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Histological Analysis in ABO-Compatible and Incompatible Kidney Transplantation By Performing 3-Month and 1-Year Protocol Biopsies

K. Masutani,1 A. Tsuchimoto,1 Y. Matsukuma,1 K. Kurihara,2 Y. Okabe,2 H. Kitada,2 M. Tanaka,2 T. Kitazono,1 K. Tsuruya.1

1Department of Medicine and Clinical Science, Kyushu University, Fukuoka, Japan
2Department of Surgery and Oncology, Kyushu University, Fukuoka, Japan.

Meeting: 2015 American Transplant Congress

Abstract number: D159

Keywords: Biopsy, Kidney transplantation, Polyma virus, Rejection

Session Information

Date: Tuesday, May 5, 2015

Session Name: Poster Session D: Kidney: Acute Rejection

Session Time: 5:30pm-6:30pm

 Presentation Time: 5:30pm-6:30pm

Location: Exhibit Hall E

Related Abstracts
  • Protocol Biopsies in ABO-Incompatible Versus ABO-Compatible Living Donor Kidney Transplant Recipients
  • Differences between Live and Deceased-Donor Kidney Transplantation in a Centre Performing Protocol Biopsies

Background. ABO incompatible kidney transplantation (ABO-I KTx) is nowadays a well-established procedure to expand living donor source. Graft and patient survivals of ABO-I KTx were demonstrated to be similar to those in ABO-compatible (ABO-C) KTx. However, detailed histological findings with protocol biopsy (PB) have not been demonstrated.

Methods. We reviewed 401 living donor KTx including 276 ABO-C and 125 ABO-I KTx performed in Kyushu University Hospital from July 2008 through November 2013. During this period, PB policy was uniform, and it was performed at 3-month and 1-year. We compared detailed PB findings, and the incidence of biopsy proven acute rejection (BPAR) and polyomavirus BK nephropathy (BKVN) using both protocol and indication biopsies between ABO-C and ABO-I KTx.

Results. The 3-month and 1-year PB were performed in 86.2% and 78.6% of the studied patients. The incidence of subclinical acute rejection defined as Banff grade Ia or higher and/or antibody-mediated rejection were found in 8.6% in ABO-C group and 7.1% in ABO-I group at 3-month (p=0.68), and 12.1% and 10.9% at 1-year (p=0.85). Cumulative incidence of BPAR were 23.0% and 17.6%, respectively (p=0.24). The degree of glomerulitis, peritubular capillaritis, interstitial fibrosis/tubular atrophy were not also different between two groups. BKVN was found in 7 patients in ABO-C group and 4 in ABO-I group (p=0.75).

Conclusions. The histological analysis with fixed PB policy at 3-month and 1-year suggested comparable allograft pathology between ABO-C and ABO-I KTx.

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To cite this abstract in AMA style:

Masutani K, Tsuchimoto A, Matsukuma Y, Kurihara K, Okabe Y, Kitada H, Tanaka M, Kitazono T, Tsuruya K. Histological Analysis in ABO-Compatible and Incompatible Kidney Transplantation By Performing 3-Month and 1-Year Protocol Biopsies [abstract]. Am J Transplant. 2015; 15 (suppl 3). https://atcmeetingabstracts.com/abstract/histological-analysis-in-abo-compatible-and-incompatible-kidney-transplantation-by-performing-3-month-and-1-year-protocol-biopsies/. Accessed March 1, 2021.

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