Good morning. My name is Adra and I will be your conference operator today. At this time, I would like to welcome everyone to the argenx Second Quarter 2024 Financial Results Conference Call. Today's conference is being recorded. All lines have been placed on mute to prevent any background noise. After the speakers' remarks, there will be a question-and-answer session. [Operator Instructions] At this time, I would like to turn the conference over to Investor Relations, Beth DelGiacco. Please go ahead.

Thank you. A press release was issued earlier today with our half year 2024 financial results and second quarter business update. This can be found on our website along with the presentation for today's webcast. Before we begin, I'd like to remind you that forward-looking statements may be presented during this call. These may include statements about our future expectations, clinical development, regulatory timelines, the potential success of our product candidates, financial projections, and upcoming milestones. Actual results may differ materially from those indicated by these statements. argenx is not under any obligation to update statements regarding the future or to conform those statements in relation to actual results unless required by law. I'm joined on the call today by Tim Van Hauwermeiren, Chief Executive Officer; Karl Gubitz, Chief Financial Officer; and Karen Massey, Chief Operating Officer. I'll now turn the call to Tim.

Thank you, Beth, and welcome, everyone. I'll begin on Slide 3. Last week, many of you joined us for our R&D Day, where we laid out an Ambitious Vision in 2030 and shared a comprehensive overview of the growth opportunities ahead in our deal to achieve this vision. We are in a very strong position today to generate substantial value across our business, investing in our internal innovation engine, executing on our differentiated lot asset pipeline and building on the commercial success we have achieved in our first 10 quarters of launch. This is a team that delivers on our innovation mission time and time again and on towards our goal to transform autoimmunity and reach 50,000 patients globally. Given the recency of this update, we will aim to keep our prepared remarks brief and focus primarily on the second quarter dynamics. But first, I'd like to highlight key themes that emerged from the R&D Day in the context of our 2030 Vision. Slide 4. The first theme is around how we innovate, centered on a model of co-creation. This model has been core to our growth since I'm founding and still exists in the most obvious form today with our immunology innovation program. We have a strong backload of success in building out our differentiated pipeline, including eight out of 12 molecules that demonstrated human proof of concept and nine that are first-in-class targets. We have no shortage of opportunity with identifying novel targets and believe our overall approach sets us up to drive continued pipeline expansion for years to come. The second thing is the new standard we're starting with FitGard in MG. We are currently deleting advanced biologic in MG and have delivered 10 consistent quarters of growth since our initial launch. We are making excellent progress…

Slide 6. Thank you, Tim. The second quarter 2024 financial results are detailed in the press release of this morning. Total operating income in the second quarter is $489 million. This reflects $478 million in product net sales and $12 million in other operating income. In the second quarter, a $478 million in product net sales is attributed solely to MG patients. We received the CIDP approval on June 21st, and our teams were immediately in action the next day. It takes time at the start of a launch to get patients through the funnel from Script to injection. So the first CIDP revenue will be a third quarter event. Product net sales of $478 million represents 20% growth quarter-over-quarter compared to Q1 2024, which we know with a biologic is typically a more challenging quarter due to insurance reverification and loss of shipping days with Weber and holidays. The product revenue breaks down by region to $407 million in the U.S., $20 million in Japan, 35 million EMEA and $14 million from products supplied to Zai Lab in China. Operating expenses in Q2 were $535 million, an increase of $29 million, compared with Q1 2024. SG&A expenses are $256 million in Q2, which is an increase of $20 million compared to Q1. The increase reflects a full quarter impact of the expansion of a customer-facing organization in the U.S. as well as incremental expenses to prepare for the CIDP launch. R&D expenses on the continued investment in our pipeline of $225 million in the second quarter, broadly in line with the previous quarter. The operating loss of the quarter of $45 million is offset by financial income of $30 million and a tax benefit of $44 million. The tax benefit is a result of a deferred tax asset recognized…

Thank you, Karl. Slide 8. I'm very excited by our Vision 2030, especially the ambition we have set for ourselves to impact the lives of 50,000 patients globally and their K gives. To reach this goal, we will need to expand in a multidimensional way, getting more medicines approved across many indications, product presentations and geographies. We have a strong commercial playbook in place that delivered in gMG, and we'll be leveraging that same approach for CIDP, focusing on evidence generation that matters most to physicians and patients, empowering patients to demand more from their treatments and last, the need to execute on our strategies in speed and urgency. We know that patients are waiting, and we also know that every day counts in building out our first-in-class leadership position. Slide 9. Starting with gMG, I'm extremely proud of the team who worked really hard to expand our reach into new patients for our 10th consecutive quarter of revenue growth. We said this in Q1 and can reiterate it today that all key indicators of growth are performing well, and the fundamentals to the commercial business are strong. Focusing on the key drivers of growth this quarter. We saw the seasonality impact in Q1 normalized in Q2 with the impressive 17% quarter-over-quarter growth. Within the US, Hytera continues to attract both new patients and prescribers to the VYVGART franchise. This is important for a few reasons. First, over 50% of new high tree patients are coming from orals and 60% are brand new to VYVGART, which is consistent with our goal to reach early aligned patients and to expand new patients with Hytrulo. Second, we continue to expand our prescriber base for MG, many of whom have the potential to be CIDP prescribers. This will serve us well in our…

