Genetic testing company 23andMe's bankruptcy has led to a new consumer privacy issue: what happens to the DNA of millions of Americans when it goes on sale?

Me, a standard-bearer for the at-home health movement, announced on March 23 that it has filed for Chapter 11 bankruptcy to facilitate a sale, prompting many of its 15 million customers to wonder: What happens to my genetic data now?

Bankrupt genetic testing firm 23andMe Holding Co. won permission from a judge to try to sell information about customers’ medical and ancestry-related data, a trove that is considered the most valuable asset in the insolvency case — and has become a source of privacy and safety concerns amid the company’s collapse.