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Operator
Greetings and welcome to the ARENIA Pharmaceuticals, Inc., third quarter 2022 earnings call. At this time, all participants are in a listen-only mode. A question and answer session will follow the formal presentation. If anyone should require operator assistance during the conference, please press star zero on your telephone keypad. As a reminder, this conference is being recorded. I would now like to turn the conference over to your host, John Wolfert, Investor Relations for ARENIA Pharmaceuticals. Thank you. You may begin.
John Wolfert
Thank you, Melissa, and thank you all for joining today's call and webcast to discuss ARENIA's third quarter 2022 results. Joining me this morning to lead the call are Peter Greenleaf, President and Chief Executive Officer, and Joe Miller, Chief Financial Officer. This morning, ARENIA issued a press release announcing its financial results and recent operational highlights and filed its quarterly report on Form 10-Q. For more information, please refer to ARENIA's filings with the U.S. Securities and Exchange Commission, which are also available on ARENIA's website at ARENIApharma.com. During this call, ARENIA may make forward-looking statements based on current expectations. These forward-looking statements are subject to a number of significant risks and uncertainties, and actual results may differ materially. For discussion of factors that could affect ARENIA's future financial results in business, please refer to the disclosures in ARENIA's press release and its quarterly report on Form 10-Q, along with ARENIA's 10-K, and all of its recent filings with U.S. Securities and Exchange Commission and Canadian Securities Authorities. Please note that all statements made during today's call are current as of today, November 3, 2022, unless otherwise noted, and are based upon information currently available to us at this time. Except as required by law, ARENI assumes no obligation to update any such statements. Let me now turn the call over to ARENI's President and CEO, Peter Veenlich. Peter? Thanks, John, and good morning, everyone, and thank you for joining us. On today's call, we'll provide you with a review of our commercial business, including LoopKind's performance in the third quarter and year-to-date. We will then provide our updated expectations for the remainder of this year. And since we now have three-quarters of results for 2022, we will also provide a preliminary review for 2023. In addition to commercial performance, we will cover ongoing medical affairs and clinical work to reinforce Lufthansa's basic benefits for patients. We'll then move on to providing an update on our global expansion efforts, R&D activities, and an update on our intellectual property. I'll then turn the call over to Joe Miller to provide more details on the third quarter and year-to-date financial results and our overall strong financial position. So let's get started with our third quarter business performance. Total net revenue for the quarter amounted to $55.8 million, which included a recognition of a one-time $30 million milestone payment for Matasuka to the achievement of the European Commission approval of Lucanus. Total net product revenues for Lucanus were $25.5 million for the quarter, bringing the year-to-date total for Lucanus net product revenues to $75.1 million. Total reported revenue for the 2022 fiscal year through September 30th was $105.6 million. Moving to more detail behind the financial results, total patients on therapy grew to 1,354 by the end of Q3, up from 1,274 at the end of Q2. The increase in patients on therapy this quarter was driven predominantly by improvements in prescription or patient SART form conversion rates and processing speed alongside of new patient SART forms. Our patient conversion rates on the drug at 20 and 30 days continue to improve quarter over a quarter. As of today, overall conversion rates at 60 days remain consistent with prior periods at approximately 84%. Consistent with prior periods, adherence remains strong at approximately 80% at quarter end. Looking at our patient start forms, we saw a slight decrease quarter over quarter, moving from 409 in Q2 to 374 in Q3. Looking at our most recent data for October 31st, PSS year-to-date were 1,357. These trends are clearly something we have been watching closely and have tactical actions to address. Our net realizable revenue per patient for Lufthansa's employer remains higher than our initial guidance of $65,000 per year. But as we discussed previously, we expect to approach this figure on an annualized basis as more patients go on and stay on therapy over time and as persistency, dosing, and payer mix evolve. What we have seen from our internal analysis of claims data is that several leading market indicators, including patient visits, new lupus nephritis diagnosis, and the number of patient renal biopsies declined from Q2 to Q1. Excuse me, from decline in Q2 versus Q1. These lower numbers foreshadowed a potential slowdown in the summer. For visits that did happen, we also saw a lower amount of proteinuria testing, which declined approximately 15% in Q3 versus Q2. These numbers, coupled with both doctor and patient summer vacations, resulted in an overall lower office volume and impacted our performance during the summer months in both rheumatology and nephrology offices. Our internal analysis leads us to believe that these market events are temporary, seasonal, or event-driven in nature. While we are currently digging deeper to better understand what impact this will have on a going forward basis, in the interim, we are driving tactical activity to power through these external market dynamics, which I'll now walk you through. First, let's look at our selling focus and healthcare provider-driven efforts. What we have learned throughout the launch from our highest prescribing physicians is that high-frequency engagement is required to adequately deliver the LUCONIS clinical message and gain solid clinical adoption. As a result, we're actively increasing our focus and frequency on high-potential decile 7 through 10 rheumatology and nephrology offices. We're setting clear expectations, tracking activity closely, and even increasing our incentive targets for our field team in these areas. We also know that physicians adopt at a greater rate when they see a sales representative frequently when they do that in combination with other program offerings. As a result, we are prioritizing peer-to-peer programs with an emphasis on smaller, more personalized engagements because we feel this better meets the needs of busy physicians and aides in advancing their understanding of the overall clinical advantages of lupkinase. We recently launched a new campaign directed at high-volume lupus nephritis offices late in June 3rd. This campaign features a new core message and powerful graphics centered on underserved patient populations. Based on early feedback, this campaign resonates strongly with our healthcare professionals. The campaign is currently in the hands of our sales force, and we will be updating our media and web properties as we move through the next couple of months and weeks. The campaign will also be a key feature alongside of our selling and medical efforts at these upcoming conferences, ASN and ACR, in the next few months. In addition to our current full execution, our medical affairs efforts related to Lucanus are crucial to driving growth. Over the past few quarters, we have generated significant visibility with healthcare providers with a