Good day, and thank you for standing by. Welcome to the bluebird bio 2nd Quarter Results and Commercial Launch Progress Call. At this time, all participants are in listen-only mode. After the speaker's presentation, there will be a question-and-answer session. To ask a question during the session, you will need to press star 1 1 on your telephone. You will then hear an automated message advising that your hand is raised. Please be advised that today's conference is being recorded. I would now like to hand the conference over to Ms. Courtney O'Leary, Investor Relations. Please go ahead. Good morning, everyone, and thank you for joining today's call. I am Courtney O'Leary, Investor Relations at bluebird bio. Before I begin, let me review our safe harbor statement. Today's discussion contains statements that are forward-looking under the Private Securities Litigation Reform Act of 1995, including expectations regarding our future financial results and financial position, in addition to statements about the company's plans, expectations, or intentions regarding our business, regulatory progress, and commercialization plans. Such statements are based on current expectations and assumptions that are subject to risks and uncertainties and involve a number of risk factors that could cause actual results to differ materially from projected results. A description of these risks is contained in our most recent Form 10-Q and our other filings with the SEC, which are available on the Investor Relations section of our website, www.bluebirdbio.com. With me on the call is Andrew Obenshain, our CEO, who is going to provide some opening remarks on bluebird's strategic position and vision, and then review our Q2 results. Tom Klima, Chief Commercial and Operating Officer, will dive deeper into the positive momentum in our commercial launches and highlight the lovo-cel market opportunity ahead of us. They will then be joined by Chris Krajcik, Chief Financial Officer, and Richard Colvin, Chief Medical Officer, for Q&A. With that, I will turn the call over to Andrew. Thanks, Courtney. Good morning, everyone. I want to ground our call this morning on why we're here. A few weeks ago, we heard from a young adult with sickle cell disease who was treated in our HGB-206 study. This was a real privilege. Reflecting on life since gene therapy, she shared, "It's amazing. My mind is open to the world of possibilities. So much is in front of me that I want to accomplish. There's so much more for me than what my previous medical teams had envisioned for me themselves, and I'm excited about it." This is why we're here, and what it we mean when we talk about bringing patients and families more bluebird days. Over the past decade, bluebird has established ourselves as a gene therapy leader, proving our clinical, regulatory, and commercial capabilities. Clinically, we have the longest and most robust gene therapy program in the field, with over 180 patients treated across 8 clinical trials, with up to 9 years of follow-up and over a decade of gene therapy research. We have an established regulatory track record with 2 FDA gene therapies on the market and a third BLA currently under priority review. Now we are making strides commercially, actively launching, achieving reimbursement, and treating patients with 2 therapies today. We occupy a unique strategic position in the gene and cell therapy industry. There are only a small handful of companies, all large cap, that currently have the commercial and cell and gene, gene capabilities that we do. On the opposite side of the spectrum, there are more than 250 companies studying gene therapies preclinically or clinically, who lack a gene therapy infrastructure, with new companies being formed every month. We believe that with our unique capabilities, bluebird bio is in an attractive strategic position as one of the only standalone commercial gene and cell therapy companies. Our extensive platform of gene therapy expertise includes manufacturing experience, particularly with viral production and cell processing, more than a decade of R&D experience, and an established commercial infrastructure. Our strategic vision for the future is clear: to evolve into an industry-leading gene therapy company with opportunity for expansion and growth for years to come. We have put in place the pieces that we need to be a successful biotechnology company. We are on a path to profitability in the near term and anticipate additional growth and scale within the next 5 years. We conservatively estimate a combined multibillion-dollar revenue opportunity in the U.S. for Zynteglo and lovo-cel, if approved. We have a focused commercial footprint with the ability to cover U.S. transplant centers with a relatively modest but effective field presence. At scale, we estimate a gross margin of at least 70% as we invest in manufacturing quality capacity. My comments pertain only to the U.S. There's also significant upside potential with holding our global rights for all three therapies, particularly for Zynteglo and lovo-cel. I will move now to how our business is performing today and the updates from the 2Q. I will summarize the highlights, and additional details can be found in our Q2 release this morning and in our 10-Q. First, it's incredibly exciting to be here, almost a year after the FDA approval since Zynteglo and Skysona. The initial traction we are seeing in these launches is a testament to the robust commercial viability of our platform. For Zynteglo and Skysona, we have 16 patient starts to date. Assuming all of these collections result in infusions, this translates to a potential $45 million in gross revenue over time. We see that continuing to accelerate quarter-over-quarter. Our therapies are being covered by insurance, and there have been no ultimate denials from commercial or government payers for either therapy. We've activated 15 QTCs, Qualified Treatment Centers, which is sufficient for the Skysona and Zynteglo launches, but we anticipate an aggressive ramp-up to 40-50 QTCs by year-end to support the potential