Timothy Graubert, M.D. and Matthew Walter, M.D., Washington University School of Medicine (image) Washington University School of Medicine Share Print E-Mail Caption By mapping the evolution of cancer cells in patients with myelodysplastic syndromes who later died of leukemia, Washington University scientists Timothy Graubert, M.D., (left) and Matthew Walter, M.D., have found clues to suggest that targeted cancer drugs should be aimed at mutations that develop early in the disease. Credit Michael Purdy, Washington University Usage Restrictions Credit to Washington University 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.