Good day, and thank you for standing by. Welcome to the FibroGen's Second Quarter 2023 Earnings Call. At this time, all participants are in listen-only mode. After the speaker’s presentation, there will be a question-and-answer session. [Operator Instructions] Please be advised that today's conference is being recorded. I would now like to hand the conference over to your speaker today, David DeLucia. Please go ahead.

Good afternoon, everyone. Thank you for joining today to discuss our second quarter 2023 financial and business results. I am David DeLucia, Vice President of Corporate FP&A and Investor Relations at FibroGen. Joining me on today's call are Thane Wettig, Interim Chief Executive Officer; Juan Graham our Chief Financial Officer; Dr. Mark Eisner, our Chief Medical Officer; Dr. John Hunter, our Chief Scientific Officer; Chris Chung, our Senior Vice President of China Operations and Enrique Conterno, our outgoing Chief Executive Officer. Following our prepared remarks, we will open the call to your questions. I would like to remind you that remarks made on today's call include forward-looking statements about FibroGen. Such statements may include, but are not limited to, our collaborations with AstraZeneca and Astellas, financial guidance, the initiation, enrollment, design, conduct and results of clinical trials, our regulatory strategies and potential regulatory results, our research and development activities, commercial results and results of operations, risks related to our business and certain other business matters. Each forward-looking statement is subject to risks and uncertainties that could cause actual results and events to differ materially from those projected in that statement. A more complete description of these and other material risks can be found in FibroGen's filings with the SEC including our most recent Form 10-K and Form 10-Q. FibroGen does not undertake any obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise. The press release reporting our financial results and business update and a webcast of today's conference call can be found on the Investors section of FibroGen's website at www.fibrorgen.com. With that, I would like to turn the call over to Enrique Conterno.

Thank you, Dave, and good afternoon, everyone. First, I would like to take a moment to thank my FibroGen colleagues. Thank you for your commitments and dedication during my tenure as CEO. It is important for me to highlight that despite the setback we have recently faced, I remain enthusiastatic about FibroGen’s opportunities given our remaining near-term readouts from our pamrevlumab trials with duchenne muscular dystrophy and pancreatic cancer, our thriving roxadustat business in China and our exciting early-stage pipeline. Furthermore, we have a strong cash position that allows us to see through the evolution of our pipeline, as well as our talented team across the board. I am proud of the quality of our leadership team and delighted that Thane will be leading FibroGen as Interim CEO. I have known Thaane for over 25 years and have worked closely with him at FibroGen during his three years as Chief commercial Officer, and at Lily for about 10 years in his capacity as Chief Marketing Officer for Lily Diabetes where he launched several blockbuster medicines during a period of unprecedented growth of Lily’s diabetes business. During our times working together, I have appreciated his excellent judgments keen business instincts and ability to lead organizations effectively. So, without further delay, I’d like to pass the call to Mr. Thane Wettig.

Thank You, Enrique, for all that you have done for FibroGen over the past three years. You have built an outstanding leadership team, created the performance-oriented culture and built our early-stage pipeline and personally, I've had the benefit of working with you for the better part of the past 14 years at Lily and here at FibroGen and I will do my best to lead FibroGen toward a bright future. I'm personally excited about the opportunities we have in front of us to bring value to patients and create value for shareholders, many of which we will highlight in this call. Good afternoon, everyone, and welcome to our second quarter 2023 earnings call. On today's call, I will focus our stakeholders on the four strategic pillars that will guide the company into the future, as well as provide an update on our pamrevlumab and roxadustat assets. Dr. John Hunter, our Chief Scientific Officer will then review our exciting early-stage oncology pipeline, providing a perspective that we have not yet discussed in this type of forum. Lastly, Juan Graham, our CFO will review the financials, after which we will open the call for your questions. Starting on Slide 3, FibroGen has four key strategic pillars that we believe offers significant value today. First is pamrevlumab with three upcoming late-stage readouts starting this quarter and through the first half of next year. Each indication which I will walk through in more detail in the coming slides represents a significant commercial opportunity in diseases of substantial unmet need. Second is roxadustat. Roxadustat is approved in over 40 countries around the world generates significant net revenue and provides FibroGen with material and growing economics through our partnerships with AstraZeneca and Astellas Pharma. Third is our early-stage oncology pipeline. We recently completed the in-license of…

