Matt Coffey
Analyst · Ladenburg. Your line is open
Thanks Mike. Good morning everyone and thanks for joining our call today. I will just direct you to our forward-looking statements, and we will be making a number of these forward-looking statements. And I wanted to start the call by just reminding everyone of what a tremendous year it’s been 2018 in terms of making progress. It sets the stage for what we believe will be a transformation in the company in 2019. We wanted to provide an overview on our thinking now that we’ve had more feedback on the Phase 3 with KOLs, pharma partners and our current thinking about biomarkers and how we think we’ve identified potential markers that will predict for overall survival in various patient populations by better measuring the immune response to the lysis for the tumors. We’ll give an update on our metastatic breast cancer program and how we are positioning it for the Phase 3, some guidance on our immune checkpoint program and why we think it’s such a pivotal time in oncolytic viruses and how pharma is trying to position these agents as we move to registration. Now the emerging role of Pelareorep, I wanted to start off, we’ve had a lot of questions, people have asked me, you know, Matt why are you not using REOLYSIN anymore as the name of the product. And the reason for this is, in our interactions with the FDA during our special protocol assessment; it came to their attention or one of the reviewer’s attention that’s the name REOLYSIN rhymes with the existing chemotherapeutic bleomycin, so REOLYSIN/bleomycin. The concern was this may lead to dosing errors, transcriptional errors if the pharmacist misread REOLYSIN to bleomycin there was a chance that it would lead to misdosing the patients. What the FDA requested is that we use the generic name or the user name pelareorep to avoid any confusion, and frankly the marketed name, I believe, will be likely in the purview of our strategic partner, who’ll want to name it, to be consistent with their existing franchises. So as a go-forward, we refer to reovirus as our proprietary strain is pelareorep until such a time as our strategic alliance renames the product. But the benefit of a generic name is, it’s not subject to change and it is specific to our strain and reovirus, so we’re quite happy to use that. Now the emerging role of pelareorep, I think over the last 24 months, we’ve been able to reposition our agents as what’s going to become a very important segment of immuno franchise, hopefully for the treatment of breast cancer, but certainly beyond that. Now where we think, we have the most interest is in metastatic breast cancer, due to the fact that we’ve seen a significant increase in overall survival in this patient population. As a result of this, we went and presented data to basically every pharma company as we’re hoping to get a strategic partner to run the Phase 3 with us. Our thinking is, we would like to do this in conjunction with pharma, so that we could retain a co-promote for North America. But while we were having these discussions, we opened the data room up and people went through. So what began to emerge was a picture not only of our virus, but other viruses as a backbone or a standardized backbone for immune checkpoint inhibition. And these interactions through BD resulted in committed relationships now with Roche, and metastatic breast cancer to the point of this will be to develop or confirm our biomarker thinking as well as to suggest whether or not we should add a third arm to the existing SPA. We have two collaborations with Merck, one in pancreatic, which I’ll touch on today. We believe we’ve started enrollment. We’re waiting for a confirmation, but also a second study in multiple myeloma. We have a collaboration with Bristol-Myers Squibb and Celgene, both of these also in multiple myeloma, which is an excellent test system for our agent in heme malignancy. Now last year, we established a partnership with Adlai Norte. They’ve in-licensed new products as well. And we’re looking to see these studies starting in China here very quickly. But really the thinking is, these agents, our significance in engaging the immune system through the creation of their genome and through their infection process in our particular instance, the viral double stranded RNA, promotes an inflamed phenotype and we’ll touch on this and why this is so important. But I think this is the first time and we’ll touch on the deals that have been done, large pharmas finally paying attention to this area. The reason, they’re thinking this is so important is largely due to the fact that it seems there’s a good rationale for combining viruses with checkpoint inhibition. And we’ll touch on why this has been so difficult. Combinations of checkpoint inhibitors have been toxic, combinations with checkpoint inhibitors and IMiDs in [indiscernible] has been toxic, but the safety profile of the viruses, and especially our virus with a database that suggests there really is no side effect is very compelling. The fact that we can stimulate a pro inflammatory response or basically lighting up the immune system to the presence of this tumor is very significant. And there is a very strong rationale for why we’d want to combine this with checkpoint blockade. Now, when people think viruses, I think your first thought is to run to HIV it’s to run to the flu. But most viruses don’t actually cause illnesses, or if they do, its species specific, so the human interaction with them is very minor. But when people think gene therapy Oncolytics viruses, they immediately get into the thinking of intratumoral injections and this has led to an approval with T-VAC it’s a very important