Thanks, Karen. Slide 14. I'm proud of the argenx team and their tireless commitment to changing the lives of patients through our science. We are perfectly positioned with the right team and the right approach to execute on the broad opportunity ahead of us. We will continue to lead with the strength of our data and deep knowledge to address the sizable MG opportunity ahead and will apply the same rigor with CIDP. And this is just the beginning. We are eager to raise the bar for how autoimmune diseases are treated as we continue to expand our horizons, embarking on new paths to create long-term value for patients and shareholders. Thank you for your time today. I would now like to open the call to your questions.

Thank you. We will now begin the question-and-answer session. [Operator Instructions] We'll take our first question from James Gordon at JPMorgan.

Hello, James Gordon, Morgan. Thanks for taking the questions. Two questions, please. First question was on discard performance in Q2 and the extent to which we can extrapolate that to Q3. So sales were up 79 million, which was a strong performance. But how much, if any, would you say was one-off phasing that we should sort of take out if we're thinking about what the underlying performance would be. And if we're thinking about doing our Q3 modeling, how careful do we need to be about any reversals or seasonality? Or can we make quite a strong extrapolation from how well this goes down today? That's the first question, please. The second question was Phase III initiation for ITP, and I saw a comment or heard a comment about this being an efficient for. So how might this trial differ from the previous two Phase III in ITP. Can you expedite it if it's an efficient trial? And would you be going for a smaller patient population in some way or a similar sized population just a different design.

Thank you, James. Thank you for asking these 2 questions. I would like to hand over to Karen to comment on the underlying dynamics of the business and how to see the overall trends in our [indiscernible] business first. And then I will take the question on the ITP study in Phase III. Karen, why don't you go ahead with question one.

Thanks, Tim. And thanks for the question and for recognizing I think, like you, I'm really pleased with the results of the quarter -- this quarter. The way that I would think about it is that when you look at the first half of the year in totality, what you see is that we maintain that consistent momentum that we've had since launch. So we've had 10 quarters of consistent growth -- pretty consistent growth. I would take that longer-term view as I was looking to the future if I was you. And I'm confident that we will continue that consistent momentum. The underlying dynamics are strong. We continue to get early aligned patients. The majority are coming directly from the orals. We're growing both that and Hydro, and we are broadening that prescriber base, which also serves us well for the CIDP launch. So, I would say, think about consistent momentum and growth as we've seen over the last 10 quarters. I'll hand it back to you, Jim.

Thank you, Karen. And let me briefly comment on the ITP study. First of all, I would like to take a step back and remind the audience about the ADVANCE IV study, but I think we had a very impressive efficacy with an IWG score of more than 50% in refractory patient population and a physician community, which is excited also about the very clean safety profile. And we observed the patients in our open-label extension study. They continue to do actually very well in ITP and also the Japan launch of ITP is actually going according to plan. So the task we gave that the team was to sit down with FDA, go through all the data and propose a small confirmatory study in order to push the ITP indication over the finish line. And I think they succeeded in doing that. So by leveraging all the insights and the know-how we have on the disease by actually proposing an alternative primary endpoints, which allows for a small confirmatory study, we think we are on track to start a small ITP trial before the end of the year, but I think we will be able to get the product over the finish line in that refractory patient population we have been studying all the way. Thanks for the questions.

[Operator Instructions] We'll go next to Tazeen Ahmad at Bank of America.

Hi, good morning, guys. Here's my one question. I just was curious about the PFS filing. I know you've talked about already having applied officially. But given that there's no PDUFA, we're just curious about how we should expect to think about communication from your team on what part of the application is in process and what back and forth there might be? And do you have an idea of when you would be able to get that salon approval, given that doctors in particular, seem to be excited about having that as an option for patients. Thanks.

Thanks, Tazeen. Thanks for being with us this morning. People question simple answer, the filing has been submitted and is accepted and other view with the FDA. And I think we will have a better sense of approval timing when the process unfolds or stay tuned. We will keep you updated on the progress we make. Thank you.

Next, we'll move to Allison Bratzel at Piper Sandler.

