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Punukollu R, Ryan M, Misra S, Budhiraja P, Ohara S, Kumm K, Guerra G, Reddy KS, Heilman R, Jadlowiec CC. Past, Current, and Future Perspectives on Transplanting Acute Kidney Injury Kidneys. Clin Pract 2023; 13:944-958. [PMID: 37623267 PMCID: PMC10453697 DOI: 10.3390/clinpract13040086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
(1) Background: Acute kidney injury (AKI) kidneys have high non-utilization rates due to concerns regarding unfavorable outcomes. In this paper, we aimed to review the past, present, and future opinions on AKI kidneys. (2) Methods: A PubMed search was conducted for topics relevant to AKI kidney transplantation. (3) Results: Current short- and long-term data on AKI kidneys have demonstrated good outcomes including favorable graft function and survival. The role of procurement biopsies is controversial, but they have been shown to be beneficial in AKI kidneys by allowing clinicians to differentiate between reversible tubular injury and irreversible cortical necrosis. Machine perfusion has also been applied to AKI kidneys and has been shown to reduce delayed graft function (DGF). The incidence of DGF increases with AKI severity and its management can be challenging. Strategies employed to counteract this have included early initiation of dialysis after kidney transplantation, early targeting of adequate immunosuppression levels to minimize rejection risk, and establishment of outpatient dialysis. (4) Conclusions: Despite good outcomes, there continue to be barriers that impact AKI kidney utilization. Successful strategies have included use of procurement biopsies or machine perfusion and expectant management of DGF. With increasing experience, better use of AKI kidneys can result in additional opportunities to expand the donor pool.
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Affiliation(s)
- Rachana Punukollu
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Margaret Ryan
- Division of Anatomic Pathology, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Suman Misra
- Division of Nephrology, Mayo Clinic, Phoenix, AZ 85054, USA
| | | | - Stephanie Ohara
- Division of Surgery, Valleywise Health Medical Center, Creighton University, Phoenix, AZ 85008, USA
| | - Kayla Kumm
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Giselle Guerra
- Division of Nephrology, Miami Transplant Institute, Miami, FL 33136, USA
| | - Kunam S. Reddy
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
| | | | - Caroline C. Jadlowiec
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
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Husain SA, King KL, Cron DC, Lentine KL, Adler JT, Mohan S. Influence of organ quality on the observed association between deceased donor kidney procurement biopsy findings and graft survival. Am J Transplant 2022; 22:2842-2854. [PMID: 35946600 DOI: 10.1111/ajt.17167] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 07/17/2022] [Accepted: 08/05/2022] [Indexed: 01/25/2023]
Abstract
Deceased donor kidney procurement biopsies findings are the most common reason for kidney discard. Retrospective studies have found inconsistent associations with post-transplant outcomes but may have been limited by selection bias because kidneys with advanced nephrosclerosis from high-risk donors are typically discarded. We conducted a retrospective cohort study of kidneys transplanted in the United States from 2015 to 2019 with complete biopsy data available, defining "suboptimal histology" as glomerulosclerosis ≥11%, IFTA ≥mild, and/or vascular disease ≥mild. We used time-to-event analyses to determine the association between suboptimal histology and death-censored graft failure after stratification by kidney donor profile index (KDPI) (≤35%, 36%-84%, ≥85%) and final creatinine (<1 mg/dl, 1-2 mg/dl, >2 mg/dl). Among 30 469 kidneys included, 36% had suboptimal histology. In adjusted analyses, suboptimal histology was associated with death-censored graft failure among kidneys with KDPI 36-84% (HR 1.22, 95% CI 1.09-1.36), but not KDPI≤35% (HR 1.24, 0.94-1.64) or ≥ 85% (HR 0.99, 0.81-1.22). Similarly, suboptimal histology was associated with death-censored graft failure among kidneys from donors with creatinine 1-2 mg/dl (HR 1.39, 95% CI 1.20-1.60) but not <1 mg/dl (HR 1.07, 0.93-1.23) or >2 mg/dl (HR 0.95, 0.75-1.20). The association of procurement histology with graft longevity among intermediate-quality kidneys that were likely to be both biopsied and transplanted suggests biopsies provide independent organ quality assessments.
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Affiliation(s)
- S Ali Husain
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians & Surgeons, New York, New York, USA
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
| | - Kristen L King
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians & Surgeons, New York, New York, USA
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
| | - David C Cron
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA
- Center for Surgery and Public Health, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Krista L Lentine
- Department of Surgery, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Joel T Adler
- Department of Surgery and Perioperative Care, Dell Medical School at the University of Texas at Austin, Austin, Texas, USA
| | - Sumit Mohan
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians & Surgeons, New York, New York, USA
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
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Wang J, Liu J, Wu W, Yang S, Liu L, Fu Q, Li J, Chen X, Deng R, Wu C, Long S, Zhang W, Zhang H, Mao H, Chen W. Combining Clinical Parameters and Acute Tubular Injury Grading Is Superior in Predicting the Prognosis of Deceased-Donor Kidney Transplantation: A 7-Year Observational Study. Front Immunol 2022; 13:912749. [PMID: 35844570 PMCID: PMC9279653 DOI: 10.3389/fimmu.2022.912749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundWe developed a pragmatic dichotomous grading criterion to stratify the acute tubular injury (ATI) of deceased-donor kidneys. We intended to verify the predictive value of this criterion for the prognosis of deceased-donor kidney transplantation.MethodsThe allografts with ATI were classified into severe and mild groups. Severe ATI was defined as the presence of extreme and diffuse flattening of the tubular epithelial cells, or denudement of the tubular basement membrane. The clinical delayed graft function (DGF) risk index was calculated based on a regression model for posttransplant DGF using 17 clinical parameters related to donor–recipient characteristics.ResultsA total of 140 recipients were enrolled: 18 severe and 122 mild ATI. Compared with the mild ATI group, the severe ATI group had more donors after cardiac death, higher median donor terminal serum creatinine level (dScr), and longer median cold ischemia time. Severe ATI had a higher DGF rate (55.6% vs 14.6%, p < 0.001), longer DGF recovery time (49.6 vs 26.3 days, p < 0.001), and a lower estimated glomerular filtration rate (eGFR) at 1 month (23.5 vs 54.0 ml/min/1.73 m2, p < 0.001), 3 months (40.4 vs 59.0, p = 0.001), and 6 months after transplant (46.8 vs 60.3, p = 0.033). However, there was no significant difference in eGFR at 1 year or beyond, graft, and patient survival. The predictive value of combined dScr with ATI severity for DGF rate and DGF recovery time was superior to that of dScr alone. The predictive value of the combined DGF risk index with ATI severity for DGF was also better than that of the DGF risk index alone; however, the association of the DGF risk index with DGF recovery time was not identified. Chronic lesions including glomerulosclerosis, interstitial fibrosis, arterial intimal fibrosis, and arteriolar hyalinosis were associated with declined posttransplant 1-year eGFR.ConclusionBased on our pragmatic dichotomous grading criterion for ATI in a preimplantation biopsy, donor kidneys with severe ATI increased DGF risk, prolonged DGF recovery, and decreased short-term graft function but demonstrated favorable long-term graft function. Our grading method can offer additive valuable information for assessing donor kidneys with acute kidney injury and may act as an effective supplementary index of the Banff criteria.
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Affiliation(s)
- Jiali Wang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
| | - Jinqi Liu
- Department of Pediatrics, Guangzhou Women and Children’s Medical Centre, Guangzhou, China
| | - Wenrui Wu
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shicong Yang
- Department of Pathology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Longshan Liu
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory on Organ Donation and Transplant Immunology, Guangzhou, Guangzhou, China
- Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), Guangzhou, China
| | - Qian Fu
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jun Li
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xutao Chen
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ronghai Deng
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chenglin Wu
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Sizhe Long
- Center for Information Technology and Statistics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wujun Zhang
- Center for Information Technology and Statistics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huanxi Zhang
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Wenfang Chen, ; Haiping Mao, ; Huanxi Zhang,
| | - Haiping Mao
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Yuexiu District, Guangzhou, China
- *Correspondence: Wenfang Chen, ; Haiping Mao, ; Huanxi Zhang,
| | - Wenfang Chen
- Department of Pathology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Wenfang Chen, ; Haiping Mao, ; Huanxi Zhang,
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Stewart DE, Foutz J, Kamal L, Weiss S, McGehee HS, Cooper M, Gupta G. The Independent Effects of Procurement Biopsy Findings on Ten-Year Outcomes of Extended Criteria Donor Kidney Transplants. Kidney Int Rep 2022; 7:1850-1865. [PMID: 35967103 PMCID: PMC9366372 DOI: 10.1016/j.ekir.2022.05.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/23/2022] [Indexed: 11/01/2022] Open
Abstract
Introduction Methods Results Conclusion
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Zagni M, Croci GA, Cannavò A, Passamonti SM, De Feo T, Boggio FL, Cribiù FM, Maggioni M, Ferrero S, Gobbo AD, Gianelli U. Histological evaluation of ischaemic alterations in donors after cardiac death: A useful tool to predict post‐transplant renal function. Clin Transplant 2022; 36:e14622. [DOI: 10.1111/ctr.14622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Moreno Zagni
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Giorgio Alberto Croci
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
- Department of Pathophysiology and Transplantation University of Milan Medical School Fondazione IRCCS Ca' Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Antonino Cannavò
- North Italy Transplant program (NITp) UOC Coordinamento Trapianti Fondazione IRCCS Ca' Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Serena Maria Passamonti
- North Italy Transplant program (NITp) UOC Coordinamento Trapianti Fondazione IRCCS Ca' Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Tullia De Feo
- North Italy Transplant program (NITp) UOC Coordinamento Trapianti Fondazione IRCCS Ca' Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Francesca Laura Boggio
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Fulvia Milena Cribiù
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Marco Maggioni
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Stefano Ferrero
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
- Department of Biomedical Surgical and Dental Sciences University of Milan Milan Italy
| | - Alessandro Del Gobbo
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
| | - Umberto Gianelli
- Division of Pathology Fondazione IRCCS Ca’ Granda ‐ Ospedale Maggiore Policlinico Milan Italy
- Department of Pathophysiology and Transplantation University of Milan Medical School Fondazione IRCCS Ca' Granda ‐ Ospedale Maggiore Policlinico Milan Italy
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Emmons BR, Husain SA, King KL, Adler JT, Mohan S. Variations in deceased donor kidney procurement biopsy practice patterns: A survey of U.S. organ procurement organizations. Clin Transplant 2021; 35:e14411. [PMID: 34196034 PMCID: PMC8556234 DOI: 10.1111/ctr.14411] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Procurement biopsies have become a common practice in the evaluation and allocation of deceased donor kidneys in the United States despite questions about their value and reproducibility. We sought to determine the extent of OPO-level differences in criteria used to decide which deceased donor kidneys undergo a procurement biopsy and to assess the degree of variability in procurement biopsy technique and interpretation across OPOs. METHODS Each of the country's 58 OPOs were invited to participate in the survey. OPOs were divided into two groups based on organ availability ratio and deceased donor kidney discard rate. RESULTS AND CONCLUSIONS Fifty-out-of-fifty-eight invited OPOs (86% response rate) responded to the survey between November 2020 and December 2020. Thirty (60%) OPOs reported that they have formal criteria for performing kidney procurement biopsy, but for 29 of these OPOs, transplant centers can request biopsy on kidneys that do not meet criteria. OPOs used a total of seven different variables and 12 different numerical thresholds to define impaired kidney function that would prompt a procurement biopsy. Additionally, wide variability was seen in biopsy technique and procedures for biopsy interpretation and reporting of findings to transplant programs. These findings identify a clear opportunity for standardization of procurement biopsies to best practices.
