Jacobsen Syndrome (image) San Diego State University Share Print E-Mail Caption A deletion at one end of chromosome 11 is responsible for the rare genetic disorder known as Jacobsen syndrome. Credit Courtesy of Paul Grossfeld. Usage Restrictions None Share Print E-Mail 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.