Vera Therapeutics Completes Full Enrollment in Pivotal ORIGIN Phase 3 Trial for Atacicept in IgAN

Core Insights - Vera Therapeutics has completed full enrollment in the pivotal ORIGIN Phase 3 trial of atacicept for IgA Nephropathy (IgAN) with a total of 431 participants, marking a significant milestone towards potential FDA approval [1][2] - The company anticipates primary efficacy endpoint data from the trial within the current quarter, supporting a planned Biologics License Application (BLA) for accelerated approval to the U.S. FDA in the second half of 2025 [2][8] - Atacicept has received FDA Breakthrough Therapy Designation, indicating its potential to significantly improve treatment outcomes for IgAN patients compared to existing therapies [7] Enrollment and Trial Details - The ORIGIN 3 trial is a global, multicenter, randomized, double-blind, placebo-controlled study evaluating the safety and efficacy of atacicept in patients with IgAN who have persistent proteinuria [2][3] - Participants are randomized to receive either atacicept 150 mg or placebo via self-administered weekly subcutaneous injections for a 104-week double-blind period, followed by a 52-week open-label extension [2] Efficacy and Safety Data - The primary efficacy endpoint is the change in proteinuria measured by urine protein to creatinine ratio (UPCR) through 36 weeks, with a key secondary endpoint assessing kidney function via estimated glomerular filtration rate (eGFR) over 104 weeks [3] - The Phase 2b ORIGIN trial demonstrated significant reductions in proteinuria and stabilization of eGFR, supporting the efficacy of atacicept [6] Future Plans and Market Position - The company plans to submit a BLA for atacicept in the second half of 2025, with a potential commercial launch in 2026 [2][8] - Vera Therapeutics retains all global developmental and commercial rights to atacicept and is also developing MAU868, a monoclonal antibody targeting BK virus [9]