substantial in-person presence at the major medical conference. We continue to submit new data from Aurora 1 and Aurora 2 for presentations at the conferences coming up, which include 14 abstracts accepted at Lupus, ACR, and ASN this year. While much of our marketing approach is designed to increase the depth and frequency of prescribing among our existing base, we also want to ensure that first-time prescribers have a meaningful experience with our product and through our Ready Alliance patient support team We continue to make seamless first-patient experiences with loop kinase a key priority. We can see direct evidence of our impact here in increased PSF approval rates as well as time to receipt of drug following initial prescription. Along with our sales and support team focus and intensity, we've also increased our focus on the patient. We've recently made enhancements to our brand website, loopkindness.com, to provide additional information for patients and healthcare professionals. In addition, we've enhanced and increased our focus directly and through online social media channels. In September, we began a new campaign with the Lupus Foundation of America directed towards lupus nephritis naive patients with a series of lupus walks across the country. The full campaign launched just last week and we plan to continue to grow this campaign as we move into 2023. While our existing anchor programs have always centered around patient, our efforts in advocacy and education, all of these continue. We, in addition, have a number of new programs that will launch over the next few months to help increase diagnosis, urgency of treatment, adherence and persistency all moving directly to the patient. Lastly, as we reported on previous calls, our payer access and approval rates are high. However, some payers still include administrative hurdles for patients initiating therapy. So just last week, we actually signed a contract with one of the largest national payers that will remove certain access hurdles to lessen the administrative work on our offices. It will also shorten the average time to first commercial fill and further enhance the prescribing experience for physicians and patients. Where we can drive the right motivation under the right terms, we will remain open to partnering with payers to ease access and also to speed conversion. Based on the third quarter revenue results and the PSF trend moments, as you saw in our press release, we're updating our 2022 Book Kindness Net Revenue Guidance to 100 to 105 million for 2022. In addition, with more than three-quarters of results for 22 now available, we are also providing preliminary loop guidance net revenue guidance for 2023 in the range of $120 to $140 million. This represents a 17 to 37 percent growth over the midpoint of our revised estimated guidance for 2022. In order to achieve this growth, This growth is expected to be driven by an increase in the number of quarterly PSFs, improvements in conversion time, solid persistency curves, and continued strong adherence. Moving now to our globalization efforts for Leukinus. In mid-September, in collaboration with our partner at SUCA, we achieved an important milestone as the European Commission granted marketing authorization of Leukinus to treat adults with active leucosnephritis. The authorization is valid in all EU member states, as well as Iceland, Liechtenstein, Norway, and Northern Ireland. Upon approval, we received a $30 million milestone from Atsuka and are eligible to receive additional regulatory and reimbursement milestones and low-definition royalties on net sales once launched. In the quarter, we began to recognize revenues for supply of product to Atsuka. which is reflected as product sales, as well as collaboration revenues for CMC and R&D support, both under a cost-plus arrangement. As a reminder, our updated 2022 GITNET product guidance, revenue guidance, of $100 million to $105 million does not include this milestone payment, any loyalty payments, or any collaboration revenue related to our agreement with ATSU for the market loop guidance in the European Union and Japan. Marketing authorization applications have been submitted in Great Britain and Switzerland, with approvals expected in the first half of 2023. As a reminder, pricing and reimbursement approval in three of the five major countries in the European market will trigger a $10 million milestone to Iridium. In addition, our work in Japan remains untracked. Upon approval, we would be eligible for an additional $10 million milestone related to and along with our double-digit royalties on net sales once launched. The ongoing clinical updates to Lucanus include the advancement of both the vocal pediatric study and the EnlightLN registry. With the registry, which we have just initiated at the beginning of the year, we now have 38 active sites towards our goal of having 17 total sites. As a reminder, we plan to leverage real-world data collected from this study to gain further knowledge about patients taking loop kinase and to help clinicians and payers improve patient care and ensure access to therapy. We remain on track to meet our post-approval FDA commitments. Moving on to our research pipeline, we continue to advance IND enabling work on both AUR 200 and AUR 300, and we continue to work towards submitting INDs for both compounds by the end of 2023. These are important next steps in the advancement of our pipeline, as well as to build long-term sustainable growth to the company. And finally, I'd like to provide you an update on our ongoing IPR inter-par case review relating to our methods use path. Since the VTAP instituted the IPR in July 26, we've been diligently working on our postal defense to the IPR. And this December, we and Sun mutually agreed to a two and a half week extension to each of our upcoming filing deadlines. With that extension, our FOLSA defense is due to be filed after market tomorrow. The defense will be substantively dispute all challenges raised by Sun in the IPR. The defense will be publicly available once filed, and we are confident the arguments that we are planning on presenting in that defense. There are a number of future steps to be taken in the IPR proceeding, including further filings and oral arguments, culminating in a decision from the PDAB being expected on or before July 26 of 2023. In the meantime, our patent infringement lawsuit against Sun Pharmaceuticals, in which we allege the infringement by Sun Pharmaceuticals of our patent related to Bacchus corn and not the Mountain Pathetic solution, remains ongoing. I want to emphasize that we remain focused on taking all initiatives to protect and strengthen our IT position as a company, including other patent applications relating to Lucanus that are filed and underway, which, if granted, could add and grant us additional patent protection for Lucanus. Before I turn the call over to Joe, as a reminder, inclusive of the Exupa milestone cash receipt, which was received on October 31st of 2022, we now have approximately $400 million in cash on our balance sheet. This means that we are well capitalized, and we have a great drug that we believe in will eventually become a profitable franchise. In line with this updated outlook, we intend to prioritize our spend to drive sales of Gluconis and to allow the company to further invest in its current and future pipelines. I'd now like to turn the call over to Joe Miller for a more detailed review of our financial results, and then I'll return at the end of the call for a quick recap and to open up to any questions you might have.
