1
|
Avramidou E, Srinivasan D, Todorov D, Tsoulfas G, Papalois V. Diagnostic and Prognostic Value of Machine Perfusion Biomarkers in Kidney Graft Evaluation. Transplant Proc 2024:S0041-1345(24)00350-6. [PMID: 39069459 DOI: 10.1016/j.transproceed.2024.05.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 05/24/2024] [Indexed: 07/30/2024]
Abstract
BACKGROUND With the rising prevalence of end-stage kidney disease, the use of expanded criteria donor allografts, seen as essential for meeting organ demand, still proves challenging due to their higher risk of graft loss, delayed function, and rejection. Machine perfusion, a technique in preserving allografts, offers improved allograft outcomes compared to static cold storage while allowing for the noninvasive measurement of kidney injury biomarkers in the perfusate solution. This offers an objective method to assess graft function at various preservation stages. MATERIALS AND METHODS We conducted a narrative review of the databases PubMed and Scopus, including studies written in the English language and published after 2010. RESULTS In this narrative review, we identified biomarkers, like 4-hydroxyproline, taurine, and glutathione transferase, as predictive markers of delayed graft function. Additionally, biomarkers, like extracellular histone h3, vascular cell adhesion protein, and matrix metalloprotease protein, have shown correlation with decreased graft function, although their predictive ability remains inconclusive. DISCUSSION The review outlines various suggestions for potential areas of research focus to enhance future expanded criteria donor allograft utilization. However, limitations exist, including the absence of a singular reliable biomarker and the challenges of validating biomarker effectiveness across diverse outcomes.
Collapse
Affiliation(s)
- Eleni Avramidou
- Department of Transplantation Surgery, Center for Research and Innovation in Solid Organ Transplantation, Aristotle University School of Medicine, Thessaloniki, Greece.
| | - Divya Srinivasan
- Department of Medicine, Imperial College London, London, United Kingdom
| | - Dominik Todorov
- Department of Medicine, Imperial College London, London, United Kingdom
| | - Georgios Tsoulfas
- Department of Transplantation Surgery, Center for Research and Innovation in Solid Organ Transplantation, Aristotle University School of Medicine, Thessaloniki, Greece
| | - Vassilios Papalois
- Imperial College Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| |
Collapse
|
2
|
Boenink R, Kramer A, Masoud S, Rodríguez-Benot A, Helve J, Bistrup C, Segelmark MM, Rodríguez Arévalo OL, Kerschbaum J, de Vries APJ, Lundgren T, Bell S, Crespo M, Sørensen SS, Ferraro PM, Arnol M, Bakkaloglu SA, Weekers L, Reisæter AV, Rebić D, Ortiz A, Jager KJ, Stel VS. International comparison and time trends of first kidney transplant recipient characteristics across Europe: an ERA Registry study. Nephrol Dial Transplant 2024; 39:648-658. [PMID: 37653455 DOI: 10.1093/ndt/gfad189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND The aim of this study was to provide an overview of age, sex and primary renal disease (PRD) distribution among first kidney transplant recipients across Europe. METHOD The European Renal Association (ERA) Registry database was used to obtain data on patients aged 20 years or older receiving their first kidney transplant between 2010 and 2019 from 12 European countries. The numbers and percentages of recipients in each age, sex and PRD group were calculated by country, donor type and year. RESULTS In total, 99 543 adults received a first kidney transplant. Overall, 23% of the recipients were 65 years or older, 36% were female, and 21% had glomerulonephritis and 15% diabetes mellitus as PRD. Compared with deceased donor kidney transplant recipients, living donor kidney transplant recipients were less often 65 years or older (13% versus 26%), more often had glomerulonephritis (25% versus 20%) and less often diabetes mellitus (8% versus 17%) as PRD. We found large international differences, which were most prominent for age and PRD and less prominent for sex. Over time, the largest change in recipient characteristics was observed for the percentage of recipients aged 65 years or older, increasing from 18% in 2010 to 28% in 2019 for all countries combined with a similar trend in most countries. CONCLUSION We observed large differences for age and PRD distribution between recipients of living and deceased donor kidneys and between European countries. Over time, the percentage of older first kidney transplant recipients increased.
