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Updated: Jun 27, 2026
11:54
Measurement of BK-polyomavirus Non-Coding Control Region Driven Transcriptional Activity Via Flow Cytometry
Published on: July 13, 2019
Risk factors for polyoma virus nephropathy
Olivier Prince1, Spasenija Savic, Michael Dickenmann
1Geriatric Medicine, University Hospital Basel, Switzerland.
Summary
Polyoma virus-associated nephropathy (PVN) is a significant risk for kidney transplant failure. Key risk factors include acute rejection, ATGAM induction, and maintenance immunosuppression with tacrolimus and mycophenolate.
Area of Science:
- Nephrology
- Transplantation Immunology
- Virology
Background:
- Polyoma virus-associated nephropathy (PVN) is a major cause of kidney transplant failure.
- Long-term risk factors for PVN development remain understudied in large patient cohorts.
Purpose of the Study:
- To identify risk factors for Polyoma virus-associated nephropathy (PVN) in a large cohort of kidney transplant recipients over a 20-year period.
- To analyze the association between immunosuppressive therapies and PVN development.
Main Methods:
- Retrospective analysis of clinical, renal biopsy, and urinary cytology data from 880 kidney transplant patients (1985-2005).
- Patients categorized into three groups: no PV infection, PV reactivation (decoy cells), and biopsy-proven PVN.
- Statistical analysis to determine factors associated with PVN development.
Main Results:
- The prevalence of biopsy-proven PVN was 3.3% in the study cohort.
- Significant risk factors for PVN included mycophenolate/tacrolimus immunosuppression, ATGAM induction therapy, male recipient gender, and multiple transplant rejection episodes.
- Acute rejection and specific immunosuppressive agents were strongly linked to PVN.
Conclusions:
- Acute rejection episodes and induction therapy with ATGAM are critical risk factors for PVN.
- Maintenance immunosuppression with tacrolimus and mycophenolate is associated with PVN development.
- Close monitoring for PVN is recommended for kidney transplant recipients on tacrolimus and mycophenolate therapy.
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