Hey. Thank you for taking the question. Maybe just a follow-up from the R&D Day. Could you help us understand just the scope of the data required by FDA that will be needed for filing in seronegatives and ocular MG patients. I think you described an ability to leverage existing trial data and railroad data, at least for seronegative patients, but I've just been getting a bunch of questions on this. So any more color there would be helpful. Thank you.

Yes. And thank you for the question, Allison. So remember that we put strong results in seeing patients. And if you already have an approval in Japan, but actually in the real world, the product is doing very well in seronegative patients, and we have impressive case imports out of Europe and where people have been successfully using the drug in seronegative patients. So we made a commitment to the patient community. We would not give up, and we have been entertaining the dialogue with the FDA on seronegative patients in the background. I think where we could land with the FDA is a pretty fast elegant study in seronegative patients, which, as Luke called during the R&D Day, is somewhat relaxed fee value. So I think the FDA is taking the existing evidence into account and is allowing us to run such a trial. So we think there's a high demand. This is an elegant study, and we will do everything we can to enroll that study as fast as we can. Thanks for the question.

We'll move next to Rajan Sharma at Goldman Sachs.

Hi. Thanks for taking my question. I just wanted to just kind of competitive landscape in Myasthenia Gravis and how you see we've got kind of continuing to differentiate that. There's obviously a busy pipeline. We've got taken in a Phase 3 also in a Phase 3. So could you just kind of discuss how you think we've got differentiates relative to those mechanisms? And then longer term, what gives you confidence that VYVGART and the FcRn more broadly remains kind of the preferred treatment option in early line patients.

Thank you for the question. I will first hand over to Karen to comment on how you see the overall dynamics of this market and on how we're building it together. Maybe Karen go first and then I will briefly comment on your differentiation question. Thank you.

Sounds great. Yes, thanks for the question. And look, I think building on what we shared at R&D Day last week, we believe that innovation coming to the MG market is good because it grows the impact that we can have for patients expands the market expands the number of patients that are treated with advanced biologics earlier as well. So we believe innovation is great for patients, and I think we're seeing that. And we believe we're very well positioned to continue to lead in that growing market. And I think there's a few things that maybe I'll update you ask about the differentiation that I'll touch on. One is around we're first-in-class FcRn and it's clear that FcRn certainly VYVGART are being used early in line, I said earlier, over 50% of our patients are coming directly from the oral. So that's where the growth is, and we're positioned well there. I think we compete really well on our -- we have a rest of efficacy, but also deep and sustained efficacy, and we have it across cyclical and biweekly dosing regimes. So I think that's a really strong position to be competing from -- and don't forget about our real-world safety, the length of that real-world safety, the number of patients as the first mover advantage. And of course, we have the treatment -- low treatment burden. So we have both IV and subcutaneous, we have PFS plan. So overall, I think the dynamics in MG are positive if the market is growing, and we're well positioned to maintain and even adapt our leadership. I'll hand it back to you, Tim.

Yes. Thank you, Karen. Much appreciate it. If you just look at the biology of the disease, it is crystal clear that MGs an IgG mediated disease. Remember the team most of action of these pathogenic antibodies, component recruitment, just being one of them. And this nicely translates into the clinical data, right. So let me remind you that 80% of VYVGART patients achieved in ADL lower than 5, which is a threshold for entering in clinical trial, and at 50% to 55% of VYVGART patients achieved minimal symptom expression. So, there's always the need most effective line for alternative methods of action, because the truck only works in 80% of patients. But it's difficult to go into more detail in absence of data. So, let's look at the data to then further understand how the biology really plays. Thanks for the question.

We'll move next to Derek Archila at Wells Fargo.

Hey. Good morning and congrats on the progress. Thanks for taking the question. So just -- can you discuss maybe how the time from payer approval to injection that you're currently seeing during the early part of the CIDP launch compares to what you saw in the early part of the MG launch. Is that similar? Or is it different? And maybe a little color on why?

Karen, would you mind taking this question, please?

Yes, happy to take the question. Thanks. First of all, just to start with saying, we're really pleased with the strong and positive response we're having in CIDP. And to answer your specific question, as enrollments come in, it does take a while for patients to get approved by their payers. And it's that period of time, they can take a few weeks before they get injected, and that's standard for any launch. It's the reason that we're so focused on getting payer policies in place, because once the payer policy is in place, that process from script to injection can go more quickly. I would say we're exactly on track where we thought we would be, both in terms of that process, as well as most importantly, the discussions that we're having with payers around getting those policies in place. We're really pleased with the progress as the team is acting with urgency, and I think we're right on track and pleased with where we're at. I'll hand it back to you, Tim.

Yes. Thank you, Karen. And we would like to ask a little bit patience Derek, because remember what we did for MG, right, I mean, it took us two quarters to install broad and favorable policies. That was our commitment to the patient community, and that is fast. I mean two quarters is really outstanding and outstanding job done by the team, and we will seek to replicate that for CIDP. Thank you.

