A 38-year-old male named Arvind Srinivasan was tested for spinocerebellar ataxia (SCA) due to a family history of SCA type 1. Genetic testing found an expansion of the SCA1 gene, indicating he has inherited SCA type 1. While currently asymptomatic, he is at risk of developing problems with speech and movement coordination and has a 50% chance of passing on the mutation. The test has a 2% error rate.