Gerard Michel
Analyst · Roth Capital. Please go ahead
Thank you, everyone, for joining today. Delcath has had a very productive second quarter of 2022 and year-to-date, for both the HEPZATO KIT, the company's investigational product candidate in the United States; and CHEMOSAT, the company's marketed product in Europe. In the U.S., we continue to move forward towards the resubmission of a new drug application for the HEPZATO KIT late this quarter. As previously reported, in late April, we completed a pre-NDA meeting with FDA, and based on that interaction and subsequent meeting minutes provided by FDA, which incorporated feedback and recommendations, we see no barriers to a resubmission of the NDA with the current data in hand. For purposes of the NDA submission, all queries have been resolved and are considered complete, and the FOCUS Trial database has been locked. While the database is locked for purposes of the submission, I want to remind listeners that certain times and event endpoints such as overall survival will continue to mature through mid-2023. Delcath expects to provide FDA with routine periodic updates of these additional data and future submissions. Within 30-days after the resubmission, we expect the FDA will confirm receipt of the submission, and if they agree the submission is sufficiently complete to warrant review, which we fully expect they will, establish a PDUFA date six months from the submission date. While we do not know whether the FDA will convene an Advisory Committee, we are preparing for one and look forward to the opportunity to highlight HEPZATO’s efficacy and safety. The foundation of the NDA resubmission is the FOCUS Trial results, for which Dr. Jonathan Zeiger, Global Lead Investigator, provided an update during ASCO's Annual Meeting in June. I will take the time to review those data here since I have covered that many times in various forms and the updated data was largely consistent with the early data release. I will simply reiterate that we believe the totality of the efficacy data demonstrate that HEPZATO produces clinically meaningful benefits to patients suffering from liver-dominant metastatic ocular melanoma and that its safety profile is in line with other traditional cytotoxics. Taken together, we believe the data supports a very positive benefit risk profile for patients. In an effort to ensure suitable patients have access to the HEPZATO KIT during the NDA preparation and FDA review, we have started opening expanded access program or EAP sites. The first site opened has completed three treatments to-date and have another three treatment schedule this month. The pace of treatments will increase as more patients refer to the treating sites. The second site has started to screen patients, but may not start treating until October due to clinical trial coordinator staffing issues. We will reduce judicious in our pace of opening EAP sites to ensure the treating sites are well qualified and prepared. Although investigators of clinical trial sites are interested in participating, clinical staffing turnover and shortages that have occurred over the last year at many of the clinical sites make it imperative that we are certain that a well-trained team is in place before we elaborate to go forward. To this end, we have recently hired a dedicated medical device procedural trainer, who will work with potential EAP site treatments. The procedural trainer will also complete the development of Rollic's training program needed for commercial launch and lead our overall training effort. Based on the ongoing usage of CHEMOSAT in Europe, during the second quarter, additional European audit publications supported of CHEMOSAT and by extension, HEPZATO KIT were published. I'll cover just two of them now. At ASCO, researchers from the Leiden University of Medical Center in the Netherlands presented additional data on the ongoing CHOPIN trial. The goal of this investigator issue is combined Phase 1b -- randomized Phase 2 trial is to study the safety and potential synergistic effects of systemic immunotherapy, ipilimumab plus nivolumab, or IPI+NIVO, when combined with Delcath proprietary liver-targeted treatment in metastatic uveal melanoma patients. The primary objective of Phase b was determing the safety and toxicity of the combined products. And last summer at the 2021 Cardiovascular Interventional Radiological Society of Europe Conference, the investigators reported that there were no dose lending toxicities and that the Phase 2 randomized course of the trial comparing PHP alone to PHP with IPI+NIVO hectormenous. In total, 79 to 88 patients will be treated in Phase 1b and 2 combined, and we understand that to-date 28 patients have been enrolled. While the primary purpose of the first phase to file was safety, efficacy results on seven patients treated with combination PHP with IPI+NIVO were reported this past quarter at ASCO and the results were noteworthy. The poster reported an objective response rate of 85.7% and a disease control rate of 100%. At a median follow-up time of 20.2 months, four patients have an ongoing response according to RECIST criteria. The presentation reported a median progression-free survival of 22.4 months, and all patients were still alive. If similar results are seen in the current larger randomized Phase 2 portion of the trial and the combination continues to be well tolerated, it could represent a significant improvement of the current standard-of-care, including PHP alone. It is important to take a moment to explain why this investigator-initiated trial is a great interest to Delcath. Combination therapy is a radical approach since while liver failure due to hepatic medicines is the leading direct cost of death for metastatic ocular melanoma patients as many as other types of cancers such as colorectal, extrahepatic mets do occur in treatment with PHP alone can not effectively treating, while systemic immunotherapy has very limited efficacy on liver mets. Logically, combining therapies may lead to better control of both hepatic and extrahepatic disease. Beyond these additive effects, there are compelling reasons to believe the combination could have synergistic effect. First, tumor lysis induced by PHP treatment could provoke antigen release that may lead to enhanced antigen presentation and increased efficacy of immunotherapy. Secondly, a related but distinct possible synergic effect is based on the unique role of liver placement systemic immune system. The liver, continuously exposed to food and microbial antigens in the intestine, avoids autoimmune damage for the use of specialized mechanisms of immune tolerance. An extensive value of published literature support the deliveries in immune-privileged environment and functions as a systemic immune modulating organ, possibly enhancing tolerant to its tumor antigens outside of the liver. It is well documented that patients