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Affiliation(s)
- Brendan R. Emmons
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, NY
| | - S. Ali Husain
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, NY
- The Columbia University Renal Epidemiology (CURE) Group, New York, NY
| | - Kristen L. King
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, NY
- The Columbia University Renal Epidemiology (CURE) Group, New York, NY
| | - Joel T. Adler
- Department of Surgery, Division of Transplant Surgery, Brigham and Women’s Hospital, Boston, MA
- Center for Surgery and Public Health at Brigham and Women’s Hospital, Boston, MA
| | - Sumit Mohan
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, NY
- The Columbia University Renal Epidemiology (CURE) Group, New York, NY
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY
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Impact of the Mayo Adhesive Probability Score on Donor and Recipient Outcomes After Living-donor Kidney Transplantation: A Retrospective, Single-center Study of 782 Transplants. Transplant Direct 2021; 7:e728. [PMID: 34291150 PMCID: PMC8288887 DOI: 10.1097/txd.0000000000001185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/08/2021] [Accepted: 05/11/2021] [Indexed: 11/25/2022] Open
Abstract
Supplemental Digital Content is available in the text. Background. This study was performed to assess the impact of the Mayo Adhesive Probability (MAP) score on donor and recipient outcomes after living-donor kidney transplantation (LDKT). Methods. We retrospectively analyzed 782 transplants involving LDKT between February 2008 and October 2019 to assess the correlation between the MAP score and outcome after LDKT. We divided the transplants into 2 groups according to the donor MAP score: 0 (MAP0) and 1–5 (MAP1–5). Results. Compared with the MAP0 group, donors in the MAP1–5 group were significantly older, had higher body mass index, and were more likely to be men. The prevalences of hypertension, hyperlipidemia, and diabetes were also higher among donors in the MAP1–5 group than among donors in the MAP0 group. Operative time, estimated blood loss during donor nephrectomy, and percentage of glomerular sclerosis were significantly greater in the MAP1–5 group than in the MAP0 group. Donor and recipient perioperative complications were comparable between the 2 groups; death-censored graft survival rates also did not significantly differ between groups. Although the recipient mean estimated glomerular filtration rate (eGFR) from postoperative d 1 to 7 was significantly higher in the MAP0 group than in the MAP1–5 group (P = 0.007), eGFR reductions within 5 y after transplantation were similar between groups. There were no significant differences between groups in recipient mortality and biopsy-proven acute rejection episodes within 1 y after transplantation. Additionally, multivariate analysis showed that the only factors affecting recipient eGFR at postoperative d 7 were donor age, recipient age, and female sex (P < 0.001, <0.001, and =0.004, respectively). Conclusions. The MAP score did not influence surgical complications or graft survival; therefore, it should not affect donor selection.
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Reese PP, Aubert O, Naesens M, Huang E, Potluri V, Kuypers D, Bouquegneau A, Divard G, Raynaud M, Bouatou Y, Vo A, Glotz D, Legendre C, Lefaucheur C, Jordan S, Empana JP, Jouven X, Loupy A. Assessment of the Utility of Kidney Histology as a Basis for Discarding Organs in the United States: A Comparison of International Transplant Practices and Outcomes. J Am Soc Nephrol 2021; 32:397-409. [PMID: 33323474 PMCID: PMC8054891 DOI: 10.1681/asn.2020040464] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 09/28/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Many kidneys donated for transplant in the United States are discarded because of abnormal histology. Whether histology adds incremental value beyond usual donor attributes in assessing allograft quality is unknown. METHODS This population-based study included patients who received a deceased donor kidney that had been biopsied before implantation according to a prespecified protocol in France and Belgium, where preimplantation biopsy findings are generally not used for decision making in the allocation process. We also studied kidneys that had been acquired from deceased United States donors for transplantation that were biopsied during allocation and discarded because of low organ quality. Using donor and recipient characteristics, we fit multivariable Cox models for death-censored graft failure and examined whether predictive accuracy (C index) improved after adding donor histology. We matched the discarded United States kidneys to similar kidneys transplanted in Europe and calculated predicted allograft survival. RESULTS In the development cohort of 1629 kidney recipients at two French centers, adding donor histology to the model did not significantly improve prediction of long-term allograft failure. Analyses using an external validation cohort from two Belgian centers confirmed the lack of improved accuracy from adding histology. About 45% of 1103 United States kidneys discarded because of histologic findings could be accurately matched to very similar kidneys that had been transplanted in France; these discarded kidneys would be expected to have allograft survival of 93.1% at 1 year, 80.7% at 5 years, and 68.9% at 10 years. CONCLUSIONS In this multicenter study, donor kidney histology assessment during allocation did not provide substantial incremental value in ascertaining organ quality. Many kidneys discarded on the basis of biopsy findings would likely benefit United States patients who are wait listed.
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Affiliation(s)
- Peter P. Reese
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France,Renal-Electrolyte and Hypertension Division, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania,Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Olivier Aubert
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France,Department of Kidney Transplantation, Necker Hospital, Assistance Publique—Hôpitaux de Paris, Paris, France
| | - Maarten Naesens
- Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium
| | - Edmund Huang
- Division of Nephrology, Department of Medicine, Comprehensive Transplant Center, Cedars Sinai Medical Center, West Hollywood, California
| | - Vishnu Potluri
- Renal-Electrolyte and Hypertension Division, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania,Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Dirk Kuypers
- Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium
| | - Antoine Bouquegneau
- Department of Nephrology, Dialysis and Transplantation, Centre Hospitalier Universitaire de Liege, Liege, Belgium
| | - Gillian Divard
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France
| | - Marc Raynaud
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France
| | - Yassine Bouatou
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France
| | - Ashley Vo
- Division of Nephrology, Department of Medicine, Comprehensive Transplant Center, Cedars Sinai Medical Center, West Hollywood, California
| | - Denis Glotz
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France,Department of Nephrology and Kidney Transplantation, Saint-Louis Hospital, Assistance Publique—Hôpitaux de Paris, Paris, France
| | - Christophe Legendre
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France,Department of Kidney Transplantation, Necker Hospital, Assistance Publique—Hôpitaux de Paris, Paris, France
| | - Carmen Lefaucheur
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France,Department of Nephrology and Kidney Transplantation, Saint-Louis Hospital, Assistance Publique—Hôpitaux de Paris, Paris, France
| | - Stanley Jordan
- Division of Nephrology, Department of Medicine, Comprehensive Transplant Center, Cedars Sinai Medical Center, West Hollywood, California
| | - Jean-Philippe Empana
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France
| | - Xavier Jouven
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France,Cardiology and Heart Transplant Department, Pompidou Hospital, Assistance Publique—Hôpitaux de Paris, Paris, France
| | - Alexandre Loupy
- Université de Paris, Institut National de la Santé et de la Recherche Médicale U970, Paris Translational Research Centre for Organ Transplantation, Paris, France,Department of Kidney Transplantation, Necker Hospital, Assistance Publique—Hôpitaux de Paris, Paris, France
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9
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Husain SA, Shah V, Alvarado Verduzco H, King KL, Brennan C, Batal I, Coley SM, Hall IE, Stokes MB, Dube GK, Crew RJ, Perotte A, Natarajan K, Carpenter D, Sandoval PR, Santoriello D, D’Agati V, Cohen DJ, Ratner L, Markowitz G, Mohan S. Impact of Deceased Donor Kidney Procurement Biopsy Technique on Histologic Accuracy. Kidney Int Rep 2020; 5:1906-1913. [PMID: 33163711 PMCID: PMC7609887 DOI: 10.1016/j.ekir.2020.08.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/27/2020] [Accepted: 08/04/2020] [Indexed: 11/26/2022] Open
Abstract
Introduction The factors that influence deceased donor kidney procurement biopsy reliability are not well established. We examined the impact of biopsy technique and pathologist training on procurement biopsy accuracy. Methods We retrospectively identified all deceased donor kidney-only transplants at our center from 2006 to 2016 with both procurement and reperfusion biopsies performed and information available on procurement biopsy technique and pathologist (n = 392). Biopsies were scored using a previously validated system, classifying “suboptimal” histology as the presence of at least 1 of the following: glomerulosclerosis ≥11%, moderate/severe interstitial fibrosis/tubular atrophy, or moderate/severe vascular disease. We calculated relative risk ratios (RRR) to determine the influence of technique (core vs. wedge) and pathologist (renal vs. nonrenal) on concordance between procurement and reperfusion biopsy histologic classification. Results A total of 171 (44%) procurement biopsies used wedge technique, and 221 (56%) used core technique. Results of only 36 biopsies (9%) were interpreted by renal pathologists. Correlation between procurement and reperfusion glomerulosclerosis was poor for both wedge (r2 = 0.11) and core (r2 = 0.14) biopsies. Overall, 34% of kidneys had discordant classification on procurement versus reperfusion biopsy. Neither biopsy technique nor pathologist training was associated with concordance between procurement and reperfusion histology, but a larger number of sampled glomeruli was associated with a higher likelihood of concordance (adjusted RRR = 1.12 per 10 glomeruli, 95% confidence interval = 1.04−1.22). Conclusions Biopsy technique and pathologist training were not associated with procurement biopsy histologic accuracy in this retrospective study. Prospective trials are needed to determine how to optimize procurement biopsy practices.
