Brian Culley
Analyst · NOBLE Capital Markets
Thank you, Ioana, and good afternoon, everyone. We definitely appreciate you joining us on our quarterly call today. This was a highly productive quarter for us in which we reached several key milestones. We continued to execute on our overall strategic plan to grow Lineage into the preeminent allogeneic cell therapy company. And this is our mission because we know of no other company that possesses a comparable patent estate in-house cell manufacturing capabilities and is generating promising clinical evidence in 3 separate diseases, which each represent large unmet medical needs with billion-dollar market opportunities. And so far, the safety data and early signs of efficacy that we've seen with each of our 3 product candidates, support advancing them ever closer toward later-stage trials.
Along the way, we're working to distinguish ourselves among cell therapy companies by putting into place characteristics and attributes of our assets, which reflect greater maturity and commercial viability, and which will set our programs up for long-term success. For example, we invest not only in generating compelling clinical data, but we also develop important areas like pre-commercial manufacturing and improved delivery devices, which will help our approaches be successful in later-stage trials or attract valuable corporate partnerships.
We're also better capitalized than we have been in several years. Our current cash on hand should enable us to reach additional important milestones, which I will discuss today, and which could create significant clinical and shareholder value over the next few quarters and into 2022. As we continue to advance our 3 cell therapy programs and become more widely recognized for our industry-leading position in the transplant of differentiated cells, I believe our shareholders will be rewarded. And today, I will review some of the events which have moved us further along our strategic plan.
First, I will outline some of the milestones we reached recently with our clinical programs and provide a status update on each program. Second, I'll describe some of the future milestones and events that you can look forward to, such as our OpRegen data release in just 2 weeks and our OPC1 program update early next month. Third, Brandi will review our financials. And thereafter, we will open up the line for analyst questions.
As a reminder, our 3 programs are opportune for dry age-related macular degeneration with geographic atrophy, or dry-AMD with GA; OPC1 to improve recovery following an acute spinal cord injury; and VAC2 for non-small cell lung cancer. All 3 of these programs are novel cell therapy treatments. They are not traditional drugs, and they rely on allogeneic or off-the-shelf delivery of cells to the patient. All 3 product candidates have been well tolerated to date with no unexpected adverse events observed. And in some cases, we have indications of unprecedented activity in conditions where there are no FDA approved treatments. We think the data so far support our view that Lineage's cell therapy technology platform has substantial clinical and commercial potential.
We will begin with OpRegen, our product candidate intended to treat dry-AMD with geographic atrophy. Dry-AMD with GA is one of the leading causes of vision loss in the world. We estimate there are nearly 2 million people in the U.S. suffering from the advanced form of the disease, which is exactly the form we hope to treat. The disease is caused by the progressive loss of retina cells. And our approach is to grow and transplant brand-new retina cells to replace the ones that are dysfunctional or have died off. And by doing so, we believe we may be able to not only slow the disease process, but also potentially halt or reverse it.
Based on the large number of people with dry-AMD, and based on the fact, additionally, that there are no FDA-approved treatments for it and the substantial revenue that has been generated by treatments for wet-AMD, which is far less common than dry-AMD, we believe commercial opportunity for OpRegen is at least several billion dollars.
We also believe that OpRegen, which may be a onetime treatment performed in about 30 minutes, has a substantial advantage over the potential competitors which require monthly or semi-monthly injections. To our knowledge, those treatments also have not shown much evidence in clinical trials to date that they can improve a patient's vision. We believe OpRegen can provide this benefit and are collecting data in support of that claim. The OpRegen program is currently enrolling patients in a Phase I/IIa clinical trial at clinical centers in the U.S. and in Israel.
As you will recall, in June, we reported evidence of what we believe was the first known finding of anatomical restoration of retinal tissue in a patient who received a transplant of our OpRegen retinal pigmented epithelium cells, or RPE cells. This is an unprecedented finding because humans lack the ability to regrow or repair retinal tissue. That's the reason why most of our competitors are attempting to simply slow the rate of disease progression. They can't realistically expect their small molecules or their antibodies can rescue affected tissues. However, data from our cell transplant approach supports the hypothesis that OpRegen RPE cells may be able to reverse dry-AMD and potentially rescue tissue in earlier stage patients.
