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1. Is there long-term value of pathology scoring in immunoglobulin A nephropathy? A validation study of the Oxford Classification for IgA Nephropathy (VALIGA) update

Author

Coppo, R., D'Arrigo, G., Tripepi, G., Russo, M. L., Roberts, I. S. D., Bellur, S., Cattran, D., Cook, T. H., Feehally, J., Tesar, V., Maixnerova, D., Peruzzi, L., Amore, A., Lundberg, S., Di Palma, A. M., Gesualdo, L., Emma, F., Rollino, C., Praga, M., Biancone, L., Pani, A., Feriozzi, S., Polci, R., Barratt, J., Del Vecchio, L., Locatelli, F., Pierucci, A., Caliskan, Y., Perkowska-Ptasinska, A., Durlik, M., Moggia, E., Ballarin, J. C., Wetzels, J. F. M., Goumenos, D., Papasotiriou, M., Galesic, K., Toric, L., Papagianni, A., Stangou, M., Benozzi, L., Cusinato, S., Berg, U., Topaloglu, R., Maggio, M., Ots-Rosenberg, M., D'Amico, M., Geddes, C., Balafa, O., Quaglia, M., Cravero, R., Cirami, C. L., Fellstrom, B., Floege, J., Egido, J., Mallamaci, F., Zoccali, C., Fuiano, L., Beltrame, G., Camilla, R., Segoloni, G., Colla, L., Angioi, A., Piras, L., Cancarini, G., Ravera, S., Ballarin, J., Di Giulio, S., Pugliese, F., Serriello, I., Sever, M., Kilicaslan, I., Peters, H., Carvalho, F., Da Costa Ferreira, A. C., Wiecek, A., Magistroni, R., Bilginer, Y., Giacchino, F., Papastirou, M., Siamopoulos, K., Galliani, M., Stratta, P., Bergia, R., Salvadori, M., Cirami, L., Kloster Smerud, H., Ferrario, F., Stellato, T., Martin, C., Eitner, F., Rauen, T., Lupo, A., Bernich, P., Mene, P., Morosetti, M., Van Kooten, C., Rabelink, T., Reinders, M. E. J., Boria Grinyo, J. M., Savoldi, S., Licata, C., Mizerska-Wasiak, M., Roszkowska-Blaim, M., Martina, G., Messuerotti, A., Dal Canton, A., Esposito, C., Migotto, C., Triolo, G., Mariano, F., Pozzi, C., Boero, R., Mazzucco, G., Giannakakis, C., Honsova, E., Sundelin, B., Gutierrez, E., Asunis, A. M., Tardanico, R., Arce Terroba, J., Fortunato, M., Pantzaki, A., Ozluk, Y., Steenbergen, E., Soderberg, M., Riispere, Z., Furci, L., Orhan, D., Kipgen, D., Casartelli, D., Galesic Ljubanovic, D., Akiopoulou, H., Bertoni, E., Cannata Ortiz, P., Karkoszka, H., Groene, H. J., Stoppacciaro, A., Bajema, I., Bruijn, J., Fulladosa Oliveras, X., Maldyk, J., Ioachim, E., and Internal Medicine

Subjects
Adult, Male, Pathology, medicine.medical_specialty, Adolescent, 030232 urology & nephrology, Renal function, 030204 cardiovascular system & hematology, Kidney, Nephropathy, Cohort Studies, 03 medical and health sciences, Glomerulonephritis, 0302 clinical medicine, renal biopsy, Interquartile range, IgA nephropathy, progression, risk factors, Child, Disease Progression, Female, Follow-Up Studies, Glomerular Filtration Rate, Glomerulonephritis, IGA, Humans, Prognosis, Medicine, Endocapillary hypercellularity, IGA, Transplantation, medicine.diagnostic_test, business.industry, medicine.disease, medicine.anatomical_structure, Renal pathology, Nephrology, Cohort, Renal biopsy, Renal disorders Radboud Institute for Health Sciences [Radboudumc 11], business
Abstract

Background It is unknown whether renal pathology lesions in immunoglobulin A nephropathy (IgAN) correlate with renal outcomes over decades of follow-up. Methods In 1130 patients of the original Validation Study of the Oxford Classification for IgA Nephropathy (VALIGA) cohort, we studied the relationship between the MEST score (mesangial hypercellularity, M; endocapillary hypercellularity, E; segmental glomerulosclerosis, S; tubular atrophy/interstitial fibrosis, T), crescents (C) and other histological lesions with both a combined renal endpoint [50% estimated glomerular filtration rate (eGFR) loss or kidney failure] and the rate of eGFR decline over a follow-up period extending to 35 years [median 7 years (interquartile range 4.1–10.8)]. Results In this extended analysis, M1, S1 and T1–T2 lesions as well as the whole MEST score were independently related with the combined endpoint (P Conclusion Long-term follow-up analyses of the VALIGA cohort showed that the independent relationship between kidney biopsy findings and the risk of progression towards kidney failure in IgAN remains unchanged across all age groups and decades after the renal biopsy.