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Affiliation(s)
- S. Ali Husain
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
- Correspondence: S. Ali Husain, Division of Nephrology, Department of Medicine, 622 West 168th Street PH4-124, New York, New York 10032, USA.
| | - Vaqar Shah
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Hector Alvarado Verduzco
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Kristen L. King
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
| | - Corey Brennan
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
| | - Ibrahim Batal
- Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Shana M. Coley
- Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Isaac E. Hall
- Department of Medicine, Division of Nephrology and Hypertension, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - M. Barry Stokes
- Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Geoffrey K. Dube
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - R. John Crew
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Adler Perotte
- Department of Biomedical Informatics, Columbia University, New York, New York, USA
| | - Karthik Natarajan
- Department of Biomedical Informatics, Columbia University, New York, New York, USA
| | - Dustin Carpenter
- Department of Surgery, Columbia University College of Physicians & Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - P. Rodrigo Sandoval
- Department of Surgery, Columbia University College of Physicians & Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Dominick Santoriello
- Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Vivette D’Agati
- Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - David J. Cohen
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Lloyd Ratner
- Department of Surgery, Columbia University College of Physicians & Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Glen Markowitz
- Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
| | - Sumit Mohan
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York, USA
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
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10
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Kim SM, Han A, Ahn S, Min SI, Min SK, Ha J. Klotho as a potential predictor of deceased donor kidney transplantation outcomes. Ann Surg Treat Res 2020; 98:332-339. [PMID: 32528913 PMCID: PMC7263887 DOI: 10.4174/astr.2020.98.6.332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/19/2020] [Accepted: 04/28/2020] [Indexed: 11/30/2022] Open
Abstract
Purpose Klotho is an antiaging factor mainly produced by renal tubular cells. Klotho is reportedly decreased in an animal model of acute kidney injury and patients with chronic kidney disease. However, information on Klotho expression after kidney transplantation is limited. We analyzed the correlation between donor Klotho expression and clinical outcomes of kidney transplantation. Methods Sixty patients who underwent deceased donor kidney transplantation between March 2015 and October 2017 were enrolled. Serum and tissue Klotho expression levels were measured by enzyme-linked immunosorbent assay and immunohistochemistry, respectively. Graft function was assessed by estimated glomerular filtration rate (eGFR). Results Patients were divided into 2 groups according to donor Klotho expression in renal tissues. A greater improvement in eGFR was observed at 1 week after transplantation in patients receiving kidneys with higher Klotho expression (47.5 ± 21.9 mL/min/1.73 m2vs. 63.9 ± 28.2 mL/min/1.73 m2, P = 0.030). Patients were also classified into 2 groups according to donor serum Klotho level. There was a tendency for a higher eGFR at 12 months after transplantation in patients receiving kidneys from donors with a higher Klotho level (51.0 ± 18.0 mL/min/1.73 m2vs. 61.2 ± 16.5 mL/min/1.73 m2, P = 0.059). When subgrouped into patients with or without biopsy-proven acute rejection, 12-month eGFR remained higher in patients receiving kidneys from donors with higher serum Klotho. Conclusion Our data demonstrated that donor tissue expression of Klotho correlated with early recovery of eGFR after kidney transplantation. Donor serum Klotho level tended to be associated with posttransplant 12-month eGFR. Donor Klotho expression might be a new predictor for deceased donor kidney transplantation outcome.
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Affiliation(s)
- Suh Min Kim
- Department of Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Ahram Han
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sanghyun Ahn
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sang-Il Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seung-Kee Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jongwon Ha
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.,Transplantation Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
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11
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Husain SA, King KL, Batal I, Dube GK, Hall IE, Brennan C, Stokes MB, Crew RJ, Carpenter D, Alvarado Verduzco H, Rosen R, Coley S, Campenot E, Santoriello D, Perotte A, Natarajan K, D'Agati VD, Cohen DJ, Ratner LE, Markowitz G, Mohan S. Reproducibility of Deceased Donor Kidney Procurement Biopsies. Clin J Am Soc Nephrol 2020; 15:257-264. [PMID: 31974289 PMCID: PMC7015101 DOI: 10.2215/cjn.09170819] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/05/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND AND OBJECTIVES Unfavorable histology on procurement biopsies is the most common reason for deceased donor kidney discard. We sought to assess the reproducibility of procurement biopsy findings. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We compiled a continuous cohort of deceased donor kidneys transplanted at our institution from 1/1/2006 to 12/31/2016 that had at least one procurement biopsy performed, and excluded cases with missing biopsy reports and those used in multiorgan transplants. Suboptimal histology was defined as the presence of advanced sclerosis in greater than or equal to one biopsy compartment (glomeruli, tubules/interstitium, vessels). We calculated κ coefficients to assess agreement in optimal versus suboptimal classification between sequential biopsy reports for kidneys that underwent multiple procurement biopsies and used time-to-event analysis to evaluate the association between first versus second biopsies and patient and allograft survival. RESULTS Of the 1011 kidneys included in our cohort, 606 (60%) had multiple procurement biopsies; 98% had first biopsy performed at another organ procurement organization and their second biopsy performed locally. Categorical agreement was highest for vascular disease (κ=0.17) followed by interstitial fibrosis and tubular atrophy (κ=0.12) and glomerulosclerosis (κ=0.12). Overall histologic agreement (optimal versus suboptimal) was κ=0.15. First biopsy histology had no association with allograft survival in unadjusted or adjusted analyses. However, second biopsy optimal histology was associated with a higher probability of death-censored allograft survival, even after adjusting for donor and recipient factors (adjusted hazard ratio, 0.50; 95% confidence interval, 0.34 to 0.75; P=0.001). CONCLUSIONS Deceased donor kidneys that underwent multiple procurement biopsies often displayed substantial differences in histologic categorization in sequential biopsies, and there was no association between first biopsy findings and post-transplant outcomes.
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Affiliation(s)
- S Ali Husain
- Division of Nephrology, Department of Medicine and .,The Columbia University Renal Epidemiology Group, New York, New York
| | - Kristen L King
- Division of Nephrology, Department of Medicine and.,The Columbia University Renal Epidemiology Group, New York, New York
| | | | | | - Isaac E Hall
- Division of Nephrology and Hypertension, Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Corey Brennan
- The Columbia University Renal Epidemiology Group, New York, New York.,Kidney and Pancreas Transplant Program, New York Presbyterian Hospital, New York, New York
| | | | - R John Crew
- Division of Nephrology, Department of Medicine and
| | - Dustin Carpenter
- Surgery, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York
| | | | | | | | | | | | - Adler Perotte
- Department of Biomedical Informatics, Columbia University, New York, New York; and
| | - Karthik Natarajan
- Department of Biomedical Informatics, Columbia University, New York, New York; and
| | | | | | - Lloyd E Ratner
- Surgery, Columbia University College of Physicians and Surgeons and New York Presbyterian Hospital, New York, New York
| | | | - Sumit Mohan
- Division of Nephrology, Department of Medicine and.,The Columbia University Renal Epidemiology Group, New York, New York.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
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12
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Favi E, James A, Puliatti C, Whatling P, Ferraresso M, Rui C, Cacciola R. Utility and safety of early allograft biopsy in adult deceased donor kidney transplant recipients. Clin Exp Nephrol 2019; 24:356-368. [PMID: 31768863 DOI: 10.1007/s10157-019-01821-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 11/12/2019] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Delayed graft function (DGF) is considered a risk factor for rejection after kidney transplantation (KTx). Clinical guidelines recommend weekly allograft biopsy until DGF resolves. However, who may benefit the most from such an aggressive policy and when histology should be evaluated remain debated. METHODS We analyzed 223 biopsies in 145 deceased donor KTx treated with basiliximab or anti-thymocyte globulin (rATG) and calcineurin inhibitor-based maintenance. The aim of the study was to assess the utility and safety of biopsies performed within 28 days of transplant. Relationships between transplant characteristics, indication, timing, and biopsy-related outcomes were evaluated. RESULTS Main indication for biopsy was DGF (87.8%) followed by lack of improvement in graft function (9.2%), and worsening graft function (3.1%). Acute tubular necrosis was the leading diagnosis (89.8%) whereas rejection was detected in 8.2% specimens. Rejection was more frequent in patients biopsied due to worsening graft function or lack of improvement in graft function than DGF (66.7% vs. 3.5%; P = 0.0075 and 33.3% vs. 3.5%; P = 0.0104, respectively) and in biopsies performed between day 15 and 28 than from day 0 to 14 (31.2% vs. 3.7%; P = 0.0002). Complication rate was 4.1%. Management was affected by the information gained with histology in 12.2% cases (7% considering DGF). CONCLUSIONS In low-immunological risk recipients treated with induction and calcineurin inhibitors maintenance, protocol biopsies obtained within 2 weeks of surgery to rule out rejection during DGF do not necessarily offer a favourable balance between risks and benefits. In these patients, a tailored approach may minimize complications thus optimizing results.
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Affiliation(s)
- Evaldo Favi
- Renal Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Francesco Sforza n. 35, 20122, Milan, Italy.
| | - Ajith James
- Nephrology, Royal London Hospital, Barts Health NHS Trust, Whitechapel Rd, London, E1 1BB, UK
| | - Carmelo Puliatti
- Organ Transplantation, Parma University Hospital, Via A. Gramsci 14, 43126, Parma, Italy
| | - Phil Whatling
- Nephrology, Royal London Hospital, Barts Health NHS Trust, Whitechapel Rd, London, E1 1BB, UK
| | - Mariano Ferraresso
- Renal Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Francesco Sforza n. 35, 20122, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Via Festa del Perdono 7, 20122, Milan, Italy
| | - Chiara Rui
- Renal Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Francesco Sforza n. 35, 20122, Milan, Italy
| | - Roberto Cacciola
- HPB and Transplant Unit, Department of Surgery, Tor Vergata University, Viale Oxford 81, 00133, Rome, Italy
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13
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Stallone G, Grandaliano G. To discard or not to discard: transplantation and the art of scoring. Clin Kidney J 2019; 12:564-568. [PMID: 31411597 PMCID: PMC6671422 DOI: 10.1093/ckj/sfz032] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Indexed: 01/06/2023] Open
Abstract
The growing gap between inadequate supply and constantly high demand for kidney transplantation observed in the last two decades led to exploring the possibility of using organs from older donors with an increasing number of comorbidities. The main issue in this scenario is to identify transplantable organs and to allocate them to the most suitable recipients. A great number of clinical investigations proposed several acceptance/allocation criteria to reduce the discard rate of these kidneys and to improve their outcome, including histological features at the time of transplant. Despite the widespread use of several histological scoring systems, there is no consensus on their value in predicting allograft survival and there is established evidence that histological analysis is the most common reason to discard expanded criteria donor kidneys. To overcome this issue, a clinical scoring system, the Kidney Donor Profile Index (KDPI), was developed on the basis of easily accessible donor features. The KDPI score, adopted in the new US allocation procedure, has good reproducibility but presents several limitations, as suggested also in this issue of Clinical Kidney Journal. This observation should stimulate the search for novel scores combining clinical, histological and molecular features in an attempt to improve the decision process.
