Merck & Co., Inc. (MRK)’s Late-Stage Breakdown

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Merck & Co., Inc. (NYSE:MRK)The Food and Drug Administration cancelled an advisory meeting planned for Merck & Co., Inc. (NYSE:MRK)’s post-surgery drug sugammadex. It’s another blow to Merck & Co., Inc. (NYSE:MRK) as investors pay close attention to the beleaguered R&D department now turned over to Roger Perlmutter.

Merck highlighted its top five late-stage projects during the full-year 2011 conference call last February: sugammadex, insomnia treatment suvorexant, HPV vaccine V503, osteoporosis drug odanacatib, and cholesterol drug Tredaptive. All of these drugs have since encountered major problems, and investors are nervous.

Merck & Co., Inc. (NYSE:MRK) has spent $8 billion a year for research and development, but currently has little to show for it. Can the newly returned Perlmutter rescue Merck’s R&D?

Sugammadex hits a bump

Sugammadex is meant to reverse the after-effects of muscle relaxants administered during surgery. If approved, sugammadex would become a first-in-class selective relaxant binding agent, or SRBA. But the drug has had Food and Drug Administration issues since its first new drug application was filed in 2008.

While an early advisory panel had recommended the drug, the FDA issued a “not-approvable” action letter due to allergic reaction concerns. The resubmitted NDA was accepted earlier this year before the panel was cancelled this week. A panel cancellation doesn’t immediately equal the failure of the drug.

But the cancellation serves as one last potential setback for the top five drugs that Merck & Co., Inc. (NYSE:MRK) touted as its late-stage future. Let’s look at what happened to the other four.

Faltering four

The highly anticipated insomnia drug suvorexant recently received a complete response letter centered around dosing. The FDA found that Merck & Co., Inc. (NYSE:MRK)’s suggested 30 to 40 mg dosage was not supported by enough safety data to warrant approval. A low dose of 10 mg was recommended for most patients, but 5 mg was recommended for those taking certain medications that could cause a drug interaction.

Merck said that additional safety or efficacy trials aren’t needed for the 10 mg dose but will require a manufacturing study. The FDA could require additional trials for the 5 mg dosage. Merck’s currently in talks with the FDA to determine the next step for suvorexant.

HPV vaccine V503 hasn’t hit a regulatory roadblock, but it could prove unnecessary. V503 is meant to back up Merck’s market-dominating Gardasil vaccine while offering protection from an additional six genotypes of the disease. But there’s reason to believe that those extra genotypes don’t need to be covered, which would make V503 redundant at best.

Merck & Co., Inc. (NYSE:MRK) announced in the fourth quarter 2012 report that osteoporosis drug odanacatib required some additional safety and efficacy trial from an extension study. That meant pushing back the regulatory filing from the first half of this year to some time in 2014. Merck remained mum on exactly why it was necessary to gather more information.

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