Published
2020
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2. Quantifying duration of proteinuria remission and association with clinical outcome in IgA nephropathy

Author

Canney, M., Barbour, S. J., Zheng, Y., Coppo, R., Zhang, H., Liu, Z. -H., Matsuzaki, K., Suzuki, Y., Katafuchi, R., Reich, H. N., Cattran, D., Russo, M. L., Troyanov, S., Cook, H. T., Roberts, I., Tesar, V., Maixnerova, D., Lundberg, S., Gesualdo, L., Emma, F., Fuiano, L., Beltrame, G., Rollino, C., Amore, A., Camilla, R., Peruzzi, L., Praga, M., Feriozzi, S., Polci, R., Segoloni, G., Colla, L., Pani, A., Piras, D., Angioi, A., Cancarini, G., Ravera, S., Durlik, M., Moggia, E., Ballarin, J., Di Giulio, S., Pugliese, F., Serriello, I., Caliskan, Y., Sever, M., Kilicaslan, I., Locatelli, F., Del Vecchio, L., Wetzels, J. F. M., Peters, H., Berg, U., Carvalho, F., da Costa Ferreira, A. C., Maggio, M., Wiecek, A., Ots-Rosenberg, M., Magistroni, R., Topaloglu, R., Bilginer, Y., D'Amico, M., Stangou, M., Giacchino, F., Goumenos, D., Kalliakmani, P., Gerolymos, M., Galesic, K., Geddes, C., Siamopoulos, K., Balafa, O., Galliani, M., Stratta, P., Quaglia, M., Bergia, R., Cravero, R., Salvadori, M., Cirami, L., Fellstrom, B., Kloster Smerud, H., Ferrario, F., Stellato, T., Egido, J., Martin, C., Floege, J., Eitner, F., Lupo, A., Bernich, P., Mene, P., Morosetti, M., van Kooten, C., Rabelink, T., Reinders, M. E. J., Boria Grinyo, J. M., Cusinato, S., Benozzi, L., Savoldi, S., Licata, C., Mizerska-Wasiak, M., Martina, G., Messuerotti, A., Dal Canton, A., Esposito, C., Migotto, C., Triolo, G., Mariano, F., Pozzi, C., Boero, R., Bellur, S., Mazzucco, G., Giannakakis, C., Honsova, E., Sundelin, B., Di Palma, A. M., Gutierrez, E., Asunis, A. M., Barratt, J., Tardanico, R., Perkowska-Ptasinska, A., Arce Terroba, J., Fortunato, M., Pantzaki, A., Ozluk, Y., Steenbergen, E., Soderberg, M., Riispere, Z., Furci, L., Orhan, D., Kipgen, D., Casartelli, D., Galesic Ljubanovic, D., Gakiopoulou, H., Bertoni, E., Cannata Ortiz, P., Karkoszka, H., Groene, H. J., Stoppacciaro, A., Bajema, I., Bruijn, J., Fulladosa Oliveras, X., Maldyk, J., Ioachim, E., Bavbek, N., Cook, T., Alpers, C., Feehally, J., Berthoux, F., Bonsib, S., D'Agati, V., D'Amico, G., Emancipator, S., Emmal, F., Fervenza, F., Florquin, S., Fogo, A., Groene, H., Haas, M., Hill, P., Hogg, R., Hsu, S., Hunley, T., Hladunewich, Jennette, C., Joh, K., Julian, B., Kawamura, T., Lai, F., Leung, C., Li, L., Li, P., Liu, Z., Massat, A., Mackinnon, B., Mezzano, S., Schena, F., Tomino, Y., Walker, P., Wang, H., Weening, J., Yoshikawa, N., Zeng, C. -H., Shi, S., Nogi, C., Suzuki, H., Koike, K., Hirano, K., Yokoo, T., Hanai, M., Fukami, K., Takahashi, K., Yuzawa, Y., Niwa, M., Yasuda, Y., Maruyama, S., Ichikawa, D., Suzuki, T., Shirai, S., Fukuda, A., Fujimoto, S., Trimarchi, H., Anesthesiology, Pathology, Graduate School, ACS - Heart failure & arrhythmias, and ACS - Atherosclerosis & ischemic syndromes

Subjects
Male, Time Factors, glomerular disease, 030232 urology & nephrology, 030204 cardiovascular system & hematology, Gastroenterology, 0302 clinical medicine, Outcome Assessment, Health Care, Clinical endpoint, Medicine, Clinical Epidemiology, Proteinuria, medicine.diagnostic_test, Remission Induction, Hazard ratio, IgA nephropathy, General Medicine, Middle Aged, end stage kidney disease, epidemiology and outcomes, proteinuria, renal function decline, renal pathology, 3. Good health, Renal pathology, Nephrology, Disease Progression, Female, medicine.symptom, Glomerular Filtration Rate, Adult, medicine.medical_specialty, Nephropathy, 03 medical and health sciences, Internal medicine, Biopsy, Humans, Proportional Hazards Models, Retrospective Studies, business.industry, Surrogate endpoint, Glomerulonephritis, IGA, medicine.disease, Confidence interval, Renal disorders Radboud Institute for Molecular Life Sciences [Radboudumc 11], Kidney Failure, Chronic, Renal disorders Radboud Institute for Health Sciences [Radboudumc 11], business
Abstract