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Affiliation(s)
- Giovanni Stallone
- Department of Medical and Surgical Sciences, Nephrology, Dialysis and Transplantation Unit, University of Foggia, Foggia, Italy
| | - Giuseppe Grandaliano
- Department of Medical and Surgical Sciences, Nephrology, Dialysis and Transplantation Unit, University of Foggia, Foggia, Italy
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14
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Hoyer KJR, Dittrich S, Bartram MP, Rinschen MM. Quantification of molecular heterogeneity in kidney tissue by targeted proteomics. J Proteomics 2019. [DOI: 10.1016/j.jprot.2018.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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15
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Carpenter D, Husain SA, Brennan C, Batal I, Hall IE, Santoriello D, Rosen R, Crew RJ, Campenot E, Dube GK, Radhakrishnan J, Stokes MB, Sandoval PR, D’Agati V, Cohen DJ, Ratner LE, Markowitz G, Mohan S. Procurement Biopsies in the Evaluation of Deceased Donor Kidneys. Clin J Am Soc Nephrol 2018; 13:1876-1885. [PMID: 30361336 PMCID: PMC6302333 DOI: 10.2215/cjn.04150418] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Accepted: 09/07/2018] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND OBJECTIVES Biopsies taken at deceased donor kidney procurement continue to be cited as a leading reason for discard; however, the reproducibility and prognostic capability of these biopsies are controversial. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We compiled a retrospective, single-institution, continuous cohort of deceased donor kidney transplants performed from 2006 to 2009. Procurement biopsy information-percentage of glomerulosclerosis, interstitial fibrosis/tubular atrophy, and vascular disease-was obtained from the national transplant database. Using univariable, multivariable, and time-to-event analyses for death-censored graft survival, we compared procurement frozen section biopsy reports with reperfusion paraffin-embedded biopsies read by trained kidney pathologists (n=270). We also examined agreement for sequential procurement biopsies performed on the same kidney (n=116 kidneys). RESULTS For kidneys on which more than one procurement biopsy was performed (n=116), category agreement was found in only 64% of cases (κ=0.14). For all kidneys (n=270), correlation between procurement and reperfusion biopsies was poor: overall, biopsies were classified into the same category (optimal versus suboptimal) in only 64% of cases (κ=0.25). This discrepancy was most pronounced when categorizing percentage of glomerulosclerosis, which had 63% agreement (κ=0.15). Interstitial fibrosis/tubular atrophy and vascular disease had agreement rates of 82% (κ=0.13) and 80% (κ=0.15), respectively. Ninety-eight (36%) recipients died, and 56 (21%) allografts failed by the end of follow-up. Reperfusion biopsies were more prognostic than procurement biopsies (hazard ratio for graft failure, 2.02; 95% confidence interval, 1.09 to 3.74 versus hazard ratio for graft failure, 1.30; 95% confidence interval, 0.61 to 2.76), with procurement biopsies not significantly associated with graft failure. CONCLUSIONS We found that procurement biopsies are poorly reproducible, do not correlate well with paraffin-embedded reperfusion biopsies, and are not significantly associated with transplant outcomes.
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Affiliation(s)
| | - S. Ali Husain
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
- The Columbia University Renal Epidemiology Group, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Corey Brennan
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York; and
| | | | - Isaac E. Hall
- Division of Nephrology and Hypertension, Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Dominick Santoriello
- Division of Nephrology and Hypertension, Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Raphael Rosen
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - R. John Crew
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | | | - Geoffrey K. Dube
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Jai Radhakrishnan
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | | | | | | | - David J. Cohen
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | | | | | - Sumit Mohan
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
- The Columbia University Renal Epidemiology Group, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York; and
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16
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Marsh JN, Matlock MK, Kudose S, Liu TC, Stappenbeck TS, Gaut JP, Swamidass SJ. Deep Learning Global Glomerulosclerosis in Transplant Kidney Frozen Sections. IEEE TRANSACTIONS ON MEDICAL IMAGING 2018; 37:2718-2728. [PMID: 29994669 PMCID: PMC6296264 DOI: 10.1109/tmi.2018.2851150] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Transplantable kidneys are in very limited supply. Accurate viability assessment prior to transplantation could minimize organ discard. Rapid and accurate evaluation of intra-operative donor kidney biopsies is essential for determining which kidneys are eligible for transplantation. The criterion for accepting or rejecting donor kidneys relies heavily on pathologist determination of the percent of glomeruli (determined from a frozen section) that are normal and sclerotic. This percentage is a critical measurement that correlates with transplant outcome. Inter- and intra-observer variability in donor biopsy evaluation is, however, significant. An automated method for determination of percent global glomerulosclerosis could prove useful in decreasing evaluation variability, increasing throughput, and easing the burden on pathologists. Here, we describe the development of a deep learning model that identifies and classifies non-sclerosed and sclerosed glomeruli in whole-slide images of donor kidney frozen section biopsies. This model extends a convolutional neural network (CNN) pre-trained on a large database of digital images. The extended model, when trained on just 48 whole slide images, exhibits slide-level evaluation performance on par with expert renal pathologists. Encouragingly, the model's performance is robust to slide preparation artifacts associated with frozen section preparation. The model substantially outperforms a model trained on image patches of isolated glomeruli, in terms of both accuracy and speed. The methodology overcomes the technical challenge of applying a pretrained CNN bottleneck model to whole-slide image classification. The traditional patch-based approach, while exhibiting deceptively good performance classifying isolated patches, does not translate successfully to whole-slide image segmentation in this setting. As the first model reported that identifies and classifies normal and sclerotic glomeruli in frozen kidney sections, and thus the first model reported in the literature relevant to kidney transplantation, it may become an essential part of donor kidney biopsy evaluation in the clinical setting.
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17
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Mohan S, Chiles MC, Patzer RE, Pastan SO, Husain SA, Carpenter DJ, Dube GK, Crew RJ, Ratner LE, Cohen DJ. Factors leading to the discard of deceased donor kidneys in the United States. Kidney Int 2018; 94:187-198. [PMID: 29735310 PMCID: PMC6015528 DOI: 10.1016/j.kint.2018.02.016] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 01/31/2018] [Accepted: 02/01/2018] [Indexed: 01/22/2023]
Abstract
The proportion of deceased donor kidneys procured for transplant but subsequently discarded has been growing steadily in the United States, but factors contributing to the rising discard rate remain unclear. To assess the reasons for and probability of organ discard we assembled a cohort of 212,305 deceased donor kidneys recovered for transplant from 2000-2015 in the SRTR registry that included 36,700 kidneys that were discarded. 'Biopsy Findings' (38.2%) was the most commonly reported reason for discard. The median Kidney Donor Risk Index of discarded kidneys was significantly higher than transplanted organs (1.78 vs 1.12), but a large overlap in the quality of discarded and transplanted kidneys was observed. Kidneys of donors who were older, female, Black, obese, diabetic, hypertensive or HCV-positive experienced a significantly increased odds of discard. Kidneys from donors with multiple unfavorable characteristics were more likely to be discarded, whereas unilaterally discarded kidneys had the most desirable donor characteristics and the recipients of their partner kidneys experienced a one-year death-censored graft survival rate over 90%. There was considerable geographic variation in the odds of discard across the United States, which further supports the notion that factors beyond organ quality contributed to kidney discard. Thus, while the discard of a small fraction of organs procured from donors may be inevitable, the discard of potentially transplantable kidneys needs to be avoided. This will require a better understanding of the factors contributing to organ discard in order to remove the disincentives to utilize less-than-ideal organs for transplantation.
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Affiliation(s)
- Sumit Mohan
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York, USA; Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York, USA; The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA.
| | - Mariana C Chiles
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York, USA; The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
| | - Rachel E Patzer
- Department of Surgery, Division of Transplantation, Emory University School of Medicine, Emory University, Atlanta, Georgia, USA; Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Stephen O Pastan
- Department of Medicine, Renal Division, Emory University School of Medicine, Emory University, Atlanta, Georgia, USA
| | - S Ali Husain
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York, USA; The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA
| | - Dustin J Carpenter
- Department of Surgery, Division of Transplantation, Columbia University Medical Center, New York, New York, USA
| | - Geoffrey K Dube
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York, USA
| | - R John Crew
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York, USA
| | - Lloyd E Ratner
- Department of Surgery, Division of Transplantation, Columbia University Medical Center, New York, New York, USA
| | - David J Cohen
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York, USA
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18
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Husain SA, Chiles MC, Lee S, Pastan SO, Patzer RE, Tanriover B, Ratner LE, Mohan S. Characteristics and Performance of Unilateral Kidney Transplants from Deceased Donors. Clin J Am Soc Nephrol 2018; 13:118-127. [PMID: 29217537 PMCID: PMC5753314 DOI: 10.2215/cjn.06550617] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 09/29/2017] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND OBJECTIVES The fraction of kidneys procured for transplant that are discarded is rising in the United States. Identifying donors from whom only one kidney was discarded allows us to control for donor traits and better assess reasons for organ discard. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We conducted a retrospective cohort study using United Network for Organ Sharing Standard Transplant Analysis and Research file data to identify deceased donors from whom two kidneys were procured and at least one was transplanted. Unilateral pairs were defined as kidney pairs from a single donor from whom one kidney was discarded ("unilateral discard") but the other was transplanted ("unilateral transplant"). Organ quality was estimated using the Kidney Donor Risk Index and Kidney Donor Profile Index (KDPI). We compared all-cause graft failure rates for unilateral transplants to those for bilateral transplant Kaplan-Meier methods, and life table methodology was used to evaluate 1-, 2-, 3-, and 5-year survival rates of transplants from bilateral and unilateral donors. RESULTS Compared with bilateral donors (i.e., both kidneys transplanted) (n=80,584), unilateral donors (i.e., only one kidney transplanted) (n=7625) had higher mean terminal creatinine (1.3±2.1 mg/dl versus 1.1±0.9 mg/dl) and KDPI (67%±25% versus 42%±27%), were older, and were more likely to have hypertension, diabetes, hepatitis C, terminal stroke, or meet Centers for Disease Control and Prevention high-risk donor criteria. Unilateral discards were primarily attributed to factors expected to be similar in both kidneys from a donor: biopsy findings (22%), no interested recipient (13%), and donor history (7%). Anatomic abnormalities (14%), organ damage (11%), and extended ischemia (6%) accounted for about 30% of discards, but were the commonest reasons among low KDPI kidneys. Among kidneys with KDPI≥60%, there was an incremental difference in allograft survival over time (for unilateral versus bilateral transplants, 1-year survival: 83% versus 87%; 3-year survival: 69% versus 73%; 5-year survival: 51% versus 58%). CONCLUSIONS A large number of discarded kidneys were procured from donors whose contralateral kidneys were transplanted with good post-transplant outcomes.
