All the worry about slowing adoption of Biogen Idec
Not only were worldwide sales of Tysabri up 27% to $254 million, but patients are moving onto the drug at a quickening pace. In the first quarter of the year, the companies added about 170 patients per week, while in the second quarter that number increased to more than 260 per week.
There's some concern Biogen and Elan might lose revenue if patients start taking drug holidays to remove the Tysabri from their bodies. (Tysabri inhibits the immune system, which is believed to allow the brain infection.) Fortunately, there doesn't seem to be much of that going on, with revenue per patient holding relatively steady.
Q1 2008 |
Q2 2008 |
Q3 2008 |
Q4 2008 |
Q1 2009 |
Q2 2009 |
|
---|---|---|---|---|---|---|
U.S. Tysabri Sales (in millions) |
$86 |
$99 |
$122 |
$115 |
$116 |
$125 |
Approximate Number of Commercial U.S. Patients on Tysabri |
15,300 |
17,800 |
19,500 |
20,200 |
20,800 |
22,000 |
Revenue per Patient |
$5,621 |
$5,562 |
$6,256 |
$5,693 |
$5,577 |
$5,682 |
Source: Company press releases.
The good news for Biogen didn't stop with Tysabri. Sales of its other multiple sclerosis drug, Avonex, grew 12%, thanks in part to price increases. Pfizer
Contrary to Carl Icahn's view, I think Biogen is in a pretty good position right now. It recently licensed the rights to an Acorda Therapeutics'
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