Good morning, and everyone, welcome to Cellectis, Cellectis' Second Quarter 2023 Earnings Call. At this time, all participants are in a listen-only mode. Later, we will conduct a question-and-answer session, and instructions will follow at that time. Please be aware that today's conference call is being recorded. I'd now like to introduce the first speaker, Arthur Stril, Chief Business Officer. You may begin. Good morning, welcome everyone to Cellectis' second quarter 2023 corporate update and financial results conference call. Joining me on the call today with prepared remarks are Dr. Andre Choulika, our Chief Executive Officer, Dr. Bing Wang, our Chief Financial Officer, and Dr. Mark Frattini, our Chief Medical Officer. Yesterday evening, Cellectis issued a press release reporting a corporate and business update for the second quarter 2023 and its non-audited financial results for the six month period ended 30th June 2023. As disclosed in our press release published yesterday, the report, including our non-audited financial statements for Q2, will be released in the coming days. As a reminder, we'll make statements regarding Cellectis' financial outlook, including the sufficiency of cash to fund operation, in addition to its manufacturing, regulatory and product development status and plans, and product development of its licensed partners. These forward statements, which are based on our management's current expectations and assumptions and on information currently available to management, including information provided or otherwise publicly reported by our licensed partners, are subject to risks and uncertainties that may cause actual results to differ from those forecasted. A description of these risks can be found in our most recent Form 20-F, filed with the Securities and Exchange Commission, SEC, and the financial reports, including the management report for the year ended on 31 December, 2022, and subsequent filings Cellectis makes with the SEC from time to time. I would now like to turn the call over to Andre. Thank you, Arthur. Good morning, thank you everyone for joining us today. The second 2023 quarter was marked by strong execution. Our last clinical data presented for UCART22 at the European Hematology Association annual meeting are encouraging for patients with relapsed or refractory B-cell acute lymphoblastic leukemia who have failed multiple lines of treatment options, including chemoimmunotherapy, CD19 directed CAR T-cell therapy, and allogeneic stem cell transplant. We're looking forward to releasing our new data later this year on UCART22, manufactured in-house. Cellectis also presented an encore of the clinical data of the AMELI-01 clinical trial evaluating UCART123 at the American Society of Gene & Cell Therapy annual meeting. These preliminary data support the continued administration of UCART123 after fludarabine, cyclophosphamide, and alemtuzumab lymphodepletion in patients with relapsed or refractory acute myeloid leukemia. In addition, this quarter, Cellectis' innovation team was proud to present strong preclinical data on gene editing process to develop a bona fide HBB gene correction of sickle mutation. In addition to that, we have presented a comprehensive analysis to better design efficient TALE Base Editor at the International Society for Cell & Gene Therapy annual meeting. These achievements showcase more the power of gene editing platform, both as talent for therapeutic gene editing, and that we are continuing to deliver constant breakthrough innovation to treat diseases with unmet medical needs. Cellectis announced that during this annual shareholder meeting, Dr. Cecile Chartier has been appointed as a director of the company's Board of Directors. At the end of this meeting, the terms of the office of Mr. Opgen-Rhein and Mrs. Schwebig ended. I'm very pleased to welcome Dr. Cecile Chartier to Cellectis' board. Her extensive experience in the development of next-generation cell and gene therapies, coupled with her deep knowledge of US biotechnology industry, will be a huge asset to Cellectis. We look forward to her contribution and insights as we continue advancing the development of our product candidates. In 2023, we made substantial progress with our pipeline. Despite an unprecedented challenging market environment for the cell and gene therapies company, Cellectis remains deeply focused on its core clinical trial, BALLI-01, evaluating UCART22, NATHALI-01, evaluating UCART20x22, and AMELI-01, evaluating UCART123, and on its mission to develop innovative cancer therapy product candidate. With that, I would like to turn the call over to Dr. Frattini, our Chief Medical Officer, who will give an overview of these clinical trials. Mark, please go ahead. Thank you, Andre. As Andre mentioned, we have made progress in our BALLI-01 clinical trial with the presentation