Published in:
Open Access
01-03-2011 | Correspondence
Consistent Biochemical Data are Essential for Comparability of Botulinum Toxin Type A Products
Author:
Andy Pickett
Published in:
Drugs in R&D
|
Issue 1/2011
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Excerpt
The recent article from Dr Frevert of Merz,[
1] together with the accompanying commentary from Dr Sesardic of NIBSC,[
2] makes a new contribution to the data available for clinical botulinum toxin type A (BoNT-A) products. However, in addition to the comments about the various technical aspects of the data provided by Dr Frevert, as described by Dr Sesardic,[
2] one important and key factor about the BoNT-A products has not been mentioned. The units of each product are different, not interchangeable, and no fixed or established conversion ratio exists between them,[
3‐
5] regardless of what clinical data are presented. …