launch of lovo-cel next year.... Looking ahead to lovo-cel for sickle cell disease, we have the opportunity to make a tremendous difference to change the lives of the more than 20,000 individuals living with severe sickle cell disease in the U.S. that may be appropriate for gene therapy. In June, our BLA was accepted and granted priority review by the FDA for the treatments of patients 12 and over with a history of vaso-occlusive events, or VOEs. At this time, the FDA has not requested an advisory committee meeting. Keep in mind, this is the third LVV gene therapy they've reviewed from Bluebird, which gives us great confidence, and we look forward to a decision from the FDA by the end of this year, with a PDUFA date of December twentieth, and anticipate a commercial launch in early 2024. Additionally, the value of our therapy and need for rapid, equitable access for patients is already being recognized. Just a few weeks ago, ICER reported that lovo-cel is cost-effective, up to a price of $2.26 million. In fact, ICER rated lovo-cel's clinical effectiveness more favorably than direct competitors when compared to current standard of care. Financially, we are confident in our lean and efficient business model. We are focused on one mission and have the expertise and agility to deliver for patients and our business. For the quarter, we reported $6.8 million combined product revenue for Zynteglo and Skysona. As of June 30th, we had $291 million in cash, cash equivalents, marketable securities, and restricted cash. We remain on track with our full year 2023 cash burn guidance in the range of $270 million-$300 million, and continue to prudently deploy capital and make investments to maximize stakeholder value as we launch Zynteglo and Skysona and prepare for the launch of lovo-cel. We continue to estimate that we have a cash runway into the fourth quarter of 2024, including the restricted cash. As previously disclosed, this estimate of cash runway includes approximately $45 million of restricted cash, which is currently unavailable for use. Without the release of our restricted cash, our runway is through the second quarter of 2024. Now, I would like to turn the call over to Tom to dive deeper into our commercial launch progress and momentum in greater detail. Thanks, Andrew. Good morning, everyone. Almost a year ago, we discussed our first commercial launch plans following the Zynteglo approval. It's exciting to be here this morning to dive deeper into the progress we have made since then to bring our one-time treatments to patients. We are forging the commercial model for ex vivo gene therapy in the US, and this quarter, we continue to make great progress across the key pillars of our launch, including patient demand, qualified treatment center or QTC onboarding, and access and reimbursement. We want to give some additional insight into the launch dynamic for Zynteglo and how the foundation we have built has laid the groundwork for commercial growth that is projected to accelerate quarter-over-quarter. In August 2022, we said we would launch Zynteglo with 5 Wave One QTCs, which we accomplished by the end of September. Today, every one of those QTCs have started a patient. In fact, most of these centers are treating their second, third, or even their fourth patient. Our Wave Two QTCs, or next five, were activated by the end of last year. We are excited to report that 40% of our Wave Two QTCs have started a patient, with the rest on track to start a patient in the coming months. We are currently activating our Wave Three QTCs. These centers have more recently been onboarded and are in the process of patient identification, enrollment, and scheduling. We are building trust with our QTC network. They are gaining incredibly valuable experience. They are understanding our process better, they are identifying interested patients, and have become more familiar with the reimbursement process. This all lends to an acceleration of our QTC activation, which is expected to bring the time to activation down for months for Zynteglo to weeks for lovo-cel, and we remain on track to scale the bluebird QTC network to between 40 and 50 by the end of this year, and will likely continue to expand into 2024 to ultimately reach more patients. The Zynteglo launch is progressing exactly how we would expect an ex vivo gene therapy commercial launch would, with trajectory gradual and linear, and momentum continuing to build over time. Now, if we flash forward to early next year, these centers will be able to leverage their experience from administering Zynteglo and are anticipated to be ready to treat individuals with sickle cell disease soon after the lovo-cel potential approval, further capitalizing on our 18-month head start on the competition. Delivering a consistent and reliable manufacturing process is a key part of delivering gene therapy and is essential for physicians, providers, and for patients and their families. As a reminder, a key element of ex vivo gene therapy is that the transplant center is an integral part of the supply chain. We have built a strong reputation with these centers through our commitment to transparency and partnership throughout the entire process, from QTC onboarding all the way through patient infusion. For Zynteglo, post-sale collection, it takes on average 70 to 90 days to manufacture, test, release, and then deliver the therapy back to the hospital. The infusion of Zynteglo is driven primarily by patients, physicians, and their schedules. At this phase of our launch, we continue to focus on patient starts as the lead indicator, with the expectation, as Andrew noted earlier, that starts translate to revenue as the treatment process and infusions are completed. Currently, bluebird bio recognizes revenue upon infusion. This process will largely be the same for lovo-cel and for other ex vivo gene therapy in this space, and is yet another example of where bluebird bio is leading the way. Transitioning to lovo-cel for sickle cell disease. Before I talk about our launch preparations and the commercial