New GeneDx Study Reveals Racial Disparities in Genetic Diagnosis Due to Systemic Barriers, Not Diagnostic Yields
WGSWW 11.07.2024

Data demonstrates the strength of GeneDx’s diverse database; exome diagnostic rate is high regardless of patient’s ancestral background
Findings uncover the diagnostic yield of exome sequencing for making an accurate and precise genetic diagnosis in children with rare diseases does not vary significantly between non-white and non-Hispanic white patients. Data from the study reveals that 46% of patients evaluated were non-white and within this group, the diagnostic rate for GeneDx’s exome testing when both parents were also tested remained consistently high at 27.1% compared to 27.4% for non-Hispanic white patients. These findings demonstrate disparities in precise genetic diagnosis are not due to diagnostic yields, but rather larger systemic structural barriers which may include complex workflows, costs, clinician shortages, unconscious biases and more.
“Our findings show that when people are tested, diagnostic rates among populations are comparable,” said
“The growing utilization of GeneDx’s exome and genome testing enriches our unparalleled diverse dataset and creates a flywheel effect. With every test we complete, we deepen our understanding of disease-gene connections to inform more definitive diagnoses regardless of ancestral background. These are critical findings to ensure health equity within genomics,” said Dr.
The study was constructed using GeneDx’s industry leading diverse dataset of more than 700,000 clinical exome and genomes. The data was presented this week at the
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