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Affiliation(s)
- Syed Ali Husain
- Division of Nephrology, Department of Medicine and
- The Columbia University Renal Epidemiology Group, New York, New York
| | - Mariana C. Chiles
- Division of Nephrology, Department of Medicine and
- The Columbia University Renal Epidemiology Group, New York, New York
| | - Samnang Lee
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York
| | | | - Rachel E. Patzer
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia; and
| | - Bekir Tanriover
- Division of Nephrology, Department of Internal Medicine, University of Texas Southwestern, Dallas, Texas
| | - Lloyd E. Ratner
- Division of Transplantation, Department of Surgery, Columbia University Medical Center, New York, New York
| | - Sumit Mohan
- Division of Nephrology, Department of Medicine and
- The Columbia University Renal Epidemiology Group, New York, New York
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York
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19
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Borda B, Németh T, Ottlakan A, Keresztes C, Kemény É, Lázár G. Post-transplantation morphological and functional changes in kidneys from expanded criteria donors. Physiol Int 2017; 104:329-333. [PMID: 29278028 DOI: 10.1556/2060.104.2017.4.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Introduction Despite an increase in the number of cadaver donors and overall organ transplantations, the dramatic increase in the waiting list makes it necessary to reconsider donor criteria. The authors wanted to examine whether differences could exist in the function and/or morphology of transplanted kidneys originated from expanded criteria donors (ECDs) and ideal donors 1 and 5 years after transplantation. Methods Kidney function and histopathologic findings were analyzed and compared 1 and 5 years after transplantation in 97 patients having ECD kidneys and in 178 patients who received ideal donor kidneys (IDK). Results Serum creatinine level was significantly higher (p = 0.001) and estimated glomerular filtration rate was significantly lower (p = 0.003) in patients having ECD kidneys as compared with those with IDK 5 years after transplantation. Morphological changes in the transplanted kidneys, such as tubulitis (p = 0.025) and interstitial inflammation (p = 0.002), were significantly more frequently present in patients with ECD kidneys than in those with IDK 1 year after transplantation. Conclusion Despite an absence of differences in kidney function 1 year after kidney transplantation between patients having ECD and IDK, morphological differences in the transplanted kidneys can be detected between the two groups of patients.
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Affiliation(s)
- B Borda
- 1 Faculty of Medicine, Department of Surgery, University of Szeged , Szeged, Hungary
| | - T Németh
- 1 Faculty of Medicine, Department of Surgery, University of Szeged , Szeged, Hungary
| | - A Ottlakan
- 1 Faculty of Medicine, Department of Surgery, University of Szeged , Szeged, Hungary
| | - C Keresztes
- 2 Department for Medical Translation and Communication, University of Szeged , Szeged, Hungary
| | - É Kemény
- 3 Faculty of Medicine, Institute of Pathology, University of Szeged , Szeged, Hungary
| | - G Lázár
- 1 Faculty of Medicine, Department of Surgery, University of Szeged , Szeged, Hungary
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20
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Stallone G, Grandaliano G. It is the time to rethink the criteria to define transplantable kidneys. Should we combine histological and clinical evaluation? Transpl Int 2017; 30:969-971. [PMID: 28493629 DOI: 10.1111/tri.12982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 05/05/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni Stallone
- Nephrology, Dialysis and Transplantation Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Giuseppe Grandaliano
- Nephrology, Dialysis and Transplantation Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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21
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Mohan S, Campenot E, Chiles MC, Santoriello D, Bland E, Crew RJ, Rosenstiel P, Dube G, Batal I, Radhakrishnan J, Sandoval PR, Guarrera J, Stokes MB, D'Agati V, Cohen DJ, Ratner LE, Markowitz G. Association between Reperfusion Renal Allograft Biopsy Findings and Transplant Outcomes. J Am Soc Nephrol 2017; 28:3109-3117. [PMID: 28684646 DOI: 10.1681/asn.2016121330] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Accepted: 05/06/2017] [Indexed: 11/03/2022] Open
Abstract
Biopsy findings at the time of procurement of deceased donor kidneys remain the most common reason cited for kidney discard. To determine the value of renal allograft histology in predicting outcomes, we evaluated the significance of histologic findings, read by experienced renal pathologists, in 975 postreperfusion biopsy specimens collected from 2005 to 2009 after living donor (n=427) or deceased donor (n=548) renal transplant. We evaluated specimens for the degree of glomerulosclerosis, interstitial fibrosis and tubular atrophy, and vascular disease; specimens with a score of 0 or 1 (scale, 0-3) for each parameter were considered optimal. Overall, 66.3% of living donor kidneys and 50.7% of deceased donor kidneys received an optimal histology score (P<0.001). Irrespective of donor status, suboptimal kidneys came from older donors with a higher incidence of diabetes mellitus, hypertension, and obesity and a higher mean kidney donor risk index (all P<0.001). Death-censored outcomes after transplant differed significantly between optimal and suboptimal kidneys only in the deceased donor transplants (P=0.02). Regardless of histologic classification, outcomes with deceased donor kidneys were inferior to outcomes with living donor kidneys. However, 73.2% of deceased donor kidneys with suboptimal histology remained functional at 5 years. Our findings suggest that histologic findings on postreperfusion biopsy associate with outcomes after deceased donor but not living donor renal transplants, thus donor death and organ preservation-related factors may be of greater prognostic importance. Discarding donated kidneys on the basis of histologic factors may be inappropriate and merits further study.
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Affiliation(s)
- Sumit Mohan
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons New York, New York; .,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York; and
| | | | - Mariana C Chiles
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons New York, New York
| | | | - Eric Bland
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons New York, New York
| | - R John Crew
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons New York, New York
| | | | - Geoffrey Dube
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons New York, New York
| | | | - Jai Radhakrishnan
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons New York, New York
| | - P Rodrigo Sandoval
- Surgery, Columbia University College of Physicians and Surgeons, New York, New York
| | - James Guarrera
- Surgery, Columbia University College of Physicians and Surgeons, New York, New York
| | | | | | - David J Cohen
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians and Surgeons New York, New York
| | - Lloyd E Ratner
- Surgery, Columbia University College of Physicians and Surgeons, New York, New York
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22
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Abstract
The old-for-old allocation policy used for kidney transplantation (KT) has confirmed the survival benefit compared to remaining listed on dialysis. Shortage of standard donors has stimulated the development of strategies aimed to expand acceptance criteria, particularly of kidneys from elderly donors. We have systematically reviewed the literature on those different strategies. In addition to the review of outcomes of expanded criteria donor or advanced age kidneys, we assessed the value of the Kidney Donor Profile Index policy, preimplantation biopsy, dual KT, machine perfusion and special immunosuppressive protocols. Survival and functional outcomes achieved with expanded criteria donor, high Kidney Donor Profile Index or advanced age kidneys are poorer than those with standard ones. Outcomes using advanced age brain-dead or cardiac-dead donor kidneys are similar. Preimplantation biopsies and related scores have been useful to predict function, but their applicability to transplant or refuse a kidney graft has probably been overestimated. Machine perfusion techniques have decreased delayed graft function and could improve graft survival. Investing 2 kidneys in 1 recipient does not make sense when a single KT would be enough, particularly in elderly recipients. Tailored immunosuppression when transplanting an old kidney may be useful, but no formal trials are available.Old donors constitute an enormous source of useful kidneys, but their retrieval in many countries is infrequent. The assumption of limited but precious functional expectancy for an old kidney and substantial reduction of discard rates should be generalized to mitigate these limitations.
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23
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Yang SS, Park JB. Kidney Transplantation from Expanded Criteria Donor in Korea: It's Time to Have Our Own Criteria Based on Our Experiences. KOREAN JOURNAL OF TRANSPLANTATION 2017. [DOI: 10.4285/jkstn.2017.31.1.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Shin-Seok Yang
- Division of Transplantation and Vascular Surgery, Yeungnam University Medical Center, Yeungnam University School of Medicine, Daegu, Korea
| | - Jae Berm Park
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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24
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Wang ZG. Adherence to standardization and integrity in translational medicine research. Chin J Traumatol 2016; 29:212-8. [PMID: 25471422 DOI: 10.1016/j.trre.2015.04.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/13/2015] [Accepted: 04/27/2015] [Indexed: 12/20/2022] Open
Affiliation(s)
- Zheng-Guo Wang
- Professor, Daping Hospital & Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
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25
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Matos AC, Câmara NO, REQUIãO-MOURA LR, Tonato EJ, Filiponi TC, SOUZA-DURãO M, Malheiros DENISEM, Fregonesi M, Borrelli M, Pacheco-Silva A. Presence of arteriolar hyalinosis in post-reperfusion biopsies represents an additional risk to ischaemic injury in renal transplant. Nephrology (Carlton) 2016; 21:923-929. [DOI: 10.1111/nep.12699] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/16/2015] [Accepted: 12/07/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Ana Cristina Matos
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
| | - Niels O Câmara
- Nephrology Department; Federal University of São Paulo; São Paulo Brazil
- Immunology Department; São Paulo University; São Paulo Brazil
| | - Lúcio R REQUIãO-MOURA
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
| | - Eduardo J Tonato
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
| | - Thiago C Filiponi
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
| | - Marcelino SOUZA-DURãO
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
| | - DENISE M Malheiros
- Pathology Department; Hospital Israelita Albert Einstein; São Paulo Brazil
| | - Maurício Fregonesi
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
| | - Milton Borrelli
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
| | - Alvaro Pacheco-Silva
- Renal Transplant Division; Hospital Israelita Albert Einstein; São Paulo São Paulo Brazil
- Nephrology Department; Federal University of São Paulo; São Paulo Brazil
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26
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Significance of Time-Zero Biopsy for Graft Renal Function After Deceased Donor Kidney Transplantation. Transplant Proc 2016; 48:2656-2662. [DOI: 10.1016/j.transproceed.2016.07.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 06/28/2016] [Accepted: 07/26/2016] [Indexed: 01/21/2023]
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27
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Osband AJ, Fyfe B, Laskow DA. Virtual microscopy improves sharing of deceased donor kidneys. Am J Surg 2016; 212:592-595. [DOI: 10.1016/j.amjsurg.2016.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 04/28/2016] [Accepted: 06/17/2016] [Indexed: 11/29/2022]
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28
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Yong ZZ, Kipgen D, Aitken EL, Khan KH, Kingsmore DB. Wedge Versus Core Biopsy at Time Zero: Which Provides Better Predictive Value for Delayed Graft Function With the Remuzzi Histological Scoring System? Transplant Proc 2016; 47:1605-9. [PMID: 26293021 DOI: 10.1016/j.transproceed.2015.03.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 03/04/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Histopathological features on time-zero renal biopsies correlate with graft outcome after renal transplantation. With increasing numbers of marginal donors, assessment of pre-implantation graft quality is essential. The clinician's choice of wedge or core biopsy is performed without evidence of efficacy or safety. This study aims to compare the information derived from wedge biopsy versus core biopsy. METHODS Prospective evaluation of 37 wedge biopsies and 30 core biopsies was performed. Histopathological data were collected on number of glomeruli and arterioles observed, and Remuzzi scoring for glomerulosclerosis, tubular atrophy, interstitial fibrosis, and arteriolar narrowing was performed. Clinical data on delayed graft function (DGF) were also collated. Sensitivity, specificity, and positive and negative predictive values for DGF were compared. RESULTS Patient demographics between the two cohorts were comparable. No complications of biopsies occurred; 81% of wedge biopsies versus 50% of core biopsies had >10 glomeruli (P = .01), whereas 32% of wedge biopsies and 57% of core biopsies had >2 arterioles (P = .02). Wedge biopsies were more likely to identify pathology with more glomerulosclerosis, tubular atrophy (P < .01), and interstitial fibrosis (P < .01). There was a non-significant trend toward high Remuzzi scores in wedge biopsy (22% versus 7% with Remuzzi ≥ 4; P = .12). The sensitivity and positive predictive value of Remuzzi ≥ 4 for predicting DGF was better on wedge biopsy (45.5% versus 0%; P < .01 and 62.5% versus 0%; P < .01, respectively). CONCLUSIONS Wedge biopsies were safe and superior to core biopsies for identifying clinically significant histopathological findings on pre-implantation renal biopsy. We believe that the wedge biopsy is the method of choice for time-zero biopsies.