opportunity, I want to remind everyone of the transformative impact of the therapies seen in clinical trials. Our clinical data reflects the most robust data available, with the longest follow-up across any gene therapy program for sickle cell disease. More specifically, our BLA package includes efficacy data from 36 patients with a median of 32 months of follow-up, and safety data from 50 patients treated across the entire lovo-cel program. From our August 22, 2022 data cut, we showed 97% complete resolution of severe vaso-occlusive events through 24 months, and the majority of adverse events were attributed to underlying sickle cell disease or conditioning with busulfan. We continue to work with the FDA through their review of our package, and we look forward to our PDUFA on December 20th of this year. Preparations are well underway for the commercial launch in early 2024, if approved. The unmet need for these patients is great. Sickle cell is a devastating disease that has historically been ignored and its severity underappreciated. We have performed more than seven years of market research with sickle cell treaters, transplanters, and with patients, which has consistently demonstrated that lovo-cel is a meaningful treatment option for patients, giving us great confidence in the significant opportunity ahead. Starting on the left-hand side of the slide, we have consistently seen strong patient excitement for gene therapy. We have found that more than 70% of patients would consider gene therapy if recommended by their doctor. Demand and eagerness for gene therapy is clearly there and continues to grow. Moving to the middle, one of the greatest misperceptions is that patients and providers are partial to one modality over another. The research simply does not show it. In fact, market research shows that more than 70% of patients will make a treatment decision based on efficacy and based on long-term follow-up, but not based on modality. This is a key differentiating point for lovo-cel, which has the longest and most robust clinical and safety profile of any gene therapy for sickle cell disease. Finally, through our market research over the years, we have seen lovo-cel capture between a 50%-65% market share against a direct competitor. This was established after respondents reviewed both product profiles and then were asked which one they would prefer if both were available on the market. All of this market research is coupled with a decade-long partnership between bluebird bio and the sickle cell patient community. I talked earlier about our key pillars of our Zynteglo launch, including patient demand, our QTC network, and access and reimbursement. I'm pleased that we're already making great progress on these pillars and finalizing the launch readiness for lovo-cel. We are excited about the clear patient and physician demand, as evidenced by the research I just discussed, and we will continue to partner with the patient community to broaden education around gene therapy. Our QTC network is growing and continues to become more efficient, gaining experience and momentum. Finally, access to gene therapy is critical for patients. bluebird continues to lead the way on value demonstration and in working with government and private payers on our innovative payment models, and we're excited about continued positive feedback from target payers on clinical value for high unmet medical need and on our outcomes-based approach. We are confident in our therapies, we are confident in our strategy, and we are confident in our team, and we are making a difference in the lives of patients today and laying the foundation for many more to come. Now back to Andrew. Thanks, Tom. Before closing out the call, I want to spend a few minutes on Skysona. As I mentioned earlier, we've completed five patient starts, activated four QTCs, and received no ultimate denials from government or commercial payers to date for Skysona. It's critical to remember that cerebral adrenoleukodystrophy is a very different disease than our other disease areas. While the financial impact of Skysona is not material to Bluebird, the impact it can have on the lives of patients and families affected by CALD is. Skysona was approved based on a 24-month improvement in Major Functional Disability-free survival. These measures include the ability to communicate, the ability to see, requirement for tube feeding, total incontinence, wheelchair dependence, and the loss of voluntary movement. You can imagine the profound impact the loss of these functions has on patients and their families. The label for Skysona includes a boxed warning for hematological malignancy, as three boys treated in our clinical trials developed myelodysplastic syndrome, MDS, which is believed to be caused by insertion of the Lenti-D vector. In July, we reported two additional cases of MDS in patients who were treated in our clinical studies, bringing the total number to five cases. Given the known risk, we do anticipate additional cases may occur. Nevertheless, we continue to believe that Skysona remains an important therapy for patients who have no other treatment options. Given the difference in the vectors, we do not believe this is any read-through into our broader LVV platform, including Zynteglo or lovo-cel. The rest of 2023 and the beginning of 2024 are shaping up to be an exciting time for bluebird. For Zynteglo and lovo-cel, we continue to aim to scale to 40-50 QTCs by the end of 2023. For Skysona, we continue to anticipate 5-10 patient starts this year. We also look forward to the lovo-cel PDUFA date on December 20th, 2023. As Tom touched on, we are actively preparing for the commercial launch expected in early 2024, if approved. Before moving to Q&A, I want to summarize some key points. First, bluebird occupies a unique strategic position as a leading gene therapy company that's going to enable growth and expansion for years to come. Second, we have a strong competitive advantage, preparing to maximize our 18-month head start against our next competitor, with patient starts accelerating, QTC