Maria Fardis
Analyst · Oppenheimer
Thank you, Tim, and good afternoon, everyone. We have made tremendous progress in the last several months as we continue our effort toward our mission in offering TIL to cancer patients. Highlights since the last call include: in September, we held an end of Phase II meeting with FDA after which we unveiled an anticipated fast-to-market registration path for our lead product candidate, lifileucel, for metastatic melanoma. We also announced that we've received Regenerative Medicine Advanced Therapy or RMAT designation in advanced melanoma. We have new data being presented at SITC, which we announced by press release this morning. We also conducted a successful financing in October, bringing in $252 million. This additional funding gives us a strong cash position as we continue all of our continuing ongoing clinical trials and seek to build our own U.S. manufacturing facility, utilizing our proprietary centralized and commercial process known as Gen 2. Let me start with our lead program, C-144-01, a global Phase II multicenter study for lifileucel for metastatic melanoma. As confirmed during our FDA meeting, the agency acknowledged that a single-arm cohort could be supportive of initial registration for lifileucel. FDA also confirmed that conducting a randomized Phase III trial in post-PD-1 advanced melanoma patients may not be feasible. Based on FDA feedback, we now plan to recruit a new cohort of patients, which we refer to as Cohort 4, in support of registration. Enrollment in Cohort 4 will be initiated in early 2019 in metastatic melanoma patients post-PD-1 blocking antibody and if BRAF mutation positive, a BRAF inhibitor or BRAF inhibitor with MEK inhibitor. The primary endpoint of this study is overall response rate, or ORR, as determined by Blinded Independent Review Committee or BIRC. We expect to fully enroll this cohort by late 2019 or early 2020, with a BLA submission expected by end of 2020. We also announced this morning that new data from this trial will be presented at SITC this weekend. The new data will be featured during an oral presentation on Sunday, November 11, 2018, by Dr. Amod Sarnaik from H. Lee Moffitt Cancer Center, he is the lead investigator in the C-144-01 study. The data will be shared as a poster on Saturday November 10 during the conference as well. Highlights of the presentation will include: an overall response rate of 38% from 47 consecutively dosed patients; the ORR includes 1 complete response and 17 partial responses, 4 of which are unconfirmed and pending patients' upcoming second assessment; a median duration of response, or DOR, of 6.4 months, with a range of responses from 1.3 months continuing to 14 months of continuing responses, 10 of 14 confirmed responses are ongoing in this study. This translates approximately 68% of the responding patients remaining in respond. The disease control rate was 77%, with over 72% of patients having a reduction in tumor burden. All of the patients had received prior anti-PD-1 treatment and had a mean of 3.3 prior systemic therapies. Patients also had a higher tumor burden at baseline, including 11.2 centimeter meaningful diameters for target lesions. The most common treatment emergent adverse events observed in the cohort to date includes chills, febrile neutropenia, anemia, decreased platelet count, pyrexia and hypophosphatemia. There were 2 Grade 5 events reported. The ORR from the ongoing study in post-PD-1 metastatic melanoma patients treated with lifileucel continues to be well above the outcome from the current standard of care available for late-stage melanoma patients. In particular, the DOR greater than 6 months is very encouraging. Literature suggests that available care for these patients offers approximately 10% in overall response rate. Turning to our next program. Patient dosing continues at C-145-03, a Phase II trial of LN-145 for the treatment of patients with recurrent and/or metastatic squamous cell carcinoma of the head and neck. In October, we announced preliminary data of 13 patients with a reported overall response rate of 31% with a duration of response ranging from 2.8 to 7.6 months. Safety findings from these studies remain consistent with previous reports. Patients in this study had a median of 3 prior therapies. These results include patients from Gen 1 and Gen 2 manufacturing process. We will continue to enroll patients in the trial who will be treated with TIL manufactured with Gen 2 process. In C-145-04, our Phase II trial of LN-145, for the treatment of patients with recurrent metastatic or persistent cervical carcinoma, we have initiated dosing patients in Europe. We also announced that we crossed the first stage of the Simon's two-stage design. Enrollment in this study continues with the targeted enrollment of 47 patients. In October, we announced preliminary data for 15 patients with a reported overall response rate of 27%, with an early look at the