Contains fulltext : 232930.pdf (Publisher’s version ) (Closed access) BACKGROUND: On the basis of findings of observational studies and a meta-analysis, proteinuria reduction has been proposed as a surrogate outcome in IgA nephropathy. How long a reduction in proteinuria needs to be maintained to mitigate the long-term risk of disease progression is unknown. METHODS: In this retrospective multiethnic cohort of adult patients with IgA nephropathy, we defined proteinuria remission as a ≥25% reduction in proteinuria from the peak value after biopsy, and an absolute reduction in proteinuria to

Published
2021

3. Evaluating a New International Risk-Prediction Tool in IgA Nephropathy

Author

Barbour, S.J., Coppo, R., Zhang, H., Liu, Z.H., Suzuki, Y., Matsuzaki, K., Katafuchi, R., Er, L., Espino-Hernandez, G., Kim, S.J., Reich, H.N., Feehally, J., Cattran, D.C., Russo, M.L., Troyanov, S., Cook, H.T., Roberts, I., Tesar, V., Maixnerova, D., Lundberg, S., Gesualdo, L., Emma, F., Fuiano, L., Beltrame, G., Rollino, C., Amore, A., Camilla, R., Peruzzi, L., Praga, M., Feriozzi, S., Polci, R., Segoloni, G., Colla, L., Pani, A., Piras, D., Angioi, A., Cancarini, G., Ravera, S., Durlik, M., Moggia, E., Ballarin, J., Giulio, S. di, Pugliese, F., Serriello, I., Caliskan, Y., Sever, M., Kilicaslan, I., Locatelli, F., Vecchio, L. del, Wetzels, J.F.M., Peters, H., Berg, U., Carvalho, F., Ferreira, A.C.D., Maggio, M., Wiecek, A., Ots-Rosenberg, M., Magistroni, R., Topaloglu, R., Bilginer, Y., D'Amico, M., Stangou, M., Giacchino, F., Goumenos, D., Kalliakmani, P., Gerolymos, M., Galesic, K., Geddes, C., Siamopoulos, K., Balafa, O., Galliani, M., Stratta, P., Quaglia, M., Bergia, R., Cravero, R., Salvadori, M., Cirami, L., Fellstrorn, B., Smerud, H.K., Ferrario, F., Stellato, T., Egido, J., Martin, C., Floege, J., Eitner, F., Lupo, A., Bernich, P., Mene, R., Morosetti, M., Kooten, C. van, Rabelink, T., Reinders, M.E.J., Grinyo, J.M.B., Cusinato, S., Benozzi, L., Savoldi, S., Licata, C., Mizerska-Wasiak, M., Martina, G., Messuerotti, A., Canton, A. dal, Esposito, C., Migotto, C., Triolo, G., Mariano, F., Pozzi, C., Boero, R., Bellur, S., Mazzucco, G., Giannakakis, C., Honsova, E., Sundelin, B., Palma, A.M. di, Gutierrez, E., Asunis, A.M., Barratt, J., Tardanico, R., Perkowska-Ptasinska, A., Terroba, J.A., Fortunato, M., Pantzaki, A., Ozluk, Y., Steenbergen, E., Soderberg, M., Riispere, Z., Furci, L., Orhan, D., Kipgen, D., Casartelli, D., Ljubanovic, D.G., Gakiopoulou, H., Bertoni, E., Ortiz, P.C., Karkoszka, H., Groene, H.J., Stoppacciaro, A., Bajema, I., Bruijn, J., Oliveras, X.F., Maldyk, J., Loachim, E., Bavbek, N., Cook, T., Alpers, C., Berthoux, F., Bonsib, S., D'Agati, V., D'Amico, G., Emancipator, S., Emmal, F., Fervenza, F., Florquin, S., Fogo, A., Groene, H., Haas, M., Hill, P., Hogg, R., Hsu, S., Hunley, T., Hladunewich, Jennette, C., Joh, K., Julian, B., Kawamura, T., Lai, F., Leung, C., Li, L., Li, P., Liu, Z., Massat, A., Mackinnon, B., Mezzano, S., Schena, F., Tomino, Y., Walker, P., Wang, H., Weening, J., Yoshikawa, N., Zeng, C.H., Shi, S.F., Nogi, C., Suzuki, H., Koike, K., Hirano, K., Yokoo, T., Hanai, M., Fukami, K., Takahashi, K., Yuzawa, Y., Niwa, M., Yasuda, Y., Maruyama, S., Ichikawa, D., Suzuki, T., Shirai, S., Fukuda, A., Fujimoto, S., Trimarchi, H., Int IgA Nephropathy Network, and Pathology

Subjects
Adult, Male, medicine.medical_specialty, Risk Assessment, 01 natural sciences, Nephropathy, 03 medical and health sciences, 0302 clinical medicine, Interquartile range, Internal medicine, Internal Medicine, Humans, Medicine, 030212 general & internal medicine, 0101 mathematics, business.industry, Proportional hazards model, Clinical study design, 010102 general mathematics, Glomerulonephritis, IGA, Middle Aged, Models, Theoretical, medicine.disease, Clinical trial, Cohort, Female, business, Risk assessment, Kidney disease
Abstract

