http://www.einstein.yu.edu - John Greally, M.B., B.Ch., Ph.D., discusses epigenetics (the study of inheritable changes in gene expression that don't result from changes in DNA sequence) in personalized medicine, including how research can help determine an individual's susceptibility to certain diseases, as well as treatments that can modulate epigenetics. Dr. Greally is director of the Center for Epigenomics at Einstein and attending physician, pediatrics, The Children's Hospital at Montefiore. This edition of Einstein On, a research and medicine podcast, is hosted by Gordon Earle, associate dean for communications and public affairs at Einstein.