Stuart Peltz
Analyst · Ritu Baral of Cowen, your line is now open
Good afternoon and thank you for being on the call. As you know, we recently reported results from our Phase 3 ACT DMD clinical trials for Translarna for nonsense mutation Duchenne muscular dystrophy. We're excited to talk more about that today as well as our planned next step. As you might expect, we've been sharing this data with the number of important stakeholders globally including physicians, key opinion leaders and patient advocacy groups. The response to our data has been extremely positive. The feedback is highly supportive of accelerated access to our patient across all stages of disease progression. PTC has now demonstrated a favorable benefit risk profile across two large double planning placebo-controlled trials. We're actively finalizing our regulatory submission to both the FDA and EMA which we planned to complete by the end of this year, we're committed to working closely with all relative stakeholders to bring Translarna to patient as quickly as possible. In all countries where Translarna is already available on a commercial basis the launch has been progressing well and continues to gain momentum. We're extremely proud to have launched the first ever approved treatment for patient with his life threatening disorder. We now have 152 patients on commercially reimbursed Translarna therapy across 13 countries. This includes patient's given access either through reimbursed or the access program or direct commercial sale. The launched in Europe and across country that referred to the EMA approval is impressive giving the standard nature of a country by country reimbursement process. This is the largest increase in patients and therapies since we begin reporting patient number earlier this year. Following the announcement of ACT DMD results we've seen an uptake and momentum of new patient order. In addition to the 152 patients we have today on commercially reimbursed Translarna, we also have approximately 425 DMD patients in our open-label extension studies from our previous Phase 2 and most recently completed Phase 3 ACT DMD study. This brings our total to more than 550 DMD patients currently on Translarna therapy, as Translarna become as more commercially available in any given country or region, we expect to transition a significant portion of these patient to commercial therapy as appropriate. Now I'd like to take some time to review the results of our Phase 3 ACT DMD clinical trials, which we reported on October 15. We have posted supplemental slides on our website which provide additional perspective on our data. Before we getting to the data, it is important to understand than in developing the treatment for an ultra-orphan lifelong progressive life one progressive disease such as DMD the goal is to show efficacy with given endpoints in the limited window of a 48 week clinical study. We see this in ACT DMD. Turning to Slide 3, the totality of clinical data confirms Translarna's ability to slow disease progression for patients with DMD. In ACT DMD while the overall results in the ITT population of our study demonstrated a 15 meter difference in favor of Translarna that was not statistically significant. Translarna's demonstrated a highly significant clinically meaningful 47 meter benefit in the Six Minute Walk Test in the pre-specified three to four hundred meter baseline patients. In addition the pre-specified meta-analysis showed statistically significant benefits in both the primary end point of Six Minute Walk Test as well as the secondary Time Function Test. Now let me walk you through some of the details of the results. On Slide 4 you can see that the natural history indicates that patients tend to be stable with Six Minute Walk distance baseline above 400 and transitioned to a more rapid decline with a midpoint based on a six minute walk test of 350 meters. Given this evolving awareness of the natural history of Duchenne muscular dystrophy in the Six Minute Walk Test and the [indiscernible] of the patient population, we together with the Duchenne muscular dystrophy community now understand that the optimal window between drug effects is a Six Minute Walk distance baseline in the range around 300 to 400 meters. Slide 5 illustrates why the Six Minute Walk Test is a less reliable endpoint for patients with baseline Six Minute Walk distance less than 300 meters. Results from an MRI study that correlates Six Minute Walk distance with fat content in muscles demonstrates that patients with a baseline Six Minute Walk distance less than 300 meters have between a 75% to 80% fat content in the muscles and are at high risk to lose ambulation therefore making the Six Minute Walk Test less reliable in these patients. The 6th Slide in the presentation highlights the baseline characteristic of the patients enrolled in the ACT DMD, and our Phase 2B results. While