1
|
Maclay LM, Yu M, Amaral S, Adler JT, Sandoval PR, Ratner LE, Schold JD, Mohan S, Husain SA. Disparities in Access to Timely Waitlisting Among Pediatric Kidney Transplant Candidates. Pediatrics 2024:e2024065934. [PMID: 39086359 DOI: 10.1542/peds.2024-065934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 08/02/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Kidney transplantation with minimal or no dialysis exposure provides optimal outcomes for children with end-stage kidney disease. We sought to understand disparities in timely access to transplant waitlisting. METHODS We conducted a retrospective, registry-based cohort study of candidates ages 3 to 17 added to the US kidney transplant waitlist 2015 to 2019. We defined "preemptive waitlisting" as waitlist addition before receiving dialysis and compared demographics of candidates based on preemptive status. We used competing risk regression to determine the association between preemptive waitlisting and transplantation. We then identified waitlist additions age >18 who initiated dialysis as children, thereby missing pediatric allocation prioritization, and evaluated the association between waitlisting with pediatric prioritization and transplantation. RESULTS Among 4506 pediatric candidates, 48% were waitlisted preemptively. Female sex, Hispanic ethnicity, Black race, and public insurance were associated with lower adjusted relative risk of preemptive waitlisting. Preemptive listing was not associated with time from waitlist activation to transplantation (adjusted hazard ratio 0.94, 95% confidence interval 0.87-1.02). Among transplant recipients waitlisted preemptively, 68% had no pretransplant dialysis, whereas recipients listed nonpreemptively had median 1.6 years of dialysis at transplant. Among 415 candidates initiating dialysis as children but waitlisted as adults, transplant rate was lower versus nonpreemptive pediatric candidates after waitlist activation (adjusted hazard ratio 0.54, 95% confidence interval 0.44-0.66). CONCLUSIONS Disparities in timely waitlisting are associated with differences in pretransplant dialysis exposure despite no difference in time to transplant after waitlist activation. Young adults who experience delays may miss pediatric prioritization, highlighting an area for policy intervention.
Collapse
Affiliation(s)
- Lindsey M Maclay
- Departments of Medicine, Division of Nephrology
- Columbia University Renal Epidemiology Group, New York, New York
| | - Miko Yu
- Departments of Medicine, Division of Nephrology
- Columbia University Renal Epidemiology Group, New York, New York
| | - Sandra Amaral
- Division of Nephrology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
- Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Joel T Adler
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - P Rodrigo Sandoval
- Surgery, Columbia University Vagelos College of Physicians and Surgeons, New York, New York
| | - Lloyd E Ratner
- Surgery, Columbia University Vagelos College of Physicians and Surgeons, New York, New York
| | - Jesse D Schold
- Department of Surgery, University of Colorado - Anschutz Medical Campus, Aurora
- Department of Epidemiology, School of Public Health, University of Colorado - Anschutz Medical Campus, Aurora
| | - Sumit Mohan
- Departments of Medicine, Division of Nephrology
- Columbia University Renal Epidemiology Group, New York, New York
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
| | - Syed Ali Husain
- Departments of Medicine, Division of Nephrology
- Columbia University Renal Epidemiology Group, New York, New York
| |
Collapse
|
2
|
Wang C, Garg AX, Luo B, Kim SJ, Knoll G, Yohanna S, Treleaven D, McKenzie S, Ip J, Cooper R, Elliott L, Naylor KL. Defining pre-emptive living kidney donor transplantation as a quality indicator. Am J Transplant 2024; 24:1445-1455. [PMID: 38395149 DOI: 10.1016/j.ajt.2024.02.017] [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: 10/03/2023] [Revised: 01/31/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024]
Abstract
Quality indicators in kidney transplants are needed to identify care gaps and improve access to transplants. We used linked administrative health care databases to examine multiple ways of defining pre-emptive living donor kidney transplants, including different patient cohorts and censoring definitions. We included adults from Ontario, Canada with advanced chronic kidney disease between January 1, 2013, to December 31, 2018. We created 4 unique incident patient cohorts, varying the eligibility by the risk of progression to kidney failure and whether individuals had a recorded contraindication to kidney transplant (eg, home oxygen use). We explored the effect of 4 censoring event definitions. Across the 4 cohorts, size varied substantially from 20 663 to 9598 patients, with the largest reduction (a 43% reduction) occurring when we excluded patients with ≥1 recorded contraindication to kidney transplantation. The incidence rate (per 100 person-years) of pre-emptive living donor kidney transplant varied across cohorts from 1.02 (95% CI: 0.91-1.14) for our most inclusive cohort to 2.21 (95% CI: 1.96-2.49) for the most restrictive cohort. Our methods can serve as a framework for developing other quality indicators in kidney transplantation and monitoring and improving access to pre-emptive living donor kidney transplants in health care systems.