of updated clinical and translational data at the European Hematology Association annual meeting that support the preliminary safety and efficacy of UCART22 in a heavily pretreated, relapsed, refractory B-cell ALL population. The poster presentation reviewed clinical and translational data from patients who received UCART22 after lymphodepletion with fludarabine and cyclophosphamide, or FC, or fludarabine, cyclophosphamide, and alemtuzumab, or FC-FCA, in patients with relapsed/refractory B-cell ALL. Compared to the clinical update on BALLI-01 at ASH 2021, the poster presented data from six additional patients who received UCART22 at dose level three as of 31st December 2022, data cutoff. UCART22, administered after FC or FCA lymphodepletion regimen, was well-tolerated. No dose-limiting toxicities or immune effector cell-associated neurotoxicity syndrome were observed. For FCA dose level three to five million cells per kilogram, 50% of the six patients responded. Post lymphocytes remained suppressed through day 28 for all patients who received FCA lymphodepletion. Peak ferritin levels correlated with UCART22 cell expansion and cytokine secretion. UCART22 continues to be safe and tolerable, with no treatment-emergent serious adverse events or DLTs recorded. UCART22 cell expansion was detected in nine of 13 patients in the FCA lymphodepletion arm and associated with clinical activity. The BALLI-01 study is currently enrolling patients after FCA lymphodepletion with Cellectis' in-house manufactured product. The next data set is expected to be released later this year. Our AMELI-01 study, evaluating UCART123 in patients with relapsed/refractory AML, continues to progress and enroll patients in the FCA two-dose regimen arm. On 17th May, Cellectis presented an encore of the clinical data that were unveiled at the ASH 2022 annual meeting at the American Society of Gene & Cell Therapy annual meeting. These preliminary data support the continued administration of UCART123 after FCA lymphodepletion in patients with relapsed/refractory AML. The oral presentation reviewed preliminary data from patients who received UCART123 at 1 of the following dose levels: dose level 1, 2.5 x 10^5 cells/kilogram; dose level 2, 6.25 x 10^5 cells/kilogram; dose level 2 intermediate, 1.5 x 10^6 cells/kilogram; or dose level 3, 3.3 x 10^6 cells/kilogram, after lymphodepletion with FC or FCA. The data presented showed that adding alemtuzumab to the FC lymphodepletion regimen was associated with sustained host lymphodepletion and significantly higher UCART123 cell expansion that correlated with improved anti-leukemia activity. Two of eight, or 25%, of patients at dose level two in the FCA arm achieved meaningful responses, including one patient who failed five prior lines of therapy, including allogeneic stem cell transplant, who experienced a durable minimal residual disease, negative, complete response that continued beyond 12 months as of December 2022. Lastly, I will speak about our NATHALI-01 study evaluating UCART20x22. UCART20x22 is Cellectis' first dual allogeneic CAR T-cell product candidate, targeting both CD20 and CD22, and is being evaluated in patients with relapsed/refractory B-cell non-Hodgkin lymphoma. The NATHALI-01 clinical study is ongoing, and Cellectis expects to provide first-in-human data later this year. Cellectis also continues to advance our preclinical programs and provided preclinical proof-of-concept data for UCART20x22 to overcome current mechanisms of resistance to CAR T-cell therapies in B-cell NHL while providing a potential therapeutic alternative to CD19 targeting and allowing a reduction in the time from treatment decision to cell infusion. We demonstrated that UCART20x22 displays robust activity both in vitro and in vivo against targets expressing heterogeneous levels of CD22 and CD20. In vitro cytotoxicity assays against different tumor cell lines showed strong activity, whether these cells expressed a single antigen, CD20 or CD22, or both antigens simultaneously. These preclinical data were presented in June at the International Society for Cell & Gene Therapy annual meeting. With that, I would like to hand the call over to Dr. Bing Wang, Cellectis' Chief Financial Officer, for an overview of our financials for the second quarter of 2023. Bing, please go ahead. Thank you, Mark. I would like to highlight that in our financials, the cash, cash equivalent, and restricted cash position of Cellectis, excluding Calyxt, as of 30th June 2023, was $89 million, compared to $95 million as of 31st December 2022. This difference mainly reflects $55 million of cash out, which includes $50 million of payments for R&D expenses, $7 million for SG&A suppliers, $23 million for staff costs, $7 million for rent and taxes, $3 million of reimbursement of the PGE loan, a $21 million net cash inflow from EIB loan, a $1 million of refundable advance from BPI, $2 million of financial investments, capital gain and interest, a $1 million reimbursement of social charges on stock options, a $1 million cash inflow from customers, and a $23 million net cash inflow from the capital raise closed in February. This cash position is expected to be sufficient to fund Cellectis' standalone operations into the third quarter of 2024. The closing of the proposed Calyxt merger was finalized on May 31, 2023. Consequently, Calyxt was deconsolidated and presented as discontinued operations in the financial statements only until May 31, 2023. The net loss was $46 million in the six month period of 2023, compared to a loss of $54 million in the six month period of 2022. This $8 million decrease in net loss between 2023 and 2022 was primarily by a decrease of $6 million in purchases and external expenses because of quality and manufacturing internalization, a decrease of $4 million in personnel expenses due to headcount rationalization, and an increase of $2 million of net financial gain, almost fully offset by an increase of $3.5 million in net loss of discontinued operations. The net loss attributable to shareholders of Cellectis was $41 million, or $0.76 per share in the six-month period of 2023, compared to a loss of $51 million, or $1.12 per share in the six-month period of 2022. This $10 million decrease in net loss between 2023 and 2022 was primarily driven by a decrease of $11 million of R&D and SG&A expenses, an increase of $2 million of the financial gain, partially offset by the $3.5 million decrease of net loss from discontinued operations attributable to shareholders of Cellectis. The adjusted net loss attributable to shareholders of Cellectis, which excludes non-cash stock-based compensation expenses, was $37 million, or $0.68 per share in the six-month period of 2023, compared to a loss of $46 million, or $1 per share in 2022. The tranche A of EUR 20 million of the credit facility we received from the European Investment Bank was received in April. The initial payment from BPI related to our grant and refundable advance of $1.1 million was received in June, for $0.9 million and $0.2 million in July. We are laser-focused on spending our cash on developing our clinical candidates and operating our state-of-the-art manufacturing facilities in Paris and in Raleigh. In addition, our focus on maintaining an efficient corporate infrastructure should also enable more limited growth in G&A spend in the future. Thank you, Bing. To close out this call, I would like to reiterate how confident we are about the continued progress of our three ongoing clinical trials in hematological malignancies, as well as our continued development of our preclinical programs. At Cellectis, we strongly believe that our product candidates, our technologies, and our in-house manufacturing capabilities will lead us to a paradigm shift for patients with hard-to-treat cancers, positioning us at the forefront of this promising medical and scientific field. With that, I would like to open the call for the Q&A. Thank you. We will now be conducting a question-and-answer session. If you would like to ask a question, please press star one on your telephone keypad. A confirmation tone will indicate that your line is in the question queue. You may press star two if you would 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 keys. One moment, please, while we poll for questions. Our first question comes from Yigal Nochomovitz with Citigroup. Please proceed with your question. Yeah, hi. I had a question about the BALLI-01 study in ALL. You said you had six additional patients at dose level three, 50% ORR, and now you're continuing with the study with the in-house product. Are you gonna be going with the same dose with the in-house product, or will the in-house product move to a higher dose above DL3? Thanks. Thank you, Yigal. Great question. I'll hand this one over to Mark. Hi, Yigal. Thanks for your question. Yeah, so that, that presentation was at DL3 with the CDMO manufactured product. I think as we've discussed previously, the in vitro comparability test that were done between the CDMO manufactured product and the product that was manufactured at Cellectis showed that the Cellectis product was significantly more potent than the CDMO manufactured product. Therefore, we elected to bring the Cellectis product into the clinic at a reduced dose level, at dose level two. It started in patients at 1 million cells per kilo due to its significant increased potency of the product. Okay, thanks. What, what could you talk about the expectations for when we might see the first data from the in-house product? Yeah. We will discuss the first patients dosed with the in-house product, later this year. It will be disclosed. Okay. Thank you. Our next question comes from