Thank you, Thane. Moving to Slide 23 our recently in-licensed clinical program FibroGen-3246 is an antibody drug conjugate for ADC comprised of an anti CD46, antibody YS5 linked to the anti-mitotic agent MMAE, which is a clinically and commercially validated ADC warhead. The CD46 episode targeted by FibroGen-3246 has expressed at high levels in a majority of metastatic castrate-resistant, prostate cancers and colorectal tumors and is also found at high levels in a subset of other solid tumors. Moving to Slide 24, FibroGen-3246 has demonstrated monotherapy clinical efficacy in multiple myeloma at metastatic castration-resistant prostate cancer. Shown here are interim data from the ongoing Phase 1 trial in prostate cancer, where four out of 21 evaluable patients had a partial response based on resist criteria and we're at PSA 50 response rate of 45% was observed. The patients in this Phase 1 study were heavily pretreated with a median of five prior therapies. The safety profile for FibroGen-3246 was consistent with other MMAE based ADC therapeutics with neutropenia being the most common adverse event. Additional data from the trial will be reported upon study completion. Moving to Slide 25, we show ongoing and planned clinical trials for FibroGen-3246. In addition to the Phase 1 dose escalation and expansion study referenced on the previous slide, there is also a combination study with enzalutamide that is currently being run at UCSF. The rationale for this combination is based on preclinical data demonstrating upregulation of CD46 in tumor cells following enzalutamide treatment, therefore potentially making them more responsive to treatment with FibroGen-3246. Initial data from this trial is expected in the second half of 2024. There is currently a PET biomarker study trial in progress for the program also being run at UCSF. The Pet Imaging Agent is comprised of the CD46 targeting…

Thank you, John. Good afternoon, everyone. I will jump straight into the quarter’s financial results. For the second quarter of 2023, total revenue was $44.3 million compared to $29.8 million for the same period in 2022, a robust increase of 49% year-over-year. I will now provide further detail on our revenue. As of Q2 2023, we recorded $23.9 million of net product revenue for roxadustat sales in China, compared to $23.3 million in the second quarter of 2022, representing an increase of 3% year-over-year. During the quarter, we also recorded $14.3 million in drug product revenue for roxadustat ball drug product or active pharmaceutical ingredient sold to Astellas. Comparatively, drug product revenue was $1.1 million during the second quarter of 2022. We recorded development revenue of $4.1 million associated with co-development efforts for roxadustat with our partners as compared to $5.2 million during the second quarter of 2022. As I have previously stated, due to the stage of development of roxadustat with our partners, we expect co-development revenue to be in the range of $3 million to $5 million per quarter for the remainder of 2023. Finally, we recorded license revenue of $1 million associated with a milestone payment from our biosynthetic cornea program with Eluminex. Given the strong performance around business in China, I will provide further context on our financials and performance. As previously mentioned by Thane, total roxadustat net sales from the joint distribution entity jointly owned by AstraZeneca and FibroGen or JDE was $76.4 million this quarter compared to $53.1 million in the second quarter of 2022, a substantial increase of 44% year-over-year highlighting the continued strong performance of the EVRENZO franchise in China, achieving our highest market share since launch of 39% of the ISA and his categories combined. From total roxadustat net sales in…