Melissa
Joe? Thank you, Peter, and hello, everyone. At September 30, 2022, we had cash, cash equivalents, and restricted cash investments of $376.6 million compared to $466.1 million at December 31, 2021. As Peter said, this does not include the cash receipt of the $30 million milestone payment from Otsuka related to EC approval that was recognized as revenue in the third quarter. The company received this payment on October 31, 2022, bringing cash, cash equivalents, and restricted cash and investments at October 31, 2022, inclusive of the milestone, to approximately $400 million. We believe that we have sufficient financial resources to fund our current operations. which include funding commercial activities, including FDA-related post-approval commitments, manufacturing, and packaging of commercial drug supply, funding our supporting commercial infrastructure, advancing our research and development programs, and funding our working capital obligations for at least the next few years. Total net revenue was $55.8 million and $14.7 million for the quarters ended September 30, 2022 and September 30, 2021, respectively. an increase of 280% period over period. Total net revenue for the nine months ended September 30th, 2022 was 105.6 million and 22.2 million for the nine months ended September 30th, 2021. This represents an increase in excess of 375% year over year. Revenue growth for both periods is primarily due to the recognition of a $30 million regulatory milestone for Matsuoka following the EC approval of Loop Kindness in September of 2022 coupled with an increase in product sales for Loopkindness, which was driven predominantly by further penetration in the lupus nephritis market. Total cost of sales and operating expenses for the quarters ended September 30, 2022 and September 30, 2021 were $65.3 million and $65 million, respectively. Total cost of sales and operating expense for the nine months ended September 30, 2022 were $189 million, in comparison to $172.2 million for the nine months ended September 30, 2021. Cost of sales were $2.4 million and $254,000 for the quarters ended September 30, 2022 and September 30, 2021, respectively. Cost of sales were $4.3 million and $610,000 for the nine months ended September 30, 2022 and 2021. The increase for both periods is primarily due to an increase in product-related revenue A low margin contribution for collaboration activities with our partner Otsuka, coupled with an increase in our safety stock inventory reserves. Gross margins for the three months ended September 30th, 2022 and September 30th, 2021 was approximately 96% and 98%. Gross margin for the nine months ended September 30th, 2022 and September 30th, 2021 was approximately 96% and 97% respectively. Selling general and administration or SG&A expenses inclusive of our share-based compensations was $52.2 million or $44.6 million for the quarters ended September 30, 2022 and September 30, 2021 respectively. SG&A expenses inclusive of our share-based compensation expense were $148.9 million and $128.8 million for the nine months ended September 30, 2022 and September 30, 2021. The increase for the three months ended September 30th, 2022 was primarily due to an increase in professional fees related to corporate legal matters, an increase in travel costs now that COVID has normalized, and an increase in sponsorship and programs to support the commercialization of Loop Kindness. For the nine months ended September 30th, 2022, the increase also included higher salaries, incentive pay, and employee benefits. Non-cash SG&A share-based compensation expense for the quarters ended September 30, 2022 and September 30, 2021 was $6.6 million and $6 million. Non-cash SG&A share-based expense for the nine months ended September 30, 2022 and September 30, 2021 was $21.5 million and $19.2 million, respectively. R&D expenses inclusive of share-based comp expense were $11 million and $20 million for the three months ended September 30, 2022 and 2021. For the nine months ended September 30, 2022 and September 30, 2021, R&D expenses inclusive of share-based comp expense were $35.1 million and $40 million. The primary driver for the decrease for both periods was that in prior year, the company expensed a $10 million upfront license and accrued milestone obligation related to its AUR 300 program, which was partially offset by additional development expenses related to the AUR 200 and AUR 300 programs for the current year, period ending September 30, 2022. Non-cash R&D share-based compensation expense for the quarters ended September 30, 2022 and September 30, 2021 was $1.5 million and $1 million respectively. Non-cash R&D share-based comp expense for the nine months ended September 30, 2022 and 2021 was $3.5 million and $3.2 million, respectively. Interest income was $1.5 million and $106,000 for the three months ended September 30, 2022 and September 30, 2021. Interest income was $2.2 million and $420,000 for the nine months ended September 30, 2022 and September 30, 2021, respectively. The increase in both periods is due to higher yields in our investment as a result of increasing interest rates. For the quarters ended September 30, 2022, ARENIA recorded a net loss of $9 million or $0.06 net loss per common share as compared to a net loss of $50.3 million or $0.39 net loss per common share for the quarter ended September 30, 2021. For the nine months ended September 30, 2022, ARENIA recorded a net loss of $82.1 million or $0.58 net loss per common share as compared to a net loss of $147.6 million, or $1.15 net loss per common share for the nine months ended September 30, 2021. With that, I'd like to hand the call back over to Peter for some closing remarks. Peter?