onboarding becoming more efficient, and projected lovo-cel market share of 50% or more. Finally, with commercial momentum, including 16 patient starts to date and the lovo-cel BLA under priority review, we are on a path to profitability in the near term, anticipate an additional growth and scale over the next 5 years. Thank you for your continued support from Bluebird and for the patients and families we aim to serve. With that, I'd like to open it up for questions and invite Chris and Rich to join us. Operator? Thank you. As a reminder, to ask a question, you will need to press star one one on your telephone. Please stand by while we compile the Q&A roster. Your first question comes from the line of Dane Leone from RJS. Your line is now open. Hi, congratulations on all the progress and, and momentum with the early launches of Skysona and Zynteglo. Could you maybe just expand a little bit in terms of what you're seeing at the top of the funnel with referrals into the current QTC base that you've built up for Zynteglo, and just what you're starting to find out now and more recent trends around that referral process, then translating into patients that start to undergo the process for cell collection and ultimately treatment? Thank you. Yeah. Thanks, Dane. Good morning. I'm going to ask Tom to answer that question. Yeah. Hi, Dane. Good morning. As we've talked about historically, all of our QTCs are a little bit different. In some cases, QTCs have their own pent-up demand of patients who are excited about Zynteglo, and so they're actually working through their internal patient load before they're starting to think about accepting referrals from outside the QTC. Other QTCs are both actively treating patients within their QTCs, but also taking referrals from outside the QTC. As you can imagine, it's exciting for the QTCs to be offering, you know, first-of-its-kind gene therapy, but also exciting for patients. The process does take some time. It takes time to get through patient identification and then the medical workup, and then to get enrolled into the program. We're, we're excited to see both, QTCs burning through their initial patient loads, but also starting to think about referrals from outside their QTCs. Great. Thank you. Thank you. Your next question is from the line of Jason Gerberry from Bank of America. Your line is open. Oh, hey, guys. This is Jason. Can, can you talk about what is the learning so far in the launch? What, what's been the biggest barriers as you go from collection to infusion? Like, are you losing any patients, and if so, why? Have you guys discussed with payers the value-based model that you use with Zynteglo and lovo-cel as it pertains to the sickle cell end market? I'm just kind of curious, given the larger end market in sickle, is that, is that the preferred approach from payers? Thanks. Good morning, Jason, and Tom, again, if you would take that question. Yeah. Just to start with the funnel, Jason, good morning. We aren't, aren't really seeing a lot of patients fall out of the funnel, so to speak. What we're seeing is that, a lot of this will depend on both the, the physician's schedule and the patient's schedule, because beta thalassemia is not necessarily an acute disease. That, that allows for some flexibility with scheduling. So in most cases, when we see patients enter the funnel who are interested, they don't necessarily fall out. It just, it just takes a little time for them to get through the treatment process. In some cases, that happens relatively quickly. In other cases, patients will schedule around a major event like a wedding or, or, you know, a dance or something like that, that they want to get through before they start treatment. Again, it's a small end, so we're not ready to make huge predictions on fallout%s, but right now we're encouraged because we're not seeing a lot of patients fall out. They just take time to get through the treatment process. Moving on to the value-based approach for sickle cell, you know, we're, we're extremely thrilled with how the process went for beta-thalassemia with Zynteglo, and we've received a lot of positive feedback from payers, both government payers and private payers on, on our approach. The, the approach for Zynteglo will not be the same approach that we're taking for sickle cell disease. We've done a lot of work with the same payers to understand what might work in a, in a population that's a much larger population with different, you know, clinical expressions and different outcomes. We're excited to say that we've finalized the details around what our outcomes-based agreement is going to look like for sickle cell. We, as you might understand, are not going to share those details at this time, but we'll share more details as we get closer to approval. We believe that an outcomes-based agreement that fits the purpose for payers and for patients with sickle cell disease is absolutely necessary. Got it. Can, can I, can I squeeze in a follow-up? Sure. The comment on gross margin, 70% or higher, I, I guess I would have assumed that the pricing that you guys have, that, that maybe it might have been a little closer to 80%. Can you talk about the royalty stack on Zynteglo and lovo-cel? I know there's, like, a number of different entities, low single digits. I wondered if you could sort of give us a sense of how much the royalty stacks are on, on those two products in cumulative? Let me go hand to Tom, who will then, and have him comment then Chris. Yeah, just, just to remind you that with Zynteglo, folks, well, Skysona is, is pretty brief. With Skysona, we are not discounting or offering any outcomes-based agreement. There is a Medicaid discount of approximately 17% for pediatrics in Skysona. With Zynteglo, we, we did offer an outcomes-based agreement that was tied to transfusion independence. It was a very simple outcomes-based agreement, where if a patient did not achieve transfusion independence or maintain transfusion, transfusion independence, we would rebate up to 80% of the cost. Again, it was just a one-time