Repligen Seeks Approval for Imaging Product While Pursuing Rare-Disease Drugs and Manufacturing Platform

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the purification of protein-based products they are making. The first version of Opus can only be used for small jobs, however, so Repligen is working furiously to adapt the technology for larger manufacturing challenges. The company plans to launch the second generation of Opus in about six months, Herlihy says.

Repligen is still trying to make a mark as a drug developer, as well. But its recent efforts have been disappointing. In March, investors pounded Repligen’s stock down from nearly $5 a share to $3.50 on negative Phase 2 trial results of a drug it was developing to treat bipolar disorder. A positive pivotal trial of the company’s imaging product was released around the same time, but many investors were still disappointed, Herlihy acknowledges. “If we had a safe and effective treatment for bipolar depression, that would be a blockbuster,” he says. Investors who were counting on that drug, he adds, “exited the stock at that time.” (The stock is now at $3.35.)

But Repligen is undeterred. The company has developed two drug candidates to treat spinal muscular atrophy and Friedreich’s ataxia—both rare diseases of the central nervous system. Herlihy estimates that even with modest pricing, they could each bring in revenues of $500 million. But Repligen doesn’t have the resources to complete clinical-trial programs for both of them, so the company is actively looking for Big Pharma partners that might want to strike licensing deals with Repligen. “There’s a lot of interest in orphan drugs, so we think we’re well positioned to find a partner,” he says.

Repligen’s history is one marked by re-invention. The company was founded in 1981 as a maker of industrial enzymes. But as the biotech industry began to take off, Herlihy says, “investors had a lot less enthusiasm for low-margin enzymes than they did for finding cures for cancer.” So Repligen began pulling out of the industrial market and looking for ways to get in on all the action in drug development. Herlihy—who has a PhD in chemistry from MIT—joined the company as CEO in 1996, when Repligen merged with Glycan Pharmaceuticals, which Herlihy co-founded. Glycan was working on drugs to treat inflammatory diseases.

Repligen has $62 million in cash and no debt, and Herlihy has a goal of turning the company profitable in fiscal 2012.

To get there, Herlihy has set some tall orders for Repligen to reach over the next six months: filing for FDA approval for the imaging product, launching the improved Opus, and finding at least one partner for Repligen’s rare-disease drugs. He doesn’t understate the challenge. “To be successful,” he says, “those are the three things we have to get done.”

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