John Wolfert
Thanks, Joe. As you heard throughout the call, we faced a number of challenges in the quarter, but we continue to remain optimistic on the overall opportunity. We're focused on delivering LUCAS to patients in need, driving revenues in the U.S. globally, and we continue to operate with a healthy balance sheet, which will enable us to execute on our long-term strategy, including the advancement of our pipeline programs and the potential for opportunistic business development. We look forward to keeping you updated along the way. I want to thank everyone again for joining us today. We'll now open up the call for any questions. Operator?
Operator
Thank you. At this time, we'll be conducting a question and answer session. If you'd like to ask a question, please press star 1 on your telephone keypad. A confirmation tone will indicate your line is in the question queue. You may press star 2 if you'd like to remove your question from the queue. For participants using speaker equipment, it may be necessary to pick up your handset before pressing the star key. In the interest of time, we ask that you each keep to one question and one follow-up. Thank you. Our first question comes from the line of Mari Raycroft with Jefferies. Please proceed with your question.
Mari Raycroft
Hi, good morning. This is Farzeenat from Mari. Your sales expectations are low for the rest of the year, and even a modest increase in the 2023 guidance. Can you provide more specifics on assumptions behind the guidance? And maybe, Scott, I don't know if he's on the line, but any strategic initiatives he can take to basically get to boost traction at the major medical centers and turn things around?
John Wolfert
Yeah, so let me start with the run rate to end the year and then sort of bridge that into guidance for next year. I think if you look at the PSF number that we've reported through the month of October, that gives you an idea of sort of how we're seeing current trends in terms of patient start forms, which, as I've said previously, I think the best way to think about patient start forms in the quarter is to knock on effect to the next quarter and beyond. And as you'll see for patient start forms year to date, we reported a number through October 31st of this year that shows that we were under 100 patient start forms for the full month of October. two full months ahead of us, and we are starting to see a pickup on our dailies. But what I can tell you is that that was a big factor, that alongside of some of the more macro trends of lower office visits, lower patient diagnoses, lower urine screens, that led us to more modest growth into 2023. The year-end number is pretty much the die is cast on. We saw the numbers of PSFs all the way through Q2 and Q3, and I think the year-end number is indicative of that. And And it's kind of that simple. We've got two more months left of sales to report here in the months of November and December, obviously. And, you know, we felt we had a good bead on exactly where those months were going to come out. We felt it was going to fall in the 100 to 105 million range. In terms of your question on activities we can do in the major medical centers, this is somewhere we've continued to put time and intensity against. And what I would tell you is we've looked at everything from a targeted approach with specialized representatives and reimbursement people and medical affairs efforts. I think the sales process in these major medical centers is longer. And as you know, during the entirety of COVID, these major medical centers were locked down and many remain to be fairly locked down in terms of access. But it is a key priority of ours. And when we start to see some significant movement in these centers, we will update you accordingly.
Mari Raycroft
Thank you.
John Wolfert
Thank you, operator. Next call.
Operator
Our next question comes from the line of Ed Arcee with HC Wainwright. Please proceed with your question.
Ed Arcee
Hi, good morning. Thanks for taking my question. Joined a bit late, so I may have missed it, but I just wanted to ask about the driver of the lower PSFs, the lower diagnoses, the lower patient visits you just mentioned. I'm curious, really what's driving that because um i don't really i don't really think um hovid is an overwhelming driver at this point um certainly for third quarter i'm just trying to get at what specifically uh is you know impacting those relatives who say the second quarter and then separately uh just wondering about the um precedential opinion panel denial um you know, if there's anything you can say about that and the defense filing that you're filing tomorrow and the deadline that was set for that. Thank you.
John Wolfert
All right, so let me try to give you my best articulation of, you know, what we're trying to figure out as the driver of these lower diagnosis, not pegged to COVID. I mean, I think in the first year of the launch, we clearly reported that we were seeing lower office visits and lower rates of diagnosis of lupus nephritis due to COVID. And then we saw some slight recovery. And we're taking this from internal claims data. So we buy claims and we go back and we look at those claims and we're in the net offices and, you know, that's where we're driving these numbers from. So we saw some recovery. But then towards the summertime, leading into the summertime, so from Q1 to Q2 and then Q2 into Q3, we saw a more steep decline in both diagnoses, urinalysis within those data claims, and renal biases. While we don't know concretely, Ed, some of this effect we think is just sort of, I don't want to call it summer seasonality, but there is some effect of patients going on vacations, doc going on vacations, office staff going on vacations. Because we've seen this now two years in a row. Last year it was the Delta variant that we believed was the major driver. And this year, obviously, we don't see it as a COVID-related issue, but we do still clearly see that, you know, in the summertime, there is a effect happening to our patient population as it pertains to the regularity of their visits and obviously the lab work that they're doing when they're in there. As we continue to learn more about this, we'll report a revival in the number of PSFs we're seeing, at least the rate of the PSFs that we're seeing moving into October, end of October, and then generally November. So there's some encouraging signs there. And as we continue to track that data in terms of claims, when we have a view of sort of end Q3 into Q4, appears to have happened. It appears to have affected other drugs as well, and the meth and other drugs that we track. And the summer period is the best we can peg it to. Your second question was around the IPR. And as I mentioned in the call, we in SUN agreed to an extension to the date for the filing of the initial response, both from us and from SUN, to Friday of this week. So in order to get all of our expert witnesses, witness work done and everything we needed to do, we wanted to take the time to get a submission in by Friday, which is the due date. So the expectation should be that it will come after market tomorrow. And that's on clock with the filing and the issue of approval of that filing about a month back, I believe. And then your last question was on the denial of the review. As normal or re-reviewed, as normal course of these go, obviously when the PTAB decided to take up the review, the challenge or the company who's being challenged has the ability to go back to the PTAB and challenge that decision, which just about everybody does. But the success rate on those challenges is actually quite low. And we've been guided by our lawyers to have a low expectation there. It is not a fulsome response. The fulsome response you will see go in at the close of business or after market tomorrow.