Gena Wang with Barclays. Please proceed with your question. Thank you for taking my questions. I have two. The first one is regarding clinical data, the UCART22. You did show very promising response at the EHA update. Just wondering, how long do you think a post-treatment could give us a definitive durability profile? This question apply to UCART22, but also apply to other programs in general for allo CAR T approach. My second question is regarding your base editor. You know, you also demonstrate your gene editing platform capability with base editor. Any plan to maximize your potential and the value proposition with this tool? Thank you, Gina. These are two great questions. I will give the first one to Mark, and then on base editing, maybe Andre. Okay, great. Thanks, Gina, for your question. Yeah, agreed. In terms of durability of response, this is obviously once we get to an RP2D dose that we want to move forward with, you know, I think in similar fashion that's been shown in the autologous space. You know, we're you know, looking at the six-month, six-month duration, I think would be appropriate. Oh, hi, Gina. Thank you very much for the question on base editing. It's. We're, we're very excited by this technology because of its extreme precision and the ability to reduce as much as possible the potential genotoxicity, because it doesn't clip DNA, unlike nucleases. We consider using them in series of different type of disposition, for example, making combos when you want to do knock-ins and knockouts. With the base editor, you can essentially edit a base, so you can disable a gene, so make a knockout, or restore function of the gene in changing the base pair that might induce a mutation. You cannot insert or replace DNA. Therefore, the technology could be used, for example, when you want to multiplex and in order to reduce the number of clips in the DNA, even though if you do two series of cutting, and you wait between the two, if you want to pile up, it's better to combine a base editor that does not clip the DNA with a potential nuclease to do a knock-in, wait a bit, and do a second, a second shot. For example, when you look at the product that we have developed, Mach one, has two knock-ins and three knockouts. This could be, for example, disposition for this amazing prologue for triple-negative breast cancer and ovarian cancer. It has a lot of potential with this. The second thing that we believe that could be used for base editing is potentially for in vivo delivery, for certain type of genetic diseases, and because it doesn't require to have the combination with a repair matrix to, for example, fixing DNA and can essentially either by knockout or by fixing a mutation induce certain mutations and then also in other type of application in genetics. Essentially, I think that's going to be a huge add up on the design of the CAR T that we do when we'll move into, we'll scale up the sophistication of gene editing into this and in multiplexing and modification in these cells. It's next-gen things that we're, we're bringing. The thing that you don't want is to make too many cuts in the DNA because that would induce. Whatever you do, it will induce translocation, and a certain rate is not acceptable. Hope it answered your question. Yep, that's very helpful. Thank you both. Thanks. Our next question comes from Yanan Zhu with Wells Fargo. Please proceed with your question. Hi, thanks for taking the questions. I was wondering about the UCART22 by 22 data readout later this year. What could we expect from the readout in terms of how many patients and what duration of follow-up? Also, will the patients be mostly in a setting of post-autologous CAR T- CD19 CAR T? What would be considered a, a successful outcome from this readout from the company's perspective? Thank you. Thank you very much, Yannan, for the spotlight on UCART20x22. Over to you, Mark. Yeah, great. Thanks for the question. Obviously, we're all very excited about 20x22, and as you know, the trial just recently started accruing earlier this year. We expect to reveal the first in-human data for this very interesting dual allogeneic CAR T-cell product in patients with relapsed/refractory B-cell non-Hodgkin lymphoma. As part of the inclusion criteria for this study, the patients will have to have failed some form of CD19-directed therapy, including autologous CD19 CAR T if they're eligible to get them. Patients are also eligible for this study if for some reason that they are not able to generate an autologous product. In terms of the, the response, these are early days in escalation, so, you know, so, you know, we'll, we'll reveal that response rate, later this year with the 1st in human group. Got it. In terms of the, the dose level, you know, could you talk about, the, the designed dose levels and, at which dose level we might see data? Yeah. The