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!

Drug-Exposure Limitations Of Oral Methotrexate At Doses Greater Than Or Equal To 15 Mg May Be Overcome With Subcutaneous Administration

Antares Pharma, Inc. (NASDAQ: ATRS) today announced that the Annals of the Rheumatic Diseases has published results from an open-label, head-to-head randomized, crossover study comparing the relative bioavailability, safety and tolerability of OTREXUP to oral methotrexate (MTX) in adult patients with rheumatoid arthritis (RA).

In this multicenter, three-way crossover study, patients greater than or equal to 18 years old with adult RA undergoing treatment with MTX for three months or more were assigned to receive one of four dose levels of OTREXUP, 10 mg, 15 mg, 20 mg, and 25 mg weekly in a random sequence of three treatments: oral, subcutaneous into the abdomen and subcutaneous into the thigh. For 24 hours after the administration of each treatment, blood samples were collected to measure drug levels and injection sites were assessed. Forty-seven patients completed the study and the results showed that the systemic availability of methotrexate following oral dosing plateaus at 15 mg and greater. Following administration of OTREXUP, the systemic availability increased proportionally at every dose, which extended the range of exposure compared to patients receiving oral therapy. No unexpected adverse events were noted for either formulation in this short term study and higher systemic MTX exposure was not associated with increases in adverse events.

“The study results show for the first time that plasma levels of oral dosed MTX are no greater for 20 mg or 25 mg doses than for 15 mg doses,” said Michael H. Schiff, M.D., Clinical Professor of Medicine in the Rheumatology Division at the University of Colorado School Of Medicine in Denver. “If a patient fails to respond to 15 mg of MTX orally, it may be more effective to switch to a subcutaneous regimen rather than continue to raise the oral dose. These findings may have implications on future prescribing habits of specialists.”

1 of 4

Select the service that is right for you!

COMPARE ALL SERVICES
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 17,001.22 -38.27 -0.22%
S&P 500 1,988.40 -3.97 -0.20%
NASDAQ 4,538.5510 +6.4470 0.14%

Brokerage Partners

Rates from Bankrate.com

  • 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