agent, but the difficulty with intratumoral is, it’s a specialized delivery system and it lends itself only to accessible lesions. Cancer unfortunately is a metastatic disease, so we need to be able to treat beyond an injectable lesion. Our [ph] viruses are also significant segments where we have existing viruses, and we add checkpoint inhibitors to them. We add immune stimulatory agents. Pelareorep is a little bit difference, it’s an IV administration, so it’s a standardized dose, and because it’s not modified, it doesn’t require special handling procedures. Now, importantly, it’s an unarmed virus as we don’t carry agents that would stimulate the immune system. Instead we rely upon the virus’s innate ability to infect preferentially or pardon me, replicate preferentially in tumor cells that really lead to this engagement of innate adaptive response and we’ll talk about this now. Now the thinking of reovirus has evolved somewhat. We’ve talked about this before, but you know when we started this program everything starts in a tissue culture plate, and the virus is very, very good at lysing tumor cells but not normal cells. And the reason for this was basically recognition of the virus genome in normal tissue. So reovirus is a poor pathogen, because when it enters the cell, it removes its outer coat so that it can start making copies of its genetics, and make copies of itself. Now the genome of reovirus is double-stranded RNA. So as the cell, as the normal cell allows the virus to start making copies of its genome, it’s immediately seen by the immune system. Now double-stranded RNA is a very important signal to the immune system, and it’s so important in fact, that your body has evolved mechanisms to block protein translation. What I’m saying is, it’s able to block the virus making protein copies of itself and it does this through a protein called PKR which will bind these double-strand RNA elements and stops the cell from making more copies of protein. Now PKR is called a pattern recognition receptor, and these are a very old form of our immune system. What they are is proteins in the cytoplasm that recognize microbes through their genetics, through flagella through various basically patterns, if you want, hence the name pattern recognition receptor. Now PKR recognizes double-stranded RNA and blocks protein translation. This is the first step in preventing viral spread. Now, other pattern recognition receptors also recognizes double stranded RNA, and this is again why double-stranded RNA is such an important signal, the body recognizes it as non-self, and in an effort to block any infection these pattern recognition receptors, when engaged with double-stranded RNA begin a cascade of signals that result in the immune system basically being very strongly shaken to life. Agents or recognition receptors like MDA-5/RIG-1, Toll-like Receptor 3 and PKR work in concert to cause a release of interferons and other chemical danger signals that are pro inflammatory. This is a really quick way of blocking the infection. Now in tumor cells, the steps are very similar, but we have a non-functional PKR. So what happens is the virus will internalize in these cancer cells, it will start making copies of its double-stranded RNA genome. But here PKR can’t block the infection; it’s unable to stop translation. So what happens is the virus is able to make basically a photocopier of itself. It’s something that creates more of the genome, and it’s called an RNA to RNA polymerase. Now this is a very active little enzyme, and it starts creating pools of double-stranded RNA in the cytoplasm, and as the cells become infected, make copies, and lyse, what we’re getting is very high accumulation of double-stranded RNA within the tumor. Now as a result of this, we get a release of these pro inflammatory signals, and this is where we see our side effect profile. As the patients are releasing interferon, we’re starting to see the patients become unwell. We’re starting to see fevers, malaise, aches and pains. But importantly, if we look at the immune system, what we find is an increase in our natural killer cells. Now these are our innate response. These are drawn to the site of infection and again, what they’re trying to do is restrict viral growth and limit viral spread. So these chemical signals coming from the tumor now alert our NK cells that there is a problem and they’ll come to the site of infection and wll do their best to eliminate the infection by targeting and killing these infected cells. Now as a consequence of this, what we get is maturation of dendritic cells and T cells that also become drawn to the side of the infection. But here what we've done, is the T cells are expanding and their learning to recognize tumor epitopes and viral epitopes and what this results in is a learned immune response in animals that are cured of their disease, we can't re-implant the tumor. So, we used to think of this really as a lytic response. That’s importance. But really what’s important is the selective replication of the virus within tumor cells and the creation of the danger signals that alert our immune system that there's a very significant problem. The release of these interferons, the release of these pro-inflammatory signals to create cold tumors hot, but also side-effects of this double stranded RNA are over expression of PD-L1 on tumor cells, overexpression of PD-1 on T cell and really this is why we think there's going to be strong synergies with immune checkpoint blockade. This is actually changed our thinking also around how we measure those responders. And what we've done now is we think we've identified biomarkers of immune activation that correlate