Collapse
Affiliation(s)
- Rianne Boenink
- ERA Registry, Department of Medical Informatics, Amsterdam UMC location AMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Public Health, Quality of Care and Ageing & Later Life, Amsterdam, The Netherlands
| | - Anneke Kramer
- ERA Registry, Department of Medical Informatics, Amsterdam UMC location AMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Public Health, Quality of Care and Ageing & Later Life, Amsterdam, The Netherlands
| | - Sherry Masoud
- UK Renal Registry, UK Kidney Association, Bristol, UK
- DPMCN, School of Medicine, Cardiff University, Cardiff, UK
- Renal Medicine & Transplantation, North Bristol NHS Trust, Bristol, UK
| | - Alberto Rodríguez-Benot
- Kidney and Pancreas Transplantation Unit, Nephrology Dept University Hospital Reina Sofia, Cordoba, Spain
- Sistema de Información de la Coordinación Autonómica de Trasplantes de Andalucía (SICATA), Spain
| | - Jaakko Helve
- Finnish Registry for Kidney Diseases, Helsinki, Finland
- Abdominal Center Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Claus Bistrup
- Department of Nephrology, Odense University Hospital, Odense, Denmark
| | - Mårten M Segelmark
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Endocrinology, Nephrology and Rheumatology, Skane University Hospital, Lund, Sweden
| | - Olga L Rodríguez Arévalo
- Registry of Renal Patients of the Valencian Community, General Directorate of Public Health and Addictions, Ministry of Universal Health and Public Health, Valencia, Spain
- Health and Well-being Technologies Program, Polytechnic University of Valencia, Valencia, Spain
| | - Julia Kerschbaum
- Austrian Dialysis and Transplant Registry, Department of Internal Medicine IV - Nephrology and Hypertension, Medical University Innsbruck, Innsbruck, Austria
| | - Aiko P J de Vries
- Department of Medicine, Division of Nephrology, Leiden Transplant Center, Leiden University Medical Center and Leiden University, Leiden, The Netherlands
| | - Torbjörn Lundgren
- Division of Transplantation Surgery, CLINTEC, Karolinska Institute, Stockholm, Sweden
| | - Samira Bell
- Scottish Renal Registry, Meridian Court, Glasgow, UK
- Division of Population Health and Genomics, University of Dundee, Dundee, UK
| | - Marta Crespo
- Department of Nephrology, Hospital del Mar, Barcelona, Spain
- Institut Mar d'Investigacions Médiques, Barcelona, Spain
| | - Søren S Sørensen
- Department of Nephrology P, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark
| | - Pietro Manuel Ferraro
- U.O.S. Terapia Conservativa della Malattia Renale Cronica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
| | - Miha Arnol
- Department of Nephrology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | | | | | - Anna Varberg Reisæter
- Department of Transplantation Medicine, Oslo University hospital, Rikshospitalet, Oslo, Norway
| | - Damir Rebić
- Clinic for Nephrology, Clinical Center University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Alberto Ortiz
- Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Fundación Renal Iñigo Alvarez de Toledo, Madrid, Spain
| | - Kitty J Jager
- ERA Registry, Department of Medical Informatics, Amsterdam UMC location AMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Public Health, Quality of Care and Ageing & Later Life, Amsterdam, The Netherlands
| | - Vianda S Stel
- ERA Registry, Department of Medical Informatics, Amsterdam UMC location AMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Public Health, Quality of Care and Ageing & Later Life, Amsterdam, The Netherlands
| |
Collapse
|
3
|
Patrick G, Hickner B, Goli K, Ferreira LD, Goss J, Rana A. Trends in Survival for Adult Organ Transplantation. ANNALS OF SURGERY OPEN 2024; 5:e383. [PMID: 38883932 PMCID: PMC11175954 DOI: 10.1097/as9.0000000000000383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 01/08/2024] [Indexed: 06/18/2024] Open
Abstract
Objective Intent-to-treat analysis follows patients from listing to death, regardless of their transplant status, and aims to provide a more holistic scope of the progress made in adult solid-organ transplantation. Background Many studies have shown progress in waitlist and post-transplant survival for adult kidney, liver, heart, and lung transplants, but there is a need to provide a more comprehensive perspective of transplant outcomes for patients and their families. Methods Univariable and multivariable Cox regression analyses were used to analyze factors contributing to intent-to-treat survival in 813,862 adults listed for kidney, liver, heart, and lung transplants. The Kaplan-Meier method was used to examine changes in waitlist, post-transplant, and intent-to-treat survival. Transplantation rates were compared using χ2 tests. Results Intent-to-treat survival has steadily increased for liver, heart, and lung transplants. The percentage of patients transplanted within 1 year significantly increased for heart (57.4% from 52.9%) and lung (73.5% from 33.2%). However, the percentage of patients transplanted within 1 year significantly decreased from 35.8% to 21.2% for kidney transplant. Notably, intent-to-treat survival has decreased for kidneys despite increases in waitlist and post-transplant survival, likely because of the decreased transplant rate. Conclusion Intent-to-treat survival steadily improved for liver, heart, and lung transplant over the 30-year study period. Continued advancements in allocation policy, immunosuppression, and improved care of patients on the waitlist may contribute to further progress in outcomes of all organs, but the increasing discrepancy in supply and demand of donor kidneys is alarming and has impeded the progress of kidney intent-to-treat survival.