Next, we'll take a question from Akash Tewari at Jefferies.

Hey. Thanks so much. So kind of on that point on CDP, you mentioned in the past you're clearly seeing strong demand from doctors, but you wanted to see how that actually translated to patient impaired demand, given the label, the overlap and the prescriber base and the amount of IVIG experienced patients here, would it be fair to say, the CIDP launch it at least be half as good as gMG out to the first year. And maybe to that point, do you think we will see this kind of inflection after two quarters with CIDP like we saw with gMG? I just wanted to double click on that point like that would say? Thanks so much.

Yes, Akash and thank you for the question. Thanks for being with us today. It is tempting right to draw analogies between a gMG launch and a CIDP launch. But what we're trying to say and explain is that the two distinctly different markets with their own dynamics -- launch dynamics. And maybe, Karen, you want to dig a bit deeper into this question, right?

Yes, I think that's right. It's very hard to draw parallel. They each have their own dynamics. One thing that I would say around the inflection point that you mentioned after two quarters, I wouldn't think about an inflection point. The payer policies will come in sort of one by one over the two quarters. And what we like to think about is that by the time you get to the end of two quarters, you might have -- you have that critical mass where neurologists really can start to get confident that favorable payer policies are in place. So we do believe that there will be uptake, the things that we saw in MG, and we think that it will be consistent over the period of time. But the dynamics between the two launches are very different for the reasons that you pointed out.

We'll go next to Alex Thompson at Stifel.

Great. Thanks for taking my question. I guess, I wanted to ask about OpEx trajectory over the next couple of years, how you're thinking about that as it relates to expansion into the additional Phase 3 programs as well as thinking about commercial expansion beyond neurology? Thanks.

Thank you, Alex. It's Karl. I'll take that question. In terms of SG&A, our infrastructure is now largely in place. As you will remember, we put that expansion in the US in Q1. For the rest of the world, we have infrastructure in most of the markets with a few big markets still outstanding in Europe. I would expect SG&A from here on forward to grow, but if we grow will be muted, and you will see the rapid expansion. In terms of R&D, again, I think that will grow quarter-over-quarter as we invest in all the new science, which we talked about last week. I think we have a unique opportunity to invest in ourselves here to set us up for a long sustainable future. That's what we're going to do. Thank you for your question, Alex.

We'll go next to Thomas Smith at Leerink Partners.

Hey guys, good morning. Thanks for taking the questions, and congrats on the strong results. For VYVGART in MG, can you just remind us on the data that's being generated that could support chronic dosing in addition to the current cycle-based dosing? And whether you expect to get chronic dosing explicitly added into the label? Or how important do you think it is for prescribers to have that chronic dosing flexibility and label to facilitate access and reimbursement? Thanks.

Thank you for the question. The answer is simple. We have chronic dosing in the label. The label is basically describing the use of VYVGART with achievement of statistically the plentifully positive gMG patients. So we have cyclical dosing, but that is, of course, chronic use. And we are the only company, which has already such a long time line of chronic dosing of patients. But I think it is important to call out that the safety profile of the drug maintains consistent and that we see a consistent minimum symptom expression over multiple years now in 50% to 55% of the patients. What we did do is we run a ADAPT NXT study, which was filling a data gap for those patients, which, for example are coming from chronic plasma exchange for chronic IVIg patients, which we really did not study in the ADAPT trial, because these patients cannot stand, of course, cyclical dosing, if you're on a weekly plasma exchange, you would need to feel intense chronic therapy. NXT study, we have actually shown that every alternate dosing with VYVGART is as powerful as the cyclical dosing, both from an efficacy and a safety point of view. So in summary, I think we're the only company really with chronic dosing data. And we're the only company, which can offer such a diverse set of dosing schedules. Thanks for the question.

Next, we'll move to Yaron Werber at TD Cowen.

Great. Thanks so much and really nice start showing team. A quick question. Just on Europe and Japan. I know Europe is very tough these days and Japan usually got lumpiness as you noted, and obviously changes in the pricing. But just any sense, kind of, what should we expect there in terms of acceleration of sales? Thank you.

Yaron, it's a great question, and thank you for assuming out all the global aspirations of the company. This is a question I would like to hand over to Karen.