Ed Arcee
Okay. Great. Thank you for that. One more follow-up, if I may. Just wondering what trends are you seeing recently or currently with persistence on patients existing on therapy?
John Wolfert
Well, through 12 months, which is, you know, probably the best number to look at. You know, we reported six months, nine months, and 12 months. That 12-month number was 50%. So it's clearly an area we want to continue to work on, but when you benchmark that versus other chronic therapies in both lupus, so if you look at Benlista as an example, or if you look at other RA therapies, to have a rate of 50% at 12 months is actually quite good. And I underscore, but we're not settling on that. We have data that shows patients continue to show, you know, consistent reduction in their proteinuria out to three years. And this disease is, from what we know about the guidelines and the data, is not one that should be treated sporadically or on a flaring basis. We're not accepting, you know, that number, and we'll continue to work on, and we think we have the data to be able to work on persistency. But the answer is 50% at 12 months. Great. Thanks, Peter.
Ed Arcee
Appreciate it. Thanks, Sid.
Operator
Thank you. Our next question comes from the line of Stacy Coop with Cowan Company. Please proceed with your question.
spk02
Thanks. So the first question is a bit of a follow-up on the last one. For 2023 revenue guidance, taking that midpoint of 120 to 140 for next year, and assuming roughly 80,000 per patient for the year, that would imply that you need to capture over 3,000 patients next year with that discontinuation rate of 50%. We are making a lot of broad assumptions, including pricing and these calculations. So can you just help us understand where assumptions might be too conservative or too optimistic, where you might have more conviction, and where there might be a little bit more variability. So that's the first question. And then a follow-up. Based on that persistency of rates, can you just provide more commentary on the average durability of what kind of use? Is this being used more in induction versus maintenance? Just help us understand where that 50% discontinuation rate is coming from. Thank you.
John Wolfert
So let me start with your first question, which centered on how we should be thinking about the 120 to 140 guidance. As I said in the call, we're factoring on prescription star forms, yes, persistency, yes, speed to improvement, yes. But I think you could see any one of those metrics do better than the other in order to get to these numbers. Right now, we need to see a significant improvement in our patient star forms, for sure. But to say that we need to add 3,000 new patients at 80,000 a year I think is probably – I don't know if I would say that's aggressive. I mean, it's all based upon how you're individually forecasting all the other parameters. The assumption that we continue to see improvements in getting patient on drug, getting them on drug quicker, working any backlog of patients are all in there. And in terms of what the average net per patient is, as we've said, we think it's probably better to be more conservative towards the 65 to 70,000 net per patient per year. Joe, am I missing anything there?
Melissa
No, Peter, I think you got it, captured it fairly well.
John Wolfert
And I apologize for asking, since you went through several questions there. Can you jump to the, and repeat the questions?
spk02
Yeah, so based on that 50% persisting rate, just
John Wolfert
more commentary around the average durability of lupinus use where you where you think the stroke is being used more induction more in maintenance just help us understand that 12-month uh assistant rate well as we've reported in the past and i don't think there's a lot of uh change here there's we get when a patient discontinues drug we try to or you know a patient's not just discontinues, but over time falls off drug, doesn't take a shipment, decides not to refill a prescription. We have a pretty bespoke patient support and physician support network called the Reading Alliance. So we follow up with the patient, we follow up with the physician, and what I can tell you is we get a broad range of reasons. They're always doc and or patient-driven, and the majority, I would say, are usually patient-driven, and they're across the board, everything from patient-driven you know lost a follow-up to patient decided to stop taking the drug no answer to patient could it could not tolerate the drug anymore it's just a broad broad range we're not seeing much from physicians in terms of them telling us that they have a belief that they should stop therapy at 12 months but um when a patient's proteinuria gets down to a level At times, it appears that physicians have a tendency, some physicians, to discontinue drug at 12 months, all of which we have data to support why a patient should not discontinue drug and why a physician should not discontinue drug. The guidelines work in our direction here. The Aurora 2 data is, you know... in our favor here in terms of the results. So we do think we can continue to make headway there. It is part of our primary messaging. But the reasons for patients coming off drug on average 50% after 12 months are a broad, broad range of reasons.
spk02
That's very helpful. Thank you.
Operator
Thank you. Our next question comes from Joseph Schwartz with SVB Securities. Please proceed with your question.
Joseph Schwartz
Hi, thanks. So you've given us some patient prescription data, and I was wondering if you could give us some insight on how the number of prescribers has been trending. Are you hitting a wall with the prescribing audience and not broadening it as much as you need to? Can you talk about how the prescriber audience has been trending lately and what is your strategy there?
