23andMe Is Terrifying, But Not for the Reasons the FDA Thinks

Charles Seife:

If there’s a gene for hubris, the 23andMe crew has certainly got it. Last Friday the U.S. Food and Drug Administration (FDA) ordered the genetic-testing company immediately to stop selling its flagship product, its $99 “Personal Genome Service” kit. In response, the company cooed that its “relationship with the FDA is extremely important to us” and continued hawking its wares as if nothing had happened. Although the agency is right to sound a warning about 23andMe, it’s doing so for the wrong reasons.
Since late 2007, 23andMe has been known for offering cut-rate genetic testing. Spit in a vial, send it in, and the company will look at thousands of regions in your DNA that are known to vary from human to human–and which are responsible for some of our traits. For example a site in your genome named rs4481887 can come in three varieties. If you happen to have what is known as the GG variant, there is a good probability that you are unable to smell asparagus in your urine; those blessed with the GA or AG varieties are much more likely to be repulsed by their own pee after having a few spears at Spargelfest.
At first, 23andMe seemed to angle its kit as a fun way to learn a little genetics using yourself as a test subject. (“Our goal is to connect you to the 23 paired volumes of your own genetic blueprint… bringing you personal insight into ancestry, genealogy, and inherited traits,” read the company’s website.) The FDA had little problem with the company telling you why you had dry ear wax (rs17822931) or whether you’re likely to sneeze when you look at a bright light (rs10427255).