IA Eesearchers (IMAGE) McGill University Caption The team of researchers used exome sequencing to identify RNF213 as suspicious in a patient group of 26 people from six families who experienced IA. Credit Shawn Hayward Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.