Greetings and welcome to the Catalyst Pharmaceuticals First Quarter 2024 Financial Results Conference Call. [Operator Instructions] As a reminder, this conference is being recorded. It is now my pleasure to introduce your host, Mike Kalb, Chief Financial Officer. Thank you, sir. You may begin.

Thank you. Good morning, everyone, and thank you for joining our conference call to discuss Catalyst's first quarter 2024 financial results and business highlights. Richard Daly, President and CEO, will be leading the call today; and Jeffrey Del Carmen, our Chief Commercial Officer, and I will also be presenting. Additionally, Dr. Steven Miller, our Chief Operating Officer and Chief Scientific Officer, will be available for the Q&A. Before we begin, I would like to remind you that in our remarks this morning and in the Q&A session, we will make statements about expected future results, which may be forward-looking statements for purposes of federal securities laws. These statements relate to our current expectations, estimates and projections and are not guarantees of future performance. They involve risks, uncertainties and assumptions that are difficult to predict and may not prove to be accurate. Actual results may vary from the expectations contained in our forward-looking statements. These forward-looking statements should be considered only in conjunction with the detailed information contained in our SEC filings, including the risk factors described in our 2023 annual report on Form 10-K filed with the SEC on February 28, 2024, and in our first quarter 2024 quarterly report on Form 10-Q, which was filed yesterday with the SEC. At this time, I'll turn the call over to Rich.

Thanks, Mike. Welcome to the Catalyst Q1 2024 Financial Results Call. Today, we will discuss our excellent performance in the first quarter as well as our continued focus on execution, provide an update on clinical and regulatory milestones, delve into our portfolio diversification approach, and finally, provide insight into our continued delivery on financial discipline. In Q1 '24, we delivered another quarter of strong performance with total revenues of $98.5 million. This performance, along with our January equity raise, enhanced our substantial cash position, which totaled $310.4 million as of March 31, 2024. During the quarter, our agility and focus on execution enabled our team to respond to opportunities in the market and drive continued growth in FIRDAPSE, successfully launch AGAMREE and deliver on consistent performance for FYCOMPA. I want to congratulate our team for continuing to meet the challenging targets we set for them. We are poised for promising growth as demonstrated by the significant milestones achieved. FIRDAPSE continues to deliver strong double-digit growth, a tremendous testament to our ability to drive the sustained success of the brand for more than 5 years. Additionally, we successfully launched AGAMREE for Duchenne's muscular dystrophy, or DMD, on March 13. Although just over 2 weeks of launch performance are included in our Q1 financials, we are very excited by AGAMREE's performance and potential when reviewing AGAMREE's uptake trends. Based on physician and patient response, we are experiencing a great deal of momentum, and this speaks to the tremendous market conditioning we did prior to the launch as well as our ability to successfully integrate AGAMREE into our Catalyst Pathways patient services infrastructure. Although it's early in the launch, we believe AGAMREE is positioned for a significant step-up in Q2 and beyond. Jeff will provide further details about product performance during his discussion.…

Thanks, Rich, and good morning, everyone. Fueled by the successful execution of our strategic growth initiatives across our entire commercial portfolio, we are exceedingly pleased with our first quarter 2024 performance. As Rich mentioned, Catalyst had an excellent start to 2024 driven by the combination of sustained organic growth of FIRDAPSE, stable revenues from FYCOMPA and the strong initial commercial launch of AGAMREE. Q1 total net product revenues of $98.4 million positions Catalyst well to achieve our 2024 full year total revenue guidance. First, let me start with FIRDAPSE. Q1 2024 net sales were $66.8 million, representing a 16% increase over the same quarter last year, in line with our forecasted growth projections, a direct result of a sustained cadence of new patient starts, high compliance and consistent low discontinuation rates. Net new patients in Q1 2024 were the highest total since Q1 2022. We believe that these facts demonstrate that our underlying FIRDAPSE business is solid. Prescription approval rates were greater than 90% across all payers, government or private commercial insurers. As expected, net product revenues in the first quarter reflected the typical Q1 seasonality and the reset of deductibles and co-pays at the beginning of the year. In addition, some new patient and refill prescription adjudications were temporarily impacted by the Change Healthcare cyberattack, particularly in February. Given the intensely symptomatic nature of LEMS, we exercised Catalyst's no-patient-left-behind approach and provided 5 days of free drug to any FIRDAPSE patient who could not fill their prescription. It is our mission to ensure continuity of care for the patients we serve, and we believe that what we did supports that commitment. I am also glad to report that at the end of the day, we subsequently received reimbursement for all the 5-day bridge prescriptions provided. The FIRDAPSE refill rate…