Collapse
Affiliation(s)
- Grant Patrick
- From the Department of Student Affairs, Baylor College of Medicine, Houston, Texas
| | - Brian Hickner
- Michael E. Debakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Karthik Goli
- From the Department of Student Affairs, Baylor College of Medicine, Houston, Texas
| | - Liam D Ferreira
- From the Department of Student Affairs, Baylor College of Medicine, Houston, Texas
| | - John Goss
- Division of Abdominal Transplantation, Michael E. Debakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Abbas Rana
- Division of Abdominal Transplantation, Michael E. Debakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
4
|
Zhang C, Bartosova M, Marinovic I, Schwab C, Schaefer B, Vondrak K, Ariceta G, Zaloszyc A, Ranchin B, Taylan C, Büscher R, Oh J, Mehrabi A, Schmitt CP. Peritoneal transformation shortly after kidney transplantation in pediatric patients with preceding chronic peritoneal dialysis. Nephrol Dial Transplant 2023; 38:2170-2181. [PMID: 36754369 DOI: 10.1093/ndt/gfad031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND The unphysiological composition of peritoneal dialysis (PD) fluids induces progressive peritoneal fibrosis, hypervascularization and vasculopathy. Information on these alterations after kidney transplantation (KTx) is scant. METHODS Parietal peritoneal tissues were obtained from 81 pediatric patients with chronic kidney disease stage 5 (CKD5), 72 children on PD with low glucose degradation product (GDP) PD fluids, and from 20 children 4-8 weeks after KTx and preceding low-GDP PD. Tissues were analyzed by digital histomorphometry and quantitative immunohistochemistry. RESULTS While chronic PD was associated with peritoneal hypervascularization, after KTx vascularization was comparable to CKD5 level. Submesothelial CD45 counts were 40% lower compared with PD, and in multivariable analyses independently associated with microvessel density. In contrast, peritoneal mesothelial denudation, submesothelial thickness and fibrin abundance, number of activated, submesothelial fibroblasts and of mesothelial-mesenchymal transitioned cells were similar after KTx. Diffuse peritoneal podoplanin positivity was present in 40% of the transplanted patients. In subgroups matched for age, PD vintage, dialytic glucose exposure and peritonitis incidence, submesothelial hypoxia-inducible factor 1-alpha abundance and angiopoietin 1/2 ratio were lower after KTx, reflecting vessel maturation, while arteriolar and microvessel p16 and cleaved Casp3 were higher. Submesothelial mast cell count and interleukin-6 were lower, whereas transforming growth factor-beta induced pSMAD2/3 was similar as compared with children on PD. CONCLUSIONS Peritoneal membrane damage induced with chronic administration of low-GDP PD fluids was less severe after KTx. While peritoneal microvessel density, primarily defining PD transport and ultrafiltration capacity, was normal after KTx and peritoneal inflammation less pronounced, diffuse podoplanin positivity and profibrotic activity were prevalent.
