SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Biotech / Medical : Sepracor-Looks very promising -- Ignore unavailable to you. Want to Upgrade?


To: sim1 who wrote (1720)2/9/1999 5:26:00 PM
From: Biomaven  Respond to of 10280
 
Stuart,

Beats me. As I said, I've never been able to figure out the patent situation. CRO has a major partner, whereas CELG has only partnered in Canada. CELG seems to be further along in US trials. My guess is that they will both go for time-release versions, which will further muddy the waters.

Here's the discussion from CELG's 1997 10-K:

The Company filed IND applications with the FDA and the Health
Protection Branch of Canada and initiated a Phase I/II clinical trial for a
chirally pure version of dl-methylphenidate ("dl-MPH"), which has been used for
decades in formulations such as Ritalin for the treatment of ADHD in children.
One million American children are estimated to be treated with dl-MPH in its
racemic form. Total U.S. sales in 1997 of the racemic version of the drug were
approximately $400 million. The Company's study was designed to evaluate the
pharmacokinetics and potential benefits of its chirally pure version of dl-MPH.
The Company completed this trial in the fall of 1997 and announced that its
chirally pure version of dl-MPH demonstrated statistically significant efficacy
versus a placebo and preliminary indications of longer duration of action
relative to the racemic version. In addition, the Company has commenced
development of a controlled release version of its chirally pure version of
dl-MPH, which may substantially improve administration of the drug. The Company
has applied for use and process patents for both its chirally pure and
controlled release versions of dl-MPH.



To: sim1 who wrote (1720)2/9/1999 9:01:00 PM
From: A.J. Mullen  Read Replies (1) | Respond to of 10280
 
Stuart, I hold both Chiroscience & Sepracor. I can't help you wrt the patent position with Ritalin. The price of Chiroscience depends much more on Chirocaine. This is very close to approval in US and (I think) approved in Europe, but the partner is Zeneca, which has just merged with Astra; Astra markets a competing product.