For the RECORD, Avandia does not cause heart attacks.
Posted Jun 05 2009 10:04pm
Those people who know me would probably agree that I am not one to say "I told you so," but in this case I will make and exception.
The RECORD study, as I described the other day, was just presented and the results are GOOD. Dr. Home, the lead author of the study (from Med Page Today ), stated, "in terms of overall cardiovascular risk, the drug is safe. There's no increased risk, no decreased risk. And that includes the heart failure element."
I told you in one of my first posts that the Nissen article was likely a lot of media hype.
I told you all about the flaws of the Nissen study and how politically motivated the entire Avandia scare really was, outlined in my post Diabetes Conspiracy
I told you before the results were presented in my post Get Ready for RECORD the likely outcomes of the study, which I also warned that the naysayers would be out in full force (more below)
Here's the actual results which can be found in The Lancet - For the primary outcome of combined cardiovascular hospitalization and cardiovascular death- they were exactly the same -for cardiovascular death alone, no difference (avandia slightly favored) -for heart attack - no difference - for stroke no difference (avandia slightly favored) -diabetes was also better controlled in the avandia group (though we don't know by how much...yet. -the only bad thing was that heart failure causing admission to hospital or death occurred in 61 people in the rosiglitazone group and 29 in the control group. However, this is not unexpected, since heart failure is a known risk for the drug. In fact, it is comforting to know that even with a double risk of heart failure, there was no overall increase in risk of hospitalization or death from cardiovascular causes in the study- which was the whole point of the study to begin with.
As mentioned, it should not be surprised that certain people are going to try to raise doubts about the study. Dr. Steve Nissen, whose meta-analysis is essentially completed refuted by the study claims that it is still unresolved is whether rosiglitazone is associated with an increased risk of myocardial infarction stating, "In The Lancet manuscript, the authors don't reveal the number of patients who were still taking Avandia by the end of the study. Obviously, it is impossible to assess the safety of a drug when patients are not actually taking it."
Guess what Dr. Nissen? At the end of the study, 1,344 patients 61% of the Avandia group were still on the drug, while 1,131 patients, or 51% of the control group, remained on their medicines (from Forbes ). In other words, there was high and similar drop out in both groups. It is actually surprising that even more patients didn't drop out, given your study unnecessarily scared the socks of these folks!
Dr. David Nathan is another likely naysayer, given that his newest guidelines recommend that Avandia shouldn't be used.
From MedPageToday: Although the data released today showed no associated risk of overall cardiovascular morbidity or mortality, Dr. Nathan noted that the study still doesn't put to rest the concerns about the drug This should not come as a surprise from someone who believes we need no more new diabetes medicines.
If you are still skeptical, I encourage you to read all my diabetes posts, particular the Diabetes Conspiracy, as it outlines how flawed and political the whole controversy is.
In addition, please consider that gold standard of science is not a meta-analysis, but large, randomized controlled trials designed to answer a specific question like RECORD. Given RECORD, ACCORD, ADOPT, DREAM and VADT there have been randomized, controlled trials of 26,000 patients that have been studied over 4 to 5 years, of which more than 15,000 patients took Avandia and showed absolutely no difference in heart attacks .