Collapse
Affiliation(s)
- Conghui Zhang
- Center for Pediatric and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - Maria Bartosova
- Center for Pediatric and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - Iva Marinovic
- Center for Pediatric and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - Constantin Schwab
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - Betti Schaefer
- Center for Pediatric and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - Karel Vondrak
- Department of Pediatrics, University Hospital Motol, Prague, Czech Republic
| | - Gema Ariceta
- Hospital Universitario Materno-Infantil Vall d'Hebron, Barcelona, Spain
| | - Ariane Zaloszyc
- Department of Pediatrics 1, University Hospital of Strasbourg, Strasbourg, France
| | - Bruno Ranchin
- Service de Néphrologie Pédiatrique, Hôpital Femme Mere Enfant, Lyon, France
| | - Christina Taylan
- Pediatric Nephrology, Children's and Adolescent's Hospital, University Hospital of Cologne, Cologne, Germany
| | - Rainer Büscher
- Pediatric Nephrology, University Children's Hospital, Essen, Germany
| | - Jun Oh
- Department of Pediatric Nephrology, University Children's Medical Clinic, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Arianeb Mehrabi
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Claus Peter Schmitt
- Center for Pediatric and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| |
Collapse
|
5
|
Raza Abidi SS, Naqvi A, Worthen G, Vinson A, Abidi S, Kiberd B, Skinner T, West K, Tennankore KK. Multiview Clustering to Identify Novel Kidney Donor Phenotypes for Assessing Graft Survival in Older Transplant Recipients. KIDNEY360 2023; 4:951-961. [PMID: 37291713 PMCID: PMC10371275 DOI: 10.34067/kid.0000000000000190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 05/08/2023] [Indexed: 06/10/2023]
Abstract
Key Points An unsupervised machine learning clustering algorithm identified distinct deceased kidney donor phenotypes among older recipients. Recipients of certain donor phenotypes were at a relatively higher risk of all-cause graft loss even after accounting for recipient factors. The use of unsupervised clustering to support kidney allocation systems may be an important area for future study. Background Older transplant recipients are at a relatively increased risk of graft failure after transplantation, and some of this risk may relate to donor characteristics. Unsupervised clustering using machine learning may be a novel approach to identify donor phenotypes that may then be used to evaluate outcomes for older recipients. Using a cohort of older recipients, the purpose of this study was to (1 ) use unsupervised clustering to identify donor phenotypes and (2 ) determine the risk of death/graft failure for recipients of each donor phenotype. Methods We analyzed a nationally representative cohort of kidney transplant recipients aged 65 years or older captured using the Scientific Registry of Transplant Recipients between 2000 and 2017. Unsupervised clustering was used to generate phenotypes using donor characteristics inclusive of variables in the kidney donor risk index (KDRI). Cluster assignment was internally validated. Outcomes included all-cause graft failure (including mortality) and delayed graft function. Differences in the distribution of KDRI scores were also compared across the clusters. All-cause graft failure was compared for recipients of donor kidneys from each cluster using a multivariable Cox survival analysis. Results Overall, 23,558 donors were separated into five clusters. The area under the curve for internal validation of cluster assignment was 0.89. Recipients of donor kidneys from two clusters were found to be at high risk of all-cause graft failure relative to the lowest risk cluster (adjusted hazards ratio, 1.86; 95% confidence interval, 1.69 to 2.05 and 1.73; 95% confidence interval, 1.61 to 1.87). Only one of these high-risk clusters had high proportions of donors with established risk factors (i.e. , hypertension, diabetes). KDRI scores were similar for the highest and lowest risk clusters (1.40 [1.18–1.67] and 1.37 [1.15–1.65], respectively). Conclusions Unsupervised clustering can identify novel donor phenotypes comprising established donor characteristics that, in turn, may be associated with different risks of graft loss for older transplant recipients.