initial dose level that we started enrolling patients is 50 million cells flat dose. It's a flat dosing like most of the, the NHL, CAR T cell studies. Got it. Lastly, I was wondering if you could talk about options to extend the cash runway, and whether there, you know, there could be consideration for, for example, the money, For example, monetization of the royalty stream from Allogene. Yeah, sure. I'll take this one. Go ahead. Sure. I mean, from a cash perspective, I will also highlight we have, you know, multiple other options. I'll give you, for example, the European Investment Bank loan that we signed in end of last year, for example. We haven't drawn on Tranche B yet, even though we fulfill all the precedent conditions for Tranche B, as, as an example. As opposed to monetization of royalty, you know, we're not obviously in a position to discuss that right now in, in, in this forum. Thank you very much, Yannan. Great. Thank you. Our next question comes from Salveen Richter with Goldman Sachs. Please proceed with your question. Hi, yes, this is Anupam Damani on for Salveen. Thank you for taking our question. Just, jumping on the back of the previous question, if you could just provide an update on how enrollment is going in that trial, whether you've experienced any bottlenecks there, then just what has the physician feedback been with respect to that asset? Thank you so much. Thank you. These are great questions. I'll hand them over to Mark. Yes, thanks for the question. Yes, enrollment is continuing. What I can say is that the investigators are incredibly excited by the potential to use an alternative to CD19 in this disease space, and particularly, dual CAR T cell, and one that's allogeneic coming off the shelf to provide rapid access to these patients, of this product. There's, there's intense excitement around this protocol. Thank you. Our next question comes from Kelly Shi with Jefferies. Please proceed with your question. Hi, this is Dave on for Kelly Shi at Jefferies. Thank you for taking our question. Continuing on UCART22, quick question: How many patient data should we expect at year-end? If the baseline will be similar to what we saw with the previous product. Just wondering if you can add how many sites are active in the US and EU, maybe if you can remind if you have initiated dosing at the US sites or not. Thank you. Thank you. That will be for you, Mark, as well. Yeah, thanks for the, the question. You know, as we discussed previously, we will be revealing the first patient data with the new in-house manufactured product. As we discussed prior, we did bring that into the clinic at dose level two. That's what we will be discussing later this year. In terms of enrollment, this trial is enrolling both in the US and in the EU with the in-house manufactured product. Thank you for taking the question. Our next question comes from Hartaj Singh with Oppenheimer & Co. Please proceed with your question. Great. Thank you, and thanks for the question after a very busy week this Friday. Just had a quick question on UCART22. You know, maybe you could just talk a little bit about the unmet need in that, you know, post-CD19 patients. It seems that, you know, a few years ago, there was a small, maybe, for lack of a better word, niche population, but it seems to be increasing the patient population there, and the unmet need is fairly high, too. If you could just talk a little bit about that, and I imagine that's where UCART22 slots in. Then with just UCART123, you know, you indicated previously, you know, this target is, can be unstable, and it's a difficult patient population. With the addition of FCA, how's that changing in your view and your ability to treat patients? Thank you for the questions. Thank you, Hartaj, and I think both questions would definitely go for Mark. Thanks, Hartaj, for the question. I think in the 22 space, you know, the UCART 22, right now is the only allogeneic CAR T cell that's being developed in the ALL space. As you point out, there was, you know, all the initial success of 19, which is a great target. However, there are a significant number of relapses that have been seen as also in terms of the duration in the ALL space as well. This, clearly, as you point out, opened up a very significant window for this UCART 22 in this space. Also, in the fact that, you know, in terms of being able to give this product to patients that have been so heavily pretreated, chemo, transplant, prior CD19 CAR T, a lot of times these patients come in with limited marrow reserve. Obviously, an allogeneic CAR T-cell is in fact a great option for them at that point, where they may not be able to mobilize anything for an additional autologous product. I think for 123, I don't know about it being unstable. I think, I think the issue is more that we needed the alemtuzumab to allow for