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Nephrology & Renal Medicine

Chronic Active Antibody-Mediated Rejection (cAMR)

ICD-10 Code
T86.12

Indolent but progressive humoral rejection caused by donor-specific antibodies (DSA). Characterized pathologically by transplant glomerulopathy (double contours of the GBM), peritubular capillary basement membrane multilayering, and interstitial fibrosis.

Clinical Presentation & Protocol

Patient Usually Complains Of

Patient presents for follow-up of renal transplant dysfunction characterized by a progressive rise in serum creatinine and new-onset proteinuria. History significant for presence of donor-specific antibodies (DSA). No acute infectious symptoms reported. Current immunosuppression regimen reviewed for adherence.

Clinical Examination Findings

Patient is hemodynamically stable, afebrile. Physical exam reveals mild peripheral edema (1+). Transplant kidney site is non-tender, no palpable masses or bruits. No signs of systemic fluid overload or uremic manifestations.

Treatment Protocol

Management plan includes optimization of immunosuppression (calcineurin inhibitor trough levels, mycophenolate dosing). Consideration for IVIG, plasmapheresis, or rituximab based on DSA titer and biopsy severity. Strict blood pressure control with ACE inhibitors/ARBs for antiproteinuric effect.

Detailed clinical guide coming soon.