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The Parkinson's Disease Foundation Counsels Caution in Interpreting 
Recent News Announcements about the Potential of Azilect® to Slow the 
Progression of Parkinson's Disease

The statement is available here:
 http://www.pdf.org/news/news.cfm?type=1&selectedItem=450


(08/29/08) (New York, NY) 

PDF Urges that Conclusions About the Drug's Effectiveness in Slowing 
PD Be Deferred Until Peer-Reviewed Results Have Been Published 

The Parkinson's Disease Foundation (PDF) is advising that the 
Parkinson's community withhold judgment as to the potential 
neuroprotective effect of Azilect®, an anti-PD medication already 
approved and on the market for symptomatic relief in Parkinson's, 
until the complete data from a large-scale recent study have been 
properly studied, peer reviewed and published in a reputable journal. 

This PDF statement was prompted by an announcement earlier this week 
from Teva Pharmaceuticals, the Israel-based manufacturer of Azilect, 
that it had for the first time presented the data from ADAGIO, a 
Phase III trial studying the drug's ability to protect dopamine 
neurons and thereby to delay disease progression, to a scientific 
conference. The announcement was made in Madrid, Spain, at the 12th 
Congress of European Federation of Neurological Societies (EFNS). 

At this time, the Parkinson's Disease Foundation (PDF) has the 
following statement to share with the community. The statement has 
been approved by Dr. Christopher Goetz, Chief of Movement Disorders 
at Rush University in Chicago: "This week's report that results from 
ADAGIO have been presented at a scientific meeting is noteworthy in 
that it confirms completion of a very large and well-designed study 
of the potential modifying effects of clinical outcome in PD patients 
taking an anti-Parkinson's medication. It is also interesting to note 
that the investigators reported that the group of patients receiving 
daily doses of 1 mg of Azilect from the onset of the study were less 
impaired at the end of the study than those who started the drug 
later during the study. The investigators presenting the data 
reported that the group receiving the chronic 1 mg dose of rasagiline 
(Azilect) met all three of the "primary end points" that were 
determined at the outset of the study to be the key outcomes of 
interest. 

"It is also important to note that the data – though promising and 
provocative -- have not yet been made available widely in the 
scientific community, and even more importantly, they have not yet 
been exposed to the process of scientific peer review that is crucial 
to validating the results of scientific research. Until such time as 
the findings are published in a refereed scientific journal – which 
we hope will be no more than a few months from now – we are unable to 
say whether or not early treatment with Azilect has long term 
benefits in modifying the course of Parkinson's disease-related 
disabilities. After critical review of the data and scholarly 
interpretation of the results, clinicians will be in a better 
position to determine if prescribing patterns and advice to patients 
will change. In the meantime, people with Parkinson's who are 
interested in this matter, or who are concerned about their own 
treatment regimen, should consult individually with their 
physicians." 

Teva's new announcement, along with an earlier one in June, have 
attracted considerable attention around the Parkinson's community 
because to date, no medication has been proven to slow the course of 
Parkinson's disease. All of the treatments currently available, 
including Azilect itself, have been approved for their capacity to 
ease symptoms, not to alter the underlying course of the disease. The 
PDF will continue to keep its community, and the general public, 
apprised of relevant developments as they occur. 

Robin Anthony Elliott, Executive Director 




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