with overall survival and we’ll talk a little bit about the importance of these biomarkers and why we need to confirm these prior to the Phase 3. Now the metastatic breast cancer program, this is our shortest path to a registration study is our thinking. We’ll give a quick update on this plan and again just provide assurances is that this is the Phase 3 company; we have Phase 3 assets, we are doing some supplementary data with strategic partners to confirm our thinking around biomarkers and to provide a recommendation whether or not our existing SPA program should include checkpoint blockade or not. Now, this thinking for this came for a study that our colleagues at the National Cancer Institute of Canada ran and what we saw here was a dramatic increase in overall survival. Now, in the intention-to-treat group, this is everybody on study. We saw seven-month improvement in the median survival, so patients historically would survive 10 months. These were moved out past 17. So this is significant for patients. This is time spent with family and it's not a PFS benefits, it’s an overall survival benefit. We've actually extended life. Now, what’s important about this also is it gives some important clues about how our agents working. When we look at the control arm, I think there’s three survivors overall out of nearly 40 patients. When we look at the test arm, what we get is, third of the patients are still live at the time of the analysis and importantly there's a delayed separation in the curve. This has become a recurring motif for a common type of observation in the field of immune oncology. And the reason for this is it takes some period of time for our T cells to expand, to recognize the new tumor epitopes and to basically position themselves to control the disease. In our instance here it takes about eight months, this is very similar that you see with checkpoint blockade. Now, this really affected some of our thinking. So when we approach FDA and when we approach DMA we went with the existing package and we said this is the data that was generated by the National Cancer Institute and the guidance that we were given back is your agent is not acting predominantly cytolytically, but it's acting as though it's stimulating innate and adaptive responses. Now the biomarker work we’ve since develops confirms this, but one of the concerns that FDA expressed to us was without an effective biomarker we couldn't identify early responders and we couldn't stratify for patients that would respond versus those that wouldn't. Now this is a significant hindrance to successful Phase 3 because you’re trying to just emulate results you saw on Phase 2. With the biomarker we can further refine and stratify for responders based on what we think is early immunological evidence of response. Now, I’m going to talk a little bit why this is important later, but the addition of a biomarker significantly derisk our Phase 3 program, and potentially shortens our regulatory timelines by significant margin. Now not only did the FDA point this out as a potential risk and very strongly encouraged us to capture this data in the Phase 3, potential partners were cautious about moving into a Phase 3 without a biomarker. In this day and age large pharma has bet a lot of money in the world of biomarkers, as example, Rosebud Foundation medicine the entire company to more sprightly and adaptively be able to come up with biomarkers through their various programs. Now, as I said this data led to a lot of BD outrage, and it end up with a lot of people in our data room. And the question that kept coming up, if the virus is causing such an inflamed phenotype, is there reason to think that they should add checkpoint blockade to the breast cancer program improving the outcomes to those patient's on reovirus but also expanding the franchise with checkpoint inhibition. And if you look at the next slide this really speaks to why Pharma thinks there's a role for pelareorep as a backbone for checkpoint inhibition. Now checkpoint inhibition is I think the most significance step forward in immune oncology. The ability to unclog the tumor, the ability to re-energize our own immune systems, to combat our disease is more than significant. The difficulty is though it requires prerequisites. Patients have to have a certain amount of immune status left after pretreatment. They actually have to have those inflammatory cells at the site of the tumor, so that they could actually be active and the tumor cells themselves have to have PD-L1, the receptor expressed if these antibodies are going to be able to work. Now, as I said, double stranded RNA is a very significant danger signal in mammalian cells. And what we’re looking at here on the left is a patient's bone marrow smear prior to any treatments and you can see that there's very little expression of PD-L1, we’re using an antibiotic here to stain for that. Now this patient receives one cycle of pelareorep with carfilzomib which is the proteasome inhibitor, which is the combination, we’re actually using the Bristol-Myers Squibb study. And what we can see in eight days, so from one Monday to the next Monday we go from zero expression of PD-L1 to nearly 98%. Now commensurate with this, we see an accumulation of NK cells in the tumor that’s statistically significant. We see a statistically significant increase in T cells. We see changes in the microenvironment, not only do we get PD-L1 overexpression, we get CTLA-4, IDO, we get release chemokines and cytokines and we basically set the tumor up for response to checkpoint blockade, and I think this is what exciting. The virus stimulates immune system so well that we can get overall survival benefit. We