Silent recovery of native kidney function after transplantation in a patient with membranous nephropathy

Area of Science:

• Nephrology
• Transplantation immunology

Background:

• Membranous nephropathy (MN) recurrence post-kidney transplant is well-documented.
• The natural history of MN in native kidneys after transplantation remains largely uncharacterized.
• Progression of native kidney disease is typically assumed to follow its natural course post-transplant.

Observation:

• A patient with end-stage renal disease due to MN underwent a transplant.
• Eight years post-transplant, nephrectomy of the native kidneys was performed due to chronic rejection.
• Unexpectedly, partial recovery of residual native kidney function was observed post-nephrectomy.

Findings:

• This case presents the first reported instance of partial native kidney function recovery in membranous nephropathy after transplantation.
• The recovery occurred despite the patient's end-stage renal disease diagnosis and subsequent nephrectomy.

Implications:

• The findings suggest a potential role for immunosuppressive agents, particularly calcineurin inhibitors, in influencing the course of membranous nephropathy.
• Further investigation is warranted to understand the mechanisms behind this observed functional recovery.
• This case challenges the assumption of an irreversible 'natural' course for native kidney disease in transplant recipients.