Actually it doesn't say that it won't help with SP or PP MS just that RR patients received more benefits from the treatment. It might be some as simple as having more follow up treatments in those with SP or PP MS. The most intriguing part of the report is that ALL patients saw a reduction in existing lesions. Even if a PP patient needed to go for annual treatments that's still far better than any of the current treatments, especially if it reverses some of the damage, with the hopes of complete reversal.

I'm sure it's still a long way off before it'll be available, and longer still before insurance companies will cover the treatments, but it shows promise if the report is correct. I'd love to see the whole study!