Dr. Katherine Gregory, PhD, RN is a nurse scientist and research faculty in the Departments of Newborn Medicine and Nursing at Brigham and Women’s Hospital and Assistant Professor or Pediatrics at Harvard Medical School. The focus of Dr. Gregory’s research is on the human microbiome, specifically the intestinal microbiome of the preterm infant. Dr. Gregory and her colleagues have investigated the role that the intestinal microbiome plays in necrotizing enterocolitis (NEC), a catastrophic inflammatory bowel disease that is a major contributor to neonatal morbidity and morbidity. In addition, she has explored the influence of clinical factors such as gestational age, mode of birth, antibiotics, and nutrition on acquisition of intestinal microbiome following preterm birth. Dr. Gregory has also investigated the usefulness of urinary proteins and inflammatory cytokines as early biomarkers of NEC in a population of preterm infants. In this work, Dr. Gregory and her colleagues identified a measure of gut injury that was found to be a useful predictor of NEC as early as seven days prior to the onset of disease. Dr. Gregory is Chair of the multidisciplinary Clinical Practice Council within the Department of Newborn Medicine. This council is responsible for developing and implementing clinical practice guidelines, ensuring that care provided to infants in all settings of the hospital is uniformly excellent and evidence based. Dr. Gregory is also an Editor of Journal of Perinatal and Neonatal Nursing.