Michael Tardugno
Analyst · Maxim. Please go ahead
Thank you, Jeff. Good morning. I’d like to start by thanking all of you for taking the time to join us today. I'm here with Dr. Nicholas Borys, Celsion’s Chief Medical Officer and with Jeffrey Church from whom you’ve just heard, our Chief Financial Officer. As always we are pleased to have this opportunity to update you on the progress that Celsion is making and in particular with the two clinical investigational stage products in primary liver cancer, recurrent chest wall breast cancer, ovarian cancer, and our upcoming program in glioblastoma or brain cancer. As you can tell from our press release, this morning Celsion has had a very productive fourth quarter, and if you look back even further, you will see that the company has posted an impressive record of accomplishment throughout this past year of 2015. I'd like to highlight a few of them. Completing the integration of EGEN this marvelous gene focused development stage company in Huntsville, Alabama was accomplished. Doing so, we rationalized a clinical strategy for the EGEN and Celsion Technologies and launched OVATION study in first line ovarian cancer patients. The study is supported with translational data demonstrating exciting immunotherapeutic potential of our first product from EGEN GEN-1. We established early stage feasibility programs with development partners in one of the most exciting new fields of medicine, microRNA to determine if our lung directed delivery platform TheraSilence combined with certain mIRs, microRNAs, and anti-mIRs developed by these companies can have a positive effect on the course of the disease in preclinical models. We will know the outcome of this research and whether it will lead to a partnership soon. We obtained approval in China for the OPTIMA Study, one of the few companies to do so and a few non-China companies to do so in this past year and are recruiting as planned in our global study of the largest unmet medical need remaining in oncology, that’s primary liver cancer or HCC. We closed and published remarkable findings from our U.S. RCW trials and are moving quickly to initiate an European based study organized spontaneously by leading radiation oncologists in Europe, and we reduced significantly our overall cost structure eliminating over $4 million in annualized expenses from the combined Celsion-EGEN entity. Celsion, now a 27% company, with a range of development stage research programs utilizes our platforms in chemotherapy, gene mediated immunotherapy, and lung directed RNA therapy. Celsion is well-positioned for 2016 and with multiple opportunities for clinical success as we move forward with some of most important trials in our generation. Now, I'd like to take some time particularly for those who may be new to Celsion to quickly review the strength of our science focusing primarily on our two clinical stage platforms, that’s heat-sensitive liposomes and therapeutic plasmids or TheraPlas. Both of these platforms provide us with the capability to deliver well-known, well-characterized therapeutics in highly effective dosage forms. Both have broad pipeline capability. Both are designed to enhance clinically meaningful therapeutics and both are engineered to local regionally target early stage cancers. So let's talk first about the heat-sensitive liposomes to which Celsion has the exclusive license from Duke University. The distinctiveness of this 100-nanometer, that's a submicroscopic lipid vessel is that in the presence of tissue heated to just above body temperature, that is about 40°C, it releases its therapeutic payload in locally very high concentrations. The upshot to the heat trigger mechanism is just this. A safe dosage is administered intravenously and it results in a very high local dose when the tissue is heated with FDA approved devices to the transition temperature. We have shown clearly that this mechanism can increase the effect of local concentration by over 25 times. I'd like to think of this liposome is so simple that it's administered intravenously targeting tissue with heat, driving high local concentrations with therapeutic value. This platform is robust. We’ve demonstrated the capability to incorporate a number of chemotherapies including platinum compounds and taxanes among others. Our first drug however on the platform is ThermoDox. As the name applies, ThermoDox is incorporating doxorubicin into the heat sensitive liposome. ThermoDox represents our most advanced investigational product that is in late stage development for primary liver cancer and recurrent chest wall breast cancer. For primary liver cancer or HCC as I pointed out earlier, we are conducting a Phase III OPTIMA Study, a global trial that combines ThermoDox with radiofrequency ablation, a heating technology used to treat newly diagnosed intermediate stage patients. If successful, OPTIMA support product approval filings in all major international markets including China, Southeast Asia, South Korea, the European Union, Canada, and the USA for the largest unmet need remaining in oncology. With over 800,000 new cases annually, where median survival is less than 30 months and five-year survival is less than 10%, our study immediately addresses even by the most conservative estimates, $1 billion plus international market opportunity. As many of you know, OPTIMA is not our first attempt in HCC. It was preceded by the HEAT Study, a trial while failing to meet its primary PFS endpoint taught us a great deal. Without question, I say this unequivocally, without question we know more today about RFA and intermediate stage primarily liver cancer than just about any company on the planet. Among our learnings, we know that RFA must be used within its engineered design limits to be successful. Intermediate stage tumors require no less than 45 minutes of heating time to be fully ablated. Longer heating time correlates well with higher local concentrations of ThermoDox which we have prospectively proven in large animal preclinical studies and in computational models. We learnt that patient