ASN's Mission

To create a world without kidney diseases, the ASN Alliance for Kidney Health elevates care by educating and informing, driving breakthroughs and innovation, and advocating for policies that create transformative changes in kidney medicine throughout the world.

learn more

Contact ASN

1401 H St, NW, Ste 900, Washington, DC 20005


The Latest on X

Kidney Week

Please note that you are viewing an archived section from 2023 and some content may be unavailable. To unlock all content for 2023, please visit the archives.

Abstract: SA-PO870

Safety and Efficacy of Avacopan in Patients 65 Years and Older with ANCA-Associated Vasculitis

Session Information

Category: Glomerular Diseases

  • 1402 Glomerular Diseases: Clinical, Outcomes, and Trials


  • Geetha, Duvuru, Johns Hopkins University, Baltimore, Maryland, United States
  • Pagnoux, Christian, University of Toronto, Toronto, Ontario, Canada
  • Sattui, Sebastian E., University of Pittsburgh, Pittsburgh, Pennsylvania, United States
  • Merkel, Peter A., University of Pennsylvania, Philadelphia, Pennsylvania, United States
  • Jayne, David R.W., University of Cambridge, Cambridge, United Kingdom

Group or Team Name

  • ADVOCATE Study Group.

Older adults are at increased risk of glucocorticoid (GC)-related toxicity; minimization of GCs is a major focus for treatment of patients with ANCA-associated vasculitis (AAV). Although AAV especially affects older adults, many studies have excluded patients >75 years (y). In the Phase 3 ADVOCATE trial of avacopan, there was no exclusion criterion for maximum participant age.


This post hoc analysis reports safety and efficacy of avacopan compared to a prednisone taper in the subgroups of patients 65-74y (N=109) and ≥75y (N=51).


In both studied age and treatment groups, a similar proportion of patients (69.4-73.1%) achieved remission at week 26 (Table 1). In the 65-74y age group, sustained remission rates at week 52 were 55.1% in the prednisone arm and 65.0% in the avacopan arm. Relapse rates were 18.8% in the prednisone arm and 12.3% in the avacopan arm. The total all-source median GC dose was 5.3x higher in the prednisone vs avacopan arm. Serious adverse events (SAEs) occurred in 22/49 patients (45%) in the prednisone arm (2 deaths) and 25/60 patients (42%) in the avacopan arm (2 deaths). In the ≥75y age group, sustained remission rates at week 52 were 56.0% in the prednisone arm and 65.4% in the avacopan arm. Relapse rates were 20.8% in the prednisone arm and 3.8% in the avacopan arm. Median GC dose was 4.8x higher in the prednisone vs avacopan arm. SAEs occurred in 14/25 patients (56%) in the prednisone arm and 17/26 patients (65%) in the avacopan arm. Other results including renal and quality of life outcomes are in Table 1.


A subgroup analysis of patients ≥65y demonstrated similar trends of efficacy and safety of avacopan as in the overall ADVOCATE trial, including reductions in GC-related toxicities, supporting a role for avacopan in the treatment of older patients with AAV.


  • Commercial Support – Amgen