Posts Tagged ‘FDA’

Senate Pushes FDA toward Approvable Drugs

September 18th, 2011

The Senate Appropriations Committee has passed its Report accompanying the appropriations   bill for the Department of Agriculture and Related Agencies, which includes the Food and Drug Administration. The Report includes the following language, “Obesity Therapeutics- The Committee is concerned with the absence of novel medicines to treat obesity, the second leading cause of preventable deaths in the United States and a disease linked to cancer, high blood pressure, heart disease, diabetes, and stroke. With only diet, exercise, and gastric surgery as options, the lack of obesity medications is a significant unmet medical need. The Committee directs FDA to report by March 30, 2012 on the steps it will take to support the development of new treatments for obesity, including the use of its Risk Evaluation and Mitigation Strategy and other post-marketing authorities, to mitigate risk and ensure rigorous post-market scrutiny while increasing access to novel medications. “ No doubt this will continue to put pressure to have FDA act more positively to find ways to find approvable drugs.

Qnexa’s Second Chance

September 15th, 2011

Vivus Inc. has indicated that the FDA will accept a resubmission of the application and hold a second Advisory Committee on Qnexa in early 2012. Early indications are the revisions would indicate a label for men and women of non-childbearing age.VIVUS, Inc. – VIVUS Provides Regulatory Update on QNEXA

What’s Up with the FDA – Part 5

September 6th, 2011

My colleagues, Christopher Still of the Geisinger Obesity Institute, and Arya Sharma, of the University of Alberta and I , have just published an article, Is there a path for approval of an anti-obesity drug at the FDA. The article analyzes in some depth the reviews by the FDA of the 3 new drug applications and the review of the approved drug, sibutramine. All the new applications were turned down and sibutramine was withdrawn after a split vote by the advisory committee. The article describes the conceptual quagmire the FDA is in regarding drugs to treat obesity. Rather than depend on the results of studies, conclusions reached by FDA are often based on assumptions and fears.

We conclude that obesity is simply too important to go without drug therapy and recommends that FDA, NIH, industry and researchers must work together to design a methodology to gain approval for obesity pharmacotherapy in the future.

Is there a path for appro… [Curr Opin Endocrinol Diabetes Obes. 2011] – PubMed – NCBI

Contrave bites the dust

June 3rd, 2011

After negotiating with the FDA over whether a cardiovascular trial had to be done pre or post approval, the FDA held out and Orexigen folded.  Orexigen Therapeutics, Inc. – Press Release Evidently, the FDA wanted a trial of between 60.00 and 100,000 patients. Orexigen propsed a trial of between 12,000 and 15,000 patients. The FDA said no, of course. Orexigen Says FDA’s Requests for Contrave Trial Aren’t ‘Necessary or Feasible’ – Health Blog – WSJ

 As indicated elsewhere (scroll down to September 10,2010), the FDA is in a bind. An obesity drug of moderate efficacy, they feel, is not worth any risk. While a drug with significant weight loss (read Qnexa) they fear will be used by so many people (since obesity is an epidemic, after all) that unforeseen adverse events will arise and they will have to take the drug off the market. Then there is the head of the FDA Drug Evaluation Center who wants to make drugs for weight loss into drugs for cholesterol or hypertension.( See What’s Up with the FDA, Part 2)  Make no mistake, the FDA bureaucracy is more afraid of the embarrassment of withdrawing a drug from the market (see the Avandia discussions) than they are of the mortality and morbidity of obesity.

Interestingly, (ominiously??) , the Orexigen release indicates that the FDA will hold an advisory committee early next year on the cardiovascular aspects of obesity therapeutics. This could be the final nail in the coffin of obesity therapeutics.

What’s Up with the FDA? – Part 2

May 15th, 2011

I’m sorry are we bothering you with all this obesity stuff?

