Brian Lian
Analyst · Truist Securities. Please go ahead
Thanks Greg. I'll now provide an update on the progress with our development programs beginning with our lead program VK2809. As a reminder, VK2809 is an orally available, small molecule agonist of the thyroid hormone receptor that possesses selectivity for liver tissue, as well as the beta receptor subtype. Throughout this developments, VK2809 has demonstrated a consistent and compelling profile for the treatment of metabolic and lipid disorders. In Phase 1 studies in subjects with mild hypercholesterolemia, treatment with VK2809 produced significant reductions in plasma lipids, including LDL cholesterol, triglycerides and atherogenic proteins. Our Phase 2a study in patients with non-alcoholic fatty liver disease, and hypercholesterolemia successfully achieved both its primary and secondary endpoints, with treated patients demonstrating highly statistically significant reductions in liver fat content, as well as improvements in LDL cholesterol. VK2809 also performed well on secondary measures in this study demonstrating significant reductions in other plasma lipids such as triglycerides, apolipoprotein B, and lipoprotein A. Importantly, no serious adverse events were reported in this trial among patients receiving VK2809 or placebo. The initial and follow-up data from this Phase 2a study have been the subject of presentations at key scientific meetings including AASLD and the International Liver Congress or EASL. The most recent of these oral presentations was made at the 2020 EASL conference, and highlighted follow-up data demonstrating VK2809's durable benefits, including among patients with key NASH risk factors. At week 16, four weeks after completion of the 12-week treatment period in the study, VK2809 treated patients maintained a statistically significant 45% median reduction in liver fat content, compared to a 19% reduction among patients receiving placebo. In addition, at week 16, 70% of VK2809 treated patients maintained a response defined as experiencing a greater than or equal to 30% relative reduction in liver fat content from baseline. Notably, all patients receiving five milligrams of VK2809 daily which was the lowest dose evaluated in the study maintained a response at week 16. In addition, week 12 study results demonstrated significant reductions in liver fat among patients receiving VK2809, as compared to placebo, regardless of the presence of common NASH risk factors, including elevated baseline levels of ALT, a body mass index greater than 30, hypertension or Hispanic ethnicity. Combined, these results suggest that VK2809 has a compelling profile that we believe demonstrates advantages compared with other therapies in development for the treatment of NASH. We believe VK2809’s exceptional low-dose potency in reducing liver fat and plasma lipids, as well as its durable effects, encouraging safety and excellent tolerability profile, establishes as a best-in-class compound for the treatment of patients with NASH and fibrosis. Further the observed reductions in other lipids maybe an important indicator of cardiometabolic benefits for patients. A key distinction, which we believe represents an advantage, when compared with other mechanisms in development for NASH that have been associated with elevations in lipids known to increase cardiovascular risk. Following completion of our 12-week Phase 2 a study, we initiated a Phase 2b study to evaluate VK2809 in patients with NASH. This trial called VOYAGE is a randomized double-blind placebo-controlled, multicenter trial designed to assess the efficacy, safety and tolerability of VK2809 in patients with biopsy-confirmed NASH and fibrosis. The study is targeting enrollment of approximately 340 patients across five treatment arms. The target population includes patients with F2 and F3 fibrosis, as well as up to 25% with F1 fibrosis. The primary endpoint of the study will evaluate the change in liver fat content, as assessed by magnetic resonance imaging proton density fat fraction from baseline to week-12 in patients treated with VK2809 as compared to patients receiving placebo. Secondary objectives include the evaluations of histologic changes assessed by hepatic biopsy after 52 weeks of treatment. During the second quarter, screening and enrollment in VOYAGE continued at study sites both within and outside of the US. Patient enrollment over the first half of 2021 has continued at a steady rate. We expect to report the initial data from this study in 2022 and we continue to anticipate data approximately 16 to 20 weeks after completion of enrollment. I'll now provide an update on our second clinical program VK0214. During the second quarter, this program gained significant momentum with the successful completion of a first-in-human Phase 1 study and the initiation of a Phase 1b study in patients. Like VK2809, VK0214 is a novel, orally available small molecule thyroid hormone receptor agonist with selectivity for the beta receptor subtype. We are developing VK0214 as a potential treatment for X-linked adrenoleukodystrophy or XALD. XALD is a rare and often fatal metabolic disorder characterized by a breakdown in the protective barriers surrounding brain and nerve cells. The disease, for which there is currently no approved pharmacologic treatment is caused by mutations in peroxisomal transporter of very long-chain fatty acids known as ABCD1. As a result, transporter function is impaired and patients are unable to efficiently