John Wolfert
Yeah, well, the strategy clearly, as I mentioned, is to go after the high decile. These are the docs that we know have a large number of lupus and a large number of lupus nephritis patients. And within that subset, a large number have already prescribed. But let me give you the, you know, the total prescriber number to date through the end of the quarter was about 1,600. And that's off of a fairly large base of rheumatologists and nephrologists. So you should deduce, although on a semi-diluted basis, because our 7 to 10s are really where our focus are. When you start going down to your 1 through 6s, you're talking about docs who have very few patients. So your effort gets spread really thin. But we still do think there's opportunity over time to increase our overall prescriber base. If you look at those who have prescribed, only about, I believe the number is 45% have been repeat prescribers. 55% of that number have given us trial. So they've tried the product, but they have not become repeat prescribers. We think that's a huge opportunity too, Joe, going after those physicians who've had experience, had good experience, and getting them to re-prescribe the product. I think your next follow-on question will be, well, if a physician tries your product, why have they not, you know, prescribed it again? And I think, you know, while there's, you know, lots of reasons underlying, I think the most prominent one is probably that these physicians gave us one of their tough-to-treat patients right out of the gates. and they need to be more clinically sold over time. So that's why our concentration is against those physicians and will remain there. But 1,600 and a high concentration on 7 to 10 deciles. Our growth rate in a total number, as reported last quarter, was 100 new physicians. I'm not sure what it is for this quarter, but we can get back to you on that.
Joseph Schwartz
Okay, thank you. And then I guess... why isn't there more urgency for, especially when they have a new tool?
John Wolfert
Joe, we're losing you. We can't hear you on this end, Joe.
Joseph Schwartz
Okay, let me try again. So, in general, why isn't there more urgency for physicians and patients to treat LSD in general, especially when they have a new tool to do so, and how much control do you have over this phenomenon? It's not a small market, so even if it's decelerating overall, I wonder why you aren't able to make more interest if you don't have relatively low market penetration.
John Wolfert
Yeah, so we lost you on the end, but I think I got the gist of the question, so I'll repeat it for others on the call. I think the question centered around why does it appear that there's a low sense of urgency to treat aggressively and to make sure that patients stay on drug over time? You know, it's surprising to me in that all the data that's out there, Joe, and the published data and the guidelines speak to treatment urgency with treatment targets, and they're pretty open-ended about time to treat. Again, in the guidelines, they don't talk to treating flaring episodes. They talk to protein area treatment targets and that a patient's protein area should be maintained. What we're seeing in actual practice, at least through the claims data and the qualitative feedback that we have, is that There tends to be a desire to treat at very high levels of proteinuria, and that over time, that drug seems to be discontinued. Now, I'm not just talking about our drug. This seems apparent in both the use of steroids and in MMF as well. So they're not keeping patients, doesn't appear to us, they're keeping patients on MMF and steroids over time. The only thing I can compare it to is sort of past experience in other markets. And when we launched Infliximat back in gastroenterology back decades ago, gastroenterologists kind of did the same thing. They treated with a group of generic drugs, they treated flares, they were not aggressive with the therapies they use. And you evolve to today, And biologics are a mainstay. They're probably close to first line today, and they keep patients pretty chronically on these drugs. It took a long time to develop that market and to get physicians to change their treatment paradigm. And that's what I think we need to do here. There is an element of market development that needs to happen, moving physicians from what has historically been a very generic-driven, not data-driven, treatment protocol to one today where you have newly approved medicines operating on data and approvals that need to shift that mindset. And on the patient side, I think it's going to take education to make sure they understand that if this is not treated aggressively, that it can cause, and this is data-driven, patients to have kidney failure, patients to lose kidneys, patients to have a higher increase in likelihood of of death and further morbidity, not just with our drug, all drugs. So aggressive treatment and continuity of treatment are critical. My answer is market development is going to take time. How long will it take? You know, and the why, I think our market research shows that there's just this, you know, this physician, you know, comfort that we need to continue to break through.
Joseph Schwartz
Okay, thanks for those insights. And maybe if I can ask one more related question about your new marketing campaign. It's clearly, you know, designed to be impactful. Why did you design it the way? So my question is, why did you design it this way? And why do you think it will go far?
John Wolfert
Yeah, you're falling out on us again, Joe. And let me recap, and you can just yell yes back. But I think you asked why we evolved the campaign to where we have today. And maybe ask why, you know, we didn't have that before. I didn't get the back end of the question. But I think what you're driving at is why did we evolve the campaign?
Joseph Schwartz
That's essentially it.
John Wolfert
Okay. Well, you know, listen, our data is strong across all patient types first. But our data is extremely strong in subtypes of African American patients and Hispanic patients. And, you know, the majority of the patient population is African American, Hispanic, and female. So I think what we've tried to do in our most recent is update our campaign with all data available to target it very much towards the majority of the patient population and to use the most impactful data that we have, which at launch, of course, we didn't have the Aurora 2 data. And, you know, coupled with the Aurora 2 data, this message is having strong resonance. We're putting a lot of discipline down on utilization of the tools, getting in the offices, consistency of the offices, et cetera. Not to say there was an emphasis on that at launch. There was, but we're just taking it down to the next level of discipline.
Joseph Schwartz
Thanks for the color.
Operator
Thank you. Our next question comes from the line of Ken Cacciatore with Cow Wing Company. Please proceed with your question.