Thanks, Juan. In closing, we are committed to advancing pamrevlumab as a potential first-in-class medicine in three indications with significant unmet medical need and as noted, we expect top line data from the following three late-stage studies, phase 3, LeLantos 2, and ambulatory DMD this quarter; phase 3, LAPIS in LAPC in the first quarter of 2024; Phase 2, 3 Pancreatic Cancer Action Network or Pan Can’s Precision Promise trial in metastatic pancreatic cancer in the first half of 2024. Roxadustat continues to perform very well in China, where we recently filed our sNDA for the CIA indication and our partner Astellas continues with the commercialization of roxadustat in Europe and Japan. In our early-stage pipeline, we anticipate filing an IND for FG-3165, the anti-GAL9 antibody in the first quarter of 2024, filing an IND for FG-3175 our anti-CCR8 antibody in the second half of 2024 and the initiation of a phase 2 trial of FG-3246 for metastatic castration-resistant prostate cancer in the second half of 2024. We have completed incremental financing transactions to further strengthen our balance sheet and expect our current cash position to fund operations into 2026. I would like to thank all of the employees of FibroGen for their continued hard work and perseverance over the last few months. I would now like to turn the call back over to the operator for Q&A.

Thank you. [Operator Instructions] Our first question comes from the line of Michael Yee with Jefferies. Please proceed with your question.

Hi. This is [Indiscernible] on the line for Michael Yee. Thanks for taking my question. I think I have two questions if I may? First for roxadustat, could you help us understand the patent and exclusivity situation for roxa in China? And what is your base case for the timing of a potential generic entry? And what are the ways to extend the exclusivity? And then for 446, why are you excited about this ADC program? And I also noticed you have a Phase 1, well, there was a Phase 1 in multiple myeloma, so are you also pursuing the opportunity in this indication? Or are there any other indications that you are thinking about? Thank you.

Thank you for your question. The first part of it related to roxadustat China patent term exclusivity, a generic entry I'd like for Chris Chung to address that question. Chris?

Thank you. Thank you, Thane. Can you hear me?

Yes.

Okay. Thank you for the question. We confirm that the Health Authority in China has accepted a number of generic applications for roxadustat of course. Just to clarify, an acceptance is an administrative acceptance of a filing. It just means that technical review. It's about to commence. It does not represents a approval in any shape or form. Our composition matter patent expires in mid-2024 given the patent linkage system in China, we are not expecting any generics of roxadustat to be marketed until at least after that expiry date. Now, of course the composition matter patent represents only one of many patents that we have in our patent portfolio, all of which we intend to defend vigorously in China. Also, a point that I should point out, unlike in the U.S. there is life for a originator brand after patent expiry. In some cases, the volume of the originator brand actually increases, although, of course, at a lower price. We remain optimistic about our options on the exclusivity front. We are pursuing intellectual property options and market access tactics to preserve and extend that period of time. As you saw earlier, we saw a robust growth in market share increase of roxadustat in PKD. We believe there is tremendous market potential in that space alone for significant growth in the future. Of course, CIA would represent another sizable market if we were to get it. Thane, back to you.

Thank you, Chris. And then related to the question about 446, about why we're excited, I'd like, for John Hunter to address that question. And then if Mark has any comments after that to add on to that. John?

Sure, Thanks, Thane. I think one of the biggest points of excitement was really seeing monotherapy, efficacy in a very hard to treat patient population. As I mentioned, these patients were heavily pretreated. And, we saw partial response rate of about 20%, a very good PSA 50 response rate. So that was quite exciting relative to other assets that we are looking at. But also, the mechanism is very well validated as I had mentioned, there are - I think now five approved ADCs that use MMAE as the payload. Additionally, when we really did a deep dive into CD46 expression, we saw that it was quite restricted to tumors for the most part with only a couple of normal tissue showing any considerable expression. So, we had an entire package that we felt looks very good and we were very excited to bring it in. I'll talk about essential other indications and then I think I'll turn it over to Mark to address the multiple myeloma question. We are, in fact looking at indications to expand into. We have an ongoing translational medicine effort to identify IHC antibodies that we may use to be able to run a BASKET trial in patients from other solid tumors indications where the prevalence of CD46 expression might not be as high, but where we can select patients, who do have that high expression to enter into a trial. These are very early efforts. So, we will hope to out pay you as they progress. And now Mark, I'll hand it over to you for any additional comments.

