Yaron Werber
analyst
Very pleased to be here and to update you -- presentation. Just trying to retreat the slides. So very pleased to be here and to tell you about our progress at Vor Bio. Thank you. I'll be making forward-looking statements during this presentation. This is our disclosure slide.
At Vor, our ambition is to significantly improve the standard of care in autoimmune disease. And for doing that, in 2025, in June, we in-licensed one of the most exciting opportunities in autoimmune, a late-stage asset called telitacicept. Telitacicept comes from the China biotech innovation engine. It's RemeGen, our partner there, who has developed this asset in a series of late-stage trials that I'll talk about in a minute.
And the great thing with telitacicept is that it has a very uniquely designed and differentiated profile. It's a BAFF/APRIL inhibitor, as Yaron alluded to, which has the ability to tackle the upstream and the downstream of the B-cell lineage. And with that, it remodulates the immune system without B-cell deep depression and unnecessary immune suppression. So this elegant mechanism has applicability in a series of autoimmune diseases, and it's been very well characterized in the RemeGen late-stage clinical program in more than 8 indications.
There is an impressive list of Phase III trials in the major autoimmune diseases and some at the forefront or in the white space like Sjögren's disease. We'll tell you more about that. So it's clinically validated, which is extremely precious for us. And it's also de-risked on the safety side because it's commercially available in China. It has been administered to tens of thousands of patients there commercially in several indications.
We have selected 2 indications for our global first trials. It's myasthenia gravis and Sjögren's disease. They are 2 very different diseases and opportunities, but they are both sizable and with unmet medical needs. And we think we can compete very effectively and provide great advances in these indications and achieve blockbuster status in these indications, obviously.
There is more than that, but we stay very diligent in our capital allocation. There is more than that with a series of autoimmune B cell-mediated disorders. In theory, telitacicept can cover most of them, if not all of them. We'll address that in time with the right discipline.
We have a healthy balance sheet with $450 million, which gives us the runway until mid-2028 and the mean for our midterm catalysts, especially our global Phase III. So a great opportunity I'm going to tell you more about now. And I should also say that we reentered the company completely mid-'25 around this asset with a brand-new team of experts, great talents who have been executing on turbo boosting our Phase III trials. And preparing for the launch because the MG launch is not so far.
Let me tell you more about the modality or the mechanism of action of telitacicept. BAFF and APRIL are 2 key cytokines in the B-cell lineage pathway. They are important for the development, the maturation and the survival of B cells. By blocking BAFF and APRIL selectively, telitacicept inhibits the abnormal development of the hyperactivated B-cell clones and it reduces the secretion of autoantibodies. So by acting on BAFF and APRIL on the upstream and the downstream, it basically remodulate the immune system without, again, deep B-cell suppression, which allows the immune system to function against pathogenic agents for instance.
So this elegant mechanism or modality has a great applicability because you don't need to interrupt treatment time to time to help the system to restore and you can treat chronically and in a very reliable way on the long term. In these diseases, the patients need to be treated chronically and on a regular basis. That's very important.
I mentioned the impressive clinical program, late-stage program from RemeGen on telitacicept. And it's been obviously well characterized here with a very consistent and clinically meaningful efficacy profile, 3 commercial approvals there in systemic lupus first and then rheumatoid arthritis and most recently, myasthenia gravis. 2 more BLA submissions late 2025 in Sjögren's disease and IgA nephritis. And it has achieved in at least 3 indications, best-in-disease status with the Phase III results. So a very compelling set of data, which give us a fantastic bearing point to select and carve our own global Phase III trials at Vor.
This is true for efficacy. The de-risking is also obvious for safety because tens of thousands of patients have been treated in China, either through the program or commercially. And the safety profile is very consistent and manageable. There is no burdensome vaccination requirements like complement inhibitors. There is no signature B-cell depletion associated serious adverse events like with depleters, CD20s and others. And there is in a consistent way, mostly mild-to-moderate adverse events observed in the clinical program and in the commercial endeavors.
So the safety profile is very important because it enables long-term treatment and chronic treatment in these diseases, which is extremely -- it's actually one of the most important high unmet medical need in autoimmune disease, the ability to treat chronically without having to do drug holidays.
This slide shows you the important and impressive list of clinical trials with telitacicept. There is a wealth of Phase III data between RemeGen in China and ourselves globally now. You see we cover a large amount of autoimmune indications, and it gives the picture of a true pipeline and a product opportunity with obviously multibillion dollar sales potential. And again, a strong cash position, which makes us -- which puts us in a very good position to deliver on these opportunities.
