In 2005, Dr. Njoku opened the door for understanding the pathways in the liver-injury process when she published results of her work with a mouse model that replicated the drug reaction in the liver that had been seen in patients. In her institution, she has served as director of the Pediatric Anesthesiology Fellowship program from 2007 – 2018, on the Research Committee since 2013, and the Principal Investigator of her lab where she has investigated mechanisms that initiate injury in the liver and other organs in addition to mechanisms responsible for the increased prevalence of drug-induced autoimmune liver disease in female patients since 2009.