Collapse
Affiliation(s)
- Syed Sibte Raza Abidi
- Division of Nephrology, Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Darema M, Athanasopoulou D, Bellos I, Tsoumbou I, Vittoraki AG, Bokos J, Marinaki S, Boletis IN. Evaluation of Kidney Donor Risk Index/Kidney Donor Profile Index as Predictor Tools of Deceased-Donor Kidney Transplant Outcomes in a Greek Cohort. J Clin Med 2023; 12:jcm12062439. [PMID: 36983440 PMCID: PMC10054426 DOI: 10.3390/jcm12062439] [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: 02/18/2023] [Revised: 03/16/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
The Kidney Donor Risk Index (KDRI) and Kidney Donor Profile Index (KDPI) have been developed to assess deceased-donor graft quality, although validation of their utility outside the USA remains limited. This single-center retrospective cohort study evaluated the ability of KDRI and KDPI to predict transplant outcomes in a Greek cohort. The efficacy of KDRI, KDPI, and donor's age in predicting death-censored graft failure was primarily assessed. Overall, 394 donors and 456 recipients were included. Death-censored graft survival was significantly worse with increasing KDRI (hazard ratio-HR: 2.21, 95% confidence intervals-CI: 1.16-4.22), KDPI (HR: 1.01, 95% CI: 1.00-1.02), and donor's age (HR: 1.03, 95% CI: 1.00-1.05). The unadjusted discriminative ability was similar for KDPI (C-statistic: 0.54) and donor's age (C-statistic: 0.52). The KDPI threshold of 85 was not predictive of graft failure (p-value: 0.19). Higher KDPI was linked to delayed graft function and worse kidney function, but not among expanded-criteria donor transplantations. No significant association was found between KDRI, KDPI, and patient survival. In conclusion, increasing KDRI and KDPI are linked to worse graft function, although their ability to discriminate long-term graft failure remains limited.
Collapse
Affiliation(s)
- Maria Darema
- Department of Nephrology and Kidney Transplantation, Medical School, Laiko General Hospital of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Diamanto Athanasopoulou
- Department of Nephrology and Kidney Transplantation, Medical School, Laiko General Hospital of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Ioannis Bellos
- Department of Nephrology and Kidney Transplantation, Medical School, Laiko General Hospital of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Ioanna Tsoumbou
- Department of Nephrology and Kidney Transplantation, Medical School, Laiko General Hospital of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Angeliki G Vittoraki
- Immunology Department & National Tissue Typing Center, General Hospital of Athens "G. Gennimatas", 11527 Athens, Greece
| | - John Bokos
- Transplantation Unit, Laiko General Hospital, 11527 Athens, Greece
| | - Smaragdi Marinaki
- Department of Nephrology and Kidney Transplantation, Medical School, Laiko General Hospital of Athens, National and Kapodistrian University, 11527 Athens, Greece
| | - Ioannis N Boletis
- Department of Nephrology and Kidney Transplantation, Medical School, Laiko General Hospital of Athens, National and Kapodistrian University, 11527 Athens, Greece
| |
Collapse
|
7
|
Population Characteristics and Clinical Outcomes from the Renal Transplant Outcome Prediction Validation Study (TOPVAS). J Clin Med 2022; 11:jcm11247421. [PMID: 36556037 PMCID: PMC9781432 DOI: 10.3390/jcm11247421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Kidney transplantation is the preferred method for selected patients with kidney failure. Despite major improvements over the last decades, a significant proportion of organs are still lost every year. Causes of graft loss and impaired graft function are incompletely understood and prognostic tools are lacking. Here, we describe baseline characteristics and outcomes of the non-interventional Transplant Outcome Prediction Validation Study (TOPVAS). A total of 241 patients receiving a non-living kidney transplant were recruited in three Austrian transplantation centres and treated according to local practices. Clinical information as well as blood and urine samples were obtained at baseline and consecutive follow-ups up to 24 months. Out of the overall 16 graft losses, 11 occurred in the first year. The patient survival rate was 96.7% (95% CI: 94.3-99.1%) in the first year and 94.3% (95% CI: 91.1-97.7%) in the second year. Estimated glomerular filtration rate (eGFR) improved from 37.1 ± 14.0 mL/min/1.73 m2 at hospital discharge to 45.0 ± 14.5 mL/min/1.73 m2 at 24 months. The TOPVAS study provides information on current kidney graft and patient survival, eGFR trajectories, and rejection rates, as well as infectious and surgical complication rates under different immunosuppressive drug regimens. More importantly, it provides an extensive and well-characterized biobank for the future discovery and validation of prognostic methods.