ImportanceAlthough IgA nephropathy (IgAN) is the most common glomerulonephritis in the world, there is no validated tool to predict disease progression. This limits patient-specific risk stratification and treatment decisions, clinical trial recruitment, and biomarker validation. ObjectiveTo derive and externally validate a prediction model for disease progression in IgAN that can be applied at the time of kidney biopsy in multiple ethnic groups worldwide. Design, Setting, and ParticipantsWe derived and externally validated a prediction model using clinical and histologic risk factors that are readily available in clinical practice. Large, multi-ethnic cohorts of adults with biopsy-proven IgAN were included from Europe, North America, China, and Japan. Main Outcomes and MeasuresCox proportional hazards models were used to analyze the risk of a 50% decline in estimated glomerular filtration rate (eGFR) or end-stage kidney disease, and were evaluated using the R-D(2) measure, Akaike information criterion (AIC), C statistic, continuous net reclassification improvement (NRI), integrated discrimination improvement (IDI), and calibration plots. ResultsThe study included 3927 patients; mean age, 35.4 (interquartile range, 28.0-45.4) years; and 2173 (55.3%) were men. The following prediction models were created in a derivation cohort of 2781 patients: a clinical model that included eGFR, blood pressure, and proteinuria at biopsy; and 2 full models that also contained the MEST histologic score, age, medication use, and either racial/ethnic characteristics (white, Japanese, or Chinese) or no racial/ethnic characteristics, to allow application in other ethnic groups. Compared with the clinical model, the full models with and without race/ethnicity had better R-D(2) (26.3% and 25.3%, respectively, vs 20.3%) and AIC (6338 and 6379, respectively, vs 6485), significant increases in C statistic from 0.78 to 0.82 and 0.81, respectively (Delta C, 0.04; 95% CI, 0.03-0.04 and Delta C, 0.03; 95% CI, 0.02-0.03, respectively), and significant improvement in reclassification as assessed by the NRI (0.18; 95% CI, 0.07-0.29 and 0.51; 95% CI, 0.39-0.62, respectively) and IDI (0.07; 95% CI, 0.06-0.08 and 0.06; 95% CI, 0.05-0.06, respectively). External validation was performed in a cohort of 1146 patients. For both full models, the C statistics (0.82; 95% CI, 0.81-0.83 with race/ethnicity; 0.81; 95% CI, 0.80-0.82 without race/ethnicity) and R-D(2) (both 35.3%) were similar or better than in the validation cohort, with excellent calibration. Conclusions and RelevanceIn this study, the 2 full prediction models were shown to be accurate and validated methods for predicting disease progression and patient risk stratification in IgAN in multi-ethnic cohorts, with additional applications to clinical trial design and biomarker research.

Published
2019

4. Tonsillectomy in a European Cohort of 1,147 Patients with IgA Nephropathy

Author

Feehally, J, Coppo, R, Troyanov, S, Bellur, Ss, Cattran, D, Cook, T, Roberts, Is, Verhave, Jc, Camilla, R, Vergano, L, Egido, J, Wiecek, A, Karkoszka, H, Tesar, V, Maixnerova, D, Ots-Rosenberg, M, Quaglia, M, Rollino, C, Magistroni, R, Cusinato, S, Cravero, R, Peruzzi, L, Lundberg, S, Gesualdo, L, Cancarini, G, Feriozzi, S, Ferrario, F, Emma, F, Fuiano, L, Beltrame, G, Amore, A, Praga, M, Polci, R, Biancone, L, Colla, L, Pani, A, Angioi, A, Piras, D, Ravera, S, Durlik, M, Moggia, E, Ballarin, J, Di Giulio, S, Pierucci, A, Caliskan, Y, Sever, M, Kilicaslan, I, Locatelli, F, Del Vecchio, L, Wetzels, Jf, Peters, H, Berg, U, Carvalho, F, da Costa Ferreira AC, Maggio, M, Topaloglu, R, Bilginer, Y, D'Amico, M, Stangou, M, Giacchino, F, Goumenos, D, Kalliakmani, P, Gerolymos, M, Galesic, K, Geddes, C, Siamopoulos, K, Balafa, O, Galliani, M, Stratta, P, Bergia, R, Salvadori, M, Cirami, L, Fellstrom, B, Kloster Smerud, H, Stellato, T, Cleary, C, Floege, J, Rauen, T, Lupo, A, Bernich, P, Menè, P, Morosetti, M, van Kooten, C, Rabelink, T, Reinders, Me, Boria Grinyo JM, Benozzi, L, Savoldi, S, Licata, C, Mizerska-Wasiak, M, Roszkowska-Blaim, M, Martina, G, Messuerotti, A, Dal Canton, A, Esposito, C, Migotto, C, Triolo, G, Mariano, F, Pozzi, C, Di Palma AM, Boero, R, Mazzucco, G, Giannakakis, C, Honsova, E, Sundelin, B, Gutiérrez, E, Asunis, Am, Barratt, J, Tardanico, R, Perkowska-Ptasinska, A, Arce Terroba, J, Fortunato, M, Pantzaki, A, Ozluk, Y, Steenbergen, E, Soderberg, M, Riispere, Z, Furci, L, Orhan, D, Kipgen, D, Casartelli, D, Galesic Ljubanovic, D, Gakiopoulou, H, Bertoni, E, Cannata Ortiz, P, Groene, Hj, Stoppacciaro, A, Bajema, I, Bruijn, J, Fulladosa Oliveras, X, Maldyk, J, and Ioachim, E.

