Richard Pops
Analyst · Stifel. Please proceed with your question.
Good morning, Paul. Yes, we haven’t hit an MTD yet in the SAD and MAD, which is encouraging. In fact, based on the way the protocol was designed, we moved off of the SAD to move into the MAD and then Ib, without hitting the MTD. We’ll go back and reinterrogate that to make sure we can establish if possible a maximum tolerated dose, which is quite encouraging. As you well know, there are certain, what you expect on target adverse events that you would be looking for that our view is that it looks like the wakefulness component of orexin 2 receptor agonism can be decoupled from some of these other side effects. So that’s encouraging. The validity, as you know, the approvable endpoint in registrational studies is this EEG guided maintenance of wakefulness tests. But there are other sleep scores, as you know, qualitative PROs as well as measurements of cataplexy that are useful in NT1, in particular, where cataplexy is a hallmark feature, not so in NT2. So, I think that the anchor, the most predictive for us, we view as the maintenance of wakefulness test, which is, again, not just maintenance away from us, it’s also EEG driven. And then we will be collecting these other endpoints in our Phase 2 study. And then as we line up for the pivotal study, we’ll prioritize the primary and secondary endpoints in consultation with FDA and because there are a number of players in this field, there’s a certain consensus is building around the way to best assay the efficacy of these drugs to patients.