RT Journal Article T1 IgA Nephropathy in Elderly Patients. A1 Sevillano, Angel M A1 Diaz, Monserrat A1 Caravaca-Fontan, Fernando A1 Barrios, Clara A1 Bernis, Carmen A1 Cabrera, Jimena A1 Calviño, Jesus A1 Castillo, Lorena A1 Cobelo, Carmen A1 Delgado-Mallen, Patricia A1 Espinosa, Mario A1 Fernandez-Juarez, Gema A1 Fernandez-Reyes, Maria Jose A1 Garcia-Osuna, Rosa A1 Garcia, Patricia A1 Goicoechea, Marian A1 Gonzalez-Cabrera, Fayna A1 Guzman, Diomaris A A1 Heras, Manuel A1 Martin-Reyes, Guillermo A1 Martinez, Alberto A1 Olea, Teresa A1 Peña, Jessy Korina A1 Quintana, Luis F A1 Rabasco, Cristina A1 Lopez Revuelta, Katia A1 Rodas, Lida A1 Rodriguez-Mendiola, Nuria A1 Rodriguez, Eva A1 San Miguel, Luz A1 Sanchez de la Nieta, Maria Dolores A1 Shabaka, Amir A1 Sierra, Milagros A1 Valera, Alfonso A1 Velo, Mercedes A1 Verde, Eduardo A1 Ballarin, Jose A1 Noboa, Oscar A1 Moreno, Juan Antonio A1 Gutierrez, Eduardo A1 Praga, Manuel K1 Angiotensins K1 Anticoagulants K1 Biopsy K1 Erythrocytes K1 Glomerulonephritis, IGA K1 Hematuria K1 IgA nephropathy K1 Incidence K1 Kidney function tests K1 Prognosis K1 Renal replacement therapy K1 Renin K1 Retrospective studies AB Some studies suggest that the incidence of IgA nephropathy is increasing in older adults, but there is a lack of information about the epidemiology and behavior of the disease in that age group. In this retrospective multicentric study, we analyzed the incidence, forms of presentation, clinical and histologic characteristics, treatments received, and outcomes in a cohort of 151 patients ≥65 years old with biopsy-proven IgA nephropathy diagnosed between 1990 and 2015. The main outcome was a composite end point of kidney replacement therapy or death before kidney replacement therapy. We found a significant increase in the diagnosis of IgA nephropathy over time from six patients in 1990-1995 to 62 in 2011-2015 (P value for trend =0.03). After asymptomatic urinary abnormalities (84 patients; 55%), AKI was the most common form of presentation (61 patients; 40%). Within the latter, 53 (86%) patients presented with hematuria-related AKI (gross hematuria and tubular necrosis associated with erythrocyte casts as the most important lesions in kidney biopsy), and eight patients presented with crescentic IgA nephropathy. Six (4%) patients presented with nephrotic syndrome. Among hematuria-related AKI, 18 (34%) patients were receiving oral anticoagulants, and this proportion rose to 42% among the 34 patients older than 72 years old who presented with hematuria-related AKI. For the whole cohort, survival rates without the composite end point were 74%, 48%, and 26% at 1, 2, and 5 years, respectively. Age, serum creatinine at presentation, and the degree of interstitial fibrosis in kidney biopsy were risk factors significantly associated with the outcome, whereas treatment with renin-angiotensin-aldosterone blockers was associated with a lower risk. Immunosuppressive treatments were not significantly associated with the outcome. The diagnosis of IgA nephropathy among older adults in Spain has progressively increased in recent years, and anticoagulant therapy may be partially responsible for this trend. Prognosis was poor. PB American Society of Nephrology YR 2019 FD 2019-05-01 LK http://hdl.handle.net/10668/14244 UL http://hdl.handle.net/10668/14244 LA en NO Sevillano AM, Diaz M, Caravaca-Fontán F, Barrios C, Bernis C, Cabrera J, et al. IgA Nephropathy in Elderly Patients. Clin J Am Soc Nephrol. 2019 Aug 7;14(8):1183-1192 DS RISalud RD Apr 4, 2025