Our research

Discovery. With purpose.

Fejzo’s current work is centered on root cause identification, prediction, prevention, diagnosis, and treatment of adverse pregnancy conditions including HG and preeclampsia to improve maternal, fetal, and child outcomes.

From the root cause
to a healthier future.

Our research brings together genetics, molecular biology, and clinical evidence to address conditions that have too often been misunderstood. The goal is to turn biological insight into meaningful progress in women’s health.

Marlena Fejzo presenting GDF15 research at the White House
Marlena Fejzo presenting GDF15 research at the White House

A closer look

Discovery begins
with the details.

Studying genetic variation helps reveal the biological roots of conditions affecting women’s health.

Chromosome microscopy image with chromosome 12 marked
Chromosome microscopy · From the research collection

GENETICS & DISCOVERY

Understanding the cause

Our work connects genetic variation with the GDF15 hormone pathway to understand why some women experience severe pregnancy sickness. Multi-ancestry studies help expand this understanding across populations.

Related publications

PREDICTION & PREVENTION

From discovery to care

Current research explores preconception risk prediction, potential prevention strategies, and the relationship between treatment, GDF15 levels, and HG symptoms. These are research areas, not clinical recommendations.

Related publications

MATERNAL & CHILD HEALTH

Health across generations

We study HG and preeclampsia, including circulating risk proteins during pregnancy and the relationship between genetic variants and birthweight, to better understand maternal and child outcomes.

Related publications
Marlena Fejzo, PhD, TIME Woman of the Year portrait

Marlena Fejzo · TIME Woman of the Year, 2024

Meet the principal investigator

Marlena Fejzo, PhD

Marlena Fejzo, PhD is a 2024 TIME Woman of the Year honored for her central role in the discovery of the main cause of morning sickness and hyperemesis gravidarum. She is a Harvard-trained women’s health scientist who has published peer-reviewed articles on many diseases of women including ovarian and breast cancer, multiple sclerosis, and discovered the first genes for uterine fibroids, nausea and vomiting of pregnancy (NVP), and hyperemesis gravidarum (HG).

Fejzo is a Clinical Professor at the University of Southern California, Chief Scientific Officer of The Morning Sickness and HG Clinic, Research Director and Advisory Council Member of the HER Foundation, Board Member of the Foundation for Women’s Health, Member of Women’s Health Access Matters, Member of former First Lady Jill Biden’s Women’s Health Network, and a consultant for NGM Bio.

In addition, she is a TIME100 Health Honoree, received the National Organization for Women Victoria Mastrobuono Award in Women’s Health, Forbes 50 Over 50 award in Innovation, is a Falling Walls Breakthrough of the Year Finalist, and the inaugural BII & Science Translational Medicine Prize for Innovations in Women’s Health grand prize winner.

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