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Affiliation(s)
- Z Z Yong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
| | | | - E L Aitken
- Renal Transplant Unit, Western Infirmary, Glasgow, Scotland, United Kingdom
| | - K H Khan
- Renal Transplant Unit, Western Infirmary, Glasgow, Scotland, United Kingdom
| | - D B Kingsmore
- Renal Transplant Unit, Western Infirmary, Glasgow, Scotland, United Kingdom
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29
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Batra RK, Heilman RL, Smith ML, Thomas LF, Khamash HA, Katariya NN, Hewitt WR, Singer AL, Mathur AK, Huskey J, Chakkera HA, Moss A, Reddy KS. Rapid Resolution of Donor-Derived Glomerular Fibrin Thrombi After Deceased Donor Kidney Transplantation. Am J Transplant 2016; 16:1015-20. [PMID: 26689853 DOI: 10.1111/ajt.13561] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 09/11/2015] [Accepted: 09/29/2015] [Indexed: 01/25/2023]
Abstract
The aim of this study was to determine the clinical and histologic outcomes related to transplanting kidneys from deceased donors with glomerular fibrin thrombi (GFT). We included all cases transplanted between October 2003 and October 2014 that had either a preimplantation biopsy or an immediate postreperfusion biopsy showing GFT. The study cohort included 61 recipients (9.9%) with GFT and 557 in the control group without GFT. Delayed graft function occurred in 49% of the GFT group and 39% in the control group (p = 0.14). Serum creatinine at 1, 4, and 12 months and estimated GFR at 12 months were similar in the two groups. Estimated 1-year graft survival was 93.2% in the GFT group and 95.1% in the control group (p = 0.22 by log-rank). Fifty-two of the 61 patients in the GFT group (85%) had a 1-month protocol biopsy, and only two biopsies (4%) showed residual focal glomerular thrombi. At the 1-year protocol biopsy, the prevalence of moderate to severe interstitial fibrosis and tubular atrophy was 24% in the GFT group and 30% in the control group (p = 0.42). We concluded that GFT resolves rapidly after transplantation and that transplanting selected kidneys from deceased donors with GFT is a safe practice.
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Affiliation(s)
- R K Batra
- Department of Surgery, Mayo Clinic, Phoenix, AZ
| | - R L Heilman
- Department of Medicine, Mayo Clinic, Phoenix, AZ
| | - M L Smith
- Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ
| | - L F Thomas
- Department of Medicine, Mayo Clinic, Phoenix, AZ
| | - H A Khamash
- Department of Medicine, Mayo Clinic, Phoenix, AZ
| | | | - W R Hewitt
- Department of Surgery, Mayo Clinic, Phoenix, AZ
| | - A L Singer
- Department of Surgery, Mayo Clinic, Phoenix, AZ
| | - A K Mathur
- Department of Surgery, Mayo Clinic, Phoenix, AZ
| | - J Huskey
- Department of Medicine, Mayo Clinic, Phoenix, AZ
| | - H A Chakkera
- Department of Medicine, Mayo Clinic, Phoenix, AZ
| | - A Moss
- Department of Surgery, Mayo Clinic, Phoenix, AZ
| | - K S Reddy
- Department of Surgery, Mayo Clinic, Phoenix, AZ
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30
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Wang CJ, Wetmore JB, Crary GS, Kasiske BL. The Donor Kidney Biopsy and Its Implications in Predicting Graft Outcomes: A Systematic Review. Am J Transplant 2015; 15:1903-14. [PMID: 25772854 DOI: 10.1111/ajt.13213] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 01/06/2015] [Accepted: 01/07/2015] [Indexed: 01/25/2023]
Abstract
Despite a growing organ shortage in the United States, many deceased donor kidneys removed for transplantation are discarded. Kidney biopsy findings often play a role in these discards, although it is not clear whether biopsies reliably inform acceptance decisions. Therefore, we carried out a systematic review of the medical literature on the utility of both procurement and implantation biopsies for predicting posttransplant outcomes. Between January 1, 1994 and July 1, 2014, 47 studies were published in the English language literature that examined the association between pretransplant donor biopsy findings from 50 or more donors (with more than half being from deceased donors) and either posttransplant graft failure, delayed graft function, or graft function. In general, study quality was poor. All were retrospective or did not indicate if they were prospective. Results were heterogeneous, with authors as often as not concluding that biopsy results did not predict posttransplant outcomes. The percent glomerular sclerosis was most often examined, and failed to predict graft failure in 7 of 14 studies. Of 15 semiquantitative scoring systems proposed, none consistently predicted posttransplant outcomes across studies. Routine use of biopsies to help determine whether or not to transplant a kidney should be reexamined.
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Affiliation(s)
- C J Wang
- Division of Nephrology, Department of Medicine, Hennepin County Medical Center, Minneapolis, MN
| | - J B Wetmore
- Division of Nephrology, Department of Medicine, Hennepin County Medical Center, Minneapolis, MN
| | - G S Crary
- Department of Pathology, Hennepin County Medical Center, Minneapolis, MN
| | - B L Kasiske
- Division of Nephrology, Department of Medicine, Hennepin County Medical Center, Minneapolis, MN
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Affiliation(s)
- Barry I Freedman
- Section on Nephrology, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Jasmin Divers
- Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Kevin P High
- Section on Infectious Diseases, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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32
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. EXP CLIN TRANSPLANT 2014; 12. [DOI: 10.6002/ect.2014.0021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Lee APK, Abramowicz D. Is the Kidney Donor Risk Index a step forward in the assessment of deceased donor kidney quality? Nephrol Dial Transplant 2014; 30:1285-90. [DOI: 10.1093/ndt/gfu304] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 08/21/2014] [Indexed: 11/14/2022] Open
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34
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Abstract
In patients with end-stage renal disease, kidney transplantation is the best means to extend survival and offer a better quality of life. The current shortage of organs available for transplantation has led to an effort to expand the kidney donor pool, including the use of nonideal donor kidneys. Assessment of the quality of the donated kidney is essential, and would facilitate the decision to transplant a potential organ or discard it. Multiple clinical and histologic parameters have been examined to evaluate the donor kidney and relate the findings to the graft outcome, but clear-cut criteria are yet to be defined.
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Affiliation(s)
- Nasreen Mohamed
- Department of Pathology and Laboratory Medicine, King Fahad Specialist Hospital-Dammam, Amer Bin Thabet Street-mbc035, PO Box 15215, Dammam 31444, Kingdom of Saudi Arabia
| | - Lynn D Cornell
- Division of Anatomic Pathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.
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35
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Philosophe B, Malat GE, Soundararajan S, Barth RN, Manitpisikul W, Wilson NS, Ranganna K, Drachenberg CB, Papadimitriou JC, Neuman BP, Munivenkatappa RB. Validation of the Maryland Aggregate Pathology Index (MAPI), a pre-implantation scoring system that predicts graft outcome. Clin Transplant 2014; 28:897-905. [DOI: 10.1111/ctr.12400] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin Philosophe
- Department of Surgery; School of Medicine; Johns Hopkins University; Baltimore MD USA
| | - Gregory E. Malat
- Department of Pharmacy; College of Medicine; Drexel University; Philadelphia PA USA
| | | | - Rolf N. Barth
- Department of Surgery; School of Medicine; University of Maryland; Baltimore MD USA
| | - Wana Manitpisikul
- Department of Pharmacy; University of Maryland Medical Center; Baltimore MD USA
| | - Nikita S. Wilson
- Department of Pharmacy; University of Maryland Medical Center; Baltimore MD USA
| | - Karthik Ranganna
- Department of Surgery; School of Medicine; University of Maryland; Baltimore MD USA
- Department of Nephrology; College of Medicine; Drexel University; Philadelphia PA USA
| | | | - John C. Papadimitriou
- Department of Pathology; School of Medicine; University of Maryland; Baltimore MD USA
| | - Brian P. Neuman
- Department of Surgery; School of Medicine; Johns Hopkins University; Baltimore MD USA
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A single-center cohort study to define the role of pretransplant biopsy score in the long-term outcome of kidney transplantation. Transplantation 2014; 97:934-9. [PMID: 24342976 DOI: 10.1097/01.tp.0000438208.50089.29] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND The role of pretransplant biopsy in defining the quality of kidney grafts is still debated. The aim of this study was to investigate the influence of pretransplant biopsy score on long-term graft outcome. METHODS In a retrospective cohort study, we analyzed 372 recipients of single kidney transplantation (SKT) from deceased donors between 1997 and 2007, with an available pretransplant biopsy. We evaluated 5- and 10-year graft survival, incidence of delayed graft function, and estimated glomerular filtration rate at 1 and 5 years. RESULTS Graft survival at 5 and 10 years was significantly better for recipients with a score of 0 compared to transplants with a score of 1 to 5, whereas we did not observe any significant difference among transplants with a score of 1 through 4. Survival of kidneys with a score of 5 was significantly worse compared to grafts with a score of 1 to 4. In a multivariate Cox model, only pretransplant histological score was significantly associated with graft survival. Transplants with a score of 0 and 5 had the best and the worst graft function, respectively, both at 1 and 5 years, whereas we did not observe any difference among patients with a score of 1 through 4. In a multivariate logistic regression, pretransplant histological score was independently associated with the prevalence of an estimated glomerular filtration rate less than 30 mL/min at 5 years. Finally, delayed graft function rate was significantly higher in recipients with a score of 5 compared to patients with a score of 1 to 4 and score of 0. CONCLUSIONS Our data suggest that 1) pretransplant histological score may predict long-term graft outcome and 2) allocation of kidneys with a score of 4 to SKT provides an acceptable long-term graft function and survival.