Yes, happy to take this. And thanks for the question. So maybe I'll break them out and talk about Europe first and then Japan. I would say in Europe, we're on track. As you know, it takes a little longer, as you already called out in Europe to get pricing and reimbursement in place across all of the different countries. We're pleased with the progress that we've made. And certainly, in three of the big five markets, Germany, Spain and Italy, we have good reimbursement. We have strong clinical advocacy, and we're really seeing that consistent uptake with what we're seeing in the US. And what I mean by that is that we see a broader prescriber base, not just in the academic centers at broader potential and really pushing towards earlier line use. So I think we're seeing consistent trends there. And as we open up new markets with pricing and reimbursement, then I think you'll start to see that consistent growth as well. So we're pleased where we are in Europe. We're on track. We take it step-by-step. It takes a little bit longer. In Japan, I just want to applaud the team. I think they've done a phenomenal job. I mean if you look back quarter-over-quarter, it's just so incredibly consistent with the growth in Japan, and we see that again this quarter I would imagine that -- you can imagine that outlook being consistent moving forward. So we just recently launched VYVDURA, which is the name for subcutaneous in Japan. And that, like in other markets, we're seeing that really expand the patient population that is open to the [indiscernible] with those again opening up those earlier lines of treatment. So again, I would say, consistent growth, as you've seen for the last 10 quarters from Japan that we can expect in the future. Thanks for the question.

We'll move next to Matt Phipps at William Blair.

Thanks for taking my question. Congrats on the progress. Quickly, you mentioned the different endpoints in the next ITP trial. Is that just looking at a different time frame for a sustained plate response? Or can you use something like IWG responders as the primary endpoint? And then maybe just quickly on the launch of ITP in Japan. Any sense yet on where VYVGART is being used in the treatment paradigm for ITP patients. Is it after multiple thrombocytopenia, can you saw it earlier in that treatment paradigm? Thanks.

Two great questions. Thank you. But I will hand over questions to Karen. On the ITP trial, I think the reason why we can go with a significantly smaller study in a confirmatory mindset is because we can work with an endpoint, which is looking for extent of disease control. And we can really leave us the know-how and the expertise we have developed in running ITP clinical trials. So I think this is going to be, roughly speaking, a trial let them have the size of the global Phase III trials, which we have done so far. And we think it's a responsible investment to make for a significant patient unmet need waiting on the other line. Karen, would you mind discussing the Japan question, please?

Yes. Happy to take that. I would start by saying the ITP launch in Japan is going really well. We've applied sort of the same launch label that we have in other launches, and we're seeing the same strong early performance. And what I would say is that it's clear that there's an unmet need in these ITP patients. So far, what we're seeing, to your specific question is that the early experience is in later lines of therapy, and that's exactly what you would expect in any of these launches. The doctors want to try to get experienced maybe in those refractory patients in those later-line patients get experience under their belt and then start to move early align -- but what we're seeing that I'm really pleased with is that there's a strong belief in the MRA in the mechanism of action of FcRn, the neurologist -- sorry, the hematologists are responding that they believe in the MRA and therefore, that they believe in the reason to try to get. So, I would say strong early results, exactly where we would expect them and really important learnings that we're going to be able to take away from this Japan launch as we think about the U.S. and potentially other launches with the second study that we're planning. Thanks for the question.

We'll go next to Suzanne van Voorthuizen at Kempen.

Hi team, this is Suzanne from Kempen. Thanks for taking my questions. I just have a small follow-up to last week's R&D Day regarding argenx 121, the IgA degraded that was revealed. Can you give some context to the indications where such molecule would fit well? How many indications do you see? And also how you compare the opportunity in terms of size? Is there a potential for this to be an opportunity of Fitguard size? Or do you see more parallels to a drug like MPA looking at the commercial opportunity? Any thoughts or direction here will be appreciated. Thanks.

Thanks, Suzanne. Thank you for this question. You know that when we take a product forward in the pipeline that it has got provided to play across multiple indications. So, it's not a single indication asset. I think what we said on the volume during the R&D Day is that there's a growing understanding of the pathogenic role IgA autoantibody display in podium disease. It's actually remarkable how little we know, above and beyond betsenica IgG. So this is a field which is completely emerging. We are very pleased that we can go in that and [indiscernible] the work we like to do. And then in terms of indications, we gave you a conceptual list of indications where we know that IgA antibodies drive disease. Of course, everyone knows about IgA nephropathy. I think there is a field which is just being built. I think it's a large market opportunity, which will support multiple generations of innovation and multiple innovative molecules. So, that's an obvious one. We spoke about IgA vascalitis. But again, from a biology point of view, that is in the bull's eye of the disease, better more indications. And at this moment, we will stay conceptual because we're still doing some background work on these indications. And the opportunity will unfold when we bring this molecule online in all these different clinical trials. So stay tuned. We think it's a significant opportunity, but I think we can follow the biology. So we're very excited about the molecule. Thank you.

We'll go next to Yatin Suneja at Guggenheim Partners.

Hey guys. Congrats on the quarter. Two very quick ones for me. Could you just talk a little bit more about the subcu and IV dynamic like how is subcu -- share subcu have right now versus IV sets growing the market? And then just as we think about future with the launch of CIDP, any calls on establishing guidance for us? Thank you.