saw that in breast-cancer, but potentially we can even amp this up further by adding checkpoint blockade to it. Now this type of data is what has -- pharma very very excited about oncolytic biotherapy and it was exactly data like this that led to Merck's acquisition of viralytics. It was Phase 1b data that demonstrated quite a profound inflamed phenotype and stimulated the acquisition of the company. So, we’re talking significant sums of money for any agents that can synergize in this checkpoint blockade area. Now our registration strategy is still tied very much to breast cancer, but it does contemplate whether we should add checkpoint blockade to that. Now, we have a window of opportunity study that will begin first quarter, very early in first quarter and this was actually in response first off to a collaborative group called SOLTI and later it actually expanded into work we’re doing with Roche in the area in terms of adding to Tecentriq to this important area. Now we approached Aleix Prat, who is now one of our KOLs with the results of the Phase 3 to see whether or not we can get their cooperative group which has I think over 70 centers in Spain, Portugal to participate with the study. Dr. Prat is internationally recognized as a leader in breast cancer. He helped with the thoughts around the Phase 3. But again one of the things that he highlighted is we didn't have an effective biomarker plan. We weren’t able to tie overall survival to changes either tied to mutational status on the tumor or what we think now is we’re importantly changes in our immune repertoires, our activation levels of the immune both innate and adaptive and tying this to overall survival. Now what Dr. Prat proposed to us was a window of opportunity study and what this is a study where women are treated for three weeks with standard of care across various subtypes and we add the virus to this. At the end of that single treatment cycle they go for radical mastectomy and what this allows us to do is capture the tumor tissue to see the changes of the virus has evoked in the immune system and whether or not it has increase the inflammation in the tumor. Now, we have before reported very good objective responses in patients with hormone receptor positive HER-2 negative disease and in that subgroup of patients we actually saw near doubling of overall survival, and that’s why this has been the focus of our Phase 3 work. The AWARE study will look at those patient population and we believe what we will see is an increase in inflammation or an increase in NK natural killer cells or T cell into the tumor tissue at the time of the mastectomy. Now previously we’ve reported no activity in triple negative breast cancer, albeit it in a very small subset. What we believe we see, what we will see in the triple negatives are accumulation -- no accumulation of inflammatory cells compared to the hormone receptor positive group. Now interestingly we don't have any experience with HER-2 new. These patients are normally treated with Herceptin. This could be potentially new market for us or it could indicate that we should really focus on hormones receptor positive disease. Now, the biomarkers are really driven around immune markers in the blood. And as I said we believe we've identified one very strong and potentially second biomarker that could identify patients responding to therapy as early as cycle two-day one. What this allows us to do is to set a threshold to say whether these patients are responders very early and further stratify for these patients on the study. This significantly derisks our Phase 3 program and the AWARE study should confirm whether or not the changes in immune status correlate well with inflammation in the tumor. Now during this, Roche became aware of the program, became aware of some of the biomarker work and actually expanded our thinking on the biomarker work. And they reached out us to say, we think checkpoint blockade based on what we know with your agent should increase the activity. So half these patients will receive Tecentriq, half of them will not. And what we want to see in the presence of checkpoint blockade is even greater accumulation of these inflammatory cells, and again defining the safety signal for us in the phase -- leading into the Phase 3 program. Now where does this lead us? If anything it enhances our commitment to the Phase 3 this SOLTI program as I said is 38 patients, but because they’re only treated for three weeks there’s no follow-up, it’s a biochemical test within pathology, so it's going to go very rapidly. We anticipate this will be finished by next summer with an enrollment period of anywhere between three to five months and this is based on work that SOLTI have done in similar studies before. So with our Phase 3 we have an improved SPA and what this is, is guidance from the FDA that if we meet the predetermined endpoints we can register the product for sale. Now the window of opportunity study, why it's so important is really to confirm a couple of things first and foremost we need to confirm its acting as an immunotherapy and this will be confirmed by accumulation of immune cells within the tumor mass. So again what we’re hoping is this release of interferon from the infected cells, the danger signal of the double-stranded RNA will cause natural killer cells and T cells to be drawn to the site of infection predominately in hormone receptor positive disease. What we’re also looking for is increased expression of immune markers like PD-L1 on the tumor cells or PD-1 on T cell as well as CTLA-8, IDO and others. What we’d also like to do is capture whether or not Tecentriq or checkpoint blockade enhances this inflammatory