This Day On The Street
Continue to site
ADVERTISEMENT
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

MannKind's Mysterious Lung-Safety Study Is Open But Shhh...Don't Talk About It

A 19% difference in the discontinuation rate for Afrezza compared to usual care is not the sign of a therapy that is well liked or tolerated by diabetic patients. Adverse events related to Afrezza caused the sharply higher discontinuation rate, according to the version of the study published in Diabetes, Obesity and Metabolism. The study authors explain Afrezza patients might have abandoned the study in larger numbers because they were forced to use the inhaled insulin instead of injectable insulin, even if it was making them cough. This is hardly a ringing endorsement for the tolerability of Afrezza.

Three outside authors on the paper received consulting fees or other payments from MannKind. Four additional authors on the study paper were MannKind employees.

Afrezza caused depressed lung function over two years compared to usual care. Despite the finding, the study authors (all with financial ties to MannKind) conclude, "We do not consider the observed small, non-progressive lung function changes to be clinically significant."

Of course, FDA is the only arbiter of safety that matters, which is why the ongoing lung-safety study MannKind is conducting but never discusses is so interesting. MannKind CFO Matt Pfeffer did not respond to an email seeking comment.

The chart above is reprinted from the lung-safety study results published in Diabetes, Obesity & Metabolism. It shows a statistically significant, 34 ml relative decrease in forced vital capacity for Afrezza compared to usual care after 24 months. The same chart shows a 37 ml drop in FEV1 (forced expiratory volume at 1 second) for Afrezza relative to usual care, again statistically significant.

The study also showed 5.75% of Afrezza-treated patients with a 15% or greater loss in lung function (as measured by FEV1) at 24 months compared to baseline versus to 3.28% of Usual Care patients.

Statistically significant reductions in lung function attributable to a chronic, lifetime drug like Afrezza raise serious and troubling safety questions. MannKind may be able to assuage these lung-safety concerns when it reports data from the ongoing study in 2015.

Until then, it's hard to imagine FDA approving Afrezza.

-- Reported by Adam Feuerstein in Boston.

Follow Adam Feuerstein on Twitter.
Adam Feuerstein writes regularly for TheStreet. In keeping with company editorial policy, he doesn't own or short individual stocks, although he owns stock in TheStreet. He also doesn't invest in hedge funds or other private investment partnerships. Feuerstein appreciates your feedback; click here to send him an email.
2 of 2

Check Out Our Best Services for Investors

Action Alerts PLUS

Portfolio Manager Jim Cramer and Director of Research Jack Mohr reveal their investment tactics while giving advanced notice before every trade.

Product Features:
  • $2.5+ million portfolio
  • Large-cap and dividend focus
  • Intraday trade alerts from Cramer
Quant Ratings

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
Stocks Under $10

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

Product Features:
  • Model portfolio
  • Stocks trading below $10
  • Intraday trade alerts
14-Days Free
Only $9.95
14-Days Free
Dividend Stock Advisor

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
  • Updates with exact steps to take - BUY, HOLD, SELL
Trifecta Stocks

Every recommendation goes through 3 layers of intense scrutiny—quantitative, fundamental and technical analysis—to maximize profit potential and minimize risk.

Product Features:
  • Model Portfolio
  • Intra Day Trade alerts
  • Access to Quant Ratings
Options Profits

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

Product Features:
  • Actionable options commentary and news
  • Real-time trading community
SYM TRADE IT LAST %CHG
MNKD $3.88 0.00%
AAPL $109.27 0.00%
FB $88.26 0.00%
GOOG $600.70 0.00%
TSLA $241.93 0.00%

Markets

Chart of I:DJI
DOW 16,102.38 -272.38 -1.66%
S&P 500 1,921.22 -29.91 -1.53%
NASDAQ 4,683.9190 -49.5780 -1.05%

Free Reports

Top Rated Stocks Top Rated Funds Top Rated ETFs