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The once-futuristic idea of sequencing every newborn child’s DNA to screen for genes that could shape their future health is being put to two major tests. The United Kingdom today announced plans to sequence the genomes of 100,000 newborns for about 200 rare genetic diseases starting next year. In New York City, a similar project already underway will screen for a slightly larger number of diseases in 100,000 babies from the city’s diverse population.
The goal is to catch treatable diseases that standard newborn screenings cannot detect. If sequencing delivers an early warning of a problem, the baby could receive care that averts permanent disability or even death.
But sequencing the full genomes of newborns raises a host of ethical questions, including who will get access to the data, and whether it will needlessly worry parents by revealing genes that may never cause serious illness. “We’re really cognizant of the complexity of the questions,” says Richard Scott, chief medical officer for Genomics England, the government-funded company running the U.K. project. At the same time, he says, “There’s a really...