Zannis, first discovered 17 years ago that there were three versions of apo E, they found that most people afflicted with a rare type of artery-clogging atherosclerosis had two copies of apo E-2.
But in January results from an artery-imaging study showed that adding Zetia to Zocor didn't slow heart-attack-causing atherosclerosis in patients with a genetic disorder that causes high cholesterol.