break-through that doctors are looking for to help prevent heart attacks. this is big and it's actually in the form of a gene mutation, two new studies show that people who have dramatically lower levels of triglycerides, a fat that circulates in the bloodstream, those people were found 40% less likely to have heart disease. if doctors can mimic that with a drug they can cut the people suffering significantly. joining me is cardiology professor dr. dan roden to talk about this. i found this story and her whole team did absolutely fascinating when we read it this morning. talk to me about how big this is. these are two independent studies that basically verified a smaller study from 2008. >> right, the smaller study was a little genetic study in the amish in pennsylvania, and it had the provocative result that people who had this variation in the gene had much lower triglis