This Day On The Street
Continue to site right-arrow
This account is pending registration confirmation. Please click on the link within the confirmation email previously sent you to complete registration.
Need a new registration confirmation email? Click here
Stocks Under $10 with 50-100% upside potential - 14 days FREE!

VX-787 Showed Significant Antiviral Activity And Reduced The Severity And Duration Of Influenza Symptoms In Phase 2 Challenge Study

Stocks in this article: VRTX

Vertex Pharmaceuticals Incorporated (Nasdaq: VRTX) today announced that treatment with VX-787 in a Phase 2 influenza challenge study resulted in statistically significant improvements in viral and clinical measurements of infection. VX-787 is an investigational new class of medicine for the treatment of influenza and is designed to directly inhibit replication of the virus. The study met its primary endpoint, and showed a statistically significant decrease in the amount of virus in nasal secretions (viral shedding) over the seven-day study period. In addition, at the highest dosing regimen evaluated in the study, there was a statistically significant reduction in the severity and duration of influenza-like symptoms. People in this dose group experienced influenza-like symptoms for a median of 1.9 days, compared to 3.7 days in the placebo group. In addition, 93 percent of people in this dose group showed no clinical symptoms of influenza after three days of treatment, compared to 41 percent of people in the placebo group. In this study, VX-787 was generally well-tolerated, with no adverse events leading to discontinuation. Based on these data, Vertex will explore collaborative opportunities to support further development of VX-787.

“There is an urgent need for new medicines targeting influenza that work more quickly, address resistant and pandemic strains, and are effective when taken more than two days after symptoms appear,” said Chris Wright, M.D., Ph.D., Vertex's Senior Vice President, Global Medicines Development and Medical Affairs. “Further development of VX-787 may offer an opportunity to address these needs. The data from this proof-of-concept study validate VX-787’s new mechanism of action, and underscore its potential to significantly reduce the severity and duration of influenza.”

About the Phase 2a Study

This double-blind, randomized, placebo-controlled Phase 2a study of VX-787 enrolled and dosed 104 healthy people (72 in the VX-787 arms; 32 in the placebo arm) ages 18 to 45 who volunteered to be experimentally exposed to an attenuated form of live H3N2 influenza A virus. H3N2 is a common type of influenza virus, and was the most common type observed in the 2012/2013 influenza season in the United States. The study evaluated four dosing regimens of VX-787 given once-daily (QD) for five days beginning 24 hours after infection with flu virus. This was followed by an additional two days of observation. The study was conducted in a controlled quarantine facility with participants under close observation.

1 of 5

Select the service that is right for you!

Action Alerts PLUS
Try it NOW

Jim Cramer and Stephanie Link actively manage a real portfolio and reveal their money management tactics while giving advanced notice before every trade.

Product Features:
  • $2.5+ million portfolio
  • Large-cap and dividend focus
  • Intraday trade alerts from Cramer
  • Weekly roundups
TheStreet Quant Ratings
Try it NOW
Only $49.95/yr

Access the tool that DOMINATES the Russell 2000 and the S&P 500.

Product Features:
  • Buy, hold, or sell recommendations for over 4,300 stocks
  • Unlimited research reports on your favorite stocks
  • A custom stock screener
  • Upgrade/downgrade alerts
Stocks Under $10
Try it NOW

David Peltier, uncovers low dollar stocks with extraordinary upside potential that are flying under Wall Street's radar.

Product Features:
  • Model portfolio
  • Stocks trading below $10
  • Intraday trade alerts
  • Weekly roundups
Dividend Stock Advisor
Try it NOW

Jim Cramer's protege, David Peltier, identifies the best of breed dividend stocks that will pay a reliable AND significant income stream.

Product Features:
  • Diversified model portfolio of dividend stocks
  • Alerts when market news affect the portfolio
  • Bi-weekly updates with exact steps to take - BUY, HOLD, SELL
Real Money Pro
Try it NOW

All of Real Money, plus 15 more of Wall Street's sharpest minds delivering actionable trading ideas, a comprehensive look at the market, and fundamental and technical analysis.

Product Features:
  • Real Money + Doug Kass Plus 15 more Wall Street Pros
  • Intraday commentary & news
  • Ultra-actionable trading ideas
Options Profits
Try it NOW

Our options trading pros provide daily market commentary and over 100 monthly option trading ideas and strategies to help you become a well-seasoned trader.

Product Features:
  • 100+ monthly options trading ideas
  • Actionable options commentary & news
  • Real-time trading community
  • Options TV
To begin commenting right away, you can log in below using your Disqus, Facebook, Twitter, OpenID or Yahoo login credentials. Alternatively, you can post a comment as a "guest" just by entering an email address. Your use of the commenting tool is subject to multiple terms of service/use and privacy policies - see here for more details.
Submit an article to us!


DOW 18,053.71 +23.50 0.13%
S&P 500 2,088.77 +6.89 0.33%
NASDAQ 4,806.8590 +33.3870 0.70%

Brokerage Partners

Rates from

  • Mortgage
  • Credit Cards
  • Auto

Free Newsletters from TheStreet

My Subscriptions:

After the Bell

Before the Bell

Booyah! Newsletter

Midday Bell

TheStreet Top 10 Stories

Winners & Losers

Register for Newsletters
Top Rated Stocks Top Rated Funds Top Rated ETFs