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 biopharmaceutical company Halozyme Therapeutics , which engages in human enzyme research, soared as much as 20% after announcing a positive opinion from a European panel over its primary and secondary immunodeficiency drug, HyQvia.

So what: HyQvia, which was developed by Halozyme and Baxter International , received a positive opinion from the European Medicine Agency's Committee for Medicinal Products for Human Use (essentially the equivalent of the FDA panel for Europe) as a replacement therapy for adults with primary of secondary immunodeficiencies. HyQvia works as a subcutaneous injection that's given every three to four weeks and could help lower the number of adverse events often associated with more frequent intravenous injections. In trials, HqQvia resulted in an acute serious bacterial infection rate of just 0.025, which is well below the required efficacy threshold of 1.0.


Now what: Just like with the FDA at home, the EMA is not required to follow the opinion of its panel. However, I feel this is a pretty resounding endorsement given its success in clinical trials and the comfort improvement that it could bring patients in terms of a subcutaneous injection compared to intravenous injection. We may have already seen most of the pop should HyQvia be approved in Europe, but with Baxter on its side, I could see HyQvia selling well. This will definitely be a name worth keeping an eye on.

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

While you can certainly make huge gains in biotechs like Halozyme, the best investing approach is to choose great companies and stick with them for the long term. The Motley Fool's free report "3 Stocks That Will Help You Retire Rich" names stocks that could help you build long-term wealth and retire well, along with some winning wealth-building strategies that every investor should be aware of. Click here now to keep reading.

The article Why Halozyme Therapeutics Shares Skyrocketed 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. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.

Copyright © 1995 - 2013 The Motley Fool, LLC. All rights reserved. The Motley Fool has a disclosure policy.


Increase your money and finance knowledge from home

Introduction to ETFs

The basics of Exchange Traded Funds and why ETFs are hot.

View Course »

Investing in Startups

The lucrative and risky world of startups.

View Course »

Add a Comment

*0 / 3000 Character Maximum