our intention was to narrow the range of baseline Six Minute Walk distance in patients enrolled in ACT DMD, we now know that the second study actually enrolled patients across a broader range of disease spectrum than anticipated. Based on knowledge of the biology and the evolving understanding of the natural history of DMD and the strength and limitations of the Six Minute Walk Test, we were cognizant of the potential importance of defining subgroups in our analysis when submitting the statistical analysis plan to the FDA earlier this year. Therefore we specified subgroups that would focus on the declined phase, specifically those patients with baseline Six Minute Walk distance less than 350 meters at baseline and those between 300 and 400 meters. If you look at Slide 7 we see a 50 meter benefit of Translarna over a placebo in the ITT population although it did not reach statistical significance. However in the 300 to 400 meter subgroup we see a clinically meaningful 47 meter benefit in favor of Translarna. Importantly, this was consistent with the 45 meter benefits seen when we look back at the 300 to 400 meter subgroup from our previous Phase 2B study. The limitation of the Six Minute Walk Test outside the 300 to 400 meter window was confirmed in our recently completed ACT DMD trial. As seen on Slide 8, examining the placebo patients in our study it is clear that in the population of patients with baseline Six Minute Walk distance greater than 400 meters, patients are effectively stable over the 48 weeks. However in the population of patients with baseline Six Minute Walk distances less than 300 meters patients are declining substantially. This is because patients walking less than 300 meters are at risk of losing ambulation over the ensuing 48 weeks, and we saw this in our study. It seems like now and consistent with the Six Minute Walk Test limitations described above in the less than 300 meter group and the greater than 400 meter essentially no change can be measured using the Six Minute Walk Test over 48 weeks. Together with the DMD community we now further understand the limitations of the Six Minute Walk Test in both rapidly declining patients and very stable patients. The limitations of the sensitivity of the Six Minute Walk Test in these patients impacts the statistical results for the overall patient population. Turning to Slide 11, demonstrating the fact in patients below 300 meters you need an endpoint with the appropriate level of sensitivity. Here you see the data from our key secondary endpoint the Time Function Test in patients with baseline less than 300 meters where Translarna had a consistent benefit over placebo. Though the Six Minute Walk Test may be too onerous for the progressed patients the shorter Time Function Tests demonstrate clinically meaningful drug benefit. This illustrates the importance of using the appropriate test to measure efficacy at each stage of disease. I would like to point you to Slide 13, the North Star Ambulatory Assessment data. The North Star ambulatory assessment is a newer instrument that is dissent specific measure of disease progressions. This has been an area of interest in our discussions with key opinion leaders who see this data as an important measurement of function in Duchenne muscular dystrophy patient. The North Star ambulatory assessment is also an important measure because of evaluation of upper body function which is important for both ambulatory and non-ambulatory patients. In ACT DMD, the North Star assessment score favored Translarna by 1.5 points in the ITT population and 4.3 points in the 300 meter to 400 meter baseline population. This is the most significant treatment effect demonstrated by the North Star assessment in any clinical trials to date. In summary, on Slide 14, you see a flowchart demonstrating Translarna has a consistent benefit over Placebo in the primary and secondary end points across both the ITT as well as the meta-analysis. We've heard feedback from many KOLs that the fact that the six minute walk test and the time functions that are correlated with benefit gives them increased confidence of Translarna's clinical benefit. It is important to note over 900 individuals including healthy volunteers and patients with nonsense mutations genetic disorders have been exposed to Translarna today. In addition to the efficacy results, we've just described, Translarna also exhibited a strong safety profile. This is critically important given than it is intended to be a chronic therapy rotations. We're actively finalizing our regulatory submissions to the FDA and EMA which we plan to complete by the end of the year. In the meantime, the North American commercial leadership team is in place and we're appearing for a U.S. launch. Let me now turn to our Cystic Fibrosis program. I'm pleased to share that during our enrollment of the Phase 3 ACT CF trial, we