After 10 years of genomic studies, our understanding of the genetic architecture of diabetes is… still a mess. Or, if you prefer, a nightmare. That’s the message of the most extensive Type 2 Diabetes GWAS to date. Looking for rare genetic variants linked with diabetes, researchers performed whole-genome or exome sequencing on 15,000 people… and came up with nothing new.
This is an important negative result, in that it advances our knowledge of the genetic architecture of diabetes – odds are that many common genetic variants, each with individual small effects, contribute to one’s total genetic risk for the disease. It also illustrates just how hard it will be to realize the goals of personalized medicine. So let’s avoid the hype when we talk about how genomics is going to revolutionize medicine.
I explain the study and its implications in my piece this week at Pacific Standard. Go read it to learn more about the challenges ahead that face personalized medicine.