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Biotech / Medical : CLTR COULTER PHARMACEUTICAL

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To: biowa who wrote (442)12/6/1999 10:32:00 PM
From: Vector1  Read Replies (2) of 666
 
This could explain the big drop in IDPH today. In patients who failed Rit the Zev complete response was zero. Thats right zero. I guess thats why they initially only reported the the overall response. Has anyone seen the complete response numbers in the Rit naive group.

From Prudential today:

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08:32am EST 6-Dec-99 Prudential Vector Healthcare (Toth, Robert J. 415-743-47
IDPH: ASH MEETING DOMINATED BY RITUXAN AND ZEVALIN STUDIES - 2 OF 2


IDEC presented interim Phase III data on Zevalin, its radiolabeled antibody
that is also being developed for low-grade NHL. In 29 evaluable patients
who had an inadequate response to Rituxan therapy, 46% achieved an overall
response to Zevalin. This result appears promising given the difficulty of
the patient population. However, none of these patients experienced a
complete response, which is one of the primary goals of oncologists who
treat low-grade NHL. The durability of the responses in this study were not
reported but should be a key factor in determining Zevalin's benefit
compared to Coulter's Bexxar. The Rituxan-failed patient population is in
our view the primary market for the new radio-immunotherapies, and we have
estimated its size today at around $225-250 million given the current
Rituxan sales trends. It is important to note that Grade 4 neutropenia was
reported for 28% of Zevalin-treated patients, and a company official told
us that at least several patients required rescue with white blood cell
growth factors. We believe that the magnitude of growth factor support may
become a differentiating factor between Bexxar and Zevalin and a
contributing component of the overall cost of treatment with the new
radiolabeled antibodies.
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