Steve Chapman
Analyst · Piper Jaffray
Thanks, Matt. The next slide shows our recent volume progression for Panorama and Horizon. You can see the last few quarters are a step function higher than last year's unit volumes and Q2 volumes matched unusually strong Q1 volumes as Matt described. We're pleased with this result given the seasonality trend favoring Q1 and the unprecedented growth rate we achieved in Q1 setting a new high bar. We worked through our pipelines in Q1 in a faster pace than normal contributing to our record growth. During Q2, we put energy towards rebuilding these pipelines, which bodes well for the rest of the year. In our Panorama business, the mix of volumes has remained stable at roughly 60% average risk units and 40% high-risk units and our attachment to carrier screen has continued to grow. The next slide shows volume growth in the first half of the year. Despite the fact that the business has obviously grown substantially larger in terms of absolute volumes, you could see on the left chart our volume growth rate in the first half is more than twice what it was this time last year. And Q2 is one of the strongest year-on-year volume growth rates we have posted in recent years. The year-on-year growth rate for a particular quarter is a good way to look at the growth trends because it more accurately captures seasonality trend between quarters. Consistent with volume trends we've observed for the past several years, Q2 tends to be a wider volume quarter for our current accounts with volume recovering over the course of the year. In Q2, we offset the seasonality trend with new client volume remaining at our high watermark, while laying a solid groundwork for the rest of the year. So with those data points in mind, the next slide shows volumes on an annual basis and our expectations for the rest of the year. Based on the trends we were seeing so far in Q3, we feel we are very well positioned to deliver a record year this year in terms of total volumes at roughly 30% year-on-year growth for the full year, which is consistent with our goals set in January. Looking ahead to the future of our prenatal business. We've seen some encouraging news from out of ACOG in academia recently that we think bodes well for broader adoption of NIPT in the average-risk setting. As we had described previously, ACOG recently withdrew their previous guideline covering the use of cell-free DNA screening for fetal aneuploidies. This guideline included some ambivalent language regarding NIPT in the average risk setting and many of the coverage policies from the remaining payers that do not cover NIPT for all pregnancies cited this language in their coverage policies. That opinion is now no longer in use. And separately, ACOG just reaffirmed their practice bulletin #163, which we believe is substantially more favorable toward average risk adoption. We think the withdrawal of the previous guideline and the reaffirmation of the practice bulletin clears the way for a new guideline to be issued. And as we have described previously, the evidence supports a stronger guideline. Last week, a review article was published in The New England Journal of Medicine written by 2 key opinion leaders in prenatal care. The article summarized the key data and clinical use of sequencing-based, cell-free DNA testing during pregnancy and they made a lot of the same points we often make on investor calls. Specifically, the authors describe how across 3 large scale studies, the first positive rates associated with cell-free DNA screening were less than 1/10 as high as that with multiple marker screening in the general population and the positive predicted values were significantly higher. The authors also described the clinical benefits of assessing the fetal fraction in a sample and noted that not all labs routinely report on fetal fraction. Of course, as we had described previously, our assessment of fetal fraction on a workflow is a key quality differentiator between Panorama and other NIPTs . We think articles like these demonstrate the benefits of NIPT as an option for all pregnancies. Just as the importance of reporting fetal fractions was highlighted in The New England Journal of Medicine, we were pleased to publish the clinical validation study for a new biomarker based on fetal fractions that Matt described. The clinical validation study publishing ultrasound in obstetrics and gynecology compares the outcomes from 1,148 pregnancies to results using the new algorithm. Results showed that the algorithms successfully identified high-risk cases, out of which roughly 22% had a chromosome abnormality or adverse pregnancy outcome representing the vast majority of all abnormalities in cohort. This is not flagged by the fetal fraction based risk algorithm had no evidence of increased risk. Many of the abnormities that we've identified in the study cannot be predicted by other NIPTs and we believe this gives us another competitive advantage. We plan to commercially launch this offering this quarter. As Matt described, we designed a SMART trial so we can run this algorithm with the samples we have collected to identify additional correlations between fetal fraction and key adverse outcomes such as preterm birth and preeclampsia. We think this new algorithm can help extend our leadership position in NIPT and we will continue to leverage the trove of data we have collected over time to create additional offerings. This launch represents the first of many examples in Natera leveraging it's leadership position and extensive database to build a competitive nook around our products. Now I'd like to transition to the transplant