Marlena Schoenberg Fejzo (born February 20, 1968) is an American medical scientist and assistant professor.
From 2000-2020, while working on the side on Hyperemesis Gravidarum due to her own personal experience with the condition,[1] she worked on ovarian cancer in the department of Medicine at the University of California, Los Angeles, in the laboratory of Dennis J. Slamon.
[2] She has published peer-reviewed scientific articles on many diseases of women including ovarian cancer, breast cancer, multiple sclerosis, and discovered the first genes for uterine fibroids, nausea and vomiting of pregnancy, and hyperemesis gravidarum.
[5] In December, 2023, in collaboration with Stephen O'Rahilly and a team of international researchers, Fejzo published a study that identified the mechanism involved in nausea and vomiting of pregnancy and HG.
[6] The study identified ways to potentially prevent and treat both nausea and vomiting in pregnancy (common misnomer "morning sickness") and HG.