Subjects
Male, Physiology, medicine.medical_treatment, IgA nephropathy, Tonsillectomy, Risk factors, Progression of chronic renal failure, 030232 urology & nephrology, 030204 cardiovascular system & hematology, urologic and male genital diseases, Gastroenterology, Progression of chronic renal failure, Cohort Studies, Kidney Failure, Glomerulonephritis, 0302 clinical medicine, Ethnicity, Chronic, Proteinuria, medicine.diagnostic_test, Age Factors, IgA nephropathy, Middle Aged, Europe, Treatment Outcome, Nephrology, Cohort, Disease Progression, Female, Renal biopsy, medicine.symptom, Glomerular Filtration Rate, Cohort study, Adult, medicine.medical_specialty, Urology, Renal function, Ethnic Groups, Nephropathy, iga nephropathy, tonsillectomy, risk factors, progression of chronic renal failure, 03 medical and health sciences, Sex Factors, Physiology (medical), Internal medicine, Risk factors, Tonsillectomy, medicine, Humans, Follow-Up Studies, Glomerulonephritis, IGA, Kidney Failure, Chronic, Propensity Score, Retrospective Studies, IGA, business.industry, Retrospective cohort study, medicine.disease, Renal disorders Radboud Institute for Health Sciences [Radboudumc 11], business
Abstract

Background: Tonsillectomy has been considered a treatment for IgA nephropathy (IgAN). It is aimed at removing a source of pathogens, reducing mucosa-associated lymphoid tissue and decreasing polymeric IgA synthesis. However, its beneficial effect is still controversial. In Asia, favorable outcomes have been claimed mostly in association with corticosteroids. In Europe, small, single-center uncontrolled studies have failed to show benefits. Methods: The European validation study of the Oxford classification of IgAN (VALIGA) collected data from 1,147 patients with IgAN over a follow-up of 4.7 years. We investigated the outcome of progression to end-stage renal disease (ESRD) and/or 50% loss of estimated glomerular filtration rate (eGFR) and the annual loss of eGFR in 61 patients who had had tonsillectomy. Results: Using the propensity score, which is a logistic regression model, we paired 41 patients with tonsillectomy and 41 without tonsillectomy with similar risk of progression (gender, age, race, mean blood pressure, proteinuria, eGFR at renal biopsy, previous treatments and Oxford MEST scores). No significant difference was found in the outcome. Moreover, we performed an additional propensity score pairing 17 patients who underwent tonsillectomy after the diagnosis of IgAN and 51 without tonsillectomy with similar risk of progression at renal biopsy and subsequent treatments. No significant difference was found in changes in proteinuria, or in the renal end point of 50% reduction in GFR and/or ESRD, or in the annual loss of eGFR. Conclusion: In the large VALIGA cohort of European subjects with IgAN, no significant correlation was found between tonsillectomy and renal function decline.

Published
2016

5. Primary IgA nephropathy is more severe in TGF-beta1 high secretor patients

Author

Brezzi, B., Nulld, Nulldel Prete, Lupo, A., Riccardo Magistroni, Gomez-Lira, M., Bernich, P., Anglani, F., Mezzabotta, F., Turco, A., Furci, L., Ceol, M., Antonucci, F., Abaterusso, C., Bonfante, L., D Angelo, A., Albertazzi, A., and Gambaro, G.

Subjects
IgAN, Adult, Male, renal failure, Biopsy, IgA nephropathy, TGF-beta1, genotyping, polymorphisms, Kaplan-Meier Estimate, Kidney, Risk Assessment, Severity of Illness Index, Transforming Growth Factor beta1, Young Adult, Gene Frequency, Risk Factors, Settore MED/14 - NEFROLOGIA, Humans, Genetic Predisposition to Disease, RNA, Messenger, Proportional Hazards Models, Polymorphism, Genetic, Reverse Transcriptase Polymerase Chain Reaction, Glomerulonephritis, IGA, Middle Aged, Prognosis, Up-Regulation, Phenotype, Italy, Case-Control Studies, Disease Progression, Female
Abstract