Collapse
|
8
|
Sharif A. Deceased Donor Characteristics and Kidney Transplant Outcomes. Transpl Int 2022; 35:10482. [PMID: 36090778 PMCID: PMC9452640 DOI: 10.3389/ti.2022.10482] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 07/25/2022] [Indexed: 11/25/2022]
Abstract
Kidney transplantation is the therapy of choice for people living with kidney failure who are suitable for surgery. However, the disparity between supply versus demand for organs means many either die or are removed from the waiting-list before receiving a kidney allograft. Reducing unnecessary discard of deceased donor kidneys is important to maximize utilization of a scarce and valuable resource but requires nuanced decision-making. Accepting kidneys from deceased donors with heterogenous characteristics for waitlisted kidney transplant candidates, often in the context of time-pressured decision-making, requires an understanding of the association between donor characteristics and kidney transplant outcomes. Deceased donor clinical factors can impact patient and/or kidney allograft survival but risk-versus-benefit deliberation must be balanced against the morbidity and mortality associated with remaining on the waiting-list. In this article, the association between deceased kidney donor characteristics and post kidney transplant outcomes for the recipient are reviewed. While translating this evidence to individual kidney transplant candidates is a challenge, emerging strategies to improve this process will be discussed. Fundamentally, tools and guidelines to inform decision-making when considering deceased donor kidney offers will be valuable to both professionals and patients.
Collapse
Affiliation(s)
- Adnan Sharif
- Department of Nephrology and Transplantation, University Hospitals Birmingham, Queen Elizabeth Hospital, Birmingham, United Kingdom
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- *Correspondence: Adnan Sharif,
| |
Collapse
|
9
|
Huijben JA, Kramer A, Kerschbaum J, de Meester J, Collart F, Arévalo OLR, Helve J, Lassalle M, Palsson R, Ten Dam M, Casula A, Methven S, Ortiz A, Ferraro PM, Segelmark M, Mingo PU, Arici M, Reisæter AV, Stendahl M, Stel VS, Jager KJ. Increasing numbers and improved overall survival of patients on kidney replacement therapy over the last decade in Europe: an ERA Registry study. Nephrol Dial Transplant 2022; 38:1027-1040. [PMID: 35974693 PMCID: PMC10064979 DOI: 10.1093/ndt/gfac165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION The aim of this study was to describe the trends in the incidence, prevalence and survival of patients on kidney replacement therapy (KRT) for end-stage kidney disease (ESKD) across Europe from 2008 to 2017. METHODS Data from renal registries in 9 countries and 16 regions that provided individual patient data to the ERA Registry from 2008 to 2017 were included. These registries cover 34% of the general population in Europe. Crude and standardized incidence and prevalence per million population (pmp) were determined. Trends over time were studied using Joinpoint regression. Survival probabilities were estimated using Kaplan-Meier analysis and hazard ratios (HRs) using Cox regression analysis. RESULTS The standardized incidence of KRT was stable (annual percentage change [APC]: -1.48 [-3.15; 0.21]) from 2008 (146.0 pmp) to 2011 (141.6 pmp), followed by a slight increase (APC: 1.01 [0.43; 1.60]) to 148.0 pmp in 2017, although trends in incidence varied across countries. This increase was primarily due to a rise in the incidence of KRT in men older than 65 years. Moreover, as a cause of kidney failure, diabetes mellitus is increasing. The standardized prevalence increased from 2008 (990.0 pmp) to 2017 (1166.8 pmp) (APC: 1.82 [1.75; 1.89]). Patient survival on KRT improved in the time period 2011-2013 compared with 2008-2010 (adjusted HR: 0.94 [0.93; 0.95). CONCLUSION This study showed an overall increase in the incidence and prevalence of KRT for ESKD as well as an increase in the KRT patient survival over the last decade in Europe.
