News article confused me, because
interferon beta-
1a is available in the U.S. (as Avonex and
Rebif). However, the official release clarifies that "the trial was conducted with the human serum albumin-free formulation of interferon beta-1a," and that isn't available in the U.S. So while I don't know the difference, it's not really a new drug they're using here. Nevertheless, the study's approach to treatment, and its positive results, is interesting.