Well, thanks, John. I mean, I think what we're - I'm also very excited about the molecule because or the ADC, because it has several potential ways to help patients into really add value to FibroGen. One is, as you said in metastatic castrate-resistant prostate cancer in monotherapy, the other one is an ENZO combo therapy, which is a current ongoing study at UCSF as you mentioned. The other one is either our solid tumors and/or multiple myeloma. So, multiple diseases seem to be driven by CD46. This is a very novel ADC. We have a parallel PET Imaging biomarker strategy that we’re pursuing. So I think there's a novelty and a deep biology underlying this program that's very exciting.

And I think maybe just to conclude related to the excitement for the Fortis asset is the favorable deal terms with no upfront cash consideration, success-based milestones and the opportunity over a four-year period of evaluation to potentially acquire the company for $80 million in addition to obviously what John and Mark just spoke about, we're really excited about the opportunity.

Okay. Thank you. Can I follow up on the first one? Is there any way to extend your exclusivity for roxa when, after your CIA indication gets approved?

So, how should we be thinking about it? So, there is a fourth amended intellectual property law in China. The law itself was activated to First 2021. At this point in time that regulations have not yet been implemented. So, we are looking at those opportunities with a - I think the decision would come down to what the Chinese company eventually decides to implement.

Okay. Thank you.

Welcome

One moment for our next question. Our next question comes from the line of Yaron Werber of TD Cohen. Please proceed with your question.

Hi. This is Joyce [Ph] on for Yaron. Thanks so much for taking our question. Maybe just a couple from us. First on the CIA. Can you tell us about your latest thinking around whether this is ultimately going to be a China only strategy? Or if you're thinking that this is going to come to the U.S. as well. And then, for the LAPIS study, could you just quickly remind us about the potential use of event-free survival as a surrogate for accelerated approval. Thank you.

Yeah. Thanks Joyce. Related to CIA, as of right now is a China only opportunity. And Mark, would you like to touch on the question on LAPIS?

Yeah, so the question had to do with the primary endpoint of the study, which is overall survival. As we mentioned in an earlier call, we did do an interim analysis for event-free survival as a potential surrogate marker. It was a very high bar analysis. It did not meet that analysis. So we're continuing the trial for overall survival as the primary endpoint. And we expect that to read out in the first half of next year.

Okay. Thank you.

One moment for our next question. Our next question comes from the line of Jason Gerberry of Bank of America. Please proceed with your question.

Hi guys, thanks for taking my question. Going back to the patent topic in China, is the process with the generic challengers entirely an issue of patent validity and if the patent is found valid, then there's a barrier until the expiry of the crystalline form IP or is there potential avenue of those generic challengers have different non-infringing crystalline form molecules they can potentially have an avenue to be found non-infringing. Just wanted to understand that dynamic a little bit better. And then, on pamrev for ambulatory DMD, I am wondering, if you could highlight any important mechanistic differences why pamrev might be more effective here than say, the non-ambulatory setting. Thanks.

Thanks Jason. Chris, if you could take the first question?

Absolutely. So with respect to generic challenges, so, first and foremost our competition matter patent is valid and all generic applicants on the patent linkage system in China have declared that they respect those patents. So that is a fact and this is why we're very confident that there will be no generic on the market until after that expiry. With respect to the crystalline patents. Crystalline patents are not considered part of the patent linkage system, which means they're not enforceable by the Health Authority, but they are enforceable by the court of law and that is what we will have to pursue. As to whether a generic applicant could potentially have a crystalline form and alternative polymorph patent that could get around us that unfortunately I think it's a question we have to defer to the patent attorneys to answer. I hope that's helpful.

