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A San Diego County woman has filed a lawsuit seeking class-action status against 23andMe, alleging that the company knowingly misled consumers into thinking that its DNA test kits produce a reliable look at a person’s relative risk for hundreds of diseases and disorders.

Lisa Casey also alleges that the Mountain View-based company falsely led consumers to believe the same kits and accompanying DNA analysis could identify whether a person carries certain potentially problematic genes, and how well that individual might respond to various medications.

Casey is asking for at least $5 million in damages on behalf of 23andMe customers.

“There is no analytical or clinical validation for the (personal genome service) advertised by 23andMe,” Casey said in her claim, which was filed in U.S. District Court in San Diego.

She, her attorney — Mark Ankcorn of downtown San Diego — and 23andMe couldn’t be reached for comment Tuesday afternoon.

The case was filed Nov. 27, two days after the U.S. Food and Drug Administration ordered 23andMe to stop marketing its $99 direct-to-consumer DNA test kits and analysis service. The agency...