An alliance of individuals and organizations working together to prevent Jewish Genetic Diseases through education, awareness and screening

For Medical Professionals

Medical professionals, especially OB/GYNs and pediatricians, can play a vital role in promoting timely and accurate carrier screening for individuals of Jewish heritage. The JGDC strongly urges medical professionals to identify patients of Jewish heritage* (at least one grandparent) and interfaith couples in their childbearing years and counsel them about the importance of preconception carrier screening for the Jewish genetic diseases.

> Resources for Genetic Screening

The Importance of Preconception Carrier Screening for Patients of Jewish Heritage and Interfaith Couples

Advances in genetic science has led to the identification of mutations linked to genetic diseases more prevalent in persons of Jewish heritage. The JGDC recommends that anyone of Jewish heritage* and interfaith couples, who are planning to start or add to their family, should be screened for the full panel of Jewish genetic diseases. If results indicate a carrier couple, they can be referred to a genetic counselor who can provide them with the reproductive options available to them.

Although carrier screening has become more widely accessible for the Jewish genetic diseases, there still remain dozens of children born every year affected by these devastating diseases. Patients turn to their healthcare professionals as trusted sources of information, therefore the JGDC asks for your help in promoting timely and accurate carrier screening so that every Jewish and interfaith couple are made aware of their carrier status.

*An estimated 90% of American Jews are Ashkenazi, tracing their heritage to Eastern Europe, France or Germany. The remaining 10% are Sephardic linking their heritage to the Mediterranean or Mizrahi tracing their heritage to Persia, Iran or the Middle East. Persons of Sephardic or Mizrahi background should be referred to a genetic counselor, as carrier screening is dependent on their country of origin, unlike Ashkenazi disease, where there is a more standard panel.

JGDC Grand Rounds Program

The JGDC has presented our Grand Rounds Program to hospitals throughout the country. If you would like us to bring this program to your hospital, please contact the JGDC by emailing us at or calling us at 855-642-6900.

Upcoming Grand Rounds Programs

Englewood Hospital and Medical Center/Pediatrics, Englewood, NJ: December 13, 2016, 8:30-9:15am

Past Grand Rounds Programs

Points to cover with Jewish patients or interfaith couples:

Patients with any Jewish ancestry, including interfaith couples, should have carrier screening for Jewish genetic diseases.

The best time to be screened is before pregnancy. There are multiple options for a carrier couple to have a healthy family.

Screening is available: In a physician’s office (usually an OB/GYN), medical genetics program, or online genetics education, counseling and screening program.

Screening is based on family heritage. Jewish genetic heritage does not depend on religious practice or observance.

Nearly 1 in 2 Ashkenazi Jews (German, Eastern European or French) is a carrier for at least one Jewish genetic disease.

Individuals may opt to do expanded carrier screening to include disorders not necessarily more common in Jewish ancestry (Pan Ethnic Panels).

Carrier screening for all Jewish genetic diseases by DNA analysis can be done using blood or saliva. For Tay-Sachs disease screening, enzyme analysis using blood (in addition to DNA) is required.

Direct patients to the JGDC website for the latest carrier screening resources, genetic counseling resources, and disease descriptions.

Promote awareness by distributing the JGDC brochure to patients of childbearing age.

Special Cases

Individuals of Mixed Heritage

Given the rates of intermarriage among the American Jewish population, patients with mixed heritage may not consider themselves at risk for Jewish genetic diseases.  For genetics purposes, a patient with even one grandparent of Jewish heritage is considered a candidate for carrier screening.

Couples of Mixed Heritage

In the case of a couple in which one member is born Jewish and the other is not, the general recommendation is to screen the Jewish partner first. If he or she is found to be a carrier, a genetic counselor can help the couple understand the screening options for the non-Jewish partner.

Screening when Donor Sperm or Egg is Utilized

In terms of a couple (mixed sex or same sex) or a single woman using donor sperm or eggs, it is important that any person who is providing either egg or sperm, who is of Jewish heritage, be screened for Jewish genetic diseases, whether parent or donor.


Physician’s Resources

Expanded Carrier Screening in Reproductive Medicine—Points to Consider
A Joint Statement of the American College of Medical Genetics and Genomics, American College of Obstetricians and Gynecologists, National Society of Genetic Counselors, Perinatal Quality Foundation, and Society for Maternal-Fetal Medicine
Janice G. Edwards, MS, Gerald Feldman, MD, PhD, James Goldberg, MD, Anthony R. Gregg, MD, Mary E. Norton, MD, Nancy C. Rose, MD, Adele Schneider, MD, Katie Stoll, MS, Ronald Wapner, MD, and Michael S. Watson, MD

Literature Review of Preconception Expanded Carrier Screening
by Shivani Nazareth, CGC
Director, Medical Affairs, Counsyl

How rare sheep from biblical times may help kids with a deadly genetic disease
he Washington Post, Health and Science, May 23, 2016
by Eric Valance

Genetic Testing Before Pregnancy Should Be as Common as Taking Folic Acid
Very few pre-pregnancy checklists include carrier screening as an important health item. 
by Shivani Nazareth, CGC
Director, Medical Affairs, Counsyl
Contributor, U.S. News and World Report, July 28, 2016