Davis, CA, May 29, 2026 — Researchers at the UC Davis Weill School of Veterinary Medicine, led by Dr. Carrie Finno and graduate student Briana Brown, have reported the genetic cause of a fatal neurologic disease, equine juvenile spinocerebellar ataxia (EJSCA), in American Quarter Horse foals. A genetic test is available through the UC Davis Veterinary Genetics Laboratory (VGL).