Post-transplant Monoclonal Gammopathy of Renal Significance: A Case Series

Monoclonal gammopathy of renal significance (MGRS) is a new concept with evolving evidence for treatment. MGRS in the transplant kidney is a rare cause of renal transplant dysfunction that can lead to graft loss. Most cases of post-transplant MGRS are due to recurrent disease. Clone-specific chemotherapy is required to target the underlying clone, and this may improve graft survival; however, this can be challenging, as most patients are elderly with age-related comorbidities and may have complications associated with increasing immunosuppression. Here, we report 3 cases of renal allograft MGRS, and each case highlights different challenges in the diagnosis and management of this condition.