Dr. Andreas Muehler
Analyst · Wedbush
Thank you. Yes, I'm very happy to present the top line data from our Phase 2 trial that in relapsing-remitting MS that we received late last week. So this slide introduces the patient population used in this Phase 2 trial of IMU-838, as well as points out the study had a 24-week blinded treatment period. This is the period for which we're reporting the top line data today, as well as an extended treatment period of up to 9.5 years, which is currently ongoing, and which is intended to observe long-term safety of IMU-838. This slide here, graphically summarizes the study design for this study. The study randomizes relapsing-remitting MS patients into two active treatment arms with 30 and 45 milligrams once-daily of IMU-838, as well as placebo. After completing the 24-week blinded treatment period, patients have the option to enroll the extended treatment period in which patients were randomized to either 30 or 45 milligrams IMU-838. In this trial a total of 209 patients received at least one dose of study drug and 96 patients were treated with placebo as well as with 45 milligrams of IMU-838 and 71 patients were treated with 30 milligrams IMU-838. As very few patients discontinued drug treatment during the 24-week blinded treatment period. We will come back to a more detailed analysis for the reason of discontinuations later on. A total of 197 patients completed the 24-week blinded treatment period. This slide also contains a summary of the baseline characteristics for the randomized patients. This slide is intended to introduce the primary and key secondary endpoints of the study. This study used the MRI base end points were four MRI examinations at week 6, 12, 18, and 24 were compared to baseline MRI. The primary key secondary study end points were based on the cumulative number of combined unique active lesions in MRI, refer to a CUA MRI lesions. Basically the endpoint counts all of the new MRI detectable lesions, whether it being gadolinium-enhanced lesions or lesion seen on T1 or T2-weighted images, using all of the treatment MRI examinations as compared to the baseline MRI and avoiding double counting. This analysis of the MRI was performed by an independent central and blinded MRI reader. The primary endpoint to analyze these data for the 45 milligram IMU-838 dose was the key secondary endpoint with use the 30 milligram IMU-838 data. So let's start with the efficacy data on this trial. So we are happy to report and I'm excited to be the one bringing this news that both primary and key secondary end points were met with high statistical significance, but let's dive deeper into the top line data that are currently available to us. The primary endpoint analysis has shown that treatment of -- with 45 milligrams IMU-838 over 24 weeks suppress an average 62% of CUA MRI lesions as compared to placebo. You can picture the end point as showing, for example, that while placebo patients show an average of 10 new MRI lesions -- these are not the actual numbers just for illustration. Patients treated with 45 milligrams IMU-838 show an average 3.8 new MRI lesions at the same -- in the same time period. The analysis shown -- showed a statistically significant superiority of 45 milligrams IMU-838, while placebo with a p-value of 0.0002. The 30 milligram dose of IMU-838 showed a 70% suppression of CUA MRI lesions over 24-week as compared to placebo. Taking my example again for placebo patients having 10 MRI lesions -- again, this is for illustrative purposes, that means 30 milligram patients only shows three new MRI lesions over the 24-week period. The analyze -- the analysis showed us that this group statistically significant to priority of 30 milligrams IMU-838 over placebo with a p-value of less than 0.0001. The analysis of the primary and key secondary end points represent the main statistical analysis for this trial as prescribed and a preplanned statistical analysis plan. All other end points of this trial will only analyze descriptively in agreement with general regulatory guidance that established scientific practices. So just to point out for the upcoming slides. This slide provides some illustration on the general relevance of the MRI lesion suppression data from this trial in light of other Phase 2 trials for other first-line oral medications currently commercially available for patients with relapsing-remitting multiple sclerosis. Although comparison between trials are often difficult as we point out, some of the difference is on the slide. Immunic believes that the MRI lesion suppression of IMU-838 compares favorably to other established first-line and oral medications in relapsing-remitting MS. The next slide is intended to show that MRI lesion reduction data are predictive of relapse reduction, an end point that is usually used in Phase 3 clinical trials in relapsing-remitting MS. A very large meta-analysis, including 54 published trials had shown that there's a robust association between the effect of MRI lesions and the effects on -- of the same treatment on relapses with a high correlation factor. Let's now continue with [indiscernible] some of the additional secondary end points that we already have available to Immunic as part of the top line data. This slide looks at gadolinium-enhancing MRI lesions. Those cumulative numbers of new gadolinium-enhancing lesions over 24 weeks and the number of patients without any gadolinium-enhancing lesions over 24 weeks, show recognizable numerical advantage of the IMU-838 treatment arms over placebo. This slide summarizes the data on the relapse- related end points of this Phase 2 trial. As relapse events are much less frequent than for some of the occurrence of new MRI lesions, which was the assessment with being the primary objectives of this trial. We would need to say that any assessment of relapse-related endpoints usually requires a much larger patient population to be studied with much longer follow-up period than 24 weeks of this trial. Therefore the study was not powered to make anymore [indiscernible] relapse-based assessments. However, and despite those limitations of the study, a positive signal was already detected that would indicate less relapse rate and more relapse free patients in the IMU-838 treatment arms. Given the limitations of such small and short duration trial, we're extremely pleased with what we have already observed such as signal related --regarding relapse-related endpoints. I would like to take the opportunity now to summarize the efficacy related results from the top line data of this Phase 2 trial of IMU-838 in relapsing-remitting MS patients. Primary and secondary end were met with high statistical significance. We also believe that there's equal efficacy of both dosages used in this trial, 30 and 45 milligram IMU-838. All other secondary endpoints, including those based on other MRI parameters and also endpoints based on relapse-event provided a noticeable signal and numerical benefit for the IMU-838 treatment arms in a consistent fashion as compared to placebo. Data on IMU-838 inhibition of MRI lesions are very encouraging and compare favorably to other first-line and oral medications. So let's now continue on safety, which I