Ken Cacciatore
Hey, team. Thanks for taking a second question from Cal. And I was late getting on. I know Stacey asked the question. Peter, I wanted to talk about the IPR challenge and the challenge in general from Sun. It strikes us that they don't have much to win here. And I know there's two different litigations here. You're suing them. They're suing you on lute kinase and you're suing them on the ophthalmology side. But if they win, if Sun is able to win in this IPR process, they haven't certified paragraph four. I don't believe they can until the patent expires in 2027 or comes closer to that. And I think they have a few more years before they can certify against any other patents. So what I'm asking and trying to get to is why is this even happening? Shouldn't kind of business folks be able to reach an agreement that makes sense when there's really not much of a win here if Sun is able to do it? So when in the IPR, you also are struggling, obviously, with the size of the product. So even if there is a quote-unquote win, it can't launch for a while. The size of the product is struggling. Can you just help us understand, you know, why this is persisting and why we can't come to some kind of reasonable settlement amongst the parties? Thanks so much.
John Wolfert
I guess I'll start with... Yeah, your conclusions are not inaccurate. I mean, the product has protection under method of use through to the benefits of approval and with the hopeful addition of you know pediatric extension work we're doing out to 2028 so you think strategically and you say well you don't have an and on file you don't get 188 180 days first mover advantage you just nullify a pack in a market that you don't necessarily know even what the size is going to be she just doesn't sound like a very good entry strategy or that the filing has anything to do with generic entry i think we've said from outset that we think this is retaliatory and that we have ongoing litigation and all i can tell you is um And that we're keeping all options open to ensure that we extend the longevity and the strength of these facts, period. And we're business people, so I think you can sort of see that all options means all options. We do think it's important to get our defense out there in the public domain. To the challenges that were presented. So that's somewhat purposeful. But our goal is not different from your conclusion, which is we would like these challenges to get resolution. I think Sun's probably in the same place. And we want to give confidence to our employees, our investors, our physicians and patients that, you know, this product has patent protection over the long haul. So agreeing with your strategic goals. questions about the why, and leaving you with the message that we're keeping all options open to extend longevity, but that this Friday filing is important to get on the record so people see what our primary defense are. And don't forget, we also have track one patents on file with the PTO that if issued could give us even more rank fencing around that method of use patent.
Ken Cacciatore
Great. Thanks so much. Thanks again.
Operator
Thank you. Our next question comes from the line of Justin Kim with Oppenheimer & Company. Please proceed with your question.
Justin Kim
Hi. Good morning, and thanks for taking the question. Maybe just one. As you try to understand better this dynamic of finite versus chronic treatment with loop kinase, Just curious if the team plans to give longer-term metrics with persistency as it becomes available. Just wondering, are we going to go down the 15, 18, 21-month persistency rates in the coming quarters?
John Wolfert
Yeah, all I can say is that we are benchmarking that and we sort of think in a forecasting way the same way you would. which is we take the data that we have, i.e., the data we've reported, and we're not holding anything back here. I hope investors see that we're being transparent, probably even more so in some cases about the metrics that we're driving in the business. So there's nothing that would hold us back from reporting, you know, 18 months and beyond. But in lieu of doing that and having any data, we've barely been on the market 18 months here. we use other analog products and you know lupus and lupus nephritis are different um but we do look at ben lista and we look at products in the rheumatoid arthritis category and other arthropathies and we look at ms and you know chronic diseases that have a level of acuity That doesn't necessarily account to if you don't take drugs, you know, you die. But if you don't take drugs, you have more morbidity like diseases and see what we should be benchmarking against. So if you look at our benchmarks, 50% persistency at 12 months is actually quite good. But if you look at the data we have and the guideline expectation, to me, they fall quite short of that. So we're not accepting it, although we look at other analog products like the anti-TNF class, for an example, in rheumatoid arthritis and say 50% is actually not doing that bad. It's actually quite good. So we forecast it based on analogs, and we'll report it when we've got it.
Justin Kim
Okay, great. Thanks so much.
Operator
Thank you. Our next question comes from the line of Sahil Dhingra with RBC Capital Markets. Please proceed with your question.
Sahil Dhingra
Hi, good morning. Thank you for taking our questions. This is Sahil for Doug Mead. I had one question on the October PSF. So I think the monthly run rate for Q4 is currently 1.13 versus 1.25 for quarter three. I understand there was some summer seasonality in Q3, but why is October PSF run rate running below the monthly run rate of Q3? And then my follow-up question is, for the guidance for next year, what kind of PSF run rate are you building in to achieve that 120 to 140 million? Thank you.
John Wolfert
Well, we've not... So I'll answer the last question first. We've not actually given guidance on forward-looking PSS, because there's variability in a court, right? You can see our financials came through, maybe not where we wanted them, but they were carried through in a way where, you know, persistency and speed to getting patients on drug and the backlog of drug and conversions drove a lot more than in the quarter did PSS. So, you know, given the PSF projected forward, I think would give us a false sense of accuracy because if you had one fall off on the other, you might not make a quarter. So all things have to work in harmony. Your question on October, I think, is, you know, Well, I can give you answers that go backward and look at coming off of the summer. I can tell you that, and we didn't report on this in the call because I don't want to just run through a list of excuses. We are seeing the trend move upwards in the most recent weeks. But don't forget that our highest performing region out there in the country is the Southeast region. And, you know, Florida gives us somewhere between, I don't know, a measurable number, call it mid to high single digits per week of PSFs. And the state of Florida has been pretty shut down because of Hurricane Ian. So I think that could be one factor that's there. The current coming back online numbers are leading me to believe that we're powering through that. So that's the only thing I can say that specifically could have impacted October.
Sahil Dhingra
Okay, thank you. Can you please remind me of the milestone payments that are expected?
John Wolfert
Can you repeat the question?
Sahil Dhingra
Can you please remind me again on the milestone payments? So I think there's one for Japan and another European country that was mentioned earlier in the prepared.