IgA nephropathy (IgAN) is the most common primary glomerulonephritis worldwide and is characterized by extremely variable clinical and morphological features and outcome. TGF-beta1 has a key role in fibrogenesis and the progression of renal damage. Its production is under genetic control.We recruited 105 Italian biopsy-proven IgAN patients for genotyping for the TGF-beta1 C-509T, T869C (COD 10) and G915C (COD 25) polymorphisms; 200 healthy blood donors were used as normal controls. Glomerular and interstitial mRNA levels of TGF-beta1 were assessed by real-time PCR in 34 patients to seek relationships with clinical, renal histopathological features and outcome.The genotype distributions in the IgAN population were not statistically different from the controls. The COD 10 TT genotype was associated with more severe histological damage as assessed by Lee's classification (CC 50%, CT 39.6% and TT 17.2% were graded as mild; CC 35.7%, CT 43.7% and TT 44.8% as moderate, and CC 14.3%, CT 16.7% and TT 37.9% as severe [p=0.0049]) and with severe interstitial infiltrates (CC 10.4%, CT 35.2% and TT 54.2% [p=0.03]). A higher interstitial immunodeposition was observed for TGF-beta1, collagen IV and alpha-SMA in patients with the COD 10 T allele (p=0.045, p=0.049, p=0.032, respectively). The T allele was associated with significantly higher TGF-beta1 mRNA levels in the interstitium (TT+CT vs. CC: 0.52 +/- 0.16 vs. 0.18 +/- 0.10 copies/mL, respectively; p=0.000). The T allele was also associated with higher mRNA levels in glomeruli, though the difference was not statistically significant. Finally, the T allele was significantly associated with a worse prognosis, the end points being reached by 40% of TT+CT and 32% of CC patients (p=0.009).In primary IgA nephropathy, the T allele of the TGF-beta1 COD 10 C/T polymorphism seems to be associated with more severe histological lesions, higher renal TGF-beta1 mRNA levels and a worse prognosis. This polymorphism seems to be functionally relevant and to have a prognostic impact.

Published
2009

6. A validated model of disease progression in IgA nephropathy

Author

Riccardo Magistroni, Furci, L., Leonelli, M., Masellis, M., Ligabue, G., Lucchi, L., Lupo, A., Brezzi, B., Gambaro, G., Manganelli, L., Pedrazzi, G., Ricardi, M., Bormioli, L., and Albertazzi, A.

Subjects
Adult, Male, Adolescent, Biopsy, Glomerulonephritis, IGA, Prognosis, Survival Rate, IgA-N, retrospectively study, renal survival, Italy, Disease Progression, Humans, Settore MED/14 - NEFROLOGIA, Female, Immunosuppressive Agents, Follow-Up Studies, Retrospective Studies
Abstract

IgA nephropathy (IgAN) is the most common primary glomerulonephritis in the general population. There is accumulating evidence that immunosuppressive treatment is efficacious in IgAN. However, it is critical to define appropriate indicators for this therapy especially in the wake of potentially deleterious side effects to immunosuppressives.This study retrospectively reviewed IgAN cases collected since 1981 to identify clinical and/or histological parameters for disease progression; 310 patients with biopsy proven IgAN, diagnosed from January 1981 to March 2004, were included.We defined a clinical prognostic index (CPI) using multivariate analysis, which incorporated these clinical/ histological parameters. Semiquantitative scores were assigned as follows: 2 points if creatinine (Cr) was1.4 mg/dL, 1 point if proteinuria was1 g/24 hr, 1 point if a patient was affected by hypertension, and 1 point if a patient was older than 30 yrs. Dividing our population into two groups (scores 0-2 = low CPI group; scores 3-5 = high CPI group), we demonstrated a significantly different 10-yr renal survival rate; in the low CPI group, renal survival since time of biopsy at 10 yrs was 91.7%; in the high CPI group the renal survival at 10 yrs was 35%. We validated the CPI in an independent sample from Verona (validation group) and demonstrated similar results for the CPI.The CPI is convenient to use for defining the risk of disease progression.