In particular, the patient we treated with our OpRegen cells had end-stage disease yet showed substantial restoration of retinal tissue within the area of GA leading to a 25% reduction in GA area at 9 months compared to baseline. We didn't see this phenomenon in any of the first 12 patients we treated, but those patients had such advanced disease that they were all legally blind, so it's pretty reasonable to assume their disease was too advanced to expect any recovery. But we've more recently moved into patients with less advanced disease and better baseline vision, which is the setting in which we observed this restoration effect in this patient.
We've also hypothesized that this particular patient may have done better than others due to more complete placement of cells over their area of GA. And for this reason, we have sought to replicate this finding in additional patients by delivering the cells more aggressively across the GA. We will be monitoring these more recently treated patients to see if we can replicate this finding, which we believe could disrupt the overall therapeutic landscape in this disease.
In the meantime, please keep in mind that we found this first case of restoration just a few months ago, and it probably takes between 6 and 12 months before you can detect it, depending on how quickly a patient's GA is growing. So we wouldn't have expected to see it this soon in any of the more recently treated patients. However, this does make the coming months very exciting because those more recently treated patients will be reaching the same time frame in which the case of restoration was identified and confirmed by our experts.
In addition to the retinal restoration discovery, we also have observed additional benefits in some of our other patients, including increases in visual acuity, reductions in the growth rate of GA and increases in reading speed. These are additive to the improvements we've previously reported in retinal architecture, drusen reduction and the multiyear durability of this transplant.
Notably, we have not observed a single case of acute or delayed transplant rejection, despite eliminating immunosuppressive therapy a few weeks to a few months after treatment. At one time, it was thought that patients receiving allogeneic cells would require lifetime immunosuppression. But our initial patients were taken off immunosuppressive therapy after 1 year without rejection. And patients treated more recently have been taken off immunosuppressive therapy just a few months post treatment.
We believe the body of evidence we are collecting increasingly supports a new paradigm for what is possible in the treatment of dry-AMD, and is refuting some of the early concerns about tolerance, safety and rejection. It is our primary objective to show that directed differentiation and transplant of OpRegen RPE cells can provide clinically meaningful outcomes in this disease, and do so in the context of a clinical trial, which can serve as the basis for an approval.
We also are exploring ways in which we might improve the delivery of cells as well as the overall surgical experience and ease of use for physicians. To that end, we continue to evaluate the Gyroscope Orbit SDS device as an enhanced way to deliver cells to the subretinal space. As a reminder, this device helps the surgeon place the cells across the area of GA without puncturing the retina. We're interested in this device because it should reduce the incidence of epiretinal membrane formation, or ERMs. And in fact, we've seen the rate of ERM formation drop to 0 in patients we've treated to date with this FDA-approved device.
That's clearly an excellent start, and we intend to continue to evaluate this device, and we plan to have an update on this as well as on OpRegen at the American Academy of Ophthalmology Annual Conference, also known as AAO, which will be held in approximately 2 weeks.
Now speaking of AAO, the reason I'm unable to say much more about our OpRegen data today is that we will have an overall study update at the AAO virtual conference on November 13 and 15. Dr. Allen Ho, one of our investigators from Wills Eye in Philadelphia is including OpRegen data in his talk on the 13th; and Dr. Christopher Riemann, another one of our principal investigators, he's from Cincinnati Eye Institute. He'll be presenting a summary of our updated data on the 15th.
And as a follow-up, we are planning separately to host a call with Dr. Riemann on Tuesday, the 17th at 1:00 p.m. Pacific to provide a forum for more in-depth discussion and to take questions from analysts. This KOL event will be open to everyone. We hope you'll find time to join because it has been some time since we provided a data update on OpRegen, and we know everyone is looking forward to hearing how that program has been doing lately, especially with the COVID-related restrictions.
Moving next now to OPC1, our clinical stage program for spinal cord injury. OPC1 treatment involves manufacturing and transplanting a specific type of glial cell called an oligodendrocyte progenitor, and transplanting those cells directly into the site of a spinal cord injury in order to provide greater mobility and function to patients after a paralyzing injury. We took over this program through the acquisition of Asterias, a company which had generated compelling clinical data, but was never actually able to manufacture the cells in the way which is required to move into subsequent clinical trials.
