Autoantibodies Targeting Nephrin in Podocytopathies
Standard
Autoantibodies Targeting Nephrin in Podocytopathies. / Hengel, Felicitas E; Dehde, Silke; Lassé, Moritz; Zahner, Gunther; Seifert, Larissa; Schnarre, Annabel; Kretz, Oliver; Demir, Fatih; Pinnschmidt, Hans O; Grahammer, Florian; Lucas, Renke; Mehner, Lea Maxima; Zimmermann, Tom; Billing, Anja M; Oh, Jun; Mitrotti, Adele; Pontrelli, Paola; Debiec, Hanna; Dossier, Claire; Colucci, Manuela; Emma, Francesco; Smoyer, William E; Weins, Astrid; Schaefer, Franz; Alachkar, Nada; Diemert, Anke; Hogan, Julien; Hoxha, Elion; Wiech, Thorsten; Rinschen, Markus M; Ronco, Pierre; Vivarelli, Marina; Gesualdo, Loreto; Tomas, Nicola M; Huber, Tobias B; International Society of Glomerular Disease.
In: NEW ENGL J MED, Vol. 391, No. 5, 01.08.2024, p. 422-433.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Autoantibodies Targeting Nephrin in Podocytopathies
AU - Hengel, Felicitas E
AU - Dehde, Silke
AU - Lassé, Moritz
AU - Zahner, Gunther
AU - Seifert, Larissa
AU - Schnarre, Annabel
AU - Kretz, Oliver
AU - Demir, Fatih
AU - Pinnschmidt, Hans O
AU - Grahammer, Florian
AU - Lucas, Renke
AU - Mehner, Lea Maxima
AU - Zimmermann, Tom
AU - Billing, Anja M
AU - Oh, Jun
AU - Mitrotti, Adele
AU - Pontrelli, Paola
AU - Debiec, Hanna
AU - Dossier, Claire
AU - Colucci, Manuela
AU - Emma, Francesco
AU - Smoyer, William E
AU - Weins, Astrid
AU - Schaefer, Franz
AU - Alachkar, Nada
AU - Diemert, Anke
AU - Hogan, Julien
AU - Hoxha, Elion
AU - Wiech, Thorsten
AU - Rinschen, Markus M
AU - Ronco, Pierre
AU - Vivarelli, Marina
AU - Gesualdo, Loreto
AU - Tomas, Nicola M
AU - Huber, Tobias B
AU - International Society of Glomerular Disease
N1 - Copyright © 2024 Massachusetts Medical Society.
PY - 2024/8/1
Y1 - 2024/8/1
N2 - BACKGROUND: Minimal change disease and primary focal segmental glomerulosclerosis in adults, along with idiopathic nephrotic syndrome in children, are immune-mediated podocytopathies that lead to nephrotic syndrome. Autoantibodies targeting nephrin have been found in patients with minimal change disease, but their clinical and pathophysiological roles are unclear.METHODS: We conducted a multicenter study to analyze antinephrin autoantibodies in adults with glomerular diseases, including minimal change disease, focal segmental glomerulosclerosis, membranous nephropathy, IgA nephropathy, antineutrophil cytoplasmic antibody-associated glomerulonephritis, and lupus nephritis, as well as in children with idiopathic nephrotic syndrome and in controls. We also created an experimental mouse model through active immunization with recombinant murine nephrin.RESULTS: The study included 539 patients (357 adults and 182 children) and 117 controls. Among the adults, antinephrin autoantibodies were found in 46 of the 105 patients (44%) with minimal change disease, 7 of 74 (9%) with primary focal segmental glomerulosclerosis, and only in rare cases among the patients with other conditions. Of the 182 children with idiopathic nephrotic syndrome, 94 (52%) had detectable antinephrin autoantibodies. In the subgroup of patients with active minimal change disease or idiopathic nephrotic syndrome who were not receiving immunosuppressive treatment, the prevalence of antinephrin autoantibodies was as high as 69% and 90%, respectively. At study inclusion and during follow-up, antinephrin autoantibody levels were correlated with disease activity. Experimental immunization induced a nephrotic syndrome, a minimal change disease-like phenotype, IgG localization to the podocyte slit diaphragm, nephrin phosphorylation, and severe cytoskeletal changes in mice.CONCLUSIONS: In this study, circulating antinephrin autoantibodies were common in patients with minimal change disease or idiopathic nephrotic syndrome and appeared to be markers of disease activity. Their binding at the slit diaphragm induced podocyte dysfunction and nephrotic syndrome, which highlights their pathophysiological significance. (Funded by Deutsche Forschungsgemeinschaft and others.).
AB - BACKGROUND: Minimal change disease and primary focal segmental glomerulosclerosis in adults, along with idiopathic nephrotic syndrome in children, are immune-mediated podocytopathies that lead to nephrotic syndrome. Autoantibodies targeting nephrin have been found in patients with minimal change disease, but their clinical and pathophysiological roles are unclear.METHODS: We conducted a multicenter study to analyze antinephrin autoantibodies in adults with glomerular diseases, including minimal change disease, focal segmental glomerulosclerosis, membranous nephropathy, IgA nephropathy, antineutrophil cytoplasmic antibody-associated glomerulonephritis, and lupus nephritis, as well as in children with idiopathic nephrotic syndrome and in controls. We also created an experimental mouse model through active immunization with recombinant murine nephrin.RESULTS: The study included 539 patients (357 adults and 182 children) and 117 controls. Among the adults, antinephrin autoantibodies were found in 46 of the 105 patients (44%) with minimal change disease, 7 of 74 (9%) with primary focal segmental glomerulosclerosis, and only in rare cases among the patients with other conditions. Of the 182 children with idiopathic nephrotic syndrome, 94 (52%) had detectable antinephrin autoantibodies. In the subgroup of patients with active minimal change disease or idiopathic nephrotic syndrome who were not receiving immunosuppressive treatment, the prevalence of antinephrin autoantibodies was as high as 69% and 90%, respectively. At study inclusion and during follow-up, antinephrin autoantibody levels were correlated with disease activity. Experimental immunization induced a nephrotic syndrome, a minimal change disease-like phenotype, IgG localization to the podocyte slit diaphragm, nephrin phosphorylation, and severe cytoskeletal changes in mice.CONCLUSIONS: In this study, circulating antinephrin autoantibodies were common in patients with minimal change disease or idiopathic nephrotic syndrome and appeared to be markers of disease activity. Their binding at the slit diaphragm induced podocyte dysfunction and nephrotic syndrome, which highlights their pathophysiological significance. (Funded by Deutsche Forschungsgemeinschaft and others.).
U2 - 10.1056/NEJMoa2314471
DO - 10.1056/NEJMoa2314471
M3 - SCORING: Journal article
C2 - 38804512
VL - 391
SP - 422
EP - 433
JO - NEW ENGL J MED
JF - NEW ENGL J MED
SN - 0028-4793
IS - 5
ER -