Thank you, Jeff. As Rich noted, our performance during the first quarter of 2024 has set us on pace for another strong year driven by our solid financial performance, financial discipline and strong execution. We remain steadfast in our commitment to driving growth, leveraging strategic partnerships and expanding our portfolio to capitalize on emerging opportunities throughout the year. We intend to continue our commitment to grow through strategic partnerships and portfolio expansion in 2024. To support this objective, in January 2024, Catalyst sold 10 million shares of its authorized but unissued common stock to raise net proceeds of approximately $140.7 million for the purposes of funding potential future acquisitions and for general corporate purposes. Our total revenues for the first quarter of 2024 were $98.5 million, an approximate 15% increase when compared to total revenues of $85.4 million for the first quarter of 2023. Product revenue net for our lead product, FIRDAPSE, were $66.8 million, a 16% increase year-over-year compared to $57.5 million in Q1 2023. Product revenue net for the first quarter of 2024 for FYCOMPA increased to $30.4 million compared to $27.8 million for the portion of the first quarter of 2023 in which we recognized revenue following our acquisition of the product rights in late January of 2023. As a reminder, we anticipate that 2024 revenue for FYCOMPA will be affected by differences in variable consideration compared to 2023 when revenues were booked under a size-cost arrangements with distributors and government agencies. Effective January 1 of this year, these costs are tied to arrangements between the company and those distributors and agencies, which are higher. Finally, we launched AGAMREE in mid-March. And for the short time during the first quarter that the product was commercially available, product revenue net was $1.2 million. In the first quarter of…

Thanks, Mike. At Catalyst, our mission is resolute: to pioneer first-in-class innovative medicines for patients with rare and difficult-to-treat diseases. With an expanding portfolio of commercial products and a track record of operational excellence, we are primed for ongoing success in delivering transformative therapies to the market. We look forward to providing updates on our continued progress. At this time, I'll turn the call back over to the operator, and we look forward to answering your questions. Thank you.

[Operator Instructions] Our first question comes from the line of Joon Lee with Truist Securities.

This is Jeremy on for Joon. Can you just share any specific doc or patient feedback on the AGAMREE experience? And then any further updates on your BD plans? How far along are you in that search? And is there a specific therapeutic area you're targeting, such as epilepsy?

Thanks for the question. Jeff, do you want to handle the first part?

Sure. It's a little early to get some specific feedback about physicians and the efficacy that their patients are seeing with AGAMREE. What we can tell you is the physicians and the patients are extremely happy with the process to get on AGAMREE and to get drugged. So that's first and foremost. But we do anticipate feedback about their patients here shortly.

Great. As to the second part of the question, so we are aggressively pursuing opportunities, as we mentioned on the call, in the orphan space and what we call the orphan-adjacent. So we believe our infrastructure is one that really supports patient care. So when you think about what we did in the quarter and really making sure that our patients had uninterrupted care, I think it really speaks to the strategic advantage we have as a company. So we believe that our infrastructure supports essentially any orphan opportunity. And so we are out aggressively seeking opportunities across the orphan space. We believe what -- we're seeing our success -- our continued success, our ongoing success with FIRDAPSE and our burgeoning success with AGAMREE really supports that. So we are looking pretty far and wide in the orphan space. So we're -- I would say we're pretty essentially agnostic because we believe that our infrastructure would support just about any orphan opportunity.

And our next question comes from the line of Charles Duncan with Cantor Fitzgerald.

Rich and team, congratulations on a nice quarter to start the year. I had a couple of them, one on AGAMREE, one on FIRDAPSE and then one BD. So on AGAMREE, you mentioned new patient enrollments, very good to hear. Can you give us some color on where you're taking patients from? Is it more EMFLAZA? Or is it more prednisone? And any color on that as well as pacing of information from the new SUMMIT study?