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37
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Lee AL, Kim YS, Lim BJ, Jeong HJ, Joo DJ, Kim MS, Huh KH. The impact of time-zero biopsy on early graft outcomes after living donor kidney transplantation. Transplant Proc 2014; 45:2937-40. [PMID: 24157007 DOI: 10.1016/j.transproceed.2013.08.081] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND In contrast with deceased donor transplantation, the clinical significance of pathologic findings in time-zero biopsies after living donor kidney transplantation are rarely reported, due to the expectation that histologic findings and renal function are normal. The aim of this study was to identify subclinical pathologic findings in living donors and examine the effect on early graft renal function. METHODS Between December 2006 and July 2011, 146 living-donor kidney transplant recipients were enrolled in this study. We retrospectively analyzed donor and recipient-related clinical parameters, and post-transplant 6 months and 1 year estimated glomerular filtration rate (eGFR) as early graft renal function. Time-zero biopsies were evaluated using the 2007 Banff criteria. RESULTS Most abnormal histologic findings were of mild degree as determined by Banff scores. Global glomerulosclerosis (GS, 35.6%), tubular atrophy (CT, 36.3%), interstitial fibrosis (CI, 20.5%), vascular fibrous intimal thickening (CV, 4.1%), arteriolar hyaline thickening (AH, 14.4%), interstitial inflammation (I, 3.4%) were pathologic findings in time-zero biopsies. The univariate analysis revealed that donor age and gender were significantly associated with eGFR at post-transplant 6 months and at 1 year (P < .05). Furthermore, GS and CT were significantly associated with early graft renal function (P < .05). However, multivariate linear regression analysis showed only donor age was significantly associated with early graft renal function (P = .001). CONCLUSION A mild degree of subclinical, pathologic findings on time-zero biopsy did not affect early graft renal function in living-donor kidney transplantation.
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Affiliation(s)
- A L Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea; The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
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Pre-implant biopsy predicts outcome of single-kidney transplantation independent of clinical donor variables. Transplantation 2014; 97:426-32. [PMID: 24285339 DOI: 10.1097/01.tp.0000437428.12356.4a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Pre-implant biopsy findings account for the discard of many donor kidneys although their clinical value is not fully understood. We retrospectively investigated the predictive value of pre-implant histology, which in our center was obtained for protocol purposes, not for transplant decisions, on long-term allograft and recipient outcome after single-kidney transplantation. METHODS This single-center study included 628 consecutive adult recipients of 174 Expanded Criteria Donor (ECD) and 454 Standard Criteria Donor kidneys. Chronic donor organ injury was assessed applying a chronic lesion score differentiating between mild, moderate, and severe histologic organ injury based on the integration of glomerular, vascular, tubular, and interstitial lesions. Recipients were followed over a median time of 7.8 years. RESULTS Donor kidneys exhibiting mild or moderate chronic lesions yielded almost identical graft and recipient survival independent of ECD status or other clinical covariables (HR 1.20, 95% CI 0.83-1.74, P=0.326, and HR 1.27, 95% CI 0.83-1.95, P=0.274, respectively). However, if allograft injury was severe, occurring in 3% of transplanted kidneys, graft and recipient survival was significantly reduced (HR 3.13, 95% CI 1.61-6.07, P<0.001 and HR 2.42, 95% CI 1.16-5.04, P=0.005, respectively). CONCLUSION The results suggest that donor kidneys displaying moderate chronic injury can safely be transplanted as single kidneys, while organs displaying severe injury should be discarded. Thus, pre-implant biopsy might offer an effective approach to increase the utilization of renal donor organs, especially from ECD and donors with cerebrovascular accident as cause of death, and to improve overall graft outcome.
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Hall IE, Reese PP, Weng FL, Schröppel B, Doshi MD, Hasz RD, Reitsma W, Goldstein MJ, Hong K, Parikh CR. Preimplant histologic acute tubular necrosis and allograft outcomes. Clin J Am Soc Nephrol 2014; 9:573-82. [PMID: 24558049 PMCID: PMC3944773 DOI: 10.2215/cjn.08270813] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 12/04/2013] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND OBJECTIVES The influence of deceased-donor AKI on post-transplant outcomes is poorly understood. The few published studies about deceased-donor preimplant biopsy have reported conflicting results regarding associations between AKI and recipient outcomes. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS This multicenter study aimed to evaluate associations between deceased-donor biopsy reports of acute tubular necrosis (ATN) and delayed graft function (DGF), and secondarily for death-censored graft failure, first adjusting for the kidney donor risk index and then stratifying by donation after cardiac death (DCD) status. RESULTS Between March 2010 and April 2012, 651 kidneys (369 donors, 4 organ procurement organizations) were biopsied and subsequently transplanted, with ATN reported in 110 (17%). There were 262 recipients (40%) who experienced DGF and 38 (6%) who experienced graft failure. DGF occurred in 45% of kidneys with reported ATN compared with 39% without ATN (P=0.31) resulting in a relative risk (RR) of 1.13 (95% confidence interval [95% CI], 0.9 to 1.43) and a kidney donor risk index-adjusted RR of 1.11 (95% CI, 0.88 to 1.41). There was no significant difference in graft failure for kidneys with versus without ATN (8% versus 5%). In stratified analyses, the adjusted RR for DGF with ATN was 0.97 (95% CI, 0.7 to 1.34) for non-DCD kidneys and 1.59 (95% CI, 1.23 to 2.06) for DCD kidneys (P=0.02 for the interaction between ATN and DCD on the development of DGF). CONCLUSIONS Despite a modest association with DGF for DCD kidneys, this study reveals no significant associations overall between preimplant biopsy-reported ATN and the outcomes of DGF or graft failure. The potential benefit of more rigorous ATN reporting is unclear, but these findings provide little evidence to suggest that current ATN reports are useful for predicting graft outcomes or deciding to accept or reject allograft offers.
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Affiliation(s)
- Isaac E. Hall
- Program of Applied Translational Research, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut
| | | | | | | | | | - Rick D. Hasz
- Gift of Life Institute, Philadelphia, Pennsylvania
| | | | - Michael J. Goldstein
- Mount Sinai School of Medicine and New York Organ Donor Network, New York, New York; and
| | - Kwangik Hong
- Program of Applied Translational Research, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Chirag R. Parikh
- Program of Applied Translational Research, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut
- Section of Nephrology, Veterans Affairs Medical Center, West Haven, Connecticut
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Affiliation(s)
- Sayeed Khan Malek
- Transplant Surgery, Brigham & Women's Hospital, Boston, Massachusetts
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Kasiske BL, Stewart DE, Bista BR, Salkowski N, Snyder JJ, Israni AK, Crary GS, Rosendale JD, Matas AJ, Delmonico FL. The role of procurement biopsies in acceptance decisions for kidneys retrieved for transplant. Clin J Am Soc Nephrol 2014; 9:562-71. [PMID: 24558053 DOI: 10.2215/cjn.07610713] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND OBJECTIVES There is a shortage of kidneys for transplant, and many patients on the deceased donor kidney transplant waiting list would likely benefit from kidneys that are currently being discarded. In the United States, the most common reason given for discarding kidneys retrieved for transplant is procurement biopsy results. This study aimed to compare biopsy results from discarded kidneys with discard attributed to biopsy findings, with biopsy results from comparable kidneys that were successfully transplanted. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS In this retrospective, observational, case-control study, biopsy reports were examined from 83 kidneys discarded in 2010 due to biopsy findings (cases), 83 contralateral transplanted kidneys from the same donor (contralateral controls), and 83 deceased donors randomly matched to cases by donor risk profile (randomly matched controls). A second procurement biopsy was obtained in 64 of 332 kidneys (19.3%). RESULTS The quality of biopsy reports was low, with amounts of tubular atrophy, interstitial inflammation, arteriolar hyalinosis, and acute tubular necrosis often not indicated; 69% were wedge biopsies and 94% used frozen tissue. The correlation between first and second procurement biopsies was poor; only 25% of the variability (R(2)) in glomerulosclerosis was explained by biopsies being from the same kidney. The percentages of glomerulosclerosis overlapped substantially between cases, contralateral controls, and randomly matched controls: 17.1%±15.3%, 9.0%±6.6%, and 5.0%±5.9%, respectively. Of all biopsy findings, only glomerulosclerosis>20% was independently correlated with discard (cases versus contralateral controls; odds ratio, 15.09; 95% confidence interval, 2.47 to 92.41; P=0.003), suggesting that only this biopsy result was used in acceptance decisions. One-year graft survival was 79.5% and 90.7% in contralateral and randomly matched controls, respectively, versus 91.6% among all deceased donor transplants in the Scientific Registry of Transplant Recipients. CONCLUSIONS Routine use of biopsies could lead to unnecessary kidney discards.
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Affiliation(s)
- Bertram L Kasiske
- Scientific Registry of Transplant Recipients, Minneapolis Medical Research Foundation, Minneapolis, Minnesota;, †Department of Medicine and, ¶Department of Laboratory Medicine and Pathology, Hennepin County Medical Center, Minneapolis, Minnesota;, ‡Organ Procurement and Transplantation Network, United Network for Organ Sharing, Richmond, Virginia;, §Departments of Medicine and, *Surgery, and, ‖Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota, ††New England Organ Bank, Waltham, Massachusetts
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Identification of expanded-criteria donor kidney grafts at lower risk of delayed graft function. Transplantation 2013; 96:633-8. [PMID: 23912171 DOI: 10.1097/tp.0b013e31829d9225] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND Organ shortage leads to the increased use of expanded-criteria donor (ECD) kidneys, which contribute to a higher risk of delayed graft function (DGF) after transplantation. The aim of this study was to determine factors that may better predict the risk of DGF. METHODS Histologic assessments of donor renal biopsy were used with other clinical variables to predict the risk of DGF after kidney transplantation. The total Banff score equaled the sum of interstitial fibrosis (CI), tubular atrophy, arteriolar hyaline thickening, fibrous intimal thickening (CV), and fraction of sclerotized glomeruli. RESULTS In total, 126 of 344 patients developed DGF after kidney transplantation. The histologic score for CI, tubular atrophy, and CV and the total Banff score were increased in patients with DGF. Only CI and CV were independent predictors of DGF (P<0.01). A CIV score (CI+CV; odds ratio, 2.68; 95% confidence interval, 1.55-4.66; P<0.001) was superior to the combination of the total Banff score (odds ratio, 1.48; 95% confidence interval, 0.85-2.55; P=NS). A CIV score≥1, donor age more than 51 years, and anoxia donor brain injury were associated with the highest risk of DGF. A CIV<1 identified a subgroup of ECDs at a lower risk of DGF comparable with standard-criteria donors (29.3% vs. 28.4%). CONCLUSIONS Composite CIV score better identifies ECD kidneys with a lower risk of developing DGF. Morphologic evaluation of ECD kidneys and donor characteristics may improve kidney allocation.