with liver mets derive limited benefit of immunotherapy possibly due to these effects. In preclinical models, the elimination of hepatic -- of immune cells resident in the liver has been shown to reverse immunosuppressive effect of hepatic metastases. This may be relevant to the HEPZATO and CHEMOSAT given high doses of melphalan in the liver maybe reducing the local and systemic immunosuppressive effects of hepatic metastases by depleting the various immune cells in the liver responsible for these effects. We look forward to further data coming out of Leiden, both in terms of patient outcomes, as well as other analyses which may help elucidate whether CHEMOSAT is actually improving the efficacy of immunotherapy by the elimination or reduction of the immunosuppression effect of hepatic metastases. While the results will be important in terms of treatment of metastatic ocular melanoma patients, it could have relevance across multiple tumor types where hepatic metastases are present and immunotherapy is an accepted treatment. Last week, a retrospective analysis of patients treated with PHP at three European centers was published in the Journal, Cardiovascular Interventional Radiology. The study included 101 patients, who were treated with a total of 212 PHP procedures between 2014 and 2019. After a median follow-up time of 15-months, a complete response was reported in five patients, partial response is 55 and stable disease and third, resulting in an overall response rate of 59.4% and a disease control rate of 89.1%. The median progression-free survival was nine months and overall survival was 20-months. The study also found statistically significant differences in overall survival between patients who had complete response, partial response or stable disease and progressive disease. For example, patients with complete response or partial response, the median overall survival was 27-months. The patients with stable disease, the median overall survival was 21-months, and for patients with progressieve disease, the median overall survival was six months. This correlation between response status and overall survival is critical since response rates do not always correlate with survival. As overall response rate is the primary endpoint of the FOCUS trial, from a regulatory perspective, any supportive data is shown in a correlation between overall response rate and survival is helpful. As we have previously reported, we did see the same correlation of the FOCUS trial, and we intend to share the details of that specific analysis at an upcoming medical conference. Further safety analysis in this publication is the most common adverse events for hematological toxicities were Grade 1 and 2 and self-limiting in the majority of patients and consistent with previous reports on PHP. Other adverse events were thromboembolic in nature. The adverse events reported in this retrospective study are consistent with other publications and the FOCUS trial results. Turning to the commercial progress of CHEMOSAT in Europe. The second quarter was the first full quarter since we resumed direct responsibility on March 1 for sales, marketing and distribution activities. Q2 unit volumes were down approximately 10% from Q2 of 2021, but essentially flat if one takes into account that as almost all patients being treated with CHEMOSAT in the Netherlands are being enrolled and treated the CHOPIN trial. In terms of unit performances over Q1 2022, growth was over 75%, but the first quarter and second quarter unit volumes may have been impacted due to the business transition from Medac back to Delcath on March 1. While we expect meaningful growth going forward, I would not expect that level of quarter-on-quarter growth on a regular basis. We are satisfied with this performance since we have a very limited team in place at the moment with only a single account manager in all of Europe. Clearly, the current business is primarily being driven by investigator word of mouth, and we are confident we can drive uptake as we build our commercial infrastructure. Revenue comparisons at this time are not relevant given the prior quarter's revenue is comprised of product sales to Medac and a share of growth profits. Our primary focus in Europe at the moment is hiring an account representative in Germany to increase referrals, utilizing our medical affairs personnel to foster increased support in larger markets such as Italy and France, where we do not yet have much active commercial business, and developing the submission packages for national coverage in major markets. We anticipate submitting for national coverage in the United Kingdom, Austria and the Netherlands by the end of this year. In 2023, we'll submit for national coverage in France, Italy, the Scandinavian markets and other select smaller markets in the EU. We already have reimbursement Germany under the ZE scheme, but we need to work to increase awareness and subsequent referrals to the treating centers. While it will likely take several years to obtain national coverage in the majority of major markets, we are confident that Europe will become a meaningful revenue contributor to the business with EU revenues likely growing along with U.S. commercial launch of HEPZATO, if approved next year. I want to note that given the difficult capital market situation, we have decided to manage the European business on a cash flow neutral basis to maintain adequate capital for the U.S. submission and launch. At the moment, the European business is self-sustaining and we continue to be so as revenues grow and are reinvested in the European business. While we continue to plan on expanding the PHP platform to other indications, like many companies in this difficult capital markets environment, we need to prioritize the shorter-term, higher-return activities, which is clearly submission of the NDA and preparations for a potential U.S. launch. We continue to hold advisory boards to obtain feedback on and review the post clinical trial protocols, including intrahepatic cholangiocarcinoma and colorectal as well as discuss IPs in various areas, including other combination immunotherapy trials. Although we believe, based on feedback and protocol proposals, that there is real interest from the investigators to expand the usage of HEPZATO and CHEMOSAT, the timing of the trials may be delayed to ensure the activities most critical to the success of the business are adequately funded. We are confident we can access the capital necessary to fund the business and want to do so in a manner that minimizes solution to our existing shareholders. Hence, our decision last month to raise $5 million to what was effectively a straight common deal priced at market which is a larger raise, which may have involved much less favorable terms. I look forward to taking questions. But first, we'll turn the call over to Tony to review the financials. Tony?