Yes. Sure, John. Yes. Good morning, Graig. So, we're actually, we're really excited about this asset, as John alluded to, the emerging science with regards to the MCH neurons and that mechanism of action. And as you said, the original focus around obesity and hypothalamic mediate obesity, but as the science evolves and some significant work, as I mentioned, done by Tom Scammell and his group at Harvard, it really pointed to the role of the MCH neurons in terms of the generator and the control center of REM sleep. So, with that, going back about four or five years ago, a lot of the focus shifted, and Tom Scammell and his lab worked on that mechanism, and demonstrated with the MCHR-1 antagonist probe molecule, the significant effect in reducing cataplexy in the orexin knockout mouse model. So with that, the focus sort of shifted, and that's what kind of got our attention. And realizing some of the recent focus on the orexin agonist, this really represents the potential next-generation therapy in patients with our narcolepsy, specifically around REM disregulation. And as I mentioned before, in our development program, in addition to that, we intend to explore it for stabilizing wakefulness as potential monotherapy, or as one type of treatment in a polypharmacy approach. With regards to this molecule, and what you mentioned in terms of some of the safety issues, the nonclinical toxicology in the work that's been conducted, has not shown any significant safety signals to-date. And we also have some Phase 1 PK data that's been generated actually ex-US in the UK, showing that PK profile. So, we've got a lot of information to work with to start to prepare an I&D and submit that, to then open an I&D. And the plan is to then go into Phase 2 trials.