Genetics studies have a diversity problem that researchers struggle to fix

Apr 25 2024KFF Health News When he recently walked into the dental clinic at the Medical University of South Carolina donning a bright-blue pullover with "In Our DNA SC" embroidered prominently on the front, Lee Moultrie said, two Black women stopped him to ask questions.

Lack of diversity in genetics research has real health care implications. Since the completion more than 20 years ago of the Human Genome Project, which mapped most human genes for the first time, close to 90% of genomics studies have been conducted using DNA from participants of European descent, research shows. And while human beings of all races and ancestries are more than 99% genetically identical, even small differences in genes can spell big differences in health outcomes.

Some research projects require more time from their volunteers, which can skew the pool of participants, Graff said, because not everyone has the luxury of free time. "We need to be even more creative in how we obtain people to help contribute to studies," she said. In South Carolina, for example, the NIH works with Cooperative Health, a network of federally qualified health centers near the state capital that serve many patients who are uninsured and Black, to recruit patients for All of Us. Eric Schlueter, chief medical officer of Cooperative Health, said the partnership works because their patients trust them.

Theoretically, researchers at the NIH and the Medical University of South Carolina may be trying to recruit some of the same people for their separate genetics studies, although nothing would prevent a patient from participating in both efforts.

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