Great. So Charles, great. Thanks for the questions. And Jeff, do you want to handle the first part of the question? And we'll have Steve handle the second part.

Sure. When we look at the enrollments that we're getting so far for AGAMREE, 47% of our new enrollments are from patients that were currently on EMFLAZA. 43% of our patients were coming from patients that were on prednisone. And there are just a handful or a smaller percentage that were naive patients to any corticosteroid.

And then, Charles, your second question, I believe you said the pacing of information from the SUMMIT study, is that correct?

Yes.

Yes. Steve, do you want to handle that?

Sure. Thank you, Rich, and thank you, Charles. The SUMMIT study is scheduled to be a 5-year study. We anticipate doing analysis approximately once a year, but it would depend on the nature and significance of findings that we observe during the course of the study. At the very least, the information will be published and made available to the medical information staff. And at the most, it will be submitted to the FDA under the FDA's guidance for real-world data and its use for updating product labeling.

Okay. That's helpful. And then quickly on FIRDAPSE, looking forward to the PDUFA date, possible dose expansion. Could you remind us of, call it, roughly what percentage of patients are at maximum dose? And how that decision, if it is positive to expand dosing, might impact demand for FIRDAPSE?

So Charles, currently 40% of FIRDAPSE patients -- active FIRDAPSE patients are on a daily dose of 80 milligrams, which is the maximum. There are another 4% of patients that are on a dose greater than 80 milligrams, which they work directly with the specialty pharmacy to get that approved. So we do think that there's significant upside there for patients to find their optimal dose. And over time, we expect the average daily dose, which is currently at around 61 milligrams a day, to go up to approximately 65 milligrams or 66 milligrams. That is over time. We expect for maybe the next -- the following 12 months post expansion of the label to get to that average daily dose increase.

Got it. Final question, BD, going back to the prior question. It seems like you're busy with AGAMREE launch. I guess, is -- despite the interest in additional assets, is there a goal for doing that in '24? Or is that really dependent on the opportunity set?

It's a great question, Charles. We will -- we continue under Preethi's leadership to consider a number of opportunities. I would say primary is to get AGAMREE off the launchpad, which I think we're doing a great job getting it off the launchpad. But we want to be sure we have the right opportunity. We want to build on the CNS franchise. We want to continue to look and see where the opportunities are in the marketplace and do the right deal at the right time. And we want to be sure that we take advantage of those opportunities that come our way. I think we can do additional deals, but the timing and the right deal has to be right for us. So we're going to play it smart to benefit the patients, take advantage of the talent in the organization, and obviously, benefit the shareholders.

And our next question comes from the line of Jason Gerberry with Bank of America.

One BD question for me and then one AGAMREE question. Just on BD front, I'm just curious if there's a general profile range in terms of size of deal and stage development that you look at. Would you be willing to bring in an asset that wouldn't deliver sales and profit in the short term? And how FIRDAPSE litigation outcomes sort of shape your M&A aperture? And then on AGAMREE, maybe a little surprised just to hear life cycle management discussion this early in the launch. Is this something that you'll update in the second half that could be beneficial within the IP window of AGAMREE or the regulatory exclusivity window of AGAMREE or something that's kind of a longer-term, IT-extending approach? If you can comment on that, that would be great.

Thank you. Thanks for the questions. So on the BD size and opportunity, so we would look for things at this point in our company's life cycle for things that are immediately accretive or nearly immediately accretive. We would want to take advantage of the balance sheet that Mike talked about in the call. So when we think about size and opportunity, we would want to be really thoughtful. We want to look at things that could add to the company's balance sheet immediately. So I think we would stay within our within ourselves, if you will. I don't want to commit to a size at this point in time. I think we would, again, assess but really looking at those things that are very close to market or are on market. And again, to continue to build the breadth of our capabilities so that we can continue to build and look at larger opportunities in the future as a buy-and-build company, that's what we want to do. We want to build our presence in the market. On the -- how the FIRDAPSE ligation colors our thought on that, right now, Steve can speak to the timing of that. But we assume that we're going to have a significant runway with FIRDAPSE and FIRDAPSE sales. And so we can -- we have an opportunity to build our portfolio, and we're going to take full advantage of that as we can do that for the time being. Regarding life cycle management, we believe now is the time to be looking at opportunities for AGAMREE to build a portfolio of applications for the product in rare and orphan conditions that require a steroid. We want to be that steroid of choice. And in the companies I've worked at in the past, typically, companies wait too long to think about those things. And so to your point about is it going to be something that's applicable within the window of IP for AGAMREE, exactly the point. That's what we're trying to do is make sure that we can get the studies done, identify those opportunities, get the studies done and then take advantage of it and create value for patients and create value for shareholders as well.