As you know the FDA was quite busy this last 12 months or so with reviews of Meridia, Qnexa, lorcaserin and Contrave. Meridia is off the market now while the other three are holding on for dear life. It came as no shock to those closely watching the meetings of the Endocrinologic and Metabolic  Advisory Committee that the FDA really doesn’t much like dealing with obesity. Now, we know why. They are not curing hypertension or diabetes. That’s what the head of the FDA drug center, Janet Woodcock, right,  wanted to see. And that’s what she told Reuters in this interview. FDA official sees drug approvals rising | Reuters

So, think about this for a moment, the top FDA drug official casually tosses off the FDA’s own guidances for developers of obesity drugs regarding efficacy and says, well, she wishes they were other drugs entirely. Imagine if she said, well, we have turned down this drug for breast cancer because it didn’t  improve Alzheimer’s disease or  cure multiple sclerosis. Or if she said of a drug rejected  for HIV/AIDs, that she would like to have seen it cure Parkinson’s disease?  Would she stay in office the rest of the day? Would it not be a huge embarrassment to the FDA, the HHS, the medical community, the Administration? Why is it  ok for obesity? Is is any less intellectually vapid?  Is that why one of people who works for her, running the Endocrinologic and Metabolic Advisory Committee process this year, apologized, APOLOGIZED! to the panel for “putting them through this unpleasantness.” The “unpleasantness” Dr. Coleman was referring to was the Committee’s job, namely, reviewing new drug applications for obesity. Dr. Coleman, went on to add, “I guess you should be thankful you don’t have to do this everyday for your living.” (See http://www.fda.gov/downloads/AdvisoryCommittees/CommitteesMeetingMaterials/Drugs/EndocrinologicandMetabolicDrugsAdvisoryCommittee/UCM232443.pdf at page  304) Is this a cry for an intervention, a plea for a new job? Or a sign of an institution so biased against all this obesity that no obesity drug will ever be approved no way, no how? Can these people give obesity drugs a fair hearing? The FDA has rules on Conflicts of Interest. How about rules on Lack of Interest?

What’s Up with the FDA? Part 1

May 6th, 2011

Faithful readers will recall that I spent two days last July at the FDA Endocrinologic and Metabolic Advisory Committee reviewing rosiglitizone (Trade name Avandia). Avandia, for type 2 diabetes has been interesting to follow not just because so many persons with obesity develop type 2 diabetes but because, due to its review coming amid the same Advisory Committee’s review of four obesity drugs, provided additional insights, especially into how the FDA evaluated safety concerns.

This became all the more interesting when the FDA decided to keep Avandia on the market, albeit with endhanced warning, but had Abbott Laboratories take sibutramine (trade name Meridia) off the market.  The point was made that Avandia had a number of fatal events, in its intended population while Meridia had no fatal events in a population which was specifically excluded on its label. Yet Meridia was spiked and Avandia was not.

Now comes a meta-analysis of Avandia’s class of drugs, called thiazolidinediones, which also includes pioglitazone, (Trade name Actos). The study, covering 16 studies with 810,000 patients found 170 excess myocardial infactions, 649 excess cases of heart failure and 431 excess deaths for every 100,000 patients who receive Avandia rather than Actos. Probably, this will not be enough for the FDA to take any stronger action against Avandia. See Comparative cardiovascular effects of thiazolidine… [BMJ. 2011] – PubMed result

Time to Replace the BMI

May 6th, 2011

Elsewhere we have described the serious limitations of the Body Mass Index (BMI). Intended and still useful as a population measure of obesity, it has over recent years been used  (and I would say mis-used by the Food and Drug Administration)  for clinical decision-making. (Walter Poires has also called for a new standard for bariatric surgery Beyond the BMI: the search for better guidelines f… [Obesity (Silver Spring). 2010] – PubMed result  Now Rich Bergman and colleagues have proposed a alternative which does not require weighing at all but takes measurements of hip circumference and height. Interestingly (and unique for the obesity field) the measure has been validated in non-white populations but not yet in Caucasians. See A better index of body adiposity. [Obesity (Silver Spring). 2011] – PubMed result. Whether or not this particular measure, called the Body Adiposity Index (BAI), is the last word or not, it is time for the research community to find a better tool to identify excess adiposity. This tool, which can be used in remote parts of the world where only a tape measure is needed is a big step in the right direction.

FDA Panel Approves Obesity Drug

December 8th, 2010

In a surprise vote, the FDA Advisory Committee voted to approve Orexigen Therapeutics obesity drug, Contrave. The vote was 13 to 7. This is the first obesity drug to win approval since 1999. The FDA will make the final decision but they usually follow the recommendations of their advisory committees. This opens the door for Vivus to obtain approval since their drug, Qnexa, had a superior efficacy finding. It probably also helps Arena’s lorcaserin to obtain a more favorable decision by the FDA. See F.D.A. Panel Backs New Diet Pill – NYTimes.com