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Kidney Cancer? There's a Drug for That

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The way to make money in biotech is to find companies going after unmet needs. The bar is lower for an approval and sales are easier without any competition.

The corollary, then, is that the way to not make money is to invest in crowded markets. But that's only partially true.

Get 'em coming and going
The kidney cancer market is becoming increasingly crowded. Pfizer (NYSE: PFE  ) just gained Food and Drug Administration approval of Inlyta last week, bringing the total drugs approved for the indication up to seven. Three of those -- Sutent, Torisel, and Inlyta -- are marketed by Pfizer, but it's not like the company is cannibalizing sales of its own drugs too much.

Sutent is used first and has been tromping Bayer and Onyx Pharmaceuticals' (Nasdaq: ONXX  ) Nexavar because it appears to work better, despite the similar mode of action. Roche's Avastin and GlaxoSmithKline's (NYSE: GSK  ) Votrient also attack the same vascular endothelial growth factor, or VEGF, pathway.

Further downstream in the cascade that triggers growth of a tumor is a protein called mTOR. Both Novartis' (NYSE: NVS  ) Afinitor and Pfizer's Torisel attack mTOR. Afinitor is approved after the use of Sutent or Nexavar, but Torisel can be used as a first-line treatment.

Inlyta works more like Sutent, Nexavar, Avastin and Votrient on the VEGF pathway, but it appears to work even after patients fail one of those treatments. So it'll compete with Afinitor as a second-line treatment, even though it works through a different mechanism.

Good, better, best
While these drugs can prolong survival, technically there's still an unmet need in kidney cancer since none of them is actually a cure for the disease. A drug that can beat Sutent could be an instant blockbuster.

Even a drug that works kind of well, but has a low side-effect profile and therefore could be combined with other already-approved drugs, could get on the market and capture sales quickly.

Unfortunately, AVEO Pharmaceuticals (Nasdaq: AVEO  ) didn't go either of those routes. Instead the company compared its kidney cancer drug tivozanib against Nexavar, which is arguably not the top dog in the kidney cancer space.

Tivozanib beat Nexavar handily, even with Nexavar working better than expected, but it's nearly impossible to compare the data from that trial to data from Sutent's trial. Since the two drug trials used different standards, it's impossible to know if they even enrolled approximately similar patients.

The trial will be enough to get tivozanib on the market -- it beat an approved drug, after all -- but whether it'll be enough to take sales from Sutent remains to be seen. Going up against an established drug without head-to-head data will be difficult, although AVEO does have the backing of partner Astellas Pharma, which has plenty of experience in the oncology field.

"Crowded" is a relative term
The kidney cancer is certainly crowded, but it's a better choice for an investment than something like psychiatric drugs where patients are helped fairly well by existing players. Developing a depression drug that works better than anything on the market still wouldn't result in very high sales, because there are a ton of generic drugs that work well enough to convince doctors to try them first. Only patients that fail the other drugs would be candidates for the new medication.

For kidney cancer, drugs can go after the top spot and be rewarded since increased life expectancy is a pretty strong motivator for taking a drug. And as a backup plan, the drug can join the rank and file, being used as a second-line treatment.

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Fool contributor Brian Orelli holds no position in any company mentioned. Click here to see his holdings and a short bio. Motley Fool newsletter services have recommended buying shares of GlaxoSmithKline, Pfizer, and Novartis. 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.

Read/Post Comments (1) | Recommend This Article (2)

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Help us keep this a respectfully Foolish area! This is a place for our readers to discuss, debate, and learn more about the Foolish investing topic you read about above. Help us keep it clean and safe. If you believe a comment is abusive or otherwise violates our Fool's Rules, please report it via the Report this Comment Report this Comment icon found on every comment.

  • Report this Comment On February 01, 2012, at 3:02 PM, biotechbro wrote:

    Mr. Orelli, this is a very naive and poorly researched article referencing AVEO. Here are some additional details that you left out. Sutent has assumed the market lead with Pfizer comparing it to cytokine-based therapy. Sutent has become the market leader w/o being studied in a phase 3 study against an anti-VEGF therapy. AVEO was the first and only drug to be studied in the first line setting against an anti-VEGF therapy (Nexavar). Your comment that "Unfortunately, AVEO didn't go either of these routes" is an outright lie. This statement misinforms your readers since the safety profile of tivozanib is actually much better than any approved therapy, including Sutent, based on their phase 2 results. Their phase 3 safety information is being withheld due to ASCO guidelines. Your article is either poorly researched (you relied on the opinions of others) or dare I say motivated by a short position. Readers do your own due diligence.

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