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Ephrat Levy-Lahad, MD

Professor of Internal Medicine and Medical Genetics
Hebrew University
Director, Medical Genetics Institute
Shaare Zedek Medical Center
Jerusalem, Israel

Current Research

Goal: To increase genetic screening in high-risk populations and advance the understanding of inherited genetic risk factors in diverse populations.

Impact: Dr. Levy-Lahad is working to determine the frequency of BRCA1 and BRCA2 mutations among non-Ashkenazi Jewish people. These studies may lead to a new paradigm in population screening for inherited predisposition to breast cancer and advance genetic precision medicine for cancer prevention. In a separate but related study, she is working with BCRF collaborators, Dr. Moien Kanaan and Dr. Mary-Claire King on the Middle East Breast Cancer Study, aimed at increasing access to genetic testing in breast cancer patients of Arab descent to understand the frequency and causes of inherited risk.

What’s next: Both projects continue to explore genetic mutations responsible for breast cancer in non-Ashkenazi  Middle Eastern women and determine whether all Jewish people should be screened for BCRA mutations.

Dr. Levy-Lahad’s work is aimed at understanding how best to identify those who carry genetic mutations that make them more prone to developing breast cancer as early as possible, which is when prevention interventions are most effective. She is studying populations—women of Arab descent (in collaboration with Drs. Kanaan and King) and non-Ashkenazi Jewish women—to identify common and new genetic bases of inherited breast cancer.

Full Research Summary

Research area: Advancing the understanding of the genetic mutations that predispose diverse groups of women to breast cancer.

Impact: Dr. Levy-Lahad is working on two related projects, the Israel Breast Cancer Study (IBCS) and the Middle East Breast Cancer Study (MEBCS) with BCRF colleagues Dr. Mary-Claire King and Dr. Moien Kanaan. As part of IBCS, she has evaluated the frequency that BRCA1 and BRCA2 mutations occur in Ashkenazi Jewish people, a group far more likely to carry these mutations than the general population. Her work on MEBCS entails looking for new breast cancer genes in the Arab population and also providing genetics services to the Palestinian population. Collectively, these studies could identify more women and families who are at high risk of breast cancer, allowing them to take advantage of preventive and early detection strategies.

Current investigation: Dr. Levy-Lahad is investigating the prevalence of BRCA1 and BCRA2 mutations in non-Ashkenazi Jews—who represent diverse ancestries, not unlike the population of the USA or Europe—to gain insight on the rational to justify universal genetic screening. With Drs. King and Kanaan, she has been conducting genetic testing of more than 1,200 breast cancer patients of Arab ancestry. It is the largest cohort of Arab women in the world to undergo such testing.

What they’ve learned so far: Through IBCS, Dr. Levy-Lahad has identified genetic mutations in non-Ashkenazi Jewish people that are often unique to a specific family. In the MEBCS, she and her collaborators have characterized the distinctive profile of hereditary breast cancer risk among Arab women. In addition, the MEBCS team has also created training programs in cancer genetics for Palestinian nurses and social workers to increase awareness and acceptance of genetic counseling in Palestinian women and their families.

What’s next: Dr. Levy-Lahad will continue her efforts on the Israel Breast Cancer Study to determine the frequency of BRCA1 and BRCA2 mutations in non-Ashkenazi Jewish people and pursue new cancer-causing mutations in women of Arab ancestry with her MEBCS colleagues.


Ephrat Levy-Lahad, MD, is Professor of Internal Medicine and Medical Genetics at Hebrew University and Director of the Medical Genetics Institute at Shaare Zedek Medical Center in Jerusalem. She is one of the world's foremost authorities on inherited breast cancer among Jewish women. Dr. Levy-Lahad received her medical degree from the Hebrew University-Hadassah Medical School in Jerusalem, Israel. She completed a residency in Internal Medicine at Shaare Zedek Medical Center in Jerusalem, and a three-year fellowship in Medical Genetics at the University of Washington in Seattle. Since 1996, she has been Director of the Medical Genetics Institute and senior physician in the Department of Medicine at Shaare Zedek Medical Center. Dr. Levy-Lahad holds a faculty appointment as Associate Professor in Medicine and Genetics at the Hebrew University-Hadassah Medical School in Jerusalem.

Professor Levy-Lahad's clinical laboratory includes cancer genetics diagnostics and a large pre-implantation diagnosis service. Her research laboratory focuses on genetics of breast cancer, in particular the BRCA1 and BRCA2 genes, and on genetic and environmental factors that affect the risk associated with these mutations. She studies application of genetic testing to population screening and large-scale prevention efforts. Her laboratory is also involved in elucidating the genetic basis of rare diseases, including recent discoveries of novel genes for a rare congenital neurological disease in Ashkenazi Jews, and for defects in ovarian development.

Professor Levy-Lahad is active in bioethical aspects of genetic research, and is currently co-Chair of the Israel National Bioethics Council. She is a member of Israel's National Council for Women's Health and the National Council for Gynecology, Perinatal Medicine and Genetics. Internationally, she was a member of UNESCO's IBC (International Bioethics Committee) (2006-2009).

Large Researcher Headshot - Levy Lahad

BCRF Investigator Since


Donor Recognition

The Roslyn and Leslie Goldstein Award

Area(s) of Focus