Rachel Karchin (IMAGE) Johns Hopkins University Caption Rachel Karchin, a Johns Hopkins assistant professor of biomedical engineering, is using a computer tool to help identify genetic mutations that may lead to cancer. Credit Will Kirk/JHU 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.