in our study had unexpectedly long overall survival, and as a consequence patients with poor liver health scores died primarily of their underlying disease, not of the cancer. And a final point what we learnt and has been mentioned by a number of thought leaders in liver cancer is that ThermoDox used with the appropriately conducted RFA can now be considered for cure, which are basis for all of these learnings. For the past three years, we've been following a well-balanced, well bounded subgroup of patients from the HEAT study whose RFA treatment time is greater than 45 minutes. With each quarterly data suite, clinical benefit in the ThermoDox arm improves and the statistical significance gets better. Every quarter, the findings improve every time. Now it is a median. Results are considered stable by statisticians. These data along with corroborating multivariate analyses have been reported and updated at five international medical conferences and have been the subject of two international liver cancer specific symposia. I can report that there has been no significant challenge to the analyses and/or nor our thesis and their thesis is just this, in the intermediate stage disease, ThermoDox plus RFA standardized to a minimum of 45 minutes is a significant benefit over RFA alone standardized to a minimum treatment time of 45 minutes. The subgroup survival data is astounding. The median overall survival in the ThermoDox plus standardized RFA arm is greater than 80 months or over six and a half years, which in oncology one would consider short. In contrast, the optimized RFA arm alone, that's RFA conducted alone at 45 minutes minimum resulted in the median survival of 54 months from our HEAT study. As a comparison to other competing therapies, for example chemo embolization one of the more widely used local treatment options for this population, survival shows a median ranging from 37 months to 54 months. Again I will remind you that ThermoDox plus standardized RFA arm, standardizing greater than 45 minutes consistently showing 80 months survival benefit with statistical significance. It is not surprising that some of the most respected investigators, thought leaders and regulatory agencies indicate their impressive support for continued research and for follow-on OPTIMA Study. The OPTIMA Study is based on of course on this HEAT findings and is evaluating ThermoDox in combination with optimized RFA which will be standardized to a minimum 45 minutes across all investigators and all clinical sites for treating lesions 3 to 7 cm versus standardized RFA alone. The study is expected to enroll up to 550 patients globally in up to 75 sites and as I mentioned in the United States, Europe, China and Asia Pacific. The study is powered to detect a 33% improvement in overall survival and that's compared to the 50% that we see in the HEAT Study subgroup. In my view this gives us plenty of margin for success. And just a note about China, China represents the most important market for ThermoDox with approximately 50% of the 800,000 new cases diagnosed annually originating in China. To support Chinese registration we will enroll 200 Chinese patients which is the minimum required by the CFDA to file a new drug replication. We continue to be very optimistic about the potential of ThermoDox plus standardized RFA in this region and look forward to an updated data set from the Chinese cohort in the near future. Hopefully as a median, perhaps in the third quarter. All in all we are pleased with the progress that we've seen with our OPTIMA trial and remain on track to complete enrollment by the end of 2017 or early first quarter 2018. This will be followed by the first interim efficacy readout in the second half of 2018. In addition to the OPTIMA Study we are also advancing our development program for ThermoDox and recurrent chest wall breast cancer or RCW cancer. The opportunity to present data from our DIGNITY Phase II study at the San Antonio Breast Cancer Conference symposium in September, the data demonstrated a combined local response rate of 62% among evaluable patients treated with ThermoDox. In our view an outstanding result in this highly refractory form of breast cancer associated with poor quality of life and very limited treatment options. We are building on this treatment's potential with our DIGNITY Study. The study will evaluate complete and partial responses, both clinically meaningful after three cycles of ThermoDox plus hyperthermia and radiation as well as local regional breast tumor control in patients undergoing this trimodal [ph] therapy. The set plan calls for 70 patients in an open label trial, the site activation beginning next month and first interim assessment expected in the first quarter of 2017 just a year from now. As a reminder, costs for this trial are being offset with funding in kind from the device manufacturer MetLogix in investigational sites in Italy, Poland and the Czech Republic. I want to share with you, I know we talked about a lot of accomplishments, but I do want to share with you one note of disappointment. We filed a request for breakthrough designation with the FDA in quarter 4 last year. Unfortunately recorded in their response FDA indicated that we did not have enough data to grant our request. They did indicate however, that we could reapply, but given the sole enrollment history of past three studies amounting to about 50 patients over seven years we are unlikely to do so. Instead we will focus on Europe where thermal therapy is the standard of care for this population. Now I'd like to focus on our second and equally if not more important platform, therapeutic plasmids where Dr. [indiscernible] likes to call it TheraPlas for short. TheraPlas is a synthetic nonviral vector engineered to deliver DNA plasmids that are coded for therapeutic proteins into living cells. Its formulation is appended polymer with the cholesterol agent that promotes absorption of this nanoparticle into the cell. Once in the cell the DNA plasmid begins a process of using the cellular machinery to construct