Thank you for both questions, Yatin. Let's start the question on the subcu versus IV dynamic. Karen, would you mind commenting on the dynamic. I don't think we quantify it, but maybe you can explain the dynamic.

Yeah, happy to, exactly. So we don't provide the specific breakdown. But what I would say that I think is helpful in terms of the dynamic, both VYVGART and Hytrulo are growing in terms of new patient starts and in terms of revenue. And what we see and what the real value of Hytrulo is, is that I would say it opens really up new prescribers that might not be for whatever reason, interested or comfortable with an IV option, some new urologists that are more comfortable with injections. And that also opens up new patients that are seeing those urologists also potentially there are patients that don't want to go have the IV, maybe they think that they're less -- their disease is not severe enough that they need an IV option, but they're open to an injection option. So I would say by having subcutaneous, it aligns directly with our strategy of moving into early aligned treatment, and we see that very clearly. And it also aligns with our strategy of broadening the prescriber base for VYVGART, which obviously also helps us with CIDP. The other important dynamic that I think I just want to highlight on Hytrulo is that our goal and our strategy is not a switch strategy from VYVGART. So around 60% of the Hytrulo patients that are starting on Hytrulo are actually new to the VYVGART franchise. And that just demonstrates how we're really expanding the market, both in terms of prescribers and patients with the subcutaneous option. And I'll hand it back to you, Tim.

Actually, we had a cut in our line. If Yatin is still on. If you could just repeat his second question, that would be helpful.

Yes. I'm online. So the second question was about guidance. How should we -- how are you guys thinking about establishing guidance? And when should we expect that?

Okay. That is clear. Thank you, Yatin for repeating it. This is a question for Karl, right?

Yeah. Thank you. Thank you, Yatin. I mean, we didn't provide guidance this year, revenue guidance due to all the unknowns out there, in particular for CIDP loans and the geographical expansion. So I think as a company mature, clearly, we need to think about guidance. So we will listen to our stakeholders, including our investors and analysts. And this is something, which we will consider maybe this is something we can do in January next year. But for now, we're going to focus on executing, and we have provided the expense guidance and the cash balance, and I will leave it at that for now.

And we'll go next to Vikram Purohit at Morgan Stanley.

Hi, good morning. Thank you for taking our question. We had one on the commercial opportunity in ocular MG. So based on the neurologist feedback you received and just the experience you have in the space with this indication overall at this point, how distinctly do you think ocular MG is managed and viewed and treated versus more generalized MG. And based on that, how drastically do you think the cadence of patient adds could change based on a potential label expansion into ocular MG? Thanks.

Thanks for the question on ocular MG. So by having been in the MG space for some time, we have been hearing more about the unmet medical needs in ocular MG, and it could be a wrong assumption that ocular MG is a milder form of MG compared to the generalized form of myasthenia. So ocular MG patients are pretty debilitated and disabled because with double vision, there's not too much activities of deal living you can do in terms of working on screens, driving, and then I'm not even talking about the headaches these people experience. Today, on patients are basically only treated with steroids. And some of them actually do very well on steroids where as a subset of gMG patients, which badly needs another tool in the toolbox. And after close consultation with the community and the experts we could crystallize, I think a big gMG study where we had a successful interaction with the FDA, the green on trial design and endpoint. And in the real world, some of these gMG patients are actually seen by ophthalmologists or neuro ophthalmologist and that when these symptoms start to spread that being referred to a neuromuscular specialist. So I think this is a significant opportunity and a nice addition if we are successful to our presence in the MG space. Thanks for the question.

We'll take our next question from Charles Pitman-King of Barclays.

Hi. Thank you for taking my question. Two from me. Just going back to the potential risks from competitive readouts to your kind of dominant position in the second half of this year. I'm just wondering what metrics will you be looking at from these readouts to determine whether any of these really pose a risk to your increasing market dominance? And then just a second one on the kind of Chinese commercial opportunity. I mean I understand VYVGART not going to be reported in August. But just in terms of how you are thinking about this from an clinic perspective, how established the shipments and what is the expected addressable market and pricing structure that you expect to benefit from going forward? Thanks.

Thank you for both questions. Karen, I will give the second question to you. I think on the first question, we can be relatively brief. In absence of data, I think we would find ourselves in an area of speculation, which we do not really like to do as a science-based company. The only thing I can do is remind you of how high we have set the base in the MG space. I think we have the fastest onset of action. We have the deepest action. We have a very nice durability now over many, many years in our MG patients. And importantly, I think, with a very clean safety profile. And then from a product presentation point of view, I think we have by far the broadest portfolio of product presentations, which we will continue to aggressively expand. So that's it for the data, but I think we're well benefit to compete. And Karen, do you mind taking on question 2.