Now let me tell you more about myasthenia gravis, which is our midterm opportunity. And first and foremost, why did we select myasthenia gravis our beachhead indication? For mainly two reasons. MG, despite the fact it sounds busy as a market, is a sizable market. It is forecasted to be in excess of $10 billion of sales in the U.S. only by the end of the decade. And that's very much the case with most immunology or autoimmune indications.
Remember that atopic dermatitis was forecasted to do only a few billion dollars of sales. Dupixent product is probably going to top EUR 25 billion at the end of the decade. And it's only 1/3 of the patients treated by biologics. Same in MG. When the first FcRn was launched, nobody thought that it would be as important market at the end of the day. So we have a lot of playground here to increase the sales in this market.
Number two, there is still high unmet medical need in MG. The patients are treated by new agents, okay? But these agents don't fulfill all the needs, which are mostly about the possibility to treat chronically with a holiday break with a better safety profile. It's true for complement inhibitors, true for FcRns. And our agent, telitacicept ticks all the boxes here.
The China Phase III trial, which was communicated last year by our partner, RemeGen is extremely impressive in its results. The MG-ADL primary endpoint, placebo-adjusted results compared to the other agents on the market or being investigated show a very strong magnitude of improvement, minus 4.8 placebo-adjusted improvement here, which is almost double their agents at 24 weeks with a very consistent safety profile and very manageable.
But importantly enough, what is true at 24 weeks is even more true on the longer run. If you look at the open-label extension period, which is not 24 weeks in the China study, you can see that the MG-ADL score continues to improve and the patients continue to feel better and be better and do better. So again, this duration of effect and efficacy is extremely important because it leads to disease modification, which is probably the main unmet medical need in myasthenia gravis.
On the right hand-side, you can see that around 87% of the patients achieved MG-ADL absolute score improvement of 6, which is best-in-disease definitely very impressive. So these results are a fantastic opportunity for us to replicate that in our global Phase III trial, which we have started and actually are enrolling at a good pace.
You can see -- actually, I forgot to mention that in the Phase III trial in China, it's an important differentiating point of telitacicept versus existing agents like the FcRns, there is no need for drug holidays or breaks because you might know that with FcRn, you knock down the IgG by such a magnitude that you need the system to recover time to time. Otherwise, the patients don't have immunity anymore. You don't want to leave with only 10% left of IgG to fight your COVID or other agents. So that's why they have to stop and do a break and come back.
And during these breaks, beyond the fact that it's not convenient and obviously not very reliable, you expose your patients, especially in MG to myasthenia gravis crises, you can have acute episodes with life-threatening events. So that's not good. And with telitacicept because of the consistency of the treatment scheme and the mode of action, you don't need drug holidays. That's a key differentiating factor for us.
So I was going to tell you that our AMG global Phase III trial is enrolling very well. It's a very similar -- 180 patients, very similar protocol than the China Phase III trial, randomized between the active arm of 240 milligram of teli versus placebo and with an extension period. Here, we have made some improvements in the protocol, learning from the China study, trying to improve it, especially in the duration of the OLE. We've made it from 24 weeks to 48 weeks. And even with the opportunity for the patients to stay longer, depending on the patients and the physician wish.
So we really want to see that as a long-term opportunity. We believe this duration of treatment and of effect is key to study and that will add to our unique differentiating profile. So we have guided for readout of the top line results of this study by the H1 of 2027. So more to come, great opportunity in MG, well-studied indication, larger than thought with a great differentiating opportunity. And we'll keep you updated on our progress here midterm.
Let's pivot to the next white space, as Yaron said, I like the expression. It's not -- it's white space in the space that is probably the next frontier in autoimmune disease. This is an indication or a disease which affects more than 100,000 addressable patients in the U.S. So it's very large, and it's probably much larger than that. It's typically an underserved indication with no approved biologic modern treatment yet, which has underdiagnosed patients. And it's going to be larger than that, and the market will grow as with all these indications pre-biologic going to biologic era.
This is a much more complex disease than initially thought. It's usually traditionally mentioned as a dry eye, dry mouth disease affecting mostly female patients. It's actually multi-organ, multi parts of the bodies, joints, lungs, liver, skin with pain and fatigue, which are debilitating for the patients. They evolve in stages, and they end up with a very debilitating late-stage disease with very importantly, the prognosis, which can be very affected by the transformation into malignancies of these patients and insignificant portion of them transform into B-cell lymphoma, DLBCL, which is obviously a very different prognosis.