upfront payment and then a rebate if a outcome was not achieved or maintained. Keep in mind that our Clinical Trial is approximately 90% of patients achieve transfusion independence, and of those who achieved it, 100% maintained it. I, I'm giving you a little bit of background there because we don't expect there to be a huge impact on gross-to-net for Zynteglo and for Skysona. Before I turn it over to Chris, it's, it's too early to comment on sickle cell disease with lovo-cel. Chris? Look, as it relates to your question on royalties and milestones, I don't think that that's going to be a material component from a go-forward basis. There will be commensurate milestones that you saw Q3 of 2022. We had milestones associated with approval. The royalty drag on these products are not gonna be significant as it relates to your modeling. Your next question is from the line of Eric Joseph from JPMorgan. Your line is open. Good morning. Thanks for taking the questions. I guess just clarifying, the, I guess, the revenue breakdown for this quarter. Can you just kind of articulate how many patients are reflected in the $6.8 million? What, if any, latency there is between perhaps a patient being treated and revenue recognition this quarter? I guess just say, just tracking sort of the cadence of new patients coming into cure, it seems like you've added four new patients this past month since your prior corporate update. I'm just wondering whether we should expect this cadence of new patient adds to continue or accelerate, perhaps, going into second half. Thank you. Let me, good morning. Let me, let me take the second part of that question first, just quickly, and then I'll pass it to Chris to comment on the revenue. We do expect to see a linear growth over time. We're not gonna, we're not forecasting out right now. We're not operating, but we do expect a linear growth as we had predicted for this launch, and that's what we're seeing right now. Chris? Look, we're encouraged by the revenue that's recognized. However, I want to remind folks that the KPI for the company is really patient starts, and that's where we want to continue to focus your attention, given where, where we are in the progress of our launches. So we see continued growth as it relates to our patient starts with both ZYNTEGLO and Skysona. We're not gonna report exact by-product infusion numbers. Just as a reminder, certainly as Andrew and Tom has touched on, patient starts, you know, will ultimately then translate into revenue at some point in time. That's why the KPI for the company that we're providing to the investor community is the patient starts. Okay, got it. Quick follow-up, if I could. Just given the incremental co- color we've had on the, the LASL review cycle, I'm wondering if you've similarly been notified about a potential AdCom for, for lovo-cel. I guess, what's your expectation of an AdCom throughout the current review cycle? Thank you. Yeah. At this time, the FDA has not requested an advisory committee meeting. Okay. Appreciate the taking the questions, guys. Thanks very much. Thanks, Eric. Your next question is from Gina Wang from Barclays. Please ask your question. Thank you. Maybe I'll just follow up also regarding the AdCom question. When was the last time you discussed with the FDA? Also, when will be the next time you will be talking to FDA? Then, regarding, I still wanted to understand the exact timing, you know, for the patient received the starts forms, until, say, the drug product complete. Usually, how long does that take? You mentioned 70-90 days. That's test, from test to completion of the manufacturing. If we counted it from the start form, how long does that roughly estimate that will be? Then the third question, quickly, is the Skysona. You did mention that there is a five patient has MDS events, or the, the, the patient community well understood this is a Skysona specific risk, and, you know, there is no label or anything, you know, comment on the potential risk with Zynteglo, or hopefully in the future, not in the label for lovo-cel as well. Gina, let me break those down. On the first one, in, we're not gonna comment on back and forth the FDA. We just, we just don't comment on when, you know, when our, our cadence communication is there. All we can say is, at this time, the FDA has not requested an advisory committee meeting. I'll hand it to Tom to talk about the time from the patient start forms to the drug product manufacturer, then I'll comment on Skysona. Go ahead, Tom. Yes. Hi, good morning, Gina. What we're seeing is that the most predictable part is clearly the time from cell collection to the time of drug delivery back to the hospital, which is the 70-90 days on average. What we're seeing on the front end and on the back end is there is some variability and some flexibility. In some cases, we're seeing patients who are eager to be treated, that move through that process very quickly. As part of that process, the Qualified Treatment Center has to get a prior authorization from the insurance company to treat the patient. On average, that prior authorization, or PA, is taking about 2 weeks. The other pieces really depend on the patient's schedule and the schedule at the Qualified Treatment Center. The other part that's a little bit variable based on patients and, and physician schedules is after we deliver the drug product, it's up to the patient and the, and the physician when they actually infuse Zynteglo and Skysona. There's a little bit of variability there. However, what we're seeing is that they're, they're motivated to infuse as, as soon as they can for a lot of reasons. Number one, they usually schedule the patients in advance. Number two, they usually have a limited time where they get an approval from the insurance company. Then, you know, just, I, I think everyone is motivated to get through the process. Again, the most predictable part is cell collection to drug delivery. The other parts, we will get more data as, as we mature through our launch, but right now, it's, it's a little bit variable. Thanks, Tom. Going