7. Application of the International IgA Nephropathy Prediction Tool one or two years post-biopsy

Author

Sean J. Barbour, Rosanna Coppo, Hong Zhang, Zhi-Hong Liu, Yusuke Suzuki, Keiichi Matsuzaki, Lee Er, Heather N. Reich, Jonathan Barratt, Daniel C. Cattran, M.L. Russo, S. Troyanov, H.T. Cook, I. Roberts, V. Tesar, D. Maixnerova, S. Lundberg, L. Gesualdo, F. Emma, L. Fuiano, G. Beltrame, C. Rollino, A. Amore, R. Camilla, L. Peruzzi, M. Praga, S. Feriozzi, R. Polci, G. Segoloni, L. Colla, A. Pani, D. Piras, A. Angioi, G. Cancarini, S. Ravera, M. Durlik, E. Moggia, J. Ballarin, S. Di Giulio, F. Pugliese, I. Serriello, Y. Caliskan, M. Sever, I. Kilicaslan, F. Locatelli, L. Del Vecchio, J.F.M. Wetzels, H. Peters, U. Berg, F. Carvalho, A.C. da Costa Ferreira, M. Maggio, A. Wiecek, M. Ots-Rosenberg, R. Magistroni, R. Topaloglu, Y. Bilginer, M. D’Amico, M. Stangou, F. Giacchino, D. Goumenos, E. Papachristou, K. Galesic, C. Geddes, K. Siamopoulos, O. Balafa, M. Galliani, P. Stratta, M. Quaglia, R. Bergia, R. Cravero, M. Salvadori, L. Cirami, B. Fellstrom, H. Kloster Smerud, F. Ferrario, T. Stellato, J. Egido, C. Martin, J. Floege, F. Eitner, A. Lupo, P. Bernich, P. Menè, M. Morosetti, C. van Kooten, T. Rabelink, M.E.J. Reinders, J.M. Boria Grinyo, S. Cusinato, L. Benozzi, S. Savoldi, C. Licata, M. Mizerska-Wasiak, G. Martina, A. Messuerotti, A. Dal Canton, C. Esposito, C. Migotto, G. Triolo, F. Mariano, C. Pozzi, R. Boero, S. Bellur, G. Mazzucco, C. Giannakakis, E. Honsova, B. Sundelin, A.M. Di Palma, E. Gutiérrez, A.M. Asunis, J. Barratt, R. Tardanico, A. Perkowska-Ptasinska, J. Arce Terroba, M. Fortunato, A. Pantzaki, Y. Ozluk, E. Steenbergen, M. Soderberg, Z. Riispere, L. Furci, D. Orhan, D. Kipgen, D. Casartelli, D. Galesic Ljubanovic, H. Gakiopoulou, E. Bertoni, P. Cannata Ortiz, H. Karkoszka, H.J. Groene, A. Stoppacciaro, I. Bajema, J. Bruijn, X. Fulladosa Oliveras, J. Maldyk, E. Ioachim, N. Bavbek, T. Cook, C. Alpers, F. Berthoux, S. Bonsib, V. D’Agati, G. D’Amico, S. Emancipator, F. Emmal, F. Fervenza, S. Florquin, A. Fogo, H. Groene, M. Haas, P. Hill, R. Hogg, S. Hsu, T. Hunley, M. Hladunewich, C. Jennette, K. Joh, B. Julian, T. Kawamura, F. Lai, C. Leung, L. Li, P. Li, Z. Liu, A. Massat, B. Mackinnon, S. Mezzano, F. Schena, Y. Tomino, P. Walker, H. Wang, J. Weening, N. Yoshikawa, C.-H. Zeng, S. Shi, C. Nogi, H. Suzuki, K. Koike, K. Hirano, T. Yokoo, M. Hanai, K. Fukami, K. Takahashi, Y. Yuzawa, M. Niwa, Y. Yasuda, S. Maruyama, D. Ichikawa, T. Suzuki, S. Shirai, A. Fukuda, S. Fujimoto, H. Trimarchi, Triolo, G., Mariano, F., Pozzi, C., Boero, R., Bellur, S., Mazzucco, G., Giannakakis, C., Honsova, E., Sundelin, B., Di Palma, A. M., Russo, M. L., Ferrario, F., Gutiérrez, E., Asunis, A. M., Barratt, J., Tardanico, R., Perkowska-Ptasinska, A., Terroba, J. Arce, Fortunato, M., Pantzaki, A., Ozluk, Y., Troyanov, S., Steenbergen, E., Soderberg, M., Riispere, Z., Furci, L., Orhan, D., Kipgen, D., Casartelli, D., Ljubanovic, D. Galesic, Gakiopoulou, H., Bertoni, E., Cook, H. T., Cannata Ortiz, P., Karkoszka, H., Groene, H. J., Stoppacciaro, A., Bajema, I., Bruijn, J., Fulladosa Oliveras, X., Maldyk, J., Ioachim, E., Bavbek, N., Roberts, I., Cook, T., Alpers, C., Amore, A., Berthoux, F., Bonsib, S., D'Agati, V., D'Amico, G., Tesar, V., Emancipator, S., Emmal, F., Fervenza, F., Florquin, S., Fogo, A., Geddes, C., Groene, H., Haas, M., Hill, P., Maixnerova, D., Hogg, R., Hsu, S., Hunley, T., Hladunewich, M., Jennette, C., Joh, K., Julian, B., Kawamura, T., Lai, F., Leung, C., Lundberg, S., Li, L., Li, P., Liu, Z., Massat, A., Mackinnon, B., Mezzano, S., Schena, F., Tomino, Y., Walker, P., Wang, H., Gesualdo, L., Weening, J., Yoshikawa, N., Zeng, C.-H., Shi, S., Nogi, C., Suzuki, H., Koike, K., Hirano, K., Yokoo, T., Emma, F., Hanai, M., Fukami, K., Takahashi, K., Yuzawa, Y., Niwa, M., Yasuda, Y., Maruyama, S., Ichikawa, D., Suzuki, T., Shirai, S., Fuiano, L., Fukuda, A., Fujimoto, S., Trimarchi, H., Beltrame, G., Rollino, C., Camilla, R., Peruzzi, L., Praga, M., Feriozzi, S., Polci, R., Segoloni, G., Colla, L., Pani, A., Piras, D., Angioi, A., Cancarini, G., Ravera, S., Durlik, M., Moggia, E., Ballarin, J., Di Giulio, S., Pugliese, F., Serriello, I., Caliskan, Y., Sever, M., Kilicaslan, I., Locatelli, F., Del Vecchio, L., Wetzels, J. F. M., Peters, H., Berg, U., Carvalho, F., da Costa Ferreira, A. C., Maggio, M., Wiecek, A., Ots-Rosenberg, M., Magistroni, R., Topaloglu, R., Bilginer, Y., D'Amico, M., Stangou, M., Giacchino, F., Goumenos, D., Papachristou, E., Galesic, K., Siamopoulos, K., Balafa, O., Galliani, M., Stratta, P., Quaglia, M., Bergia, R., Cravero, R., Salvadori, M., Cirami, L., Fellstrom, B., Smerud, H. Kloster, Stellato, T., Egido, J., Martin, C., Flöge, Jürgen, Eitner, F., Lupo, A., Bernich, P., Menè, P., Morosetti, M., van Kooten, C., Rabelink, T., Reinders, M. E. J., Boria Grinyo, J. M., Cusinato, S., Benozzi, L., Savoldi, S., Licata, C., Mizerska-Wasiak, M., Martina, G., Messuerotti, A., Dal Canton, A., Esposito, C., Migotto, C., Pathology, Center of Experimental and Molecular Medicine, Graduate School, and ACS - Heart failure & arrhythmias