No, that the other question was around the ambulatory versus non-ambulatory DMD. And I think we've always said that we expect a non-ambulatory DMD to be the most challenging because the patients have already lost so much function and they wheelchair-bound and the signal-to-noise ratio of the endpoint, the performance of the upper limb. We expect it to be a challenge and turned out to be a challenge. We also didn't see any clinically meaningful efficacy, in terms of the other endpoints including FPC percent predicted, ejection fraction by cardiac MRI. Unfortunately and it was very sad for all of us at FibroGen because we're really hoping to be able to deliver a therapy for these patients with non-ambulatory DMD, which is so desperately needed. So now we turn our attention to ambulatory DMD where because these are younger patients, they already - they still have much more functions. I think the North Star Ambulatory Assessment is a more holistic type of endpoint. We do feel like we still have a possibility of showing a benefit in this patient population and we're really looking forward to those top-line results in the near future.

Yes. Thank you.

One moment for our next question. Our next question comes from the line of Annabel Samimy of Stifel. Please proceed with your question.

Hi. Thanks for taking my questions. Just while we're on the DMV topic, I guess, one of the things we're wondering is, if in the ambulatory GM D trial, you don't necessarily see function, but you see benefit on some of these other markers such as the injection fraction or FEC. Do you see an avenue for filing on that? And in the non-ambulatory understanding that the non-ambulatory is more challenging, but with FEC and injection fraction or they is it also more challenging on those measures as well or with a strictly on the functional endpoints that you are referring to? Thank you.

Yeah, so I'll try to address both of your questions. So the second part first. Yeah, I think these endpoints are going to be more challenging in the non-ambulatory population and the ambulatory. What will say that the cardiac MRI is not nearly the same relevance for the younger patients who are aged 6 to 12, because that's a relatively - cardiac manifestations are relatively later manifestation in the disease. So that for ambulatory, it's the North Star, it's stair climb, it's 10 meter walk. Other endpoints like that are the primary and secondary endpoints. So, ultimately, the North Star, I think has been quite well, looked out and in the setting of other studies and we expect that it's a validated endpoint, and we're looking forward to those results.

Okay. Sorry. And is there any avenues for you to file - secondary benefits because of the North Star?

Well, so I think your question is for example, the North Star is kind of a near miss in their secondary endpoints. They are positive. So in that case, potentially, I mean, any positive data that we see in the ambulatory trial, I think would be the basis for us to want to really explore regulatory pathways with the FDA. So it'll be a data-driven decision, but we of course will look at all the endpoints and really look for any signs of efficacy in that trial that's coming up.

Okay. And then, if I can ask one more question with regard to pirfenidone is an anti-fibrotic agent, are there any other markers that you looked at from the LELANTOS-1 trial to give you an idea that there is actually anti fibrotic activity And, I couldn't help but sense the confidence about just, going into this trial. And so I'm just wondering if you saw anything else that that gave you some help.

Unfortunately, the LELANTOS-1 was really, there was no endpoint that really showed any signs of efficacy. It may be due to the non-ambulatory population and how advanced it is. I think the ambulatory LELANTOS-2 trial data will really help us to answer what clinical benefit and otherwise can be shown and DMD. So I think the studies will together tell the full story. So we have half the answer and we're eagerly awaiting the rest of the information from LELANTOS-2.

Okay. Great. Thank you.

Thank you for the questions.

One moment for our next question. Our next question comes from the line of Alexandra Ramsey from William Blair. Please proceed with your question.

Hello. This is Alex Ramsey on from William Blair. So a couple of questions from us if you don't mind. So, the first question is about the term loan with Morgan Stanley Tactical value? We're just curious about the status of the $75 million initial term loan. And is there any plan to pay back that loan earlier than the May 2026 maturation date or if that’s dictated by the terms of the loan? And then, second Mark, we were curious to hear if you have any insights on the ZEPHYRUS data. And if you have - in terms of why it underperformed for pamrevlumab and we’d understand that you're probably early in analysis. We're just wondering if anything popped out during the initial analysis. Thanks so much.

