Martine Rothblatt
Analyst · TD Cowen
Sure. Thanks for the questions, Andreas. I'm going to refer the capital allocation, the bulk of the capital allocation question to James and just giving him a few seconds here while I respond to one of the questions that you sliced in there about internal R&D and the competitiveness of the PAH space and whatnot. So we do, as mentioned in my introductory remarks, we spend about 50% of cash on various forms of internal R&D as well as SG&A, of course. And a big part of that spending is, in fact, allocated to our core competencies in pulmonary hypertension and interstitial lung disease. So in that regard, as you know, we have these registration effort going on in -- with ralinepag and the outcome study as well as a lot of effort going toward pulmonary fibrosis with TETON 1, TETON 2, PPF, plus a lot of efforts that don't necessarily have any visibility because they are still in the lead product -- lead-in effort for the product and the preclinical. But we have alternative types of methods of dosing and variations on dosing. We have a once-daily Tyvaso dosing in preclinical development. So all of these type of activities are continuing on our part. And as we've seen, since the first competition came in to us with, say, something like the Liquidia generic parenteral, I guess it was like 7 years ago or something. I really had no material effect whatsoever. There was quite a bit of concern about sotatercept. We did try to emphasize the fact that all signs were that it was much more complementary than anything else. And in fact, in the year of rollout, it has proven to be exactly that, quite complementary. So we are constantly -- at UT, we are just relentless in improving our drugs, improving our drug delivery devices, like another example I'll just drop there. Our Remunity device is now virtually used by 100% of the patients. So that's pretty amazing to swap out a parenteral delivery device that has had many, many years in the clinic and in patients' hands and in essentially about 24 months or so to a virtually 100% swap out of that device. We're now I'm preparing for yet a further upgrade of that one to what we call Remunity D9. You'll see similar types of evolution in our inhalation devices. And as mentioned, some of those developments will also allow us to -- even though I think that our 4 times a day dosing now is the easiest, the simplest, super effective as the data shows, loved by physicians and patients as the data shows. I think even there, you'll be able to see in the next few years that we'll be able to come out with new products that go for even once-a-day dosing. So this is just endemic in the UT culture, what we call approve and then improve, approve and then improve and we're relentless about that. Everybody in the company, get something approved, then improve it. Get something approved, then improve it. And that's what we're doing on Tyvaso, too. Well, with that lead in, James, can you answer some of the more econometric financial aspects of the capital allocation question?