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1.
Kidney Blood Press Res ; 46(1): 121-125, 2021.
Article in English | MEDLINE | ID: mdl-33508825

ABSTRACT

INTRODUCTION: The immunosuppressive efficiency obtained in the last decades in kidney transplantation significantly improved graft survival. However, there is still a high risk and incidence of cancer in transplant patients strongly and directly related to the type of immunosuppression. An increasing body of evidence suggests that the PI3K/Akt/mTOR pathway may play a pivotal role in the development and progression of several neoplastic diseases. CASE PRESENTATION: We describe a 47-year-old male patient who received a cadaveric primary renal transplant in November 2008 developing a poorly differentiated infiltrating and ulcerated squamous cell carcinoma (SCC) at the eye level. In this patient, the modification of an immunosuppressive regimen with introduction of rapamycin (mTOR) inhibitors and withdrawal of calcineurin inhibitors (CNIs) led to the resolution of this severe condition. CONCLUSION: The introduction of mTOR inhibitors and withdrawal of CNIs in kidney-transplanted patients with de novo eye SCC should be considered in this clinical setting.


Subject(s)
Calcineurin Inhibitors/adverse effects , Carcinoma, Squamous Cell/etiology , Eye Neoplasms/etiology , Immunosuppressive Agents/adverse effects , Kidney Transplantation/adverse effects , Sirolimus/antagonists & inhibitors , Antineoplastic Agents/therapeutic use , Carcinoma, Squamous Cell/drug therapy , Everolimus/therapeutic use , Eye Neoplasms/drug therapy , Humans , Kidney Transplantation/methods , Male , Middle Aged , TOR Serine-Threonine Kinases/antagonists & inhibitors
2.
Clin Kidney J ; 13(5): 758-767, 2020 Oct.
Article in English | MEDLINE | ID: mdl-33123355

ABSTRACT

Glomerulonephritis (GN) is the underlying cause of end-stage renal failure in 30-50% of kidney transplant recipients. It represents the primary cause of end-stage renal disease for 25% of the dialysis population and 45% of the transplant population. For patients with GN requiring renal replacement therapy, kidney transplantation is associated with superior outcomes compared with dialysis. Recurrent GN was previously considered to be a minor contributor to graft loss, but with the prolongation of graft survival, the effect of recurrent disease on graft outcome assumes increasing importance. Thus the extent of recurrence of original kidney disease after kidney transplantation has been underestimated for several reasons. This review aims to provide updated knowledge on one particular recurrent renal disease after kidney transplantation, immunoglobulin A nephropathy (IgAN). IgAN is one of the most common GNs worldwide. The pathogenesis of IgAN is complex and remains incompletely understood. Evidence to date is most supportive of a several hit hypothesis. Biopsy is mandatory not only to diagnose the disease in the native kidney, but also to identify and characterize graft recurrence of IgAN in the kidney graft. The optimal therapy for IgAN recurrence in the renal graft is unknown. Supportive therapy aiming to reduce proteinuria and control hypertension is the mainstream, with corticosteroids and immunosuppressive treatment tailored for certain subgroups of patients experiencing a rapidly progressive course of the disease with active lesions on renal biopsy and considering safety issues related to infectious complications.

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