Craig Granowitz
Analyst · Piper Sandler. Please go ahead
Okay, Jeff. As a reminder, the SOLOIST-WHF trial enrolled approximately 1,200 patients with type 2 diabetes and worsening heart failure. Double-blind randomized treatment began either in the hospital or within three days following discharge. There are approximately 50% of patients in each of these categories. The primary endpoint for this trial was achieved with a statistically significant and clinically meaningful reduction of 33% in the composite of total cardiovascular death, hospitalization for heart failure and urgent heart failure visits with the need to treat only four patients to avoid one event, a finding which is unsurpassed within the SGLT inhibitor class. The objective of Dr. Pitt's post hoc analysis was to evaluate the efficacy of sotagliflozin versus placebo at reducing hospital readmissions and mortality within 30 and 90 days after discharge from a heart failure hospitalization among the patients who began study treatment on or before discharge. As a reminder, there were no differences between these two groups for baseline characteristics or the primary endpoint, presented here are the results for cardiovascular death and heart failure related events for the first 30 days post-discharge. You can clearly see the sotagliflozin arm in blue begins to separate from the placebo arm in red very early on reaching a significant reduction in events of 51% compared to placebo by 30 days with a P value of zero equals 0.023. Now extending to 90 days post-discharge, you can see that the separation and reduction are maintained with a reduction in events of 46% compared to placebo by 90 days with a P value of 0.004. The authors concluded that sotagliflozin significantly reduces the 30 and 90 day rates of cardiovascular mortality and heart failure related events, as well as total mortality by 90 days post discharge when administered prior to hospital discharge after an episode of worsening heart failure. These findings are unique and they underscore the benefits of early initiation of evidence-based heart failure therapy. Sotagliflozin is the first compound to demonstrate a reduction on both mortality and heart failure events for treatment initiated during a worsening heart failure hospitalization. We certainly agree with the author that these results have important implications for patient quality of life and healthcare costs and expect that these data to be key points of differentiation in the marketplace should sotagliflozin obtain regulatory approval. Now, turning briefly to our LX9211 program. LX9211 is a potent, highly selective small molecule inhibitor of a novel target, the adapter associated kinase one or AAK one in a number of clinically relevant animal models of neuropathic pain. LX9211 demonstrated consistent significant reductions in pain scores even when compared to positive controls such as gabapentin. LX9211 achieves high levels of drug in the CNS and importantly, the mechanism of action of LX9211 is independent of the opioid pathway. In Phase 1 studies LX9211 was shown to be well tolerated with a pharmacokinetic profile supportive of once daily dosing. Lexicon has been granted fast track designation by the FDA for diabetic peripheral neuropathic pain. As we discussed during our last quarterly call, the primary endpoint of the relief DPN 1 study was achieved with a statistically significant reduction in average daily pain score or ADPS at week six compared to placebo in the low dose arm. It was an absolute reduction in ADPS from baseline of 1.39 points with a P value of 0.007 compared to placebo. The high dose arm achieved a reduction from baseline of 1.27 points with a P value of 0.03 compared to placebo narrowly missing the significant threshold of 0.28 but showing consistent effects. Importantly, the therapeutic effect was seen early during treatment with separation from placebo being evident and statistically significant by week one in both arms and remaining throughout the treatment period. Also, the drug effect was remarkably consistent across a range of baseline factors including age, sex, background medication, and baseline pain score. Importantly, the patient's reported outcomes, which are a measure of patient's overall wellbeing or experience in the study showed greater improvement in those treated with LX9211 compared to placebo. Adverse events were more frequent in the LX9211 treatment arms, particularly at the higher dose. As expected based on our experience in Phase 1, the most common adverse events observed were dizziness, headache, and nausea would nearly all reported as mild or moderate in nature. What we did not observe in the safety profile of LX9211 were some of the limitations of current therapies for painful diabetic neuropathy such as peripheral edema, increased appetite blurred vision, for dry mouth. The adverse events tended to occur early in treatment suggesting the possibility that they may be associated with the loading dose and given the rapid onset of effects on ADPS, offering the potential for further optimized dosing for both tolerability and efficacy. To summarize, we believe the results of the RELIEF-DPN 1 study support AAK 1 inhibition as a potential new mechanism of action for treating neuropathic pain and the rapid advancement of LX9211 in development for treatment of diabetic neuropathic pain. We believe that LX9211 has the potential to overcome many of the shortcomings of current therapies and could become a welcome new innovation for those suffering from neuropathic pain on a daily basis. We are continuing to work to identify and optimize the proper dosing regimens and we are planning to engage in a dialogue with FDA on how best to advance the program into Phase 3 development as quickly and efficiently as possible. We believe this program would benefit from a partnership that offers the right strategic fit for our organization and stakeholders and are engaged in discussions in this regard which we believe will yield a positive outcome. In the meantime, we are proceeding with our plans for further development without pause. Lastly, a reminder that the final results of the RELIEF-DPN trial beyond which we have already reported as top line results will be presented at an oral presentation this upcoming Monday, November 14 at the 16 Annual Pain Therapeutic Summit in Washington DC. Immediately following the presentation, we will host a conference call at 5:00 PM Eastern time to review the final results and we invite you all to participate the details for which can be found on our website. I'd now like to turn the call back to Jeff to take us through the financial results for the third quarter of 2022.