experienced an overwhelmingly strong demand from physicians and patients who wanted to participate in our trial. We closed patient screening in October and expect to complete enrollment by the end of this year with data about a year later. In September of this year, we've submitted an application to add nonsense mutation restrict by grosses to our label for Translarna in Europe. This application was based on results from our previous Phase 3 trial. The application process with the European Medicine Agency is ongoing and we expect additional information in the coming months. Concurrently we are actively preparing for a potential launch in Cystic Fibrosis in Europe in 2016. In October we attended a North American Cystic Fibrosis conference and received positive feedback from key opinion leaders on our new analysis of FEV1 and exacerbation, new patients less than 18 years old and the importance of addressing the unmet medical need for nonsense mutation Cystic Fibrosis. In addition to our Translarna programs in DMD and CF, there're also programs underway in MPS1 and aniridia. Earlier this year, we initiated a Phase 2 proof of concept study for Translarna and MPS1. Existing treatments for MPS1 do not address this central nervous system manifestation of the disorder which can be quite severe. Because Translarna is a small molecule which can cross the blood brain barrier, there's a potential to address this unmet medical need. In May of this year, we amended the clinical trial protocol to allow patients currently using enzyme replacement therapy to also enter the study. This protocol revision has resulted in delays to opening clinical trial sites and accruing patients. As a result we now expect to have initial data from this trial in 2016. Let me now shift to the spinal muscular atrophy program, SMA is a genetic neuromuscular disease caused by a missing or defective SMN1 gene which results in reduced levels of SMN protein. Insufficient levels of SMN protein are responsible for the loss of motor neurons within the spinal cord and muscle tissue leading to muscle atrophy and death in infants and toddlers in the most severe form. SMA is a leading genetic cause of death in infants. There are currently no marketed therapies for SMA. PTC together with Roche and the SMA Foundation have a robust program around all small molecule SMN2 splicing modifiers as a way to address the disease. Because SMA is both a muscle and nerve disease, there's a benefit through an oral molecule with broad peripheral tissue distribution. SMN2 splicing modifiers affects splicing of the RNA through the production of full length messenger RNA and thereby enable the production of normal SMN protein. Our lead compound RG7800 was selected in 2013 and moved into the clinic in early 2014. Data from the first cohort of our Phase 2 multiple dose study called Moonfish were recently presented at the Annual Congress of the World Muscle Society. RG7800 was well tolerated and substantially increased splicing of SMN2 RNA to full length mRNA. The data demonstrated up to a three-fold increase in full length Messenger RNA and up to two-fold increase in SMN protein levels. We've announced in May that the dose of MoonFish was suspended as we evaluating a non-clinical [indiscernible] monthly up to nine months of dosing and exposure level of above dose dosed in the clinic. As a remainder primary dosing was not done in the clinic. These preclinical investigations are ongoing. There is a high level of commitment to the SMA program for PTC as well as from our partner Roche and the SMA Foundation. Concurrent with the advancement of our lead compound, a robust research effort regarding SMN2 splicing has continued to advance through IND-enabling studies. Additional data are expected in the coming months, which will be utilized to determine the best clinical development path for the SMA program. PTC and the program collaborators remain highly committed to this program and expect that clinical development will resume in early 2016. Let me now turn to our cancer stem cell program targeting BMI1. BMI1 is an up regulated in the tumor stem cell population and is an important component of the complex that allows cancer cells to become resistant to chemotherapy. As you may recall, our compound PTC596 reduced the levels of the BMI protein in preclinical oncology model. I'm very proud to have a fourth internally discovered program at PTC entering clinical development. PTC596 began a Phase 1 study in the second quarter of this year in advanced cancer patients with solid tumor. We are excited about this program and continue to go well and we'll keep your breath with the progress as we move forward. As you can see we've had a busy year so far and reported [indiscernible] many milestones in the coming months. With that let me turn it over to Shane to talk about our financial results for the quarter. Shane?