John Wolfert
Yeah, upon approval. So we just received a $30 million milestone on approval with the European Commission that's received and banks in the quarter. The next would be when we get three major countries out of the five top European countries, with approval and pricing reimbursement. That's another $10 million. And then there's a $10 million approval milestone in Japan. And then coupled with that, and we estimate, you know, hopefully that, you know, you're somewhere in the 24-time period for that approval. We have to file there in Japan, and we have to get approval. So in addition to that, we have a cost-plus manufacturing arrangement. And we have a royalty rate that we glean in those markets as well.
Sahil Dhingra
Sorry, just one follow-up. What's the timeline for the European $10 million?
John Wolfert
It's very dependent, country-specific, so we've not given a guide on that.
Sahil Dhingra
Okay, thank you.
Operator
Thank you. Our next question comes from the line of David Martin with Bloomberg. Please proceed with your question.
David Martin
Thanks for taking my questions. The docs I've talked to tend to say that if a patient's nephrotic, they'll choose Leukinus. If the patient is fatigued, they'll choose Benlista. I'm wondering if that's how you see it shaking out as well, and what proportion of these lupus nephritis patients are nephrotic and which ones are fatigued?
John Wolfert
Well, I mean, to answer the question directly, if a patient's fatigued, they have lupus, and if a patient's showing persistent proteinuria, they have lupus nephritis. So I'm not surprised by that answer. I don't know that I have a most recent view on how docs are selecting one versus the other. I can tell you that, and you can look and ask the folks at GSK this, they're positioning the product as a lupus product. And they're talking about kidney health in lupus patients. So the goal there is clearly to get patients before they ever become patients with lupus nephritis. We're positioning the product for what we're indicating, which is for lupus spraeus. I don't have any specific data on are we getting a higher perpuria patient than banglista. That I don't know. I can't go to buy their product. So the opportunity we have ahead of us is to start to get in front of, you know, just those patients that have already seen a course of MNF and steroids. Okay.
David Martin
Next question is, how much competition or how much sales do you see going to other calcium urine inhibitors? And how important is it to emphasize the lower nephrotoxicity with leucinase. And can you really do that before you get the biopsy results from Aurora? And when should we expect those results?
John Wolfert
Well, the only data that we have to date, and it's very strong data since we're the only ones who've reported data out this long, is the data to look at kidney function as it relates to EGFR out to three years from the Aurora I and to the Aurora II extension study, which shows no degradation in terms of kidney function, at least as measured by EGFR. Do we think we're losing patients based upon this fear of nephrotoxicity? I don't see it in the data, the market research that we have right now. There do seem to be a group of physicians, nephrologists primarily, who have a strong opinion about that. but they're a small percentage. And the overall utilization of calcium urine inhibitors, according to our data, that being cyclosporine A intact, is actually quite low, less than 10% of overall lupus nephritis patients. So while I think we compete there to a degree because we're part of a class, if we're only growing there and we're only competing there, it's a small market opportunity. So I think we need to think and look bigger. Your question on the data for biopsy data is, remember we had a sub-study from the original Aurora study of a very small subset of patients that we actually did do, I believe, serial biopsies on, and then those biopsies were then reviewed by a central lab, an outsourced central lab. Two caveats, David. Super small from what I understand, and I still do not know exactly what the readout time period. I know that the central lab continues to work on this, and they're looking at the pathology work, and then they have an oversight that's looking at their work as well. So I don't have a definitive date for you, but I will underscore that it is a small end. And the reason it's a small N is because most patients, it's a difficult task to have a patient opt in for an invasive procedure as part of doing a clinical trial.
David Martin
Got it. Got it. One last quick question. When patients discontinue Leukinus, does the proteinuria rebound rapidly or does it pretty much stay where it is, maybe rebounding slowly?
John Wolfert
I don't have a data-driven answer from our studies because I don't think we tracked it. And I would hesitate to give you, because I'm not a practicing clinician, what I see in practice. All I can tell you is we don't track it. But what we do know from the claims data we have is patients do cycle. It's just very variable across. So if they do flare again, they do get retreated.
David Martin
Okay. Thanks.
John Wolfert
Thanks, David.
Operator
Thank you. Our final question this morning is a follow-up from the line of Maury Raycroft with Jefferies. Please proceed with your question.
Mari Raycroft
Hi. Thank you for taking our question again. So you talked about the two patents, like additional patents around fence, to build a fence around the look-tenders. Can you be more specific on what those patents are related to, and when should we expect those to be granted?
John Wolfert
So the two patents on file, I believe, have an April action date, or at least one of them has an April action date. They're ongoing. They center around two major areas. One is... modifications and addition of new data and adjustments to the 036 patent. So think about that as an evolution of the 036 patent. Matter of fact, I think that patent addresses many of the challenges that are centered around So the sun challenge, while we think there's a lot of invalidity to them, new data and further enhancement through that could potentially be beneficial. The second is our new data claims, which, you know, I can't really get into here, but the patents issues we'll be more than happy to talk about.
Mari Raycroft
Okay, thanks.
Operator
Thank you. Ladies and gentlemen, that concludes our question and answer session. I'll turn the floor back to Mr. Greenlee for any final comments.
John Wolfert
I want to thank you, everyone, for joining us this morning. We appreciate your time and your support, and we look forward to reporting back to you as we continue to progress through the launch over the next couple of months and quarters. Thank you very much.
Operator
Thank you. This concludes today's conference. You may disconnect your lines at this time. Thank you for your participation.
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