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The reproducibility and predictive value on outcome of renal biopsies from expanded criteria donors. Kidney Int 2013; 85:1161-8. [PMID: 24284518 DOI: 10.1038/ki.2013.461] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 08/29/2013] [Accepted: 09/05/2013] [Indexed: 11/08/2022]
Abstract
Reproducibility and predictive value on outcome are the main criteria to evaluate the utility of histological scores. Here we analyze the reproducibility of donor biopsy assessment by different on-call pathologists and the retrospective evaluation by a single renal pathologist blinded to clinical outcomes. We also evaluate the predictive value on graft outcome of both evaluations. A biopsy was performed in donors with any of the following: age≥55 years, hypertension, diabetes, creatinine>1.5 mg/dl, or stroke. Glomerulosclerosis, interstitial fibrosis, tubular atrophy, intimal thickening, and arteriolar hyalinosis evaluated according to the Banff criteria were added to obtain a chronic score. Biopsies were classified as mild (≥3), intermediate (4-5), or advanced (6-7) damage, and unacceptable (≥8) for transplantation of 127 kidneys biopsied. Weighted κ value between both readings was 0.41 (95% CI: 0.28-0.54). Evaluation of biopsies by the renal pathologist was significantly and independently associated with estimated 12-month glomerular filtration rate and a significant composite outcome variable, including death-censored graft survival and time to reach an estimated glomerular filtration rate<30 ml/min per 1.73 m2. Thus, there was no association between readings of on-call pathologists and outcome. The lack of association between histological scores obtained by the on-call pathologists and graft outcome suggests that a specific training on renal pathology is recommended to optimize the use of kidneys retrieved from expanded criteria donors.
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Nickeleit V. Foretelling the future: predicting graft outcome by evaluating kidney baseline transplant biopsies. J Am Soc Nephrol 2013; 24:1716-9. [PMID: 23990674 PMCID: PMC3810094 DOI: 10.1681/asn.2013070761] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Volker Nickeleit
- Division of Nephropathology, Department of Pathology and Laboratory Medicine, The University of North Carolina, Chapel Hill, North Carolina
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De Vusser K, Lerut E, Kuypers D, Vanrenterghem Y, Jochmans I, Monbaliu D, Pirenne J, Naesens M. The predictive value of kidney allograft baseline biopsies for long-term graft survival. J Am Soc Nephrol 2013; 24:1913-23. [PMID: 23949799 DOI: 10.1681/asn.2012111081] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The effect of baseline histology and individual histologic lesions at the time of transplantation on long-term graft survival has been evaluated using different scoring systems, but the predictive capacity of these systems has not been adequately validated. All kidney recipients transplanted in a single institution between 1991 and 2009 who underwent a baseline kidney allograft biopsy at transplantation were included in this prospective study (N=548). All baseline biopsies were rescored according to the updated Banff classification, and the relationship between the individual histologic lesions and donor demographics was assessed using hierarchical clustering and principal component analysis. Survival analysis was performed using Cox proportional hazards analysis and log-rank testing. Mean follow-up time was 6.7 years after transplantation. Interstitial fibrosis, tubular atrophy, and glomerulosclerosis associated significantly with death-censored graft survival, whereas arteriolar hyalinosis and vascular intimal thickening did not. Notably, donor age correlated significantly with interstitial fibrosis, tubular atrophy, and glomerulosclerosis and associated independently with graft survival. On the basis of these findings, a novel scoring system for prediction of 5-year graft survival was constructed by logistic regression analysis. Although the predictive performance of previously published histologic scoring systems was insufficient to guide kidney allocation in our cohort (receiver operating characteristic area under the curve ≤0.62 for each system), the new system based on histologic data and donor age was satisfactory for prediction of allograft loss (receiver operating characteristic area under the curve = 0.81) and may be valuable in the assessment of kidney quality before transplantation.
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Abstract
PURPOSE OF REVIEW To provide an up-to-date overview about the assessment of donor biopsies and to discuss the current problems and chances of preimplantation biopsies for transplant allocation with a focus on the technical work up and the histological variables scored. RECENT FINDINGS Preimplantation biopsy results are the major reason for discarding procured extended donor criteria kidneys in the USA. There is neither a consensus on the work up, nor the reporting of preimplantation donor biopsies, nor the importance of the biopsy findings in the process of allocation. The best available data have been collected in the context of single vs. double kidney transplantation. A clinical risk factor score may help to define kidneys when a preimplantation biopsy is warranted. Punch biopsies using a skin punch device appear to be a reasonable alternative for surgeons fearing needle biopsies. SUMMARY Donor biopsies are very useful as zero-hour biopsies establishing baseline information for comparison with subsequent transplant biopsies. As none of the histological variables and scores provides perfect prediction, preimplantation biopsy results have to be interpreted in the context of all available donor and recipient information.
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Pierobon ES, Sefora PE, Sandrini S, Silvio S, De Fazio N, Nicola DF, Rossini G, Giuseppe R, Fontana I, Iris F, Boschiero L, Luigino B, Gropuzzo M, Maria G, Gotti E, Eliana G, Donati D, Donato D, Minetti E, Enrico M, Gandolfo MT, Teresa GM, Brunello A, Anna B, Libetta C, Carmelo L, Secchi A, Antonio S, Chiaramonte S, Stefano C, Rigotti P, Paolo R. Optimizing utilization of kidneys from deceased donors over 60 years: five-year outcomes after implementation of a combined clinical and histological allocation algorithm. Transpl Int 2013; 26:833-41. [PMID: 23782175 DOI: 10.1111/tri.12135] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 11/02/2012] [Accepted: 05/16/2013] [Indexed: 01/16/2023]
Abstract
This 5 year observational multicentre study conducted in the Nord Italian Transplant programme area evaluated outcomes in patients receiving kidneys from donors over 60 years allocated according to a combined clinical and histological algorithm. Low-risk donors 60-69 years without risk factors were allocated to single kidney transplant (LR-SKT) based on clinical criteria. Biopsy was performed in donors over 70 years or 60-69 years with risk factors, allocated to Single (HR-SKT) or Dual kidney transplant (HR-DKT) according to the severity of histological damage. Forty HR-DKTs, 41 HR-SKTs and 234 LR-SKTs were evaluated. Baseline differences generally reflected stratification and allocation criteria. Patient and graft (death censored) survival were 90% and 92% for HR-DKT, 85% and 89% for HR-SKT, 88% and 87% for LR-SKT. The algorithm appeared user-friendly in daily practice and was safe and efficient, as demonstrated by satisfactory outcomes in all groups at 5 years. Clinical criteria performed well in low-risk donors. The excellent outcomes observed in DKTs call for fine-tuning of cut-off scores for allocation to DKT or SKT in high-risk patients.
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Affiliation(s)
- Elisa Sefora Pierobon
- Kidney - Pancreas Transplant Unit, Department of Surgical, Oncological and Gastroenterological Sciences, University of Padua, Padua, Italy
| | - Pierobon Elisa Sefora
- Kidney - Pancreas Transplant Unit, Department of Surgical, Oncological and Gastroenterological Sciences, University of Padua, Padua, Italy
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Borda B. [Comparison of functional and morphological changes of transplanted kidneys from marginal and ideal donors]. Orv Hetil 2012; 153:1793-6. [PMID: 23123327 DOI: 10.1556/oh.2012.29486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Despite an increased number of cadaver donors and organ transplantations, there is a marked increase in the number of patients included in the transplantation waiting list. AIM AND METHOD The aim of the study was to evaluate functional and morphologic changes of kidney allografts obtained from marginal (n = 63) and "ideal" donors (n = 186). In patients with kidneys from marginal donors, the impact of donor age and the presence of hypertension in donors on kidney function were also studied. RESULTS One year after kidney transplantation, kidney function was similar in patients transplanted with kidneys from marginal and "ideal" donors, although significant morphologic differences were observed between the two groups. However, five years after transplantation serum creatinine (p = 0.0001) and eGFR (p = 0.003) were significantly different between patients transplanted with kidneys from marginal and "ideal" donors. There was also a significant difference in serum creatinine level of patients who received kidneys from donors older than 55 years of age compared to patients whose kidney allografts were obtained form donor who has hypertension (p = 0.0003). Acute rejection episodes (p = 0.0004) and interstitial fibrosis/tubular atrophy (p = 0.002) occurred more frequently in patients with kidneys from marginal compared to those from "ideal" donors. CONCLUSION One year after kidney transplantation renal function is similar in patients transplanted with kidneys from marginal and "ideal" donors, but patients with kidneys from marginal donors have significantly more impaired renal function five years after kidney transplantation.
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Affiliation(s)
- Bernadett Borda
- Szegedi Tudományegyetem, Általános Orvostudományi Kar Sebészeti Klinika, Szeged, Pécsi u. 6. 6720.
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Singh P, Farber JL, Doria C, Francos GC, Gulati R, Ramirez CB, Maley WR, Frank AM. Peritransplant kidney biopsies: comparison of pathologic interpretations and practice patterns of organ procurement organizations. Clin Transplant 2012; 26:E191-9. [PMID: 22283182 DOI: 10.1111/j.1399-0012.2011.01584.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The preimplantation kidney biopsy affects utilization by diagnosing glomerulosclerosis, interstitial fibrosis (IF), arteriosclerosis, and arteriolar hyalinosis. Organ procurement organizations (OPOs) determine whether a donor warrants this biopsy and the donor hospital pathologists (DHPs) report on an OPO-specific pathology interpretation form. Biopsy slides from 40 deceased donor kidneys transplanted at our institution were used to compare interpretations between our transplant pathologist and the DHPs. Thirty-three of these kidneys also had post-perfusion biopsies (PPB). All 58 OPOs were queried for criteria used to request a preimplantation biopsy, and their pathology interpretation forms were also analyzed. The transplant and DHPs had substantial agreement for percent glomerulosclerosis with 75% of biopsies being interpreted within five percentage points. Concordance for IF was poor. The DHP rarely reported arterial pathology. Seventy percent of preimplantation and PPB were read similarly for glomerulosclerosis; concordance for other lesions was weaker. There were no cues for arterial disease on our OPO's pathology interpretation form. Criteria for obtaining a preimplantation biopsy lacked uniformity for the 21 OPOs with a self-generated policy. The pathology interpretation forms varied widely among the OPOs. Current OPO practices with regard to the preimplantation biopsy should be improved.
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Affiliation(s)
- Pooja Singh
- Division of Nephrology, Department of Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
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