So that also underpin the fact that this disease is not only about purely just an IgG shutting down solution. It will be way too simple, which actually it has a deep B-cell origin, which you have to tackle in the upstream. So there are FcRn agents being investigated there, but we believe that our action, mode of action on the upstream has a very important relevance here.
So that's important to characterize the disease and spend a bit of time because it's new. People don't know it yet well. Even the physicians had to learn how to investigate this disease and study this disease and conduct the trials. It's very important, and we are at the perfect timing for our global Phase III. But first, let me tell you more about the incredibly impressive results from RemeGen.
At ACR last fall, they have presented their Phase III on [ 300 ] patients randomized into 2 active dose of telitacicept and placebo. and they have shown incredibly stunning results on the 2 key endpoints, the physician endpoint, ESSDAI and multi-domain and the patient endpoint symptom score ESSPRI.
Very important point in this study, these patients in China were clear of any background therapies. There was no steroids, no immunosuppressants. They were pure patients. So what you see is what you get with this study, pure patients and just the effect of telitacicept. It's a perfect proxy for us. We know that on the West, we will not be able to replicate that. We'll have to have patients with some background therapies, but we know how to control that. We learned that.
But here, what you see is the effect of telitacicept. And you see the incredible achievement at the high dose of 160 milligram, minus 4.4 ESSDAI placebo-adjusted improvement and minus -- almost minus 2 of ESSPRI, which is even more impressive on the symptoms. This shows you that it's true at 24 weeks, but it's also like for MG true in the longer run at the end of the OLE period. You can see that the effect -- the impact continues to improve, which shows, again, the potential of the duration of effect of the drug.
Another way to look at it is the -- if you take the percentage of patients achieving a certain amount of reduction in the 2 scores, 90% of the patients report improvement on their symptoms on the right-hand side of the chart here. It's very important. And usually, when the more than 1 point ESSPRI score is achieved, that's clinically meaningful. So the results are clinically meaningful and statistically significant. And we are the only ones having been able to achieve that.
If you -- so fantastic results. The KOLs actually are very impressed by that. And if you want to put in perspective with other agents, you see on the right-hand side of the slide, the Phase IIs available, the data available on the Phase IIs, us in dark blue and other modalities or products. You can see the magnitude of difference on the ESSDAI.
On the left-hand side, only 2 agents have communicated or published Phase III data. It's us and the BAFF receptor inhibitor. And you can see also the incredible separation of ESSDAI placebo-adjusted results, minus 3.8 for us, around something for the others. There is a placebo component, as you might know, in this, but it shows that when the study is well run, the results can be absolutely amazing with telitacicept.
And on that point, we have turbo boosted the start of our global Phase III trial in Sjögren's based on these remarkable results from our partner. We are in the position to announce that we will dose our first patient by the end of the first half. This trial will enroll 250 patients, randomized between active arm of 160 milligram of teli versus placebo during 48 weeks and will follow up for an extension period.
The endpoints will be ESSDAI, ESSPRI and a series of more investigational endpoints, which are very important to characterize the disease because it's an evolving space, again, the white space. There is also a need to accompany the stakeholders in this disease. I'm talking about the KOLs, the partnership, but also the regulators. And again, the timing couldn't be more perfect because others are just ahead of us to kind of clean up the path for approval for this disease.
So fantastic opportunity. And if we talk about business here for a minute, just MG and Sjögren's are multibillion-dollar opportunities for telitacicept. Sjögren's is very difficult to quantify right now because, again, it's a white space. There is -- there are much more patients that we don't know yet. And with our probably best-in-disease profile, we ambition to be definitely multibillion dollars with Sjögren's only.
I'm not talking in this presentation about potential other indications as signified by RemeGen, many others, but we will be disciplined. We'll think about that with time. But keep in mind that the blockbuster pipeline and the product approach is very tangible with telitacicept.
Now to conclude, we have, once again, one of the most exciting opportunities in autoimmune disease with a de-risked asset on the clinical and the safety side. We have 2 great opportunities, one well underway like myasthenia gravis and one where we are pioneering but with an incredible set of assets in our hands here. They are both multibillion dollars. And the midterm catalyst will be top line data for the Phase III trial in MG in the first half of '27. The global Phase III initiated for Sjögren's with the first patient dosed by the end of the first half, and the expansion opportunities that we work on in the next months and years with the right capital allocation discipline. Again, $450 million on the balance sheet, which puts us in a good position to fund our Phase IIIs and the runway into mid of 2028.
On that, thank you very much. And Yaron, open for the Q&A session.
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