Keith Loeb, MD, PhD

Dr. Keith Loeb is an experimental hematopathologist. His basic science studies have focused on molecular processes leading to genetic instability and cancer. Using preclinical models, Dr. Loeb explores how abnormal cell cycle regulation impacts cell growth, differentiation and stem cell maintenance. His work has shown that misregulation of cyclin E, a key factor in driving DNA synthesis, can lead to chromosomal abnormalities and cancer. The loss of regulatory pathways that normally inhibit excess cyclin E function promotes more aggressive cancer development. Dr. Loeb is currently studying mutations that arise in super-enhancers and their relationship to chromosomal instability and gene expression. Dr. Loeb’s clinical work focuses on the pathologic complications of blood stem cell transplantation and hematopathology. He is an expert in the diagnosis and evaluation of graft-vs.-host disease and infectious complications associated with blood stem cell transplant. Dr. Loeb is currently studying the impact of donor-derived microglial cells in the brain following transplant.