topiramate

Today the FDA announced that instead of reviewing Qnexa, the new weight loss drug by Vivus, combining Phentermine and Topiramate, they are pushing back the review date by 3 months to July 17th, 2012, to allow time to review all of the submitted data that Vivus provided the FDA.

“MOUNTAIN VIEW, Calif., April 9, 2012 (GLOBE NEWSWIRE) — The U.S. Food and Drug Administration (FDA) informed VIVUS  (Nasdaq:VVUS) of an extended Prescription Drug User Fee Act (PDUFA) date for its review of the Qnexa New Drug Application (NDA) from April 17 to July 17, 2012. The three-month extension is a standard extension period.

On April 4, 2012, following the FDA’s request, VIVUS submitted the Qnexa Risk Evaluation and Mitigation Strategy (REMS), which was considered a major amendment to the NDA. The submission consisted of proposed REMS materials. Since the receipt date was within three months of the user fee goal date, the FDA is extending the PDUFA date by three months to provide time for a full review of the submission.

“The Qnexa REMS submission is comprehensive, with materials based on ongoing feedback from the FDA since our advisory committee meeting in February,” stated Leland F. Wilson, chief executive officer of VIVUS. “We look forward to finalizing our REMS with the FDA while we move forward with our commercialization plans.”

The Qnexa NDA seeks approval for the treatment of obesity, including weight loss and maintenance of weight loss for obese patients (BMI ≥ 30 kg/m2), or overweight patients (BMI ≥ 27 kg/m2) with weight-related co-morbidities such as hypertension, type 2 diabetes or dyslipidemia. Obesity is the second leading cause of preventable death and directly contributes to numerous life-threatening conditions including diabetes, cardiovascular disease, hypertension and stroke.”

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On February 22nd, 2012, the Advisory Committee to the FDA met to review a new weight loss drug, Qnexa.  This drug is a combination of Phentermine and Topiramate, and the combination yields substantially better weight loss than Phentermine alone, even with lower doses of Phentermine.

In 2010, the same advisory committee voted against Qnexa, and shortly thereafter the FDA opted not to approve the drug.  They also voted against 2 other obesity drugs, and we saw another weight loss drug, Meridia withdrawn from the market too.

If the FDA approves Qnexa, it will be the new first drug approved for weight loss in 14 years.  Although it will not be an appropriate drug for women considering pregnancy or for those with heart disease or high risk of heart disease, it could offer very substantial weight loss for others.  Keep tuned in to our blog for more news regarding Qnexa, and also regarding the other weight loss drugs up for review between now and this Summer.

I am hopeful and excited that 2012 will mark a new era in medical management of obesity, with more modern, improved, effective and safe tools.  A drug like Qnexa can really help close the gap between medically-achievable weight loss results and surgical results.  Also, Qnexa was researched long-term (2 years).  This suggests that the idea of using medication short-term for obesity treatment will be put to rest, and we will manage it long-term with medication, similar to how we approach other chronic medical problems like diabetes or high blood pressure.  A new long-term treatment option would be a powerful tool in our armamentarium.

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FDA reconsiders weight loss drug Qnexa

December 7, 2011

The FDA is again considering approval of an experimental weight loss drug it rejected a year ago over concerns about potential heart problems and birth defects in babies born to women who take the drug.   California-based pharmaceutical company Vivus Inc, is now asking for limited approval for its oral combination drug Qnexa, which would exclude women in their childbearing years. [...]

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