Yes, there is medical malpractice as to genomic information. The first real study on the topic is from ASU’s Gary Marchant (PhD in genetics and lawyer/law professor) and Rachel Lindor (physician/lawyer). A brief synopsis is provided in a December 5, 2018 post at an ASU law school blog, Bits Bots and Biomarkers.  The full paper is online and open access at this page of the Food and Drug Law Journal.