Part of the rationale for buying Asterias was that we were confident that our manufacturing team at Lineage, which has been wildly successful at manufacturing retina cells, can figure out how to replicate their success with oligodendrocytes. That means our manufacturing team was asked to make improvements to the production process in areas like scale, purity, reproducibility and other attributes, which the FDA requires and which are needed for the commercial viability of a product. The team also needs to develop a thaw-and-inject formulation, just like they did for OpRegen, to eliminate the need to manipulate cells 1 day prior to their administration, which is an excessive burden for a product seeking approval.
All of this work will create a more compelling product profile and lead us to an RMAT meeting with the FDA, which we expect will occur during the first half of next year, and at which we will discuss these improvements we're making to the OPC1 program. Once that meeting is complete, the manufacturing side of the OPC1 program will have caught up with the impressive clinical data generated to date and open the door to later-stage clinical testing. And to that point, we believe that the next study of OPC1 can be positioned as a registrational study, and we will seek to gain agreement from the agency on this path.
Now manufacturing sometimes seems like a black box, and there often isn't much attention placed on that particular aspect of a development program. But I'd like you to keep in mind that we're working with whole cells, not small molecules or antibodies. And some of the things we have been doing behind the scenes during this year are pioneering the field of cell therapy in valuable and proprietary ways. So it's not always in our best interest to advertise them. But with that said, I'm pleased to share today that we plan to provide an update on the OPC1 program in early December with an emphasis on our recent manufacturing achievements. And we think that update will help garner new and positive interest not only in what we're doing in the area of spinal cord injury, but also contribute to the growing body of evidence that the obstacles to widespread adoption of cell therapy are continuing to fall as companies like Lineage bring forward modern solutions to historic limitations.
Moving next to VAC2 for which we recently announced some interim clinical data. This is our off-the-shelf dendritic cell cancer vaccine. Dendritic cells are the most potent antigen-presenting cells in the body. And we harness their activity to deliver handpicked antigens, an approach which is reemerging as an attractive therapeutic modality based on the consistent safety profile and increased knowledge of how to deploy dendritic cells in a clinical setting. VAC2 is comprised of mature dendritic cells, which we manufacture from proprietary established cell banks and load with a tumor-specific targets or antigen to instruct the body's immune system about which cells it should attack and eliminate. And by using dendritic cells to educate your T cells to seek out and destroy cancer cells, VAC2 acts like a highly trained booster for your immune system.
Now during the third quarter, we announced encouraging preliminary results from our ongoing Phase I study of VAC2 in patients with non-small cell lung cancer, and specifically, VAC2 demonstrated potent induction of immune responses in all 4 patients tested to date, providing us with mechanistic validation and reinforcing the data obtained in the VAC1 clinical trials.
Antigen-reactive pentamer staining induced by VAC2 and supported by ELISPOT data suggested that our vaccine is highly potent, inducing significantly higher levels of antigen-specific T cells compared with the levels invoked by alternative approaches such as DNA- and RNA-based vaccines. A particular note, 1 of the 4 patients experienced a radiological response following chemotherapy subsequent to VAC2 treatment, which the primary investigator was highly enthusiastic about. While this clinical response was anecdotal and occurred after the patient had completed the VAC2 study, responses in this setting are rare and clearly support further investigation.
So on the basis of these early findings and following completion of the ongoing clinical study, we believe the best path ahead for VAC2 may be to evaluate it in combination with therapies considered biologically synergistic to a dendritic cell vaccine, such as chemotherapy or the immune cell protectant properties offered by anti-PD-1 checkpoint inhibitors.
As you probably know, several pharmaceutical companies are generating billions of dollars of revenue from anti-PD-1 checkpoint inhibitors but nonetheless, are still running combination trials of their drugs, along with other treatments to try to obtain higher efficacy because not all patients benefit from checkpoint inhibitors alone. We believe VAC2 could be an attractive option in a combination trial of this kind because of its expected high level of tolerability, and its potential to increase efficacy by elevating the patient's immune response after the cancer has been made susceptible by the checkpoint inhibitor.