Collapse
Affiliation(s)
- Carol Wang
- Division of Nephrology, Western University, London, Ontario, Canada.
| | - Amit X Garg
- Division of Nephrology, Western University, London, Ontario, Canada; ICES, Ontario, Canada; Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada; Lawson Health Research Institute and London Health Sciences Centre, London, Ontario, Canada
| | - Bin Luo
- ICES, Ontario, Canada; Lawson Health Research Institute and London Health Sciences Centre, London, Ontario, Canada
| | - S Joseph Kim
- Division of Nephrology and the Ajmera Transplant Centre, University Health Network, Toronto, Ontario, Canada
| | - Gregory Knoll
- University of Ottawa, Department of Medicine (Nephrology) and the Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Seychelle Yohanna
- Division of Nephrology, McMaster University, Hamilton, Ontario, Canada
| | - Darin Treleaven
- Division of Nephrology, McMaster University, Hamilton, Ontario, Canada
| | | | - Jane Ip
- Ontario Renal Network, Ontario Health, Ontario, Canada
| | - Rebecca Cooper
- Ontario Renal Network, Ontario Health, and Trillium Gift of Life Network, Ontario Health, Canada
| | - Lori Elliott
- Ontario Renal Network, Ontario Health, Ontario, Canada
| | - Kyla L Naylor
- ICES, Ontario, Canada; Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada; Lawson Health Research Institute and London Health Sciences Centre, London, Ontario, Canada
| |
Collapse
|
3
|
Yang J, Endo Y, Munir MM, Woldesenbet S, Altaf A, Limkemann A, Schenk A, Washburn K, Pawlik TM. Waitlist Time, Age, and Social Vulnerability: Impact on the Survival Benefit of Deceased Donor Kidney Transplantation Versus Long-term Dialysis Among Patients With End-stage Renal Disease. Transplantation 2024:00007890-990000000-00807. [PMID: 38995240 DOI: 10.1097/tp.0000000000005125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
BACKGROUND We sought to define the survival benefit of kidney transplantation versus long-term dialysis relative to waitlist time on dialysis, social vulnerability, and age among end-stage renal transplant candidates. METHODS End-stage renal disease patients who were candidates for their first deceased donor kidney transplantation between 2008 and 2020 were identified using the US Renal Data System. Survival probabilities for patient survival were compared using the restricted mean survival times (RMSTs) across different age and social vulnerability index (SVI) ranges. RESULTS Among 149 923 patients, 68 795 (45.9%) patients underwent a kidney transplant and 81 128 (54.1%) remained on dialysis. After propensity-score matching (n = 58 035 in each cohort), the 5-y RMST difference between kidney transplant and dialysis demonstrated an increasing trend in mean life-years gained within 5 y of follow-up relative to advancing age (<30 y: 0.40 y, 95% confidence interval, 0.36-0.44 y versus >70 y: 0.75 y, 95% confidence interval, 0.70-0.80 y). Conversely, disparities in 5-y RMSTs remained consistent relative to social vulnerability (median 5-y RMST difference: 0.62 y comparing low versus high SVI). When considering waitlist duration, stratified analyses demonstrated increasing trends across different age groups with the largest RMST differences observed among older patients aged ≥70 y. Notably, longer waitlist durations (>3 y) yielded more pronounced RMST differences compared with shorter durations (<1 y). CONCLUSIONS These data underscore the survival benefit associated with kidney transplantation over long-term dialysis across various age and SVI ranges. Transplantation demonstrated a greater advantage among older patients who had a longer waitlist duration.