No, happy to take that question, Tim. And look, I won't comment on Q2 results. Of course, we'll let Zai Lab comment on that. But what I will say is a few thoughts on, first of all, starting with the fact that I think Zai are incredible partners, and they've done a great job with the launch of MG. And we see and with them a long-term partnership, and I think a lot of opportunity in the future in China. Obviously, it's a big market. And what we've seen to date is a lot of volume coming in early on. Through Q1, you saw a big volume of new patient stock in Q1 and I think that reflects the market opportunity in China. I think we've done a great job of not just getting the approvals, but also the NRDL listing, and that certainly helps with uptake. We expect that to continue. And more recently, we got the subcutaneous version approved in China. So I think overall, between the volume of patients with MG in China alongside the great partner we have in Zai Lab, I think we're looking positively at the outlook for China. I'll hand back to you, Tim.

Thanks, Charles. Thanks for the question.

We'll go next to Leland Gershell at Oppenheimer.

Great. Thanks for taking our questions. Just wanted to ask, Karen, you've been consistent in moderating expectations for securing payer agreements for CIDP. Just wanted to ask if that process has been going in line with your expectations internally? And I also wanted to ask if you've been facing any pushback from payers with respect to requiring a step-through from IVIG? Thank you.

Hi, Gershell. Thanks for the question...

Yeah. Happy take that

Yeah. Thank you.

Yeah, it's a great question. And we talked earlier about why it's so important to get these payer policies in place. I would say that we're -- as I said before, we're exactly on track with where we thought we would be. And I mean that in terms of both how the conversations with payers are progressing and which are progressing well and also the conversations that we're having with payers in terms of what those policies should look like. In terms of IVIG, I think one thing that's important to remember about this CIDP market is that the majority of patients have been exposed to IVIG at some point. And we know from our clinical trial that we have equal right to respond, whether it's IVIG background therapy coming off, no treatment in the last six months or steroids. So we think we're well positioned with our data, and we think the payer policy -- the payer discussions are going well to get policies in place that will set us up for a successful and a strong launch over the coming quarters. Anything to add, Tim. Thank you for the question. We're ready for the next.

We'll go next to Samantha Simankow at Citi.

Hi. Good morning. Thanks for taking the question. Just one on the PFS for me. Now that you filed and you're preparing for a potential launch of the PFS. I'm curious how much more growth in gMG are you really thinking about that, that formulation will drive? What patient segments do you expect to open or expand? Do you think this will be more of a switch market than what you see with Hytrulo? And just how should we think about the magnitude of impact on revenue, assuming you have that approval in the near future? Thank you.

Yeah. Thank you. That's a great question on PFS. And Karen, I think why don't you explain what this will just continue that steady strong trajectory into the MG population.

Yes, I think that's exactly it, Tim, and what I was going to say. I would say this just continues to expand and reinforce the momentum as we continue. We started with IV, then we expanded into subcutaneous and then certainly expanding into PFS, it opens up different prescribers as well as different patients. And I think that's reflected in terms of how we explain the addressable market expansion at R&D Day. Certainly, what we see is that there will be a growth in biologics share of market and that we will be well positioned within that growth. And certainly, PFS helps us to maintain our leadership and certainly with the early aligned patients and the broader prescriber base, given the fact that we will have IV and PFS. So I would think about it as continuing to maintain our momentum and continuing in line with our strategy of earlier-line and broader prescriber base. Thanks for the question.

We'll go next to Joon Lee at Truist Securities.

Hey. Thanks for the update. Thanks for taking our question. For the no-go decision on myositis by year-end, are they all coming at once or one by one? And if spatitimab works in one but not in the other myositis subtypes, what would be some of the reasons for that? And what are you looking forward to learning from that to further enhance the trust of your future indications and maybe even reprioritize your existing pipeline indications? Thank you.

Yes. Thank you, Joon, for the question. Thanks for being with us. So in this basket trial where we combine three subtypes of myositis to go on a go decision point will all come at the same time. So we're synchronizing the first 30 patients across the three indications to make one decision. And remember that, this is an operationally seamless Phase 2 Phase 3 trial -- so whilst these data are maturing, we are actually already entering into the Phase 3 portion of the trial at risk. So technically speaking, the only decision we can make is a stop decision. And of course, the first 30 patients will be informative. So it will allow us to make stop decisions in 1, 2 or 3 of these indications, but it will also allow us to adjust sample size. -- took all 3 indications come out of the same argenx mold. I mean, strong conviction in biology, I think a responsible thoughtful clinical trial design, but not completely risk-free. So I think we did everything we could to design it and we mitigate it. So I don't think there's any specific read-through of a myositis outcome onto any other indication, which we have loaded into the pipeline because they also on the same blueprint. Thanks for the question.

