Martine A. Rothblatt
Analyst · -- I apologize, of Phil Nadeau of Cowen and Company
Thanks, John. Phil, as you can see, we had really nice year-over-year growth as well as sequential quarter growth. For example, Remodulin, up for the quarter year-over-year 12.6%; Tyvaso, up, year-over-year up 34.8%; and Adcirca, up year-over-year 44.7%. This is overwhelmingly due to the fact that as physicians acquire more and more experience with our drugs in treating outpatients, they tend to move into the top-end and preferred positions. For example, with regard to, let's say Adcirca, during the past quarter or 2, we have reached the position where probably more than 1/2 of all pulmonary hypertension patients are on Adcirca. And to give you a feel for the historic nature of that: I don't believe, at any time during the past decade, there has been any drug that ever was being taken by more than 1/2 of all the pulmonary hypertension patients. The market was always fragmented in some different way. It's still very fragmented, but 1 drug is now taken by more than 1/2 of the patients, and that's our Adcirca. That trend, Phil, is not likely to dissipate. Adcirca is on a strong road. We have seen no effect of, for example, generic sildenafil, on us. Nor would we because they're 2 completely different drugs: One you'd have to take 3 times a day, generic sildenafil; missing doses is problematic because the disease can claim more pulmonary vascular space due to poor compliance; whereas ours is just once daily, and it doesn't get much better than that. With regard to Tyvaso, we have during the past quarter increased the size of our cardiopulmonary specialist force that details Remodulin and Tyvaso, reaching out to more and more physicians. As the field matures and as our Tyvaso delivery system continues to mature, physicians who may not be at some of the top university centers with a large support network find that they too can actually manage patients on Tyvaso. And this is very important because it allows Tyvaso to move down into, say, like the seventh, sixth, fifth decile of PAH subscribers and, there too, augering for continued growth. If you take a look at the trend lines on Tyvaso and the sequentials, you can see that it's closing the gap with Remodulin. And in the foreseeable future, leaving aside the advent of implantable Remodulin, Tyvaso would probably begin to lap Remodulin. But that actually brings us to Remodulin, which is, again, the preferred drug for the patients at the late stage of their disease. Far more patients are placed on Remodulin than on epoprostenol, Veletri or the generic forms of Flolan. And the reason for this are the numerous convenience and safety advantages of having a long half-life on a drug when you're talking about a parental, "24 hour a day" lifelong delivery system, interruption of which is associated with rebound and potentially fatal rebound hypertension. So there is really nothing in the offing that indicates any quarter-to-quarter declines coming up in the future. In fact, as I mentioned in my quote at the beginning, the core business is going very strongly. $1 billion is the very definition of a round number. And that was the intention in coming up with that figure for guidance: it was a round number. And a round number is necessary in this kind of a market because our revenues come overwhelmingly from a couple of major specialty pharmacies. Those are our customers. We also have the x U.S. revenues, but most of them come from the U.S. specialty pharmacies. So it's very possible, as we've mentioned several times in the -- over the past few years, for revenues to be lumpy from 1 quarter to next. And it's not that we see that coming, we don't, but we've given the bracket of a plus-or-minus 5% on the $1 billion figure to provide an envelope, which would include continued growth at the current rate.