Why Pharmacyclics Shares Vaulted Higher

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Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of Pharmacyclics , a clinical-stage biopharmaceutical company researching therapies for cancer and immune-related treatments, soared 14% after the company and its licensing partner Johnson & Johnson announced that they had filed a new drug application for ibrutinib.

So what: Ibrutinib, which is targeted as a treatment for mantle cell lymphoma and chronic lymphocytic leukemia, received the new but rare breakthrough therapy designation from the Food and Drug Administration in April. Today's filing by Pharmacyclics and J&J is seeking an expedited review process, which would shorten a decision on their compound from 10 months to just six -- and given its breakthrough designation, I don't see that being much of a problem. Ibrutinib was particularly effective in treating mantle cell lymphoma, delivering a complete or partial response in 71% of treatment-naive patients in trials.

Now what: This is a big step for Pharmacyclics, as an approval could trigger a cascade of milestone payments from J&J that will sustain its research for years to come. In addition, it could go a long way to helping validate what I currently see as a ludicrous $7.3 billion market valuation for a wholly clinical company. Ibrutinib peak sales estimates do range as high as $5 billion, so ultimately Pharmacyclics' valuation may actually prove to be cheap. Then again, there's a lot riding on ibrutinib -- and everything from the FDA panel's thoughts, to the FDA's decision, all the way to marketing (assuming it gets approved) would have to go picture perfect if it hopes to maintain this valuation. As of now, I'm a perfectly happy sideline observer.

Craving more input? Start by adding Pharmacyclics to your free and personalized watchlist so you can keep up with the latest news on the company.

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The article Why Pharmacyclics Shares Vaulted Higher originally appeared on Fool.com.

Fool contributor Sean Williams has no material interest in any companies mentioned in this article. You can follow him on CAPS under the screen name TMFUltraLong, track every pick he makes under the screen name TrackUltraLong, and check him out on Twitter, where he goes by the handle @TMFUltraLong. The Motley Fool owns shares of, and recommends, Johnson & Johnson. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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