Comparing the Performance of Serum Creatinine and Cystatin C-based GFR Estimations in Predicting Directly Measured GFR in Patients With or Without Nephrotic Syndrome
Condition(s) studied
Investigational drug(s) / intervention(s)
Sample analyses: Immunoturbidimetric assay for determination of serum Cys-C levels and the Chronic Kidney Disease Epidemiology (CKD-EPI) equation for GFR estimation
Study summary
This observational study relates to subjects with primary membranous nephropathy enrolled in the ongoing PEPTIDE, MONET, and ORION clinical trials performed and coordinated by IRFMN (NCT04095156, NCT04893096, and NCT05050214 respectively) to assess the efficacy of anti-CD20 or anti-CD38 monoclonal antibodies (rituximab and obinutuzumab) or anti-CD38 monoclonal antibody (felzartamab) therapy in inducing remission of NS during 1-year follow-up.
Serum samples for measurement of Cystatin C (Cys-C), a low-molecular-weight protein, will be identified among those of the patients with NS who provided consent to store their samples at the Centro di Ricerche Cliniche per le Malattie Rare "Aldo e Cele Daccò", Ranica (BG) in the certified biobank UNI EN ISO 9001:2015; certification n° 6121 - Centro di Risorse Biologiche Mario Negri - Biobanca Malattie Rare e Malattie Renali (CRB).
Measured GFR by plasma clearance of iohexol, as well as serum Cr or CKD EPI values in addition to the hematochemical and urinary parameters, are already available because measured during the studies in which the subjects were enrolled.
Serum samples will be tested by Laboratorio Analisi Chimico-Cliniche Area Specialistica del Settore Autoimmunità ASST Papa Giovanni XXIII, Bergamo.
Eligibility
Primary outcome measure(s)
- Accuracy of eGRF equation — Measurements at baseline and at 1 year after treatment.
To assess the accuracy of the eGFR equation using serum creatinine and cystatin C to estimate mGFR, evaluated using the Concordance Correlation Coefficient (CCC) as the primary indicator.
Trial sites (2)
| Facility | City | Region | Status |
|---|---|---|---|
| ASST Papa Giovanni XXIII | Bergamo | BG | |
| Centro di Ricerche Cliniche per le Malattie Rare Aldo e Cele Daccò | Ranica | BG |
More Mario Negri Institute for Pharmacological Research trials in Italy
Other trials for the same condition
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
View NCT06797609 on ClinicalTrials.gov ↗ ← All trials in Italy