Will Lewis
Analyst · Leerink Partners. Your line is now open
Thank you, Blaine. Good morning, everyone. Thank you for joining us. We have made tremendous progress over the past year and we kicked off 2018 with that same momentum. We believe 2018 will be the year we secure approval and launch our lead drug, potentially the first-ever approved inhaled therapy to treat severe refractory NTM lung disease. This is a keystone element of our effort to build a global biopharmaceutical company focused on serious rare diseases. The transformative event during 2017 that advanced the mission was the positive topline results we achieved in our Phase III INS 212 study. This was followed in January with additional positive interim data from the INS 212 and INS 312 extension studies. INS 212 and INS 312 are evaluating the impact of amikacin liposome inhalation suspension, or ALIS, on adult patients with severe refractory nontuberculous, or NTM, lung disease caused by Mycobacterium avium complex, or MAC. Let me start with the disease we're fighting. To remind you, NTM lung disease is a rare and progressive pulmonary infection associated with irreversible lung damage and declining lung function. This disease typically affects an older population and is associated with an increased mortality rate. Strikingly, the five-year mortality rate for NTM MAC can be as high as 33% and could actually be much higher for those patients who fall into the category we will target first, the severe refractory patients. In this regard, we have set out to address a challenging and significant unmet need in this globally prevalent disease. Recall that our INS 212 study is evaluating ALIS plus guideline-based therapy, or GBT, versus GBT alone. As we announced in September, based on topline results, we met the primary endpoint of culture conversion. The addition of ALIS to GPD led to culture conversion by a 20% margin over GBT alone, with 29% of patients converting within six months of treatment. This was a highly statistically significant result with a p-value of less than 0.0001. These data will serve as the basis for our NDA filing and we remain on track to file by the end of March. Our robust clinical program continues to gather additional information on the long-term clinical safety and efficacy of ALIS. Patients who culture converted in 212 are continuing in the trial for an additional 12 months of treatment and will be monitored for a year after their treatment is completed. Patients who did not culture convert by month six have the option to enroll in our INS 312 study, in which all patients are receiving ALIS plus guideline-based therapy for an additional 12 months. In January, we shared additional positive data from these two studies that underscore the impact that the addition of ALIS has to background GBT therapy. First, we reported interim culture conversion data from the first six months of the INS 312 study, which mirrored what we saw in INS 212, with 28% of patients achieving culture conversion within six months following the addition of ALIS to GBT. Importantly, this rate of conversion was almost identical to the treatment impact we observed in the topline data from the first six months of INS 212, reinforcing our confidence in the consistency of the treatment effect and the success of the program overall. Second, we saw the benefit of longer-term treatment with ALIS beyond six months for patients who don't initially convert, with 12% of prior non-converters from 212 on ALIS plus GBT achieving culture conversion on or before their 14th month of ALIS plus guideline-based therapy treatment. Third, we've been able to show that the durability of culture conversion is substantially higher for patients receiving ALIS plus GBT versus those patients treated with GBT alone. Durability of culture conversion is significant in the treatment of NTM and this is a point of focus for regulatory authorities. The INS 212 interim data showed, with approximately two-thirds of evaluable patients, the durability of culture conversion three months off all treatment was substantially higher in the ALIS plus GBT arm at 61% compared with GBT alone at 0%. This is an encouraging result as we believe that full approval for ALIS is contingent on the FDA's examination of durability of culture conversion three months off all treatment. It is also a very important insight into the inadequacy of guideline-based therapy in this patient population. Recall that GBT had never been studied in a clinical controlled trial previously, demonstrating even on an interim basis that no GBT patient achieving durable culture conversion may cause physicians the question the wisdom of using GBT alone. Finally, we believe these studies demonstrate a consistent and manageable safety profile. Serious treatment emergent adverse events observed in INS 212 were roughly similar between ALIS plus GBT versus GBT alone. And in the INS 312, serious treatment emergent adverse events are similar to those seen in INS 212. AEs remain consistent with those seen with the use of inhaled antibiotics. Let me remind you that both the INS 212 and INS 312 studies remain ongoing and we anticipate that they should be completed by the end of this year or early next year. In addition to the incremental interim data we announced in January, we also hope to share more data at the American Thoracic Society International Conference, or ATS, taking place May 18 through to the 23rd in San Diego. We're organizing some events for investors. So, if you are planning to attend ATS, please let us know. In parallel, we also anticipate several publications, including one that examines the biological significance of the liposome, will be published over the coming months. With that, let me segue to an update on the regulatory front for ALIS. As I mentioned earlier, based on our Phase III 212 study results, we are on track to file a US NDA with the FDA before the end of March. We are in the final details of the NDA preparation and see no major impediment to its completion and submission. We expect to file for approval in the US under subpart H with the division of anti-infective products. We anticipate a six-month priority review by the agency. We're also expecting and preparing for an advisory committee meeting prior to the PDUFA date and we look forward to a dialogue with FDA through the review process and to clarify on the specific label for ALIS. We will continue to keep you abreast of our progress on this front and we believe we are well on our way to a potential US launch for ALIS before the end of 2018. As we previously indicated, our first priority beyond the US market is Japan. The prevalence of NTM lung disease is higher in Japan than elsewhere in the world, with approximately 15,000 to 18,000 diagnosed refractory NTM patients, more than are currently identified in the US. We believe that data from INS 212 supports our fighting strategy in this market. We continue to advance our dialogue with the PMDA and MHLW, including pursuit of orphan drug status. We will provide further updates on our progress in Japan throughout the year. Earlier this week, we also announced that we broadened our intellectual property protection for ALIS. The US Patent and Trademark Office issued what is now our ninth patent for ALIS, covering methods for treating MAC lung infections with ALIS to non-cystic fibrosis patients by nebulization once daily for at least 84 days. This is significant as it represents an extension of 16 months over previous existing coverage, providing us protection well into 2035. Clearly, our focus this year is on our transition to becoming a commercial organization as we strive to bring this important drug to patients around the world, suffering from an intractable disease. We are rapidly moving ahead with precommercial activities to support a potential US approval and successful launch. The Insmed team is also working to advance a number of other programs in rare disease, including INS 1007 and INS 1009. Activities with these programs continue to move forward and we look forward to sharing more details on these programs as they advance. Let me pause here and turn it over to Roger now for an update on our precommercial activities, followed by Paulo who will cover our fourth quarter financials. Roger?