back to Skysona. Skysona uses a different vector than our other therapies. As a result, we don't believe there's any read-through to our broader LVV platform, including Zynteglo or lovo-cel. Just a reminder, there have been no cases of insertional oncogenesis in our other programs. The two therapies are manufactured using totally different lentiviral vectors. The different vectors are designed specifically for expression in different cell types. They utilize different promoters. As a result, they have totally distinct safety profiles. This is well understood by clinicians and the FDA as well. Thank you. Your next question is from Jack Allen from Baird. Please ask your question. Great. Thank you so much for taking the questions. Just two quick ones from our end. I was wondering if you could step back and, and think about the AdCom dynamics as it relates to the FDA and, and provide some historical context. At this point in the cycle, did the FDA, notify you of the Zynteglo AdCom, or, I guess, do you have any historical context surrounding that interaction? Briefly, more of a logistical question. On the restricted cash, can you just make us aware of, of what the restrictions are on, on unlocking that cash and extending the runway? Thanks so much. Yes. Good morning, Jack. I'll take the first part of the question and hand the second to Chris. On the AdCom, we had heard at this time point from Skysona and Zynteglo about the advisory committee. We have not, at this time, the FDA has not requested an advisory committee for lovo-cel. They always could, so that, you know, the, the, the, you know, there, there's no time-bound requirement for the FDA for notification. Chris, do you want to comment- Sure. On the cash? The restricted cash, predominantly relates to letters of credit as it relates to some of our real estate that we occupy. The predominance of the restricted cash relates to an arrangement for a lease for 50 Binney of property in Massachusetts. We leased that from Sanofi. That's approximately $41 million. We subleased that to Meda. In lieu of Meda going direct with Sanofi, which would release the restricted cash, we continued to collect sublease income on that sublease. That sublease income is recorded in other income in our financial statements. Of course, the operating lease is recorded above the line in our operations. The release of the restricted cash is really dependent upon going direct and having Meda go direct with Sanofi, or getting clearance from Sanofi, to release that restricted cash. It's actually tied up until the remainder of that lease expires, absent any agreement that we've got from those two companies, which we are actively trying to pursue. Great. Thanks so much for the color. Your next question is from Salveen Richter, from Goldman Sachs. Your line is now open. This is Aman on for Salveen. Thanks for taking our question. Could you help us understand the cadence of QTC activation? Last quarter, you had announced around 13, and then this quarter it's 15. I guess, is this pace in line with your expectations, and what are the gating factors to getting to that 40-50 by year-end? I just have a second question on just the overall characteristics of the patients that have undergone cell collection. Are they more younger patients, or are there also adults being treated? Thank you. Great. Thanks. Tom, go ahead and comment on the QTC activation and then the patient ages. Yeah. Hi, good morning. It's a good question. Our QTC network was designed, our onboarding process was designed first to establish our network for the launch of Zynteglo, mostly, and then a few centers for Skysona. Then as we moved into our Wave Three and Wave Four activations, obviously we looked at Zynteglo, but the focus is really becoming preparation for the lovo-cel launch and sickle cell disease. We're very pleased to have gotten to 15 QTCs. If you look at the way we've structured the waves, we expect a bolus of QTCs to come on in the coming quarter, and we still feel confident that we'll get to between 40 and 50 by the end of this year. I, I do believe that since the BLA has been accepted by the FDA, that QTCs are indeed more, more motivated and excited about the possibility of having a treatment for sickle cell disease. We're seeing QTCs in general start to move faster. Again, we're excited to see that at least most, all of the Wave One and most, a good portion of the Wave Two QTCs are already treating patients. We feel good about the progress. It's going to plan, and we look forward to scaling to between 40 and 50, between now and the end of the year. Cell collection characteristics. I, I think the, the most interesting thing, I, you know, I'll just say it's too early to give, you know, common characteristics. We've seen a wide range of interest from younger patients to older patients, from, you know, many different states throughout the United States, from outside of the United States. It's, it's really difficult right now to say that there's one or two characteristics that we're seeing when we see the, the interest for, in the future. As we get bigger ends, we might be able to nail down more specifics. Again, it's encouraging that we're seeing a wide range of interest from a wide range of patients. Thank you. Your next question is from the line of Yaron Werber from TD Cowen. Your line is now open. Hi, this is Brendan on for Yaron. Thanks for taking the question. Just a quick one from us, and sorry if I missed this earlier, but, kind of looking ahead to lovo-cel launch, to the lovo-cel launch, really kind of just wanted to get your thoughts on maybe the initial stages of the launch itself. Are there maybe certain patient subsets or, or centers or geographies that you think are particularly low-hanging fruit, specifically for gene therapy, that could maybe kind of crack the door open to broader uptake long term? Really just kind of trying to get a sense of, what your initial sales strategy is for once you hit the market there. Thanks. Good morning. Thank you for the question. We're excited about the lovo-cel launch. We've