"Scientists and genetic counsellors say that these unregulated tools can harm individuals and society, by causing anxiety, unnecessary medical expenses, stigmatization and worse...."

"The test 'is not grounded in science. It is not predictive. It won’t tell you anything,' says Benjamin Neale, a geneticist at the Broad Institute and an author of the Science analysis. He and his colleagues examined the DNA of around 475,000 people and found several genetic variations loosely correlated with people who said they'd had sex with someone of the same sex at least once. But none of the variants was so prevalent that the researchers could use them to predict a person’s sexual identity.... [The app's creator Joel] Bellenson says that there are much simpler ways of discovering a person's sexual preference, such as looking at their social-media accounts. 'The idea that a government would need a DNA test to figure out if someone is gay is ridiculous,' he adds.... [He] says he whipped together his app in a weekend. He knew enough about genetics and computer programming to write an algorithm, and find a home for it online. 'Genetics and bioinformatics is so mature,' he says. 'Academia can no longer control it.'"

From "Controversial ‘gay gene’ app provokes fears of a genetic Wild West/Debate highlights broader concerns about tools that use the results of direct-to-consumer genetic testing" (Nature).