significant host lymphosuppression, you know, throughout the DLT period and beyond, so at least 28 to 30+ days of having the host lymphocytes down so that we could see significant expansion of the UCART123 and therefore, clinical activity. I think that's really the major focus for, for the addition of the alemtuzumab. It's very similar into what we've shown in the UCART22 study for why we need the alemtuzumab to allow for better UCART expansion and clinical activity. This is also the reason why we just proceeded with UCART20x22, going in with FCA lymphodepletion for that reason. Great. Thank you, Mark. I hope that answers your question. Oh, no, no. That's great. Thank you, Mark. Appreciate the update. As a reminder, if you would like to ask a question, please press star one on your telephone keypad. Our next question comes from Jack Allen with Baird. Please proceed with your question. Great. Thank you so much for taking our questions. Just two quick ones from us. Maybe starting on the clinical side with UCART20x22, it's great to see that product getting a lot of focus on the call today. A number of questions have already been asked here, but the one I had was: What are the expression requirements for CD20 and CD22 in the, in the patients with regard to enrollment criteria? Are there any expression requirements, or are you taking all comers in that, post-CAR T or post-CD19 setting? Then on the financial side, I was hoping, Bing, maybe you could speak just briefly about any comments around the Servier disputes. I know it's more an Allogene Servier thing, but I'd love to hear any updates you, you have on that perspective as well. Thanks so much. Thanks, Jack, for the questions and the continued focus on twenty by twenty-two. We'll start with Mark on this one. Hi, Jack. Thanks for the question. Yes, for the 20x22 study, there's no requirement for both antigens. There's t hey only have to express one or the other, so either 20 or 22 or both. That's in terms of expression. Okay, thanks. For the question on the Servier, I'll hand it over to Andre. Hi, Jack. Well, thank you very much for the questions. Really appreciated. You know, last year, like in September 2022, Allogene and us issued some information that, Servier was not helping that much on these trials, and since then, there was limited communication. Given the situation, I'm going to abstain to say anything in order not to complexify the situation. Therefore, you'll have to wait, up to the time the situation clarifies. But today, hope that there will be clarity in the future. No problem. Completely understand. Thank you very much for the question. I know it's frustrating, but this is it, like, you know, these type of situations. Yep. Yep, completely understand. Thanks for the comment. Our next question comes from Silvan Tuerkcan with JMP Securities. Please proceed with your question. Yeah, good morning, and thanks for taking my question. I just have a quick question on your FAP CAR T. Could you talk a bit about the target and, and the initial populations there? Then in terms of big picture, when would that move that into the clinic, and, or, or are you currently just executing on your three assets in the clinic? Thank you so much. Thanks, Sylvain. A great question on your CAR T FAP. That one would be for Andre. Well, we're, we're super excited by this product. FAP is an amazing cancer, like a product for a series of different type of cancers, but could be applied potentially for other things also. We would like to... We can push it either in monotherapy or combo therapies, we haven't given clear guidance on how we're gonna use it, but definitely it's one of the products that is one of the highlight of the preclinical pipeline that Cellectis is wants, wants to push. There is, like I mentioned, about this product in Frontiers in Immunology publication that we have currently. Watch the company, if the cash position will change in the near future, it's something that would definitely be one of the highlights in the current pipeline we have. Great. Thank you. There are no further questions at this time. I would now like to turn the floor back over to Andre for closing comments. Well, thank you very much, everyone, for attending this Q&A session and earnings call. We're very excited by first half of this year and the execution. We're extremely proud of what happened, and we're really looking forward into the second half of this year because there are, like, strong events that will mark the company in the for the second half up to the end of the year. Definitely watch Cellectis and the execution that is happening today, and also the innovation that we're bringing to the clinic. It would be very interesting. Thank you very much for everyone. This concludes today's conference. You may disconnect your lines at this time. Thank you for your participation.