Nephrotic syndrome is a kidney condition that mainly affects children and is characterized by high levels of protein in the urine, low levels of protein in the blood, and swelling. While many children respond well to steroid treatment, a large proportion experience relapses or become dependent on therapy. In some cases, the disease does not respond to standard treatments and may progress to chronic kidney disease. Recent research suggests that, in addition to genetic factors, immune system mechanisms may play a key role in the development and progression of nephrotic syndrome. In particular, some patients produce autoantibodies against nephrin, an essential protein of the kidney filtration barrier. These autoantibodies may be associated with disease activity and treatment response. The aim of this study is to investigate the presence of anti-nephrin autoantibodies in children with nephrotic syndrome and to better understand their role in disease mechanisms and clinical outcomes.The study will also explore the presence of other autoantibodies targeting components of the glomerular filtration barrier. The study will use advanced laboratory techniques, including blood tests and detailed analysis of kidney biopsy samples, to identify these antibodies and their relationship with kidney structure and function. By integrating laboratory findings with clinical data, this study aims to improve the understanding of nephrotic syndrome and support the development of more personalized diagnostic and therapeutic strategies, with the goal of improving patient outcomes and reducing unnecessary or ineffective treatments.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
50
Analysis of serum and renal biopsy material collected as part of routine clinical care. Laboratory procedures include ELISA assays for the detection of anti-nephrin and/or others anti-slit antibodies and advanced imaging techniques, such as high-resolution confocal microscopy and STED microscopy, performed for research purposes
Mayo Clinic
Rochester, Minnesota, United States
NOT_YET_RECRUITINGLudwig-Maximilians Universitat
München, Germany
NOT_YET_RECRUITINGOspedale Santa Maria Annunziata
Bagno a Ripoli, Firenze, Italy
NOT_YET_RECRUITINGMeyer Children's Hospital IRCCS
Florence, FIRENZE, Italy
RECRUITINGIRCCS Azienda Ospedaliero - Universitaria
Bologna, Italy
NOT_YET_RECRUITINGAzienda Ospedaliero Universitaria Careggi
Florence, Italy
NOT_YET_RECRUITINGOspedale S. Giovanni di Dio
Florence, Italy
NOT_YET_RECRUITINGIRCCS Istituto Giannina Gaslini
Genova, Italy
NOT_YET_RECRUITINGAzienda Ospedaliero-Universitaria di Parma
Parma, Italy
NOT_YET_RECRUITINGAzienda Ospedaliero Universitaria Pisana
Pisa, Italy
NOT_YET_RECRUITING...and 4 more locations
Analysis of anti-nephrin antibody levels
Detection of circulating anti-nephrin antibodies in serum by ELISA and localization of antibody binding in renal biopsy tissue using high-resolution confocal and STED microscopy.
Time frame: From enrollment through 5 years of follow-up
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