Bristol-Myers Squibb (NYSE: BMY) is no longer offering its $37-a-month Plavix® Co-Pay Discount Card. And some patients are not happy about this. Additionally, according to the company’s web site for “Patient Assistance Programs,” the company is no longer making this life-saving drug available to patients who cannot afford it. This, of course, has something to do with the fact that brand-name Plavix has gone off patent and generic versions have been available since May 2012. (See our Patient Alert: How to Get the Best Price on New Generic Plavix.) But are the generic versions of clopidogrel really the same? Continue reading
Category Archives: Drug-Eluting Stents
I added a new category “tag” to the stent blog today: “Back to the Future.” And I hereby declare this to be an internet meme, even if it’s only a meme on this site!
I added this category because every TCT or ACC or AHA or ISET or ESC or EuroPCR meeting that I cover, I am struck by the fact that the newest, latest, greatest innovations are all ideas that were present at the genesis of this field of interventional cardiology. Continue reading
Today the editors of the HEART Group Journals, comprising the Journal of the American College of Cardiology and other participating cardiovascular publications, issued a “Statement on Matching Language to the Type of Evidence Used in Describing Outcomes Data.”
Although the title of the article may be a bit yawn-inducing, the editors deserve a kudo or two for attempting to clarify reporting on medical issues. Continue reading
According to reports yesterday by the Mumbai Bureau of Pharmabiz, and confirmed today by MassDevice, Medtronic has launched its Resolute Integrity Drug-Eluting Stent (DES) in India for the treatment of coronary artery disease (CAD). The Resolute Integrity is the only stent approved by the FDA for use in diabetics, based on a large cohort of diabetic patients in the Resolute clinical program.
Diabetics historically have had higher adverse events when treated with PCI (angioplasty and stents) — but the data from the Resolute trials showed virtually no difference between diabetics and non-diabetics, leading the FDA to approve the indication. Continue reading
Monday’s 172-page Senate Finance Committee Staff Report on the overuse of coronary stents by Dr. Mark Midei at St. Joseph’s Hospital in Maryland has been all over the news — over 300 articles to date, claiming fraud, malpractice, pig roasts, threats to reporters — all of which serve to rekindle the “anti-stent” sentiment that followed on the heels of the COURAGE study back in 2007. In fact, Dr. William Boden, principal investigator for COURAGE, was interviewed for the Senate report, which characterized him as follows: Continue reading
I recently interviewed Dr. Eric Topol for Angioplasty.Org about current efforts to determine the optimal duration of dual antiplatelet therapy (a.k.a. DAPT or clopidogrel plus aspirin) after drug-eluting stent placement. My first question was what had we learned about this issue since the 2006 FDA stent safety hearings? And his answer was “Unfortunately, we don’t know anything more…“.
Sort of shocking. A major study was supposed to come out of those hearings, but the DAPT study just began recruiting last summer and won’t be completed for four years. This massive study, sponsored by all the major stent makers, as well as the manufacturers of antiplatelet meds, will enroll 20,000 patients and test them at 12 and 30 months to determine the rates of MACCE (death, heart attack and stroke) stent thrombosis and major bleeding complications. It will be performed with all drug-eluting stent brands and will not compare one to another. What will this teach us? Dr. Topol has an opinion about the DAPT study:
“The notion that we should treat all patients for X duration is totally crazy. It completely goes against all the evidence that every patient is an individual with a separate biologic story, and a risk of bleeding. And then there is obviously a big expense. The drug companies would love it to be 30 months or 30 years. But to try to generalize from a trial like that, I’m amazed that it’s going forward.”
Dr. Topol (who, by the way, was an invited panel member at those 2006 FDA hearings) is currently Director of the Scripps Translational Science Institute (STSI) where he is conducting research on the genomics of coronary artery disease. The bottom line is that all patients are not the same — and they respond to antiplatelet therapy differently. So Dr. Topol believes that the “one-size-fits-all” concept of thrombosis prevention just doesn’t apply.
Another concept is that all drug-eluting stents aren’t the same. Because of the metal structure, polymer coating or drug itself, each device has different characteristics and different healing properties. This was seen clearly in the ODESSA trial, where Dr. Giulio Guagliumi used OCT intravascular imaging to measure stent coverage at six months. He found significant incomplete coverage in the CYPHER and TAXUS stents, but complete healing in the ENDEAVOR.
As a result of these findings and other clinical data, two trials, involving only Medtronic’s ENDEAVOR stent, are currently starting up: SEASIDE, which Dr. Topol is involved in, will measure the outcomes of patients who receive and only get six months of DAPT; and OPTIMIZE, being conducted in Brazil by Dr. Fausto Feres, which is stopping DAPT at three months.
Rather than testing if DAPT is more effective at longer durations, such as 12 and 30 months, these studies are testing to see if it is just as effective at shorter periods, when used with a DES that has a greater healing profile, like the ENDEAVOR. The advantages of a shorter DAPT duration are several:
- less risk of bleeding complications (inherent in the use of antiplatelet drugs);
- less cost (Plavix costs $4/day — the difference of a year or two is significant — newer antiplatelet drugs like prasugrel cost even more);
- less problems deferring surgery (in order to perform surgery of any sort, for example knee replacement, etc., antiplatelet therapy must be stopped).
The short back story here is that when drug-eluting stents first came on the market in 2003-2004, the FDA recommended six months of DAPT to keep the blood from clotting in and around the stent (a.k.a. stent thrombosis). Within a couple of years, reports surfaced about a small number of patients who suffered late stent thrombosis (six months or more after stenting). A flurry of concern arose and the 2006 FDA stent safety hearings resulted in recommendations to extend DAPT to 12 months or more — the current guidelines. But, as Dr. David Kandzari, co-principal investigator for the SEASIDE trial told Angioplasty.Org:
“Current treatment guidelines are based principally on consensus opinion and intuition rather than hard evidence that extending DAPT reduces the risk of late and very late ST. In fact, in more recent trials, patients experiencing very late ST are more commonly on DAPT than off.”
Dr. Kandzari explores this issue in detail in his Viewpoint article in December’s JACC: Interventions, “Identifying the ‘Optimal’ Duration of Dual Antiplatelet Therapy After Drug-Eluting Stent Revascularization”