Steroid Resistant Nephrotic Syndrome

The objective of this clinical trial was to understand whether FMT is effective in treating steroid-dependent/steroid-resistant nephrotic syndrome in children. It will also learn about the safety of FMT. The main question it was designed to answer was: Did FMT reduce participants '24-hour urine protein content? What medical problems did participants experience while using FMT? The researchers will compare FMT treatment with and without FMT on top of conventional treatment to see if FMT is effective in treating steroid-dependent/steroid-resistant nephrotic syndrome in children. Participants will receive 2 FMT treatments, 1 endoscopic injection under anesthesia, 1 oral fecal bacteria transplantation capsule intake, and follow-up visits (weeks 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, and 48) every 4 weeks from the beginning of medication to our renal specialist clinic for drug efficacy evaluation and safety testing. Blood and fecal samples were collected to determine the effects of fecal bacterial transplantation on intestinal flora, fecal metabolomics, and intestinal mucosal permeability.

The goal of this National Registry is to is to collect information from patients with rare kidney diseases, so that it that can be used for research. The purpose of this research is to: * Develop Clinical Guidelines for specific rare kidney diseases. These are written recommendations on how to diagnose and treat a medical condition. * Audit treatments and outcomes. An audit makes checks to see if what should be done is being done and asks if it could be done better. * Further the development of future treatments. Participants will be invited to participate on clinical trials and other studies. The registry has the capacity to feedback relevant information to patients and in conjunction with Patient Knows Best (Home - Patients Know Best), allows patients to provide information themselves, including their own reported quality of life and outcome measures.