Brief Research ReportPublished 4 August 2026Immunoglobulin replacement therapy in antineutrophil cytoplasmic antibody-associated vasculitis with rituximab-associated hypogammaglobulinemia: infection outcomes and disease course in a retrospective cohortMatthew Gross · Aditi Singh · Raj Roshan · Antoine Azar · Duvuru GeethaFrontiers in Nephrologydoi 10.3389/fneph.2026.1861999