Making Exomes More Revealing

RARECast

Standard exome sequencing, which maps the protein coding regions of the genome, will deliver a diagnosis of someone with a rare disease in about 35 percent of cases. Ambry Genetics' ExomeReveal seeks to improve the diagnostic yield of these tests by adding RNA analysis to exome testing. That can help resolve variants of uncertain significance in about 2 to 3 percent of the cases. Ambry will also perform continuous reanalysis of the results over time to take into account new gene-disease relationships as they are discovered. This provides a diagnosis to about 5 percent of those without an answer. We spoke to Brigette Tippin Davis, chief operating officer for Ambry Genetics, about the diagnostic odyssey for people with a rare disease, Ambry’s new ExomeReveal test, and what people can do to accelerate their path to a diagnosis.