We'll go next to Gavin Clark-Gartner at Evercore ISI.

Hey. Thanks for taking the question. A quick one on thyroid eye disease. Just wanted to confirm you're doing weekly dosing in the Phase 3s and also just ask how enrollment is going now that you're about 4 months in. Thanks.

Thanks for the question on TV. You're right that we in weekly dosing. We're doing that with the pre-filing already. And I think in a classical typical trade execution mode. So stay tuned on how the study is doing. We will keep you updated over the coming quarters. But we feel very strong about the opportunity and the traction we're getting with this global clinical trial. Thank you.

Next, we'll go to Andy Chen at Wolfe Research.

Good morning. Thank you for taking question. So -- this 450,000 pricing. I'm just curious if you can talk about how robustly this pricing can stay at 450 because as you have payer contracts, there's a natural pressure for ASP erosion. So, just curious if you can comment on the dynamics here. Do you see room for this number to go up over time in the next few years? Or do you think this is going to stay the same at 450? Or do you think this is going to go down? Thank you.

Yes. So Andy, thank you for the question, which I'm happy to take. So let me first briefly comment on the 450 number. That number, of course, did not come out of the blue sky. I think it is the result of a thorough understanding of I think the value proposition, which we have to offer a careful calibration of course, with payers, where we socialized the Phase 3 data with them -- and the data actually which resonates very well at base is to begin a function data can was already alluding to, and especially, I think the fact that the majority of the people who ended the trial shares bonds were able to leave the trial outside of OPTAVIA. These are pretty meaningful data, which represents significant value. We are now finalizing the paid agreements. So stay tuned. We also discussed during the call. Look, I cannot predict the future. I think it is fair to assume that with more competition and more indications, there may be some pressure on your price. But I think as a company, we are pricing transparently and responsibly. And I think we're very well equipped with our market access strategies to go into our future. Thank you for the question.

Next, we'll move to Joel Beatty at Baird.

Thanks and congrats on the strong growth from Q1. Looking back, what led to the weaker Q1 and how much of that was seasonal in nature, it would be expected to repeat versus any dynamics that might have been one-time in nature?

Yeah. Thank you for asking the question. I think we alluded to that in the prepared remarks, but Karen do you want to comment when we move through the optics of Q1 and Q2, for the real underlying strength of the businesses.

Yeah. Absolutely. When we look at the business, what we look at is, both underlying drivers of growth. So are we adding new patients consistently, are we moving early inline are we broadening our prescriber base. And we see those pretty consistently through Q1 and Q2. I would say both Q1 dynamics that you've seen across the industry, not just with VYVGART around reverifications, whether I'd say they're always going to be there. Whether they were worse in Q1, because the weather was worse in some parts of the U.S. or whatever you may have, I mean, I think we can all look back at that. But those Q1 dynamics are more, I would say, across the industry. So they've got performance and the KPIs, I would say it's pretty consistent throughout actually the 10 quarters of growth that we've had. And we would expect that to continue. Thanks for the question.

We'll take our final question from Douglas Tsao at H.C. Wainwright.

Hi. Good morning. Thanks for taking my question. Just a quick follow-up on ITP, I understand you think you have from a regulatory standpoint, an efficient way to move forward. I'm just curious, what feedback you may have gotten from KOLs as well as how you're thinking about the commercial positioning, just given the finding from the prior Phase 3 study in terms of the effect of low-dose steroids. Thank you.

I'm not sure we understood the question completely, because the line was breaking up. Would you mind that, if you recap your question, please.

Yeah. Sorry, can you hear me now, Tim.

Yeah. We can.

Okay. So I was just asking, so I understand you believe in ITP that you have an efficient path forward from a regulatory standpoint. I'm just curious in terms of how you're thinking about the product positioning, if it has changed prior to the prior Phase 3 results and what feedback you may have gotten from KOLs, especially in terms of the efficacy or the apparent efficacy of low-dose steroid. Thank you.

Yeah. We got it. So there is quite some expansion in the community about the data, which we generated in the clinical trial. In this effective patient population, which we are targeting and which we will be positioning third-line brand after steroids and PPOs in that patient population, not much is really working. And we showed a very high response rate and an unprecedented safety profile, and that is really important for the KOLs. They also continue to call us about, how well those patients were doing in the study, the ongoing open-label extension. So there was quite some move from the marketplace, I would say, for this product. And I think they were also very collaborative in helping us to think through the proposal we would make at vis-à-vis the FDA. So positioning has not changed, KOL feedback is very positive. And that trend some determination to go forward. Thanks for the question.

This concludes today's question-and-answer session, and today's conference call. Thank you for your participation. You may now disconnect.