Thanks DD - an interesting and though predictable result:
"These observations may be due to the emergence of neutralizing antibodies (NAbs) in patients taking IFN-beta."
There may also be antibodies to Copaxone but I am not aware of a test for it.
BTW - my wife is now on Tysabri (2 infusions) after many years on C. It does appear that the precursor (JCV) to PML can develop on mono-T in as little as 6 months*. This will be an issue that should be followed for T patients and ELN/BIIB investors.
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