Subjects
Adult, disease progression, end-stage kidney disease, IgA nephropathy, prediction tool, risk prediction, Biopsy, Glomerulonephritis, IGA, Prognosis, Cohort Studies, Renal disorders Radboud Institute for Molecular Life Sciences [Radboudumc 11], Nephrology, Humans, Renal Insufficiency, Renal disorders Radboud Institute for Health Sciences [Radboudumc 11], Glomerular Filtration Rate
Abstract

Kidney international 102(1), 160-172 (2022). doi:10.1016/j.kint.2022.02.042, Published by Elsevier, New York, NY

Published
2022
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8. Coexistence of different circulating anti-podocyte antibodies in membranous nephropathy

Author

Corrado Murtas, Pietro Ravani, Francesca Bruno, Maurizio Bruschi, Piergiorgio Messa, Riccardo Magistroni, Francesco Scolari, Giovanni Candiano, Landino Allegri, Andrea Magnano, Fernando C. Fervenza, Maria Luisa Carnevali, Gian Marco Ghiggeri, Lucia Argentiero, L. Furci, Renato Alberto Sinico, Antonella Radice, Gabriella Moroni, Loreto Gesualdo, Murtas, C, Bruschi, M, Candiano, G, Moroni, G, Magistroni, R, Magnano, A, Bruno, F, Radice, A, Furci, L, Argentiero, L, Carnevali, M, Messa, P, Scolari, F, Sinico, R, Gesualdo, L, Fervenza, F, Allegri, L, Ravani, P, and Ghiggeri, G

Subjects
Male, Registrie, nefrologia, Time Factors, Epidemiology, glomerulonefrite membranosa, Critical Care and Intensive Care Medicine, Glomerulonephritis, Membranous, Immunoglobulin G, Retrospective Studie, Medicine, Registries, antigene, Proteinuria, biology, Podocytes, Glomerulosclerosis, Focal Segmental, Middle Aged, Glomerulonephritis, Membranou, Isotype, Autoantibodie, sindrome nefrosica, Italy, Nephrology, Linear Model, Female, Neprilysin, medicine.symptom, Human, Adult, Adolescent, Logistic Model, Time Factor, Podocyte, Nephropathy, Young Adult, Antigen, Membranous nephropathy, Aldehyde Reductase, Humans, Autoantibodies, Retrospective Studies, Aged, Transplantation, business.industry, Superoxide Dismutase, Receptors, Phospholipase A2, Autoantibody, Glomerulonephritis, IGA, Original Articles, medicine.disease, Logistic Models, Phosphopyruvate Hydratase, Immunology, Linear Models, biology.protein, business
Abstract

Summary Background and objectives The discovery of different podocyte autoantibodies in membranous nephropathy (MN) raises questions about their pathogenetic and clinical meaning. This study sought to define antibody isotypes and correlations; to compare levels in MN, other glomerulonephritides, and controls; and to determine their association with clinical outcomes. Design, setting, participants, & measurements Serum IgG1 ,I gG3 ,a nd IgG4 against aldose reductase (AR), SOD2, and a-enolase (aENO) were measured at diagnosis in 186 consecutive MN patients, in 96 proteinuric controls (36 with FSGS, and 60 with IgA nephropathy), and in 92 healthy people recruited in four Italian nephrology units. Anti-phospholipase A2 receptor (PLA2r) and anti-neutral endopeptidase (NEP) IgG4 were titrated in the same specimens. Association with 1-year follow-up clinical parameters was studied in 120 patients. Results IgG4 was the most common isotype for all antibodies; IgG1 and IgG3 were nearly negligible. IgG4 levels werepositiveinasignificantproportionofMNpatients(AR,34%;SOD2,28%;aENO,43%).Antibodytiterswere higher in MN than in healthy and pathologic controls (P,0.005). Anti-NEP IgG4 did not differ from normal controls (P=0.12). Anti-PLA2r IgG4 was detected in 60% of patients and correlated with anti-AR, anti-SOD2, and anti-aENO IgG4 (P,0.001). In MN patients negative for the whole antibody panel (20%), 1-year proteinuria was lower compared with patients with at least one antibody positivity (P,0.05). Conclusions Our data suggest that IgG4 is the prevalent isotype for antibodies against cytoplasmic antigens of podocytes (AR, SOD2, aENO). Their levels were higher than in other proteinuric glomerulonephritides and in normal controls and were correlated with anti-PLA2r. Only baseline negativity for all known antibodies predicted lower 1-year proteinuria. Clin J Am Soc Nephrol 7: ccc–ccc, 2012. doi: 10.2215/CJN.02170312

Published
2012

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