Validation, Implementation, and Cost-analysis of a Strategy for Personalized Diagnosis of Rare Kidney Diseases

Chronic Kidney Diseases Clinical Trial

Official title:

Validation, Implementation, and Cost-analysis of a Strategy for Personalized Diagnosis of Rare Kidney Diseases

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06324136
• Other study ID #: KIDNEY-PNRR
• Status: Recruiting
• Phase: N/A
• Start date: July 6, 2023
• Est. completion date: December 30, 2026

Study information

• Verified date: March 2024
• Source: Meyer Children's Hospital IRCCS
• Contact: Paola Romagnani, Prof, MD, PhD
• Phone: 055 5662562
• Email: paola.romagnani[@]meyer.it
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Chronic kidney disease (CKD) affects about 10% of the world population, with high morbidity and mortality. Genetic kidney diseases are increasingly recognized across all age groups and represent over 20% of all the causes of CKD. Accurate diagnosis allows necessary and unnecessary diagnostic procedures to be defined, avoids unnecessary treatments, improves prognosis prediction, identifies other family members for genetic counseling, and defines risks for living donor kidney transplantation. The research group coordinated by the Principal Investigator has recently developed an algorithm for the genetic diagnosis in pediatric and adult patients with CKD. The application of this personalized diagnostic algorithm on a local study led to a global diagnostic yield of 70%, suggesting that this strategy has the potential to substantially improve the diagnostic approach to patients with rare kidney disorders. The aim of this study is to validate and implement these results by extending its application in a multicentric study involving nephrology units that are referral centers for rare kidney diseases at national level.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 300
• Est. completion date: December 30, 2026
• Est. primary completion date: July 31, 2026
• Accepts healthy volunteers: No
• Gender: All
• Age group: 0 Years to 70 Years

Eligibility

Inclusion Criteria:

• proteinuria and/or hematuria in the absence of immune deposits on renal biopsy or immune-mediated glomerulopathy resistant to treatment (e.g., steroids, immunosuppressive drugs);

• family history of kidney diseases and/or consanguinity;

• extrarenal involvement;

• ultrasound evidence of at least two cysts in each kidney or hyperechogenic kidneys or nephrocalcinosis;

• persistent metabolic abnormalities (metabolic acidosis or alkalosis without kidney function impairment; calcium phosphate metabolism abnormalities) after exclusion of secondary causes;

• availability of clinical information.

• signed informed consent form

Exclusion Criteria:

• Refusal by the patient, parents, or legal guardian to provide informed consent.

Related Conditions & MeSH terms

• Chronic Kidney Diseases
• Kidney Diseases
• Renal Insufficiency, Chronic

Intervention

Diagnostic Test:
• Implementation of the diagnostic algorithm
Patients will be selected based on specific clinical criteria and referred to the tertiary center for genetic testing. All selected patients will undergo genetic testing by whole-exome sequencing (WES), followed by in silico analysis for an extended panel of genes associated with kidney diseases. The results of genetic testing will be evaluated by a multidisciplinary team of experts to establish conclusive diagnosis.

Locations

Country	Name	City	State
Italy	Meyer Children's Hospital IRCCS	Firenze
Italy	Azienda Ospedaliero Universitaria Vanvitelli	Napoli
Italy	Azienda Ospedaliera Universitaria Policlinico Paolo Giaccone	Palermo

Sponsors (1)

Lead Sponsor	Collaborator
Meyer Children's Hospital IRCCS

Country where clinical trial is conducted

Italy, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Implementation of a diagnostic algorithm for personalized diagnosis of rare kidney diseases	The previously established diagnostic algorithm for rare kidney diseases will be extended to out-of-region centers with a multicenter study design.; This outcome will be assessed as diagnostic rate of the algorithm, i.e., number of conclusive genetic diagnosis/number of patients enrolled.	From enrollment of the first patient until the end of the study (up to 24 months)
Secondary	Analysis of the functional role of variant of unknown clinical significance (VUS)	Analysis of the functional role of VUS identified by WES by in vitro functional studies and 3D-organ-on-a-chip models obtained by patients-specific urine-derived renal progenitor cells (u-RPC) cultures	Form enrollment until the last follow up visit (up to 12 months)
Secondary	Identification of immunological and/or structural factors in genetic and nongenetic forms.	Identification of immunological and/or structural factors in genetic and nongenetic forms.; In particular, the investigators will assess: - the presence of anti-nephrin antibodies on serum samples and/or kidney biopsy of patients (performed for diagnostic purposes)	Form enrollment until the last follow up visit (up to 12 months)
Secondary	Cost-effectiveness of the diagnostic algorithm.	A modeled cost-effectiveness analysis (including direct and indirect medical costs) will be performed to compare the proposed diagnostic algorithm with the current standard-of-care.	From enrollment of the last patient until the end of the study (up to 24 months)