metabolize very long-chain fatty acids. The resulting accumulation is believed to contribute to the onset and progression of clinical signs and symptoms in patients with the disease. The thyroid hormone beta receptor is a promising therapeutic target for this disease, because it is known to regulate expression of an alternative very long-chain fatty acid transporter known as ABCD2. Various preclinical models have demonstrated that increased expression of ABCD2 can lead to normalization of very long-chain fatty acid metabolism. Due to VK0214’s potent activation of the thyroid hormone beta receptor we believe it may present a potential therapeutic benefit to patients with XALD. In September 2020, we initiated a Phase 1 first-in-human study of VK0214. This trial was a randomized double-blind placebo-controlled single ascending and multiple ascending dose study in healthy volunteers. The objectives of the study which we evaluate the safety, tolerability and pharmacokinetics of VK0214 administered oral once-daily for up to 14 days. The first portion of the study evaluated single-doses of VK0214, while in the second part of the study, subjects received VK0214 once-daily for 14 days. In June, we were pleased to announce that the study had successfully achieved its primary objective with VK0214 shown to be safe and well-tolerated at all doses evaluated in the study. No serious adverse events were reported and no treatment or dose-related trends were observed for gastrointestinal effects, vital signs or cardiovascular measures. Treatment with VK0214 demonstrated dose-dependent exposures, no evidence of accumulations, and a half life consistent with anticipated once-daily oral dosing. A secondary objective of the study was to evaluate laboratory assessments including a lipid panel to determine potential pharmacodynamic effects following exposure to VK0214. The results showed that subjects who received VK0214 experienced reductions in LDL cholesterol, triglycerides, apolipoprotein B, following 14 days of treatment at all doses study. Many of the observed lipid reductions achieved statistical significance. Those are study that’s not powered to demonstrate statistical significance on laboratory assessments. Given the safety, tolerability, and lipid reducing activity observed in healthy volunteers, we made the decision to proceed with a planned Phase 1b study of VK0214 in patients with the adrenomyeloneuropathy form of XALD, an initiated study last month. This Phase 1b study is a multicenter, randomized, double blind, placebo controlled study in adult male patients with adrenomyeloneuropathy or AMN. AMN is the most common form of XALD affecting approximately 50% of those with the disease. Clinical manifestations include progressive leg weakness incontinence and sexual dysfunction. The study is initially targeting enrollments across three cohorts, placebo, VK0214 dosed at 20 mg per day and VK0214 dosed at 40 mg per day. Expanding a blinded review of preliminary safety, tolerability and pharmacokinetic data, additional dosing cohorts maybe pursued. The primary objectives of the study are to evaluate the safety and tolerability of VK0214, administered once-daily over a 28-day dosing period and to assess the efficacy of VK0214 at lowering plasma levels of very long-chain fatty acids in patients with AMN. Secondary objectives include an evaluation of the pharmacokinetics and pharmacodynamics of VK0214 in this population. We currently expect top-line results from this study to be available in 2022. To best support our ongoing clinical programs, we recognize the importance of maintaining a strong balance sheet. As Greg noted earlier, we ended the second quarter with approximately $228 million in cash, which we believe provides adequate capital to complete our ongoing and potential future clinical studies and advance both VK2809 and VK0214, well into and potentially through later-stage developments. That said, we remained focused on managing our financial resources and development spend. To this end, along with the filing of our quarterly Form 10-Q this evening, we will be filing a new shelf registration statement with the Securities and Exchange Commission, along with a prospectus for an At-The-Money or ATM equity facility. We do not anticipate a need for additional capital in the near-term. Rather, our prior shelf registration statement expired last week and we are filing a new Form S-3 and ATM simply as a matter of good housekeeping. In conclusion, we continue to make progress with our lead program VK2809 for the treatment of NASH and Fibrosis. Based on the clinical data to-date, we believe VK2809 will be a best-in-class therapeutic and are optimistic regarding its potential to treat a range of metabolic and lipid disorders. Enrollment continues in our 52-week Phase 2b VOYAGE study of VK2809 in patients with NASH and fibrosis. With respect to VK0214 for the treatment of XALD, the second quarter was extremely productive. Last month, we reported promising data from our Phase 1 study of VK0214 in healthy volunteers. Based on these results, we recently initiated a Phase 1b trial of VK0214 in adult male patients with the adrenomyeloneuropathy form of XALD. Finally, we continue to take steps to carefully manage our cash and maintain a strong balance sheet in order to support our ongoing trials and advance them into later stage development. This concludes our prepared remarks for today. Thanks again for joining us and we’ll now open the call for questions. Operator?