proteins for which the DNA is sequenced. The proteins now with therapeutic value are secreted for an extended period of time and in some cases for the life of the cell. TheraPlas is often compared to various viral vectors which are commonly used to deliver DNA sequences into the cellular environment. And while viral vectors are known to be more efficient and the high transfection rates they do have limitations. TheraPlas we believe addresses some limitations in the superior and other important aspects and more compelling for local regional treatment. TheraPlas is not subject to neutralizing anybody as viral vectors and can be administered repeatedly and as a maintenance therapy is so indicated. TheraPlas is shown to be very safe. We have seen virtually no SAEs or overlapping toxicities when combined with other therapeutics or chemotherapies. So it is well-suited as a combination therapy with standard of care chemotherapy along for valuation importantly in oncology allowing for evaluation in first and second line patients, particularly when evaluating an immunotherapeutic where the immune system has not been compromised by repeated therapies. Now our first drug on this platform is called GEN-1. GEN-1 is an IL-12 coded DNA plasmid formulated into the TheraPlas nanoparticle. This therapy causes sustained local production and secretion of the IL-12 protein. IL-12 is a cytokine that mediates and recruits multiple anticancer mechanisms of the immune system. And while it has well has been recognized as one of the most powerful immunotherapies in cancer its development is a standalone treatment has been hindered with the serious toxicities associated with poor pharmacokinetic with factory produced recombinant IL-12 protein. In a sentence recombinant IL-12 because of its short half-life requires high doses. High doses cause serious safety concerns. GEN-1 overcomes these limitations by promoting persistent local production and endogenous production of IL-12. Data from our GOG conducted Phase 1B study of platinum-resistant ovarian cancer patient demonstrate that intraperitoneally administered GEN-1 produces a distinct IL-12 protein that is localized at the tumor site. It lasts for up to one week after a single treatment. We noted that concomitant increases in interferon and antiangiogenic protein and TNF-alpha indicate that the IL-12 GEN-1 treatment is immunologically active. Clinical findings from the same trial were also impressive with a partial response or stable disease observed in 100% of patients treated at the highest dose. This compares favorably to an overall clinical benefit of less than 50% for the current standard of care and published studies. We are now conducting a Phase I dose escalation study in newly diagnosed ovarian cancer patients in the neoadjuvant setting known as the OVATION Study. This trial is designed to enroll 3 to 6 patients per dose cohort and will evaluate safety and efficacy. It will define an optimal dose for follow-on Phase I/II Study combining GEN-1 with Avastin and Doxil the standard of care for platinum-resistant recurrent patients. In February we reported that the first two patients in the OVATION Study who completed treatment have shown promising results. Both patients demonstrated improvement with a dramatic drop in the CA-125 protein levels of 89% and 98% respectively. For context we would note that a 50% reduction in CA-125 levels is considered meaningful. Now for those of you who are asking the question CA-125 is a protein, it is a prognostic indicator of tumor cell burden for lower levels are better. Last week our DMC met and gave the okay to enroll the second cohort at 30% increase in dose with the first cohort now completed I am pleased to report that the first three patients in this novel proof second cohort have been identified. Assuming no DLTs we can expect the third and perhaps final cohort to enroll beginning in the third quarter. The study goal of course is to identify a safe therapeutic dose of GEN-1. In this case we will not use a traditional means to find the dose, but typically in oncology dose is escalated until you find the maximum tolerated dose. As Dr. Boris [ph] point out repeatedly, the maximum dose or maximum therapeutic dose of GEN-1 will largely be determined by the activity of the immune system. The data from this Phase I study will be used to inform the Phase I/II study evaluating GEN-1 in combination with Avastin and Doxil, the Phase I/II to the study that I just referred to earlier. The combination with Avastin and Doxil where support was very impressive, I would consider exciting preclinical data which demonstrated potential synergy of this combination to substantially inhibit tumor growth. Our studies now show convincingly that GEN-1 when combined the Avastin and Doxil demonstrated 98% reduction in tumor burden when compared to the untreated control group. These findings represent a statistically significant reduction in tumor burden in disease progression when compared to the in vivo studies of the combination of Avastin and Doxil alone. And the analysis of serum chemistry and hematology demonstrated no over toxicity is associated with combination treatments. The study and its findings will be presented at the AACR next month. In the meantime we are finalizing the Phase I/II clinical trial protocol in recurrent ovarian cancer patients for FDA submission later this year. And while our efforts for GEN-1 are primarily focused on ovarian cancer program, we continue to see great promise in glioblastoma multiform. Our preclinical work is ongoing and is focusing on the mechanism of administration, dosing protocols and toxicity studies. We expect to complete work in the pre-clinic by year end. In the meantime, we will continue to focus our resources and give full attention to drive the ovarian cancer program. The potential for both GEN-1 immunotherapy and ThermoDox to say the least and we look forward to providing you with updates as we advance these programs through the clinic. Now let me turn the call over to Jeff Church for a review of our financials. Jeff?