Elan (Buy, Closing Price $12.70 ); Tysabri impacts the immune system - not new news
Analyst: Ian Hunter T +353-1-6410498 E [email protected]
Elan and Biogen Idec’s share prices fell yesterday as Teva circulated copies of a paper that University of Texas researchers propose to
present at this year’s American Academy of Neurology meeting in April, that claims to show that Tysabri can deplete immune-system
cells as much as HIV. The manuscript has been submitted to a scientific journal but ***has not yet been accepted***.
No data are yet available
as to: (i) which patient population this refers to; (ii) over what period of time the immuno-suppression was recorded; (iii) what percentage
of the patients showed that strong degree of immuno-suppression; and (iv) how the depletion compares to other like-action drugs. As
the action of Tysabri is, by nature, immuno-suppresive, some degree of depletion in immune system cells would be expected. Indeed,
the effect of the drug on the immune system will have been one of the main factors studied in depth during the extensive safety review
carried out on the 3,000 patients formerly on Tysabri and will be addressed during the Advisory Committee meeting. We remain
comfortable that the drug will return to the market as more than just a second line treatment.
Share trading to be suspended during Advisory Committee meeting on the 7 th and 8th of March
In separate news, Elan announced last night that it has agreed with the Irish Stock Exchange, The UK Financial Services Authority and
the New York Stock Exchange to suspend trading of its securities over the period that the FDA Advisory Committee is sitting to review
Tysabri on 07 and 08 March. Biogen Idec had already announced similar action a couple of weeks ago.
Analyst: Ian Hunter T +353-1-6410498 E [email protected]
Elan and Biogen Idec’s share prices fell yesterday as Teva circulated copies of a paper that University of Texas researchers propose to
present at this year’s American Academy of Neurology meeting in April, that claims to show that Tysabri can deplete immune-system
cells as much as HIV. The manuscript has been submitted to a scientific journal but ***has not yet been accepted***.
No data are yet available
as to: (i) which patient population this refers to; (ii) over what period of time the immuno-suppression was recorded; (iii) what percentage
of the patients showed that strong degree of immuno-suppression; and (iv) how the depletion compares to other like-action drugs. As
the action of Tysabri is, by nature, immuno-suppresive, some degree of depletion in immune system cells would be expected. Indeed,
the effect of the drug on the immune system will have been one of the main factors studied in depth during the extensive safety review
carried out on the 3,000 patients formerly on Tysabri and will be addressed during the Advisory Committee meeting. We remain
comfortable that the drug will return to the market as more than just a second line treatment.
Share trading to be suspended during Advisory Committee meeting on the 7 th and 8th of March
In separate news, Elan announced last night that it has agreed with the Irish Stock Exchange, The UK Financial Services Authority and
the New York Stock Exchange to suspend trading of its securities over the period that the FDA Advisory Committee is sitting to review
Tysabri on 07 and 08 March. Biogen Idec had already announced similar action a couple of weeks ago.
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