Collapse
Affiliation(s)
- Jilske A Huijben
- Department of Medical Informatics, ERA-EDTA Registry, Amsterdam UMC, Academic Medical Center, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Anneke Kramer
- Department of Medical Informatics, ERA-EDTA Registry, Amsterdam UMC, Academic Medical Center, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Julia Kerschbaum
- Austrian Dialysis and Transplant Registry, Department of Internal Medicine IV - Nephrology and Hypertension, Medical University Innsbruck, Austria
| | - Johan de Meester
- Department of Nephrology, Dialysis and Hypertension, Dutch-speaking Belgian Renal Registry (NBVN), Sint-Niklaas, Belgium
| | | | - Olga Lucía Rodríguez Arévalo
- Valencia Region Renal Registry, Dirección General de Salut Publica i Adiccions, Valencia, Spain.,Doctoral student of the Technologies for Health and Well-being program, Universidad Politécnica de Valencia, Valencia, Spain
| | - Jaakko Helve
- Finnish Registry for Kidney Diseases, Helsinki, Finland.,Abdominal Center Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Mathilde Lassalle
- REIN Registry, Agence de la Biomédecine, Saint-Denis La Plaine, France
| | - Runolfur Palsson
- Division of Nephrology, Landspitali-The National University Hospital of Iceland, Reykjavik, Iceland.,Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Marc Ten Dam
- Dutch Registry RENINE, Nefrovisie, Utrecht, The Netherlands
| | - Anna Casula
- UK Renal Registry, the Renal Association, Bristol, UK
| | - Shona Methven
- Department of Renal Medicine, Aberdeen Royal Infirmary, Foresterhill Health Campus, Aberdeen, UK
| | - Alberto Ortiz
- School of Medicine, IIS-Fundacion Jimenez Diaz, University Autonoma of Madrid, FRIAT and REDINREN, Madrid, Spain
| | - Pietro Manuel Ferraro
- U.O.S. Terapia Conservativa della Malattia Renale Cronica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
| | - Mårten Segelmark
- Department of Clinical Sciences, Division of Nephrology, Lund University and Skane University Hospital, Lund, Sweden.,Swedish Renal Registry, Department of Internal Medicine, Ryhov County Hospital, Jönköping, Sweden
| | - Pablo Ucio Mingo
- Coordinador Autonómico de Trasplantes de Castilla y León, Dirección General de Planificación y Asistencia Sanitaria, Valladolid, Castilla y León, Spain
| | - Mustafa Arici
- Department of Nephrology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Anna Varberg Reisæter
- Department of Transplantation Medicine, Oslo University hospital, Rikshospitalet, Norway
| | - Maria Stendahl
- Swedish Renal Registry, Department of Internal Medicine, Ryhov County Hospital, Jönköping, Sweden
| | - Vianda S Stel
- Department of Medical Informatics, ERA-EDTA Registry, Amsterdam UMC, Academic Medical Center, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - Kitty J Jager
- Department of Medical Informatics, ERA-EDTA Registry, Amsterdam UMC, Academic Medical Center, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| |
Collapse
|
10
|
Eller K, Böhmig GA, Banas MC, Viklicky O. Editorial: Advances in the diagnosis and treatment in kidney transplantation. Front Med (Lausanne) 2022; 9:967749. [PMID: 35991631 PMCID: PMC9382307 DOI: 10.3389/fmed.2022.967749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 06/28/2022] [Indexed: 11/28/2022] Open
Affiliation(s)
- Kathrin Eller
- Division of Nephrology, Medical University of Graz, Graz, Austria
- *Correspondence: Kathrin Eller
| | - Georg A. Böhmig
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Miriam C. Banas
- Department of Nephrology, University Hospital Regensburg, Regensburg, Germany
| | - Ondrej Viklicky
- Department of Nephrology, Transplant Center, Institute for Clinical and Experimental Medicine, Prague, Czechia
| |
Collapse
|
11
|
Beyond Graft Survivl: A National Cohort Study Quantifying the Impact of Increasing Kidney Donor Profile Index on Recipient Outcomes 1 Year Post-transplantation. Transplant Direct 2022; 8:e1308. [PMID: 35474655 PMCID: PMC9029898 DOI: 10.1097/txd.0000000000001308] [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: 01/21/2022] [Accepted: 01/29/2022] [Indexed: 11/26/2022] Open
Abstract