been really looking at what, what the launch will look like as we study, you know, kind of not only geographically, where patients who have sickle cell disease live and where our treatment centers are going to be activated. Certainly within those treatment centers, you know, anecdotally, there, there's a huge unmet need. In some cases, they, you know, some of these QTCs are doing clinical trials, and they have so many patients, they can't even, they have a backlog just for those clinical trials. They're really excited about having another option available commercially as soon as something is FDA approved, and we look forward to lovo-cel's potential FDA approval. We, we look at a number of things, including probably most importantly, where high patient population for sickle cell disease throughout the United States is present. We look at QTCs who are willing and set up to treat sickle cell disease, and they understand sickle cell disease, so they need at least a baseline expertise, because sickle cell is different than some of the other transplants and other therapies that they've used historically. We look at their commercial viability. And, you know, in some cases, some of the QTCs want to remain clinical trial sites. In other cases, they're pretty savvy when it comes to commercial launch. You know, we plan to have a broad network across the country. Our, our goal is to ultimately, pro- provide access to any patient in the United States who needs to be treated, and the, the, the 40-50 gets us into a close proximity of about 95% of the patient population. All right, great. Thank you. Your next question is from Luca Issi from RBC Capital. Please ask your question. Oh, great. Thanks so much for taking my question. Just a 2 quick one here. Maybe on sickle cell disease, what are your expectations for the label? In particular, do you anticipate that the label will include patients between 12 and 18 years of age? The reason why I'm asking, I believe your competitor does not have patients in that subgroup for the primary efficacy set, at least from the data I have. Wondering if it's plausible that you'll get a broader label than your competitor, and if so, what are the implications for the launch? Then maybe for the runway, can you just remind me, if you do get approved for sickle cell disease, will you receive a PRV, and if so, are you planning to monetize it? Thanks so much. Great, thanks. I'm going to hand it to Rich for the first part and Chris for the second. Go Go ahead, Rich. Yeah. Thanks, Andrew, and thanks, Luca, for that question. Yes, we submitted the BLA for the treatment of patients who are between 12 and 18 and over in that matter. We included patients between 12 and 18, both in our study, HGB-206 Group C, as well as in study 210. For that reason, we have patients who are in that age range and have seen the results from those patients. I'll turn it back over to Chris. Thanks. As it relates to the PRV and given Rich's comment, it's possible we could receive a PRV since lovo-cel BLA was accepted for priority review for patients 12 and over. As it relates to whether or not we'd monetize it, we of course, would look at the market, evaluate the opportunities in the market, and then make a decision based upon what we see there. I don't want to comment today on whether or not we'd monetize it or not, until we know whether or not we'd get a fair price for it. Just as a reminder, the PRV is not factored. Any potential PRV is not factored into our cash runway. Got it. Thanks so much. Your next question is from Jeff Hung from Morgan Stanley. Please ask your question. Hi, good morning. This is Katherine on for Jeff. Thank you for taking our question. We just wanted to ask if there are any learnings from Zynteglo or Skysona or other gene therapy launches that you plan to apply to lovo-cel launch, either in terms of strategy or from an operation or commercial standpoint? Yeah. Hi, good morning. We obviously, one of the big advantages that we feel that we have right now is we have almost a year now with Zynteglo, so we've certainly learned a lot over the last year. Many of those learnings, we believe we can apply to make a more efficient operational process for lovo-cel. I'm not gonna get into all the details on, on this call today, but as I mentioned before, not only is bluebird becoming more efficient and nimble, the QTCs that we're working with are becoming obviously value partners and more efficient and nimble. You know, looking at how we design the QTC network, obviously that was a strategic move on our part to design a QTC network that, that served both Zynteglo and lovo-cel synergistically. Probably one of the most important learnings is, is our how we thought about our value-based approach to setting the price. For Zynteglo, we'll follow that same value-based approach when we think about the price of lovo-cel and, and translating that into access for patients. You know, we learned a lot through the process as we got ready for Zynteglo, about what a innovative payment model could look like. We've taken some of that momentum and applied some of those same partnerships to, to learn about what, you know, an outcomes-based agreement for lovo-cel and sickle cell could look like. It won't be the same, but we did use a lot of the learnings from our first launch and feel that we've gained great momentum, obviously, with the patient community, great momentum with our QTCs, and then feel very confident in, in the way we're thinking about pricing and, and, and outcomes-based agreements for lovo-cel. Your next question is from the line of Mani Foroohar from Leerink. Your line is now open. Hi, good morning. This is Lily on for Mani. Just maybe a follow-up question on the restricted cash link to the property lease. Would you mind reminding us the reminder of time on the lease, and would you expect that to fall within the 2024 kind of guidance for cash runway? Thank you. Okay. I'm gonna ask you to repeat the second question. Let me answer the first, because I couldn't exactly hear you on the second part of the