response. And lastly, we’re going to confirm what we think our biomarker thinking is now that we’ve had some success and we’ll be reporting in this biomarker work first quarter next year. If this is the case, its significantly derisk the Phase 3 program and really does is provide some guidance to us and our potential phama partners as to whether we want to change the existing SPA and add a third arm of adding the checkpoint inhibitors. So what we’d look at is standard of care, standard of care plus virus, Standard of Care plus virus plus checkpoint blockade if it’s recommended by what the outcome of the AWARE-1 study is. Now it’s entirely possible that we’re just going to find that we should proceed as is under the existing SPA. But what it also gives us is confirmation that a biomarker is active. This as I said, we believe we’ll shorten our reg development times, as well as even some of the clinical times. And again going forward potential pharma alliances were very concerned that we didn't have a biomarker. We now believe we have one and we’ll be able to test that I think very effectively in the AWARE-1 background. But this sets the stage for the Phase 3. It derisk it. It’s a potentially speeds it up and in either case we think it significantly enhances the chance of this Phase 3 is going to be run with a pharma partner either with or without checkpoint blockade. Now, all this work that people have done in reviewing our due diligence room [ph] has led to a lot of BD outrage. So this BD outrage in metastatic breast cancer is actually created opportunities beyond metastatic breast cancer and into the use of immune checkpoint inhibitors, which appear to be where pharma really want to position these agents, and we’ll talk about that in a moment. Now our clinical pipeline really starts with a Phase 3 program. And as I said right now the thinking is going to be pelareorep with paclitaxel, which is standard of care we may wish to add a checkpoint inhibitor to that. This is going to be informed by AWARE-1 which our pelareorep standard of care plus Tecentriq. This will begin a very early next year and will be done by summer. This is the gating study for the Phase 3. It provides us a supplementary data and confirms our biomarker thinking. Now pelareorep in pancreatic cancer, as I said we’re excited. We think it actually began enrollment today. We’re waiting for confirmation, but that's how soon it will be starting, if it’s not this week it will be in the next week or two. But again we’re now underway with our pharma colleagues to really investigate and exploit the use of the virus with checkpoint blockade. Pelareorep with Keytruda and multiple myeloma will begin next quarter, and pelareorep with Opdivo we think we’ll begin this quarter. We have ongoing studies with Celgene, but again all of these are open-label studies, all of these are to inform Pharma of the potential utility of the virus as immunotherapy a standalone immunotherapy but importantly potentially a standardized backbone across checkpoint blockade and across other areas including CDK 4/6 as well as PARP where we’ve recently reported some positive synergistic data. All of these studies are open-label and provide real-time information to our potential partners to make informed decisions. We’re looking to potentially see interim data in multiple myeloma for the end of 2019 as well and we’ll be reporting on some exciting results at ASH in multiple myeloma that we believe will provide a strong rationale for adding checkpoint blockade. Now we've been working at this for a while and if you look at the market environments it’s really led to a period where there is a lot of excitement around checkpoint blockade. Now Amgen open the door with the acquisition of BioVex. That was Phase 3 material. Now Merck acquired viralytics, and I like the viralytics story because it's similar to ours. It's an RNA virus that creates double-stranded RNA transcripts which signal the immune system and causes a pro-inflammatory cytokine response. Now the difference here is their approach largely focused on intratumoral or intravesical that is a delivered it into the bladder for bladder delivery. Our focus is systemic. It’s a similar story in terms of it promotes a pro-inflammatory response. It causes lysis. It causes immune system activation. It’s also a wild type virus. So I think there's a lot of parallels that can be drawn. I'm a big fan of their management and their science behind it. And again, I'll point out that this was acquired for 396 million based on Phase 1 data. This is how Pharma values these agents where are these agents going. Now other recent sort of acquisitions or partnership has been AbbVie Turnstone, BMS, PsiOxus, Merck KGgA with Vyriad, Boehringer Ingelheim acquired ViraTherapeutics, Jansen acquired BeneVir. Now, it's important to point out all of these partner starships are at least certainly the majority. We’re preceded either by IST or some form of active collaboration. Now this is why we think it's so important that we run these IST's with Pharma, so that they have a say in the biomarker plan, they have a say in what data capture, they have a say in even some of the interpretation of the data, but at the end of the day it is our data, its data we can share with other partners, its data that the partners themselves can see and review and its led to an expansion in BD activities. This has applied pressure. And now this week with these studies getting underway we’re generating data in real-time that we think will lead to the strategic alliance that will allow us to offset our phase 3 costs. Now, on that I'm going to switch gears and let you guys listen to Mr. Kirk Look our CFO.