data we announced in June. I'd like to spend some time describing our commercial plans in more detail. First, a reminder on the market. In contrast with our women's health franchise, kidney transplant patients are very concentrated in a relatively small number of centers. In the United States, there're roughly 265 centers that offer kidney transplants and approximately 80% of patients are treated in just 100 centers. We believe we could target this market ourselves with a very modest sales team with the experience in these centers and leverage our user experience infrastructure to bring the same level of high-touch customer care to these patients as we described in June. We can leverage the same playbook we used to achieve market leadership in NIPT to enter the transplant market. We have a few precedents of not being first to market, but then rapidly taking market share based on superior clinical performance and commercial execution. In this instance, we are at an advantage because we've already done the work on lowering COGS and operating a cell-free DNA laboratory at scale. A quick refresh of the data presented at the Transplantation Society Annual Meeting in Madrid in July. We evaluated 292 plasma samples taken from 187 transplant recipients and the status of their rejection level is confirmed by analysis of biopsy tissue. The results of the study suggested our assay could substantially improve the standard of care. As we expected, the level of donor-drag DNA found in the bloodstream was significantly higher in patients suffering an acute transplant rejection compared to a non-acute response. We successfully called acute rejection with 92% sensitivity, 73% specificity and an area under the curve of 0.90. As we described in June, we believe physicians will prefer our assay over other available cell-free DNA tests based on our test performance. The next slide shows a summary road map to obtaining reimbursement in transplant. In the near term, we plan to complete our CLIA validation, publish the analytical and clinical validation establish a Z code and formally submit our dossier for Medicare local coverage decision. You can see we've got the first wave of activities already underway and our target is to complete our submission for an LCD so that we can get the coverage decision published in 2019. The next slide gives more detail on our reimbursement strategy. We believe we could use a miscellaneous code and obtain an accompanying Z code. We're confident this can be done and there is a little risk to this strategy as the steps to achieve this are generally administrative. Under this path, pricing would be established directly by MolDX. We think this is a very favorable outcome for us because it's unlikely we will be treated differently by MolDX than a similar test that's already priced at $2,800. Alternatively, we can obtain a PLA code through a separate quarterly application process as we successfully completed in the past with our NIPT zygosity code just granted in Q2. In this case, pricing would either be established on the Medicare clinical lab fee schedule or depending on timing directly by MolDX. For example, if we miss a deadline for the CMS clinical lab fee schedule pricing meetings, where the code would be priced through crosswalking process, we would be priced directly by MolDX. In summary, there are multiple paths to achieving stable pricing and coding within 2019. Now for a brief update on our progress in oncology with Signatera. We've shown these Kaplan-Meier curves demonstrating our capability across cancer types. And as we mentioned in June, we've generated similar data in breast cancer. On the next slide is our current effort in breast cancer. ISPY-2 is measuring molecular response to neoadjuvant treatment being run at UCSF. This study with University of Leicester and Imperial College London is monitoring cancer relapse after completion of surgery in adjuvant chemotherapy. The [indiscernible] study combines aspects of both other studies evaluating Signatera for response in neoadjuvant treatment as well as for detection of relapse. You see on the right side of the slide, the study with Leicester and Imperial College of London includes patients with all 3 of the key breast cancer subtypes, including ER positive, HER2 positive, and triple negatives. This is a study that is now complete and the data is currently under embargo because we plan to submit the results for presentation in a leading breast cancer conference later this year. As Matt mentioned at the top of the call, we've been very pleased with uptake of Signatera in the RUO setting for pharma companies. We now have 20 studies signed, including trials in lung cancer, colorectal, breast, prostate, non-Hodgkin's lymphoma, GI tumors, multiple myeloma as well as pan-cancer pharma studies. These studies are starting to translate a larger collaborations as Matt described. One area of growing interest for pharma is investing in more clinical trials using advanced therapies in the adjuvant setting. Historically, pharma has focused its investment in a metastatic setting to prove out the utility of new therapeutics, but now they are starting to move upstream to the earlier stage disease, where there are many more patients. We believe Signatera will be a useful tool to stratify patients with worse prognosis for inclusion in adjuvant studies to accelerate trials and decrease costs. In the future, Signatera may be used to identify, which patients would benefit from these adjuvant treatments. We are on track to launch our CLIA test early next year. With that, let me hand it over to Mike to review our financial performance. Mike?