think you also would be interested to see. The first slide shows the rate of treatment emergent adverse event for the IMU-838 treatment arms and placebo. There's no noticeable trend for higher rates of adverse events with higher doses of IMU-838. There were only three serious treatment emergent adverse events in this trial, and those are listed here. The highest dose of 45 milligrams IMU-838 did not show any serious adverse events in this trial. Additionally, no on-study deaths were observed in this trial. This slide in more detail summarizes an important safety endpoint or the important safety endpoint of treatment discontinuation due to adverse events. We've already shown earlier the low overall discontinuation rates in this trial, basically 4.2% for the 30 milligram dose, 5.8% for the 45 milligram dose and 7.2% for the placebo group. More importantly, three patients in the placebo group and only two patients in the combined IMU-838 treatment arms discontinued treatment due to adverse events, either by investigator decision or due to protocol described criteria. The adverse events leading to treatment discontinuation also summarized here. We believe that this represents a good indicator for the favorable safety and tolerability profile of IMU-838 in this relapse-remitting -- relapsing-remitting multiple sclerosis patient population. As we have done for efficacy, this slide provides some illustration on the treatment discontinue rates from this trial with some of these data from -- again, the same first-line and oral medications that are currently commercially available for patients where it's relapsing-remitting MS. While often treatment discontinuation rates between trials may be difficult to compare, some of these drugs show much higher discontinuation rates on active treatment than for placebo. Immunic believes that the discontinuation rates for IMU-838 and placebo in this trial compare favorably to other established first-line and oral medications in relapsing-remitting MS. I would like to start a section of this presentation how that deals particularly with liver events and the potential for drug induced liver injury. Based on the black box warning for hepatotoxicity of teriflunomide and also other commercially available relapsing-remitting MS medications. Immunic has always considered this a potential areas for differentiation of IMU-838, and has very closely monitored liver events and liver enzyme elevations. And to date no signal for hepatotoxicity anywhere in the IMU-838 development program had been observed. We first need to point out that vidofludimus was the active components in IMU-838 and teriflunomide are structurally unrelated. Teriflunomide has also shown as those numbers from its label show, increased rates of enzyme elevations in the two approved doses of teriflunomide as compared to placebo. The label also has a very specific requirements for laboratory-based monitoring particularly during the initial treatment periods. Immunic has previously reported the detailed safety results of the COMPONENT trial and rheumatoid arthritis patients unblinded a few years ago. The careful analysis of liver events in this trial had not shown any signal for hepatotoxicity, in particular, when comparing against the baseline rates of liver events in a placebo group. Immunic again has done a very thorough analysis of liver and also renal event in this Phase 2 trial of IMU-838 in relapsing-remitting MS patients. In general, there was no increased rate of liver events or renal events following IMU-838 treatments over a 24 weeks as compared to placebo. But let's dive in a little bit deeper. We also looked -- next slide. We also looked at the rates of liver enzyme elevations, using different thresholds of 5x, 10x and 15x upper limit of normal range for these liver enzymes. As you can see from this slide, the rate of elevations of liver enzymes included both ALT and AST both the major different enzymes to very low. Additionally, there was no increase of rate of liver enzyme elevations in either IMU-838 treatment arm as compared to placebo. But let's go to another important analysis that is important assessment for drug induced liver injury. This slide summarizes the so-called Hy’s Law assessment of liver events. The Hy’s Law assessment looks for concurrent increases of liver enzyme above 3x upper limit normal and of total bilirubin of more than 2x upper limit normal. There were no Hy’s Law cases in the entire IMU-838 development program. There's approximately 650 [indiscernible] volunteers and patients exposed to be [indiscernible] to date. This analysis also confirms that there were no Hy’s Law cases in this trial as well. The scatter [ph] plot also shows that in graphical representation, that there are very few elevations of ALT, one of the liver enzymes or bilirubin and those are comparable between IMU-838 treatment and arms and placebo. Immunic believes that the EMPhASIS trial in relapsing-remitting MS patients, again, does not demonstrate a signal for hepatotoxicity for IMU-838. So here I would like to take you -- with you through to summarize the safety related results of the top line data of this Phase 2 trial. Consistent with prior data sets in other patient populations, administration of IMU-838 in this trial was observed to be -- was observed to be well-tolerated, data also providing further evidence of the favorable safety profile of IMU-838 in this relapsing-remitting patient population. In general, safety profile is comparable to the placebo group. We have seen a very low rate of treatment discontinuations -- in IMU-838 discontinuation rates compared favorably to many other oral and first-line medications already available in relapsing-remitting MS. In summary, we believe that the -- that a favorable safety profile of IMU-838 was observed. There was no increase in liver or renal events as compared to placebo, and there's no signal for any hepatotoxicity elevation of liver enzyme that could be observed. I think you would also be interested that I give you an outlook for the overall relapsing-remitting MS development program of IMU-838. So the analysis of the full Phase 2 trial data is ongoing beyond these top line data that are currently available that presented to you in full. Some of the more detailed data are not yet available. From the thorough blinded safety monitoring of the trial conduct, we already know that the incidence of important adverse events was low, and we do not expect any change in conclusions at the analysis of the core data set. However, once we obtain and analyze the full data set of this trial to Coordinating Investigator of this trial is expected to present more detailed data at an upcoming scientific meeting in early September. Immunic has already started preparations for a potential Phase 3 program sometime ago. And given availability of the Phase 2 data, we are continuing preparations for such Phase 3 program. We will provide more guidance on the intended Phase 3 program once full data is available, discussions with experts, clinical and statistical experts, as well as regulatory authorities have been completed. I was very excited that I was able to present these data to you. And I'm handing over back to Daniel.