Background. The reporting of a locally validated kidney donor profile index (KDPI) began in Australia in 2016. Across diverse populations, KDPI has demonstrated utility in predicting allograft survival and function. A metric that incorporates both elements may provide a more comprehensive picture of suboptimal recipient outcomes. Methods. A retrospective cohort study of adult kidney transplant recipients in Australia (January 2009 to December 2014) was conducted. Conventional recipient outcomes and a composite measure of suboptimal outcome (1-y allograft failure or estimated glomerular filtration rate [eGFR] <30 mL/min) were evaluated across KDPI intervals (KDPI quintiles and 5-point increments in the KDPI 81–100 cohort). The impact of increasing KDPI on allograft function (1-y eGFR) and a suboptimal outcome was explored using multivariable regression models, adjusting for potential confounding factors. Results. In 2923 donor kidneys eligible for analysis, median KDPI was 54 (interquartile range [IQR], 31–77), and Kidney Donor Risk Index was 1.39 (IQR, 1.03–1.67). The median 1-y eGFR was 52.74 mL/min (IQR, 40.79–66.41 mL/min). Compared with the first quintile reference group, progressive reductions in eGFR were observed with increasing KDPI and were maximal in the fifth quintile (adjusted β-coefficient: −27.43 mL/min; 95% confidence interval, –29.44 to –25.42; P < 0.001). A suboptimal outcome was observed in 359 recipients (12.3%). The adjusted odds for this outcome increased across quintiles from a baseline of odds ratio of 1.00 (first quintile) to odds ratio of 11.68 (95% confidence interval, 6.33-21.54, P < 0.001) in the fifth quintile cohort. Conclusions. Increases in donor KDPI were associated with higher probabilities of a suboptimal outcome and poorer baseline allograft function, particularly in the KDPI > 80 cohort. These findings may inform pretransplant discussions with potential recipients of high-KDPI allografts.
Collapse
|
12
|
Thebridge L, Fisher C, Puttaswamy V, Pollock C, Clarke J. Systematic review of intra-operative duplex scanning during renal transplantation. Australas J Ultrasound Med 2022; 25:42-50. [PMID: 35251902 PMCID: PMC8873620 DOI: 10.1002/ajum.12289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
INTRODUCTION A systematic review of the value of intra-operative duplex scanning during renal transplantation was undertaken. METHODS Studies assessing intra-operative renal cortical flow in the arcuate vessels with outcomes of ultrasound directed interventions during the initial procedure, delayed graft function, post-operative resistive indices, graft losses and early returns to theatre for graft hypoperfusion were reviewed. PROSPERO registration: (https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020203873). RESULTS Literature searching identified 2069 articles for screening, with 131 reviewed and 12 selected for analysis comprising 5 individual case reports, one case series of 11 patients and 6 non-randomised controlled trials. Studies with similar methodologies were pooled because of the low number of studies and outcomes. Outcomes of interest were not reported for all patients. Intra-operative interventions comprising graft repositioning in 18 (16%) and vascular revision in 2 (2%) were performed in 115 patients undergoing intra-operative scans. There were no graft losses or returns to theatre for graft hypoperfusion (0 of 108 cases) compared to 7 of 71 (10%) without intraoperative scanning (P = 0.003). Three of 8 (38%) patients with high intra-operative resistive indices (RIs) were returned to theatre for hypoperfusion compared to 1 of 110 (1%) patients with normal resistive indices (P = <0.001). Ten of 13 (77%) patients with high RIs had delayed graft function compared to 10 of 40 (25%) with normal RIs (P = 0.001). CONCLUSION Despite the absence of randomised controlled trials, and heterogeneous small studies, adverse outcomes were reduced with intra-operative scanning. High intraoperative RIs were predictive of both delayed graft function and return to theatre for hypoperfusion.
Collapse
Affiliation(s)
- Linda Thebridge
- Department of Vascular SurgeryRoyal North HospitalSt LeonardsNew South WalesAustralia
- Faculty of Medicine and HealthUniversity of SydneyCamperdownNew South Wales2006Australia
| | - Charles Fisher
- Department of Vascular SurgeryRoyal North HospitalSt LeonardsNew South WalesAustralia
| | - Vikram Puttaswamy
- Department of Vascular SurgeryRoyal North HospitalSt LeonardsNew South WalesAustralia
| | - Carol Pollock
- Department of Vascular SurgeryRoyal North HospitalSt LeonardsNew South WalesAustralia
- Faculty of Medicine and HealthUniversity of SydneyCamperdownNew South Wales2006Australia
| | - Jillian Clarke
- Faculty of Medicine and HealthUniversity of SydneyCamperdownNew South Wales2006Australia
| |
Collapse
|