Obviously, we can't talk anything about ACTRIMS notifications and abstracts have not been released yet, so can't say anything about that. But I can answer your second part of your question about HCP feedback to the results we have presented previously. I think the feedback has been extremely positive. I think people intuitively, if they have a CD20 patient that walks in the door who is already relatively well B-cell depleted but having some other issue whether it's cramp gap or had some relapse, they don't feel that there's a need to go through the 150 milligram dose, which is in some respects a debulking dose where we take down the B-cells, so we can give a full proper dose two weeks later at 450 milligrams in 1 hour. So, I think that the people are happy to see that happy and not surprised to see that you can safely transition those patients to do that. Yes, I think that's a net positive thus far. Like I said, in the coming months, we'd like to present more data from that trial. In terms of BTK, I mean, look, I think most folks would believe at this point, regardless of whether one or several of the BTKs are successful in relapsing forms of MS, it's more likely than not to be an inferior profile to CD20s. I don't think anyone believes that they are that BTKs in relapsing forms of MS will be more active, more convenient, less side effects than a CD20 gives at this point. Again, I think that's probably now a foregone conclusion assuming that the studies in relapsing forms of MS are successful. Obviously, we've had some failures and some toxicity that we've seen along the way. We sit and we'll wait and we'll see what the data looks like, but again I think optimism is relatively low for these drugs in relapsing forms of MS. On the other side, I do think that there is a lot of excitement for the potential for these drugs in progressive forms of MS. I think in theory, if they would work in progressive MS that would be phenomenal, right. As I mentioned earlier, we're looking at [ACE] cell and progressive forms of MS because that is the unmet medical need. That's the area that is most concerning and is the least well treated at this point. So I think there is excitement and enthusiasm for it to -- if it works, I think there's certainly a fair amount of pessimism that it will work. But again, anytime you have an unmet medical need, people are enthusiastic about the potential. So we shall see again, would be a very nice thing for patients if these work in progressive forms of MS, I think in relapsing forms of MS, it's not a concern of ours.