DOR ranging from 2.4 to 2.5 months and continuing. Patients in the study had a median of 5 prior therapies. The safety findings from these studies remain consistent with previous reports. The protocol for this study has been amended to limit the number of prior therapies to no more than 3 and to exclude patients who have been treated with prior immunotherapy. We anticipate reporting early data from this study at an upcoming medical meeting in 2019. We are also conducting a fourth Iovance-sponsored study in non-small cell lung cancer patients as part of our collaboration with MedImmune, allowing treatment of patients with TIL plus durvalumab. As we announced in our previous call, given recent changes in the treatment landscape for lung cancer, we've modified this study design to eliminate the TIL along cohort. Patients will now be enrolled for treatment with LN-145 and durvalumab. There are currently 9 sites active for this trial, and we look forward to enrolling our first patient soon. Our fifth study is in PD-1 naïve melanoma and head and neck patients with TIL in combination with pembrolizumab, and LN-145 as monotherapy in non-small cell lung cancer patients who have previously report - or received systemic therapy with checkpoint inhibitors. This study, IOV-COM-202 is now open to enrollment with 2 sites active. With respect to expanding our TIL clinical development into new indications as part of our collaboration program with MD Anderson Cancer Center, we have 2 Phase II clinical studies currently being conducted at MD Anderson. The first of the 2 studies, 2017-0672 is investigating LN-145 manufactured using our Gen 2 manufacturing process, treating patients with soft tissue sarcoma, osteosarcoma and platinum-resistant ovarian cancer. For the second study, MD Anderson has begun enrolling patients and will use TIL manufactured by that institution using 4-1BB agonist antibody or urelumab, during the manufacture of the TIL product. Turning now to manufacturing. It is our intent to build our own U.S. manufacturing facility, utilizing our proprietary, centralized and commercial process. The site selection process for the facility is underway, and we anticipate finalization of the site selection in the first half of 2019. Regarding European manufacturing. In October, we announced as a new three year Manufacturing Service Agreement with MaSTherCell S.A., a dedicated facility to manufacturing cell therapy product. MaSTherCell will manufacture TIL for our late-stage clinical trials in its commercial-ready GMP manufacturing suites, which allows for an increase in our capacity for manufacturing TIL in Europe. As it relates to our IP portfolio, 2 U.S. patent applications covering therapeutic methods based on Generation 2 manufacturing which was developed at Iovance, were recently allowed and provide protection through 2038. As many of you know, all ongoing Iovance-sponsored trials are utilizing our Gen 2 manufacturing method that lasts 22 days and yield a cryopreserved product. We continue our research efforts here at Iovance. Under a collaboration with Ohio State University, we developed peripheral blood lymphocytes, or PBLs, and PBLs can be successfully expanded from PBMCs of lymphoma and leukemia patients. This may offer treatment options for patients who are in need of new therapeutics. PBL was developed at Iovance, have a similar lytic activity in leukemia as TIL do in melanoma, which includes higher interferon-gamma release and potent activity against autologous tumor cells or CD 19. A clinical program is expected to begin to administer PBLs in chronic lymphocytic leukemia, or CLL, in 2019. We're also pursuing next-generation TIL product both through process development as well as research. Our goal of our research and work on TIL is to increase potency of TIL products. We have been working on modifying the properties of our TIL cells through selection of better TILs from our cocktails in addition to different co-simulatory factors such as OX40 in 4-1BB agonist as well as utilization of various cytokines in our growth media. We also continue our research efforts with RXi and selected on investigation of utility of genetically modified TIL. Preliminary results from our selected TIL program will be presented at SITC as a poster. Looking ahead, we look forward to the presentation of new melanoma data this weekend at SITC, and hosting our IR event with KOLs on Friday night, presenting and participating at several conferences this month including the Cowen I/O conference in Washington, DC. The Tumor Targeted Lymphocyte Summit in Boston, the Credit Suisse Healthcare Conference in Scottsdale, the Jefferies Healthcare Conference in London and Evercore BioPharma Catalyst or Deep Dive Conference in Boston. Most importantly, we plan on beginning our enrollment in Cohort 4 in early 2019 and prefer for BLA filing in 2020. I would now like to turn the call over to Tim for a discussion on our financials. Tim?