Volume 17, Issue 6 pp. 848-858
Original Report

Onset and progression of de novo donor-specific anti-human leukocyte antigen antibodies after BK polyomavirus and preemptive immunosuppression reduction

G. Dieplinger

G. Dieplinger

Terasaki Research Institute, Los Angeles, California, USA

These authors are co-first authors.Search for more papers by this author
M.J. Everly

Corresponding Author

M.J. Everly

Terasaki Research Institute, Los Angeles, California, USA

These authors are co-first authors.

Correspondence to:

Dr. Matthew J. Everly, Terasaki Research Institute, 11570 W. Olympic Blvd., Los Angeles, CA 90064, USA

Tel: 310-479-6101

Fax: 310-445-3381

E-mail: [email protected]

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K.P. Briley

K.P. Briley

Department of Pathology, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA

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C.E. Haisch

C.E. Haisch

Department of Surgery, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA

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P. Bolin

P. Bolin

Department of Medicine, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA

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A.Q. Maldonado

A.Q. Maldonado

Vidant Medical Center, Greenville, North Carolina, USA

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W.T. Kendrick

W.T. Kendrick

Eastern Nephrology Associates, Greenville, North Carolina, USA

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S.A. Kendrick

S.A. Kendrick

Eastern Nephrology Associates, Greenville, North Carolina, USA

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C. Morgan

C. Morgan

Department of Surgery, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA

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P.I. Terasaki

P.I. Terasaki

Terasaki Research Institute, Los Angeles, California, USA

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L.M. Rebellato

L.M. Rebellato

Department of Pathology, Brody School of Medicine at East Carolina University, Greenville, North Carolina, USA

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First published: 07 October 2015
Citations: 34

Abstract

Background

BK polyomavirus (BKPyV) viremia/nephropathy and reduction in immunosuppression following viremia may increase the risk of alloimmune activation and allograft rejection. This study investigates the impact of BKPyV viremia on de novo donor anti-human leukocyte antigen (HLA)-specific antibodies (dnDSA).

Patients and methods

All primary renal transplants at East Carolina University from March 1999 to December 2010, with at least 1 post-transplant BKPyV viral load testing, were analyzed. Patients were negative for anti-HLA antibodies to donor antigens (tested via single antigen beads) at transplantation and at first BKPyV testing.

Results

Nineteen of 174 patients (11%) tested positive for BKPyV viremia. Within 24 months of BKPyV viremia detection, 79% of BKPyV-viremic patients developed dnDSA. Only 20% of BKPyV viremia-persistent cases, compared to 86% of BKPyV viremia-resolved cases, developed dnDSA (P = 0.03). Poor allograft survival was evident in BKPyV viremia-persistent patients (60% failure by 2 years post BKPyV diagnosis) and in BKPyV viremia-resolved patients with dnDSA (5-year post BKPyV diagnosis allograft survival of 48%).

Conclusions

Post-transplant BKPyV viremia and preemptive immunosuppression reduction is associated with high rates of dnDSA. When preemptively treating BKPyV viremia, dnDSA should be monitored to prevent allograft consequences.

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