While the VAC2 program continues to enroll in its ongoing clinical trial in non-small cell lung cancer, we have a number of improvements and modernizations we'd like to make on the manufacturing side, which can help prepare VAC2 for later-stage trials and provide competitive advantages for any future VAC programs we may design. For this reason, we have directed the manufacturing team to begin working on production enhancements to increase the commercial appeal and utility of the VAC platform.
Although our partner, Cancer Research UK, collected some valuable clinical data, just like Asterias did with OPC1 for spinal cord injury, Cancer Research UK did not have the process development expertise to develop the necessary improvements to the program. A process development is a core competency for Lineage. So in order to fully exploit the potential of the VAC platform, we intend to modernize its manufacturing profile just as we did with our OpRegen program and just as we are doing now with our OPC1 program as I discussed earlier.
As part of this manufacturing enhancement, we also aim to enhance the flexibility of the VAC platform because you could theoretically insert any number of antigenic molecules into the dendritic cells. That means the VAC platform is capable of producing nearly a limitless number of product candidates, each one distinguished only by the specific antigen which the dendritic cells are carrying. You could select those antigens using artificial intelligence, you could select them empirically from animal studies or you can use combinations of multiple antigens from across different tumor types.
So conceptually, this approach also opens up a large number of potential corporate partnerships by allowing us to use our dendritic cells as carriers for other companies' antigens, while simultaneously retaining the option to advance our own carefully selected antigens. This platform approach could permit us to generate a pipeline of different product candidates targeting many different types of cancer. And we feel this product platform nature of VAC will enable us to become a much more prominent player in the immuno-oncology field in the coming years, especially as we validate and mature the production process, scale and other important commercial attributes of VAC, while awaiting further clinical data from the ongoing Phase I trial, which is currently being conducted by Cancer Research UK.
So as we've said, all 3 of our clinical programs are seeking to address high unmet medical needs, representing large market opportunities. Patients currently have few or no approved treatments available to them for these severe conditions so we're very excited about the clinical data we have been able to generate so far. Our additional focus on enhancing and modernizing our manufacturing processes, serves as an additional barrier to competition and makes us capable of advancing these products more quickly through later-stage trials. Modernizing the production processes also opens the door to potential collaborations with larger corporate partners. And this total development approach is part of the mission we took on 2 years ago and have been working toward it ever since.
The reason for our focused investment in cell transplant therapy is that we believe the ultimate safety profile of our approach, and our unique efficacy observations such as retinal restoration and reducing cavitation after spinal cord injury, provide better chances for success in late-stage clinical settings than do traditional approaches. And as a reminder, we make no genetic modifications to our cells, and we focus in areas of low immunogenicity, such as the eye and spinal cord, which may avoid outdated concerns about these treatments. We always look for ways to move faster, but at least over the last 2 years, this team has consistently produced positive news, and we'll strive to continue this record as we advance these programs.
So turning now to upcoming milestones and events, which we think you will want to keep an eye on. First, we will be providing new interim data from the OpRegen clinical trial at the AAO conference in just 2 weeks. There are 2 presentations at AAO which will include OpRegen data. That data update will be followed by a publicly available KOL call on the 17th with one of our principal investigators. And we hope that interested investors will tune into that call, which we think will be helpful to further understand the promise of the OpRegen program.
Second, in the first week of December, we plan to provide an update on manufacturing improvements, which we've made to the OPC1 program, which should facilitate its commercial utility and regulatory path.
Third, we expect to complete enrollment of the fourth and final patient cohort in the OpRegen study before the end of the year.
And then finally, early in 2021, we expect that CR-UK -- excuse me, that Cancer Research UK will be able to treat the final 2 patients in the VAC2 study and complete enrollment in that trial. So we have a considerable amount of value-creating news coming up, and I think this will help us up -- help us be set up for a very successful 2021.
We believe further that we've been demonstrating with each quarterly report that Lineage is making excellent progress with its 3 cell therapy programs, basically converting what was once an academic science into compelling and rigorous clinical data. And I'm also pleased that we've been able to make this progress over the past several years without diluting our shareholders with capital raises at unattractive valuations. And as Brandi will discuss in just a moment, we're still well capitalized into 2022.
As we continue to advance our programs through their current trials and prepare them to enter later-stage clinical trials, we think Lineage is on the right path to create enormous value for patients and for shareholders.
So with that, I will hand things over to Brandi to review our financials and discuss some additional plans we have for this year.