Solomon Moshkevich
Analyst · Baird
Thanks, Steve. Many of you tuned into our oncology update call a few weeks ago. We did that primarily so that investors could have an easily accessible presentation that dives into our oncology efforts in some detail. I'm not going to go with that same level of detail here, but please take a look at our investor relations page for the more detailed presentation if you haven't seen it. Given we have a lot of newer investors on the call I will give a summary of that information today. The first slide is a reminder on where Signatera is positioned, as a Molecular Residual Disease test or MRD test. We're not focused on asymptomatic screening seen on the left side of the slide. Signatera is also not focused on therapy selection, which is typically where people talk about when referring to a liquid biopsy and where many of the other commercial tests today are in position. Therapy selection tests look at the specific genomic profile of the tumor and then match the patient to appropriate therapy based on the tumors genotype. Signatera’s main focus, however is in the middle of the slide, cancer monitoring and MRD assessment, which we estimate to be a roughly $15 billion market. We think our core technology is well suited to this indication with Signatera’s, personalized tumor-informed approach uniquely positions to win, because it maximizes accuracy and efficiency, which is critical in the setting. There are three key applications within this segment. First, patient stratification, where MRD size can determine the risk of recurrence and support better treatment decisions, in the adjuvant and the neoadjuvant setting. Second, serial testing after definitive therapy to detect recurrence earlier than current diagnostic tools. And third therapy effectiveness monitoring, how well is my immunotherapy working, for example. We're making meaningful progress in each of these three areas. The next slide summarizes the key commercial channels we are pursuing. In our direct pharma channel, we're offering Signatera to biopharmaceutical companies as a tool for using clinical trials. When we talked about the oncology business even six months ago, sales to pharma was the primary path for us to generate near-term oncology revenue. Since then, we've opened up three additional channels, each of which we believe represents a significant opportunity. First, is the direct clinical effort, we received a draft coverage decision in colorectal cancer for Medicare in August. This indication addresses two unmet needs for a very large population of colorectal cancer patients. And we are now building out the commercial team and designing a registry study to support the clinical adoption of signature at scale in colorectal cancer. Next is the clinical opportunity for Signatera in China, and for competing in global clinical trials with our partner BGI Genomics. BGI already has a very large genetic testing business in China, which did more than 1 million cell-free DNA tests last year and has experience with Chinese FDA approval. We expect BGI to launch Signatera for the Chinese market in 2020 or BGI will handle all the sales and marketing effort and pay us a royalty on sales. We believe China represents a very large opportunity with roughly 4.3 million new cancer cases and 2.8 million cancer deaths annually. Many of these cancer survivors do not get consistent access to high quality imaging. So blood-based monitoring tool like Signatera, it’s relatively simple to distribute can address in crucial unmet need. Finally, in Q3 we're very pleased to announce our partnership with Foundation Medicine. In this partnership, we will co-develop personalized CT DNA monitoring products using tissue analyzed by FoundationOne CDx as the baseline essay. Within partnering with Foundation Medicine, a leader in comprehensive genomic profiling of tumor tissue and the results of ease and offering this additional monitoring information to their existing patients and existing biopharm partners, gives this product a chance to rapidly become the standard for monitoring in the setting. For our newer investors, I'd like to just briefly summarize the two intended uses proposed by Medicare in colorectal cancer. The first unmet need is the early detection of cancer recurrence. Approximately 25% to 30% of patients with local or regional CRC will relapse and colorectal cancer is a cancer type where early relapse detection is known to improve outcomes, by allowing some patients to become eligible for curative surgery if recurrence is detected early enough. For this reason patients today are monitored closely using a combination of CT imaging and the serum biomarker, CEA for at least five years. Unfortunately, the vast majority of recurrences today over 85% are caught too late for cure to surgery, with most cases being diagnosed after clinical symptoms have already appeared. In our JAMA Oncology paper, Signatera detected relapse up to 16.5 months earlier than standard tools and on average 8.7 months earlier. This is a significant lead time that can result in more patients having a chance to curative treatment. For a patient who just positive with Signatera in this setting, the physician could reflex to higher resolution imaging, such as contrast guided CT scan, a PET scan or MRI to locate the lesion as soon as possible. Furthermore, the direct head-to-head comparison of testing serially with Signatera versus testing serially with CEA, shows significant improvement in both sensitivity and specificity. Signatera’s sensitivity was 88% compared to 69% for CEA. And patient level specificity was 98%, compared to 64% with CEA, meeting less than one-tenth the false positive rate of CEA. On a per test level, Signatera’s specificity was even higher at 99.7%, implying a positive predictive value per test of over 97%. This is why Medicare proposed coverage for Signatera testing with a timing and frequency that matches NCCN guidelines for surveillance with CEA. In this regard Signatera could significantly reduce unnecessary clinical and diagnostic workups and the anxiety associated with false positive results. The second major unmet need is to triage patients for adjunct chemotherapy after surgery. Most local and regional CRC patients are cured with surgery alone. So the objective of chemotherapy after surgery is to eradicate any micrometastatic disease that may remain in the body. The problem is that physicians and still now could not know who has micrometastatic disease and who does not. So many patients today are significantly over-treated with chemotherapy. In a status quo, we estimate that up to 11 patients are treated to benefit just one. Using Signatera, however to stratify patients after surgery can lead to more patients getting treatment who need it and to a significant reduction in unnecessary treatment and adverse events, for patients who test negative on Signatera and our clinical candidates for treatment deescalation. This potentially improves treatment efficiency to treating only three patients to benefit one instead of 11 to benefit one. This slide lays out the pathway to commercial launch. We were ahead of schedule in getting draft LCD, which covers the use of Signatera in certain patients with stage two and three colorectal cancer, supporting testing with the same frequency of CEA, which is roughly four times per year in first two years and about two times per year thereafter. With occasional short interval testing indicated for certain high risk patients. Overall, we think the indication described could represent a testing pool of up to 1 million tests annually. Making this, we believe the largest specialty oncology diagnostics to ever receive a draft coverage policy for Medicare. Based on these developments, we're not designing a registry trial with multiple NCCN centers and we'll begin enrolling patients in the near future. We're also building out a meaningful direct sales channel, targeting oncologists and GI surgeons who treat colorectal cancer. We'll be ramping that effort over time and expect to have a sizeable team hired by mid-2020, which is about the time we expect to have a final coverage decision for Medicare. While this effort will be focused on driving volumes in the colorectal indication for which Medicare has already proposed coverage, we anticipate this commercial channel will also support additional indications across solid tumors. Ideally, we'd like to have a steady stream of coverage decisions, it opens up the use of Signatera broadly in the clinical space. With that, let me hand it over to Mike to walk through the financials. Mike?