXTAS) was discovered by Randi Hagerman, a doctor who saw many of her Fragile X syndrome patients had grandfathers