Michael Ehlers
Analyst · Phil Nadeau from Cowen and Company. Please go ahead
Yes, Phil. I think this is a very good question. It's a broad question. I think what we would say is, look, in this area what we see and detect is a significantly changing risk profile in the area. And we see this playing out in a number of dimensions and it's within things we're doing. And if you look broadly at the ecosystem, SMA being sort of the cardinal example of that, but it doesn't stand alone on this. This risk profile in changing. Where you're successful, there's considerable high reward, as we've seen with SPINRAZA. We are very focused on mitigating the risk level of this in our overall portfolio. We do that in a number of ways Michel was talking about. It's partly by seeking later-stage assets where we've got clinical data that points to the progress, and particularly objective clinical data where we can – lead to go after genetic origins of disease. And this has been a big focus of ours with the extended collaboration Ionis in leveraging the antisense oligonucleotide platform. It's taking advantage of some of our other unique capabilities and depth of expertise in MS and SMA. And as we've been doing that and growing the portfolio, we would note that of these things we've added by bringing in or identifying, three of these deals were post proof-of-concept, two of these deals were post proof-of-biology. So that's an intentional strategy to really mitigate the risk across the portfolio. And I think whether you look at what's going on in – with – in Biogen or in the field as a whole, you can look at disease after disease where these traditional views of the risk are breaking down. SMA, migraine, muscular dystrophy, tardive dyskinesia, progressive MS, Huntington's, gene therapy, the inherited retinal diseases, ALS, treatment-resistant depression, Parkinson's, psychosis, postpartum depression, all these areas where before there have been very little prospect. In the very recent past, in the last year or two, including today, we're seeing a significant change in the risk profile in this area.