Developing technologies for personalized medicine may be misused to popularize the idea that one can infer a person’s genetic makeup from observer-defined or self-reported assignment to a race or ethnic group.
Chromosomal microarray analysis reveals many gene variants of unknown significance. The uncertainty about these variants—might they be deleterious or are they benign?—complicates genetic counseling.
Ruth M. Farrell, MD, MA, Holly Pederson, MD, and Shilpa Padia, MD
Though they claim to, direct-to-consumer genetic tests may not correctly identify an individual's ancestral background, and thus may overstate or understate one's risk for heritable disease.