Lusvertikimab

NANTES, France I November 4, 2024 I OSE Immunotherapeutics SA (ISIN: FR0012127173; Mnemo: OSE), today reported positive results from the induction period of the CoTikiS randomized, double-blind, placebo-controlled, Phase 2 study of Lusvertikimab (OSE-127) demonstrating a strong efficacy and favorable safety profile in moderate to severe active ulcerative colitis (UC). Topline results from the CoTikiS Phase 2 Study The randomized, double-blind Phase 2 clinical trial CoTikiS has evaluated the efficacy and the safety of Lusvertikimab versus placebo in 136 patients with moderate to severe active UC who failed or lost response to previous treatment(s)*. CoTikiS is a 50-week study, with a 10-week induction period evaluating two doses (450mg or 850mg) of Lusvertikimab against placebo, a 24-week additional open label treatment extension period (OLE) during which all subjects received Lusvertikimab 850mg infusions every 4 weeks and a 16-week safety follow-up period free of treatment. Lusvertikimab (Lusv) met the primary efficacy endpoint defined by the improvement of the Modified Mayo Score (MMS)** at week 10 (W10) at the two doses tested and demonstrated statistically significant and clinically meaningful results on key secondary endpoints. A favorable safety profile was observed during both the induction period and during the 6 months of open-label extension period trial. 134 patients were analyzed in the W0-W10 period [group 850mg (50 patients); group 450mg (35 patients); drug group pooled 850mg + 450mg (85 patients); group placebo (49 patients)]. A total of 120 patients treated with Lusvertikimab participated to the additional 24-week OLE treatment period. Final analysis of the primary endpoint at W10*** Improvement of the global Disease Activity Index of UC (MMS) Key secondary endpoint results at W10 Clinical remission**** Endoscopic remission (endoscopic score at 0) Endoscopic improvement (endoscopic score ≤ 1 point) Ulcerative Colitis Endoscopic index of Severity***** (UCEIS score decreases at week 10) Safety Profile Lusvertikimab displayed a good safety profile and was well tolerated, with no difference between both dose groups and placebo in the incidence of drug related serious adverse events (SAEs), adverse events (AEs) leading to discontinuation, severe drug-related AEs, opportunistic infections or infusion reactions during the induction period. In addition, no safety signal was observed in the patient population who received 850mg of Lusvertikimab for an additional 24-week period in the OLE, regardless of the initial randomization groups. Pr. Arnaud Bourreille, Associate professor in Gastroenterology, Institut des Maladies de l’Appareil Digestif, Nantes University Hospital, Principal/ Scientific coordination of the CoTikiS study , said: “We are very excited to share these positive topline efficacy results which could establish Lusvertikimab as a potential new breakthrough therapeutic option for UC patients. We are beyond enthusiastic with the very high endoscopy efficacy and what it could mean for patients suffering from chronic ulcerative colitis. This promising drug-candidate with a differentiated mode of action and very good safety profile needs to be further actively explored in ulcerative colitis and in other indications. We are grateful to all the investigators and patients for their participation in this study and we are eager to present a more complete clinical and biomarkers data set in future medical congresses.” Nicolas Poirier, Chief Executive Officer of OSE Immunotherapeutics , adds: “These impressive efficacy and safety results represent a major milestone in the clinical development of Lusvertikimab and a strong catalyst for the subsequent steps. Lusvertikimab has clearly demonstrated meaningful clinical proof-of-efficacy in UC and we are now looking forward to further evaluating it in additional studies with the ultimate goal of making this innovative therapy accessible to millions of patients in need of more efficacious and safe treatments. Lusvertikimab is a pure interleukin-7 receptor antagonist mAb and we believe it has a broad first-in-class potential in various chronic inflammatory and autoimmune diseases. We look forward to making progress on this strategy and to go ahead with the most relevant partners.” * Previous corticosteroids, immunosuppressive agents or previous biological treatments. ** Ulcerative Colitis is a chronic inflammatory disease of the rectum and colon characterized by mucosal inflammation, abdominal pain associated with symptoms and frequency of diarrhea and rectal bleeding. The moderate to severe UC is measured by a Modified Mayo Score (MMS) between 4 and 9, inclusive. The primary endpoint is the mean change at Week 10 from baseline in the Modified Mayo Score, a Disease Activity Index for UC defined by the addition of the stool frequency and the rectal bleeding sub-scores (two patient’s clinical elements as Patient Reported Outcomes) and the endoscopic sub-score (mucosal endoscopy activity), assessed by an endoscopist through a central reading platform. *** An interim Futility analysis performed early (about 30% of patients) by the IDMC proposed interruption of the 450 mg group for risk of futility. The 850 mg group was initially considered as primary analysis, in the final analysis the futility of the 450mg was not confirmed. SAP (Statistical Analysis Plan) Addendum: Results of 450mg group reconsidered with all patients already included in this group. In addition, the two groups have been pooled for the drugs cohort to a global treatment effect. **** Clinical remission at Week 10, a modified Mayo score of ≤ 2 points with no individual sub-score of > 1 point and a rectal bleeding at 0, therefore a stool frequency score of 0 or 1 and an endoscopic score of 0 or 1. ***** Ulcerative Colitis Endoscopic Index of Severity, UCEIS, is a validated endoscopic scoring tool with lower interobserver variability, score change at Week 10 from baseline measuring specific subscores: vascular pattern/ presence of bleeding/ erosions and ulcerations (Pabla B S et al Gastroenterol Clin North Am. 2020). About OSE Immunotherapeutics OSE Immunotherapeutics is a biotech company dedicated to developing first-in-class assets in immuno-oncology (IO) and immuno-inflammation (I&I). The Company’s current well-balanced first-in-class clinical pipeline includes: OSE Immunotherapeutics expects to generate further significant value from its three proprietary drug discovery platforms, which are central to its ambitious goal to deliver next-generation first-in-class immunotherapies: Additional information about OSE Immunotherapeutics assets is available on the Company’s website: www.ose-immuno.com . Follow us on X and LinkedIn SOURCE: OSE Immunotherapeutics