Yes. Thanks Alex. I'll have Juan address the MSTV question and then turn it over to Mark.

Yeah, Alex. Yes, on the term loan as you pointed out, we have an initial draw of $75 million. That has actually occurred as of the beginning of May, May 8th. I believe it was we received $75 million. So that's what we would expect to hold on until term maturity at this point in time. There's no plan for early repayment.

Thanks, Juan. Mark?

Right, so, in terms of the ZEPHYRUS-1 study, yes, disappointing results in terms of the primary endpoint and the secondary endpoints, Most of which showed kind of numerically better results for Pam versus placebo, but none of which were statistically significant. The kind of - there were three major issues going into the trial that I think we and everyone was focused on. Number one, was with the placebo decline at 48 weeks ZEPHYRUS-1 be adequate to short treatment product and it was - it was 330ml decline which compared very similarly to 300ml. The second point was the influence of prior history of standard-of-care and about half the patients were treatment experienced, about half were treatment-naive and that really made no real meaningful difference on the results. And then the last point that I think was a lot of focus are, what about those patients who started standard-of-care or study that turned out to be about 14% started out or has been on study and again, that did not make any meaningful difference in the study results. So, the top three things we were really focused on and I think the analyst and investor community was focused on really turned out to be within what we would have predicted. So, at this time, we don't have any clear reason why these - results were less significant than the praise results except to say that there - Phase 2 to phase 3 translation in this disease IPF is very, very challenging. If you look at the Galapagos Gilead if you look at the Roche data, they've run into similar challenges and I don't think these challenges are completely understood at this time.

Alright. Got it. Thank you so much. Very helpful.

Thank you for the questions.

One moment for our next question. Our next question comes from the line of Paul Choi with Goldman Sachs. Please proceed with your question.

Hi, thanks, good afternoon. And thank you for taking our questions. May be returning to the subject of DMD for a minute and LELANTOS-2, is there any component of the North Star assessment that you think we're pamrevlumab might show particular benefit? Any gleaning fair in the ambulatory population would be helpful?

Right. Well, the short answer Paul is, we really don't know. I mean, the total score is designed for the total score and we will be looking at – I will also be looking at, pardon me, 10 meter walk, the stair climb, other components, but at this point in time, it's difficult to answer that question. And I think we’ll have to wait the data.

Okay. Fair enough. And then, turning to your oncology pipeline and FG-3246, you'll have the combination study with XTANDI next year. I am just curious if you can maybe sort of frame expectations for what responses might look like, whether it's on PSA? Or how you're thinking about comping the results versus either monotherapy studies or other XTANDI studies with chemo? Any framework or context there would be appreciated. Thank you.

Good. Thanks, Paul. I have John address the second question.

Sure. Hello and thank you, Mark might have better insight into it. But just with regards to how we're viewing it, we kind of have a baseline now with the monotherapy results and we know what to expect with a FG-3246 alone. So really I think with the XTANDI combination, we will be looking to see if there is an additional benefit. And we'd be looking both at the PSA50 and overall response rate given that we did see those in the earlier Phase 1 trial. Mark, you might want to add anything?

Yeah. Sorry, John. I was – I have the exact same perspective. If it does increase CD46 expression, enzalutamide that is that we could expect to see a greater degree of clinical efficacy that will help the hypothesis and that has been tested.

Great. Thank you.

I am showing no further questions at this time. I would now like to turn the conference back over to Thane Wettig for closing remarks.

Thank you. So we really appreciate your participation in today's investor call and your interest in FibroGen. We believe we have a really exciting future ahead of us with the pamrevlumab readouts with a robust and growing roxadustat business, with an exciting early-stage pipeline and a really strong balance sheet. And so, we look forward to maintaining the engagement and keeping you abreast of our accomplishments going forward. Thank you.

Thank you for your participation in today's conference. This does conclude the program. You may now disconnect.