And our next question comes from the line of Samantha Semenkow with Citi.

This is [ Eric ] on for Sam. What do you think is driving the high percentage of patients switching from prednisone in your early launch? And how do you see that evolving as this progresses?

Thanks for your question. We do think that the conversion from prednisone over to AGAMREE is basically because of the safety profile. And many of these patients have been on prednisone for a significant amount of time and have seen or experienced those side effects. And they're looking to -- they transitioned over to AGAMREE to benefit from the more positive safety profile. So over time, we do expect this mix to be about what it is today, which is very encouraging. Initially, during planning and forecasting, we expected the initial launch to be primarily from the EMFLAZA patients or those patients that we're used to being on a branded corticosteroid. We are encouraged by this because now -- we're now opened up to the entire corticosteroid market for boys living with DMD. And that's what we're seeing and that's what we expect moving forward.

Our next question comes from the line of Joe Catanzaro with Piper Sandler.

Have a few on AGAMREE. If I recall correctly, I think you had said there were about 28 patients in the EAP program. Wondering if you could just sort of speak to what percent of those patients have been able to transition to commercial reimbursed drug. And then maybe if you could also sort of speak to the current cadence of intake forms, maybe how the current rate compares to your prelaunch experience, where you indicated there was a sort of indication of significant pent-up demand. So wondering if current cadence of intake forms sort of continues to point to that pent-up demand. And I have maybe one follow-up.

Sure. Jeff, do you want to take that?

Sure. So I can point to, first, about the cadence of the enrollments. We started accepting pre-commercial launch enrollments in December, and we saw significant pent-up demand. We also knew at that time that there were -- the centers of excellence that were waiting for an announcement of the official commercial launch date. So they were holding some enrollments until that announcement. Post announcement, we started releasing volume increase that validated our confidence in the launch. And since the commercial launch, we continue to see steady enrollments that are steady at a high level, higher than what we had forecasted, which is very encouraging. And Joe, do you -- can you remind me of your first question about AGAMREE?

Yes. Sure. It's about the EAP patients, sort of what percent have been able to transition to commercial reimbursed drug.

Correct. Of the 28, over half of those patients are on reimbursed shipments right now, and the rest are still in process.

Okay. Great. And then maybe my follow-up on -- still on AGAMREE. You guys had mentioned a step-up in 2Q that you're expecting. Maybe you could just help contextualize that a little bit. How much of that will be driven by patients already on drug seeing a full 3 months of treatment versus expectations around new patient starts?

Sure. So just to start off, as Jeff mentioned, we saw this nice curve of patients enrolling prior to launch, and physicians were waiting. And then with the announcement of the launch, we did see an increased enrollment, which was great. So we expect this rollover to happen. And as Jeff mentioned in his comments, it takes about -- currently taking about 4 weeks to convert these patients from enrollment to reimburse. So that's going to roll over into the second quarter. So we're really excited about that. And these physicians waiting to -- for the launch, obviously, now we're going to see that impact in the second quarter. But Jeff, do you want to take the rest of it?

Well said and well stated, Rich. And just to add on to that, we do expect the current positive payer landscape to improve even more over time. So that 4 weeks that Rich mentioned, we expect that to reduce within 6 months. We do potentially see it to about 1 to 2 weeks from time of complete enrollment to reimburse shipment. That's our expectation. And then the other part is balanced by a significant volume of enrollments that we continue to see. So on both ends is where we have -- why we have confidence in that step-up in Q2.

[Operator Instructions] We have reached the end of our question-and-answer session. And with that, this concludes today's teleconference. You may disconnect your lines at this time. Thank you for your participation.