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Biotech / Medical : Neurex Corporation

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To: John McCarthy who wrote (388)1/13/1998 10:53:00 PM
From: Dr. John M. de Castro  Read Replies (3) of 449
 
John, the patient population is one that is either refractory or non responsive to morphine. So the appropriate comparison is with placebo. This should be relatively easy for NXCO to meet this criteria given the data presented.

> John McCarthy on Jan 13 1998 10:19PM EST
> I assume if its (= to) or (better than) morphine - we win+
> otherwise , more testing.

My major reservation is with the use of evaluable patients. DEPO got nailed by ODAC because they used evaluable patients for their comparison, while ODAC used intent to treat. There was a 15% drop out rate in the trial. So, the intent to treat data may not be as nice and clear cut as the data presented in the release.

I also worry about side effects. The drug is a competitive NMDA antagonist. Such drugs have a history of producing psychological symptoms such as halucinations. The drug also has a history of problems with producing precipitous drops in blood pressure.

Don't get me wrong, I'm impressed with the data. I am only putting out some cautions. This may not be the slam dunk that it appear on the surface.

John de C
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