question. As it relates to the first, it's a 10-year lease, and the remainder is approximately seven to eight years. Can you repeat the second question? Second part of your question. That, that also answers the, the second part. Thank you. Your next question is from the line of Yanan Zhu from Wells Fargo. Your line is now open. Hi, thanks for taking our questions. Of the 11 patient starts for Zynteglo, how many of them are from the Wave Two QTCs? Also wanted to ask about the linear trajectory comment. I think, last quarter, as of May 9th, you had 7 patient starts for Zynteglo. This quarter is 11. Could we infer from the linear trajectory comments, next quarter it might be another 4, and so on? A question on the lovo-cel pricing. You made a comment about the ICER suggested price. I was just curious, when, when you make the decision for pricing, is it more to be in, on par with Zynteglo, or would you target a lower price to accommodate the larger patient population? Thank you. Yep, thanks. I'll, I'll take the second part of that question first, then answer Tom for the first part. On price, on lovo-cel pricing, we're just not going to comment yet. It's way too early, and that will be around launch when we discuss pricing. Go ahead, Tom. Yeah, maybe to add to that, you know, obviously, we're going through the process right now. We're going to base our pricing decision on the profound benefits that we believe lovo-cel has, you know, in sickle cell disease. Obviously, it's a devastating disease, and we're looking at, you know, the process similarly, that we looked at the process for Zynteglo. We're, we're in a good place, but again, we're not going to comment on the final price. As far as the launch, we've said all along that it will be kind of linear and gradual. The thing that I'll add to that is it's tied to QTC activations, and I'm not going to give the breakdown of the number of patients coming from Wave One versus Wave Two. The way to think about it is that Wave One QTCs are now, most of them, on to their second, third, fourth patients, whereas the Wave Two QTCs are getting through their first patients. We would expect that to be kind of a build over time, whereas new waves of QTCs come on, they're finding new patients, while the QTCs that have been on for a while are getting through not only the patients that are in the QTC, but also starting to accept referrals from outside the QTC. We're excited about the demand that we're seeing, and we're excited about the momentum that is starting to build. Thanks for the color. If I may squeeze one question about payer mix. If we look at the $6.8 million revenue, could you comment on these, patients are, are paid by government or commercial or a mix of both? Thanks. Go ahead, Chris. Look, the current payer mix, as we've seen it today, really ties to the, what I would say, the onboarding of the QTCs and the function of the patients that they were providing. Currently, we're, we're seeing a little bit higher indexing towards Medicaid, but we continue to believe the stats and the characteristics on the payer mix that Tom had described earlier in his comments. I will just add one thing to that. We've seen, you know, patients go through the process and QTCs receiving reimbursement from both private payers and from Medicaid payers. We're encouraged to see progress, not only with private payers, but with Medicaid. Great. Thanks for all, all the, all the answers. Your next question is from the line of Sami Corwin from William Blair. Your line is now open. Hi, thanks for taking my question. This is Brooke Schuster on for Sami. Given that lovo-cel and Zynteglo follow a slightly different manufacturing process, how do you see this affecting the potential launch of lovo-cel, if any, and do you predict a similar vein-to-vein time? Are there any other ways you expect to execute the launch of lovo-cel differently than the first 2 products? Yeah. Hi, this is Tom. I'll start with kind of the last part of your question and then work my way backwards. You know, the biggest difference with the lovo-cel launch will be how you think about QTC activation. Again, starting from, from scratch or starting with the baseline, it takes months to onboard a QTC, and a lot of that process includes, you know, a legal agreement between us and the QTC and a quality agreement between us and the QTC. That takes time. What we've done strategically with Zynteglo is we've designed our agreements so that they apply to both Zynteglo and lovo-cel. The reason we're trying to get to between 40 and 50 QTCs this year is to both maximize the opportunity for Zynteglo, but to make it a smoother transition and set things up for success with lovo-cel. Meaning that the, the time to get a, a QTC activated for lovo-cel will be weeks, whereas it was months for Zynteglo. So that's probably the first big difference in synergy that you'll see. Operationally, QTCs have learned a lot through the process by administering Zynteglo. Many of those learnings will apply directly to how they think about lovo-cel, everything from cell collection through infusion. And then, and then finally, I will just say that we believe that the vein-to-vein, vein time that you asked about, or the time from cell collection to drug delivery of between 70 and 90 days, will roughly be the same for lovo-cel and for any other ex vivo gene therapy in this space. That's a, that's a part that's, that's gonna be standard and, and hard to change for a little while. There are no further questions at this time. I would now like to turn the conference back to our speakers for closing remarks. Thank you, everyone, for joining this morning. Just to reiterate, we have, we've made really good progress on our launches to date. We're looking forward to bringing lovo-cel to patients as well. bluebird continues to build its position as really a unique, leading gene therapy company in the industry. We look forward to giving you more updates as we progress. Thank you. This concludes today's conference call. Thank you all for attending. You may now disconnect. Have a great day.