Collapse
Affiliation(s)
- Jason Yang
- Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Yutaka Endo
- Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Muhammad Musaab Munir
- Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Selamawit Woldesenbet
- Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Abdulla Altaf
- Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Ashley Limkemann
- Department of Surgery, Division of Transplantation, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Austin Schenk
- Department of Surgery, Division of Transplantation, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Kenneth Washburn
- Department of Surgery, Division of Transplantation, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| | - Timothy M Pawlik
- Department of Surgery, Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH
| |
Collapse
|
4
|
Lindahl JP, Åsberg A, Heldal K, Jenssen T, Dörje C, Skauby M, Midtvedt K. Long-term Outcomes After Kidney Transplantation From DBD Donors Aged 70 y and Older. Transplant Direct 2024; 10:e1660. [PMID: 38911276 PMCID: PMC11191925 DOI: 10.1097/txd.0000000000001660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 05/10/2024] [Indexed: 06/25/2024] Open
Abstract
Background Transplantation of kidneys from elderly donations after brain death (DBD) donors has increased owing to organ shortages. We aimed to assess the impact on long-term kidney transplant outcomes from DBD donors aged 70 y and older compared with kidneys from younger donors. Methods From 2007 to 2022, 2274 first single kidney transplantations from DBD donors were performed at our center. Data from 1417 kidney transplant recipients receiving a DBD organ were included and categorized into 3 groups according to donor age: 70 y and older (n = 444, median age 74 y), 60-69 y (n = 527, median age 64 y), and a reference group consisting of donors aged 45-54 y (n = 446, median age 50 y). Kaplan-Meier plots and multivariate Cox regression with correction for recipient, donor, and transplant characteristics were used to investigate patient and kidney graft survival outcomes. Results The median patient follow-up time was 9.3 y (interquartile range, 5.3-13.1). The adjusted hazard ratios for patient death in recipients of kidneys from DBD donors aged 70 y and older compared with 60-69 y and 45-54 y were 1.12 (95% confidence interval [CI], 0.92-1.36; P = 0.26) and 1.62 (95% CI, 1.26-2.07; P < 0.001), respectively. Compared with recipients of donors aged 60-69 y and 45-54 y, the adjusted hazard ratios for kidney graft loss in recipients of donors aged 70 y and older were 1.23 (95% CI, 1.02-1.48; P = 0.029) and 1.94 (95% CI, 1.54-2.45; P < 0.001), respectively. Conclusions Transplantation of kidneys from DBD donors aged 70 y and older resulted in acceptable long-term outcomes and is encouraging.
Collapse
Affiliation(s)
- Jørn Petter Lindahl
- Department of Transplant Medicine, Section of Nephrology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Anders Åsberg
- Department of Transplant Medicine, Section of Nephrology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Department of Pharmacy, University of Oslo, Oslo, Norway
| | - Kristian Heldal
- Department of Transplant Medicine, Section of Nephrology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Health and Society, University of Oslo, Oslo, Norway
| | - Trond Jenssen
- Department of Transplant Medicine, Section of Nephrology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Christina Dörje
- Department of Transplant Medicine, Section of Nephrology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Morten Skauby
- Department of Transplant Medicine, Section of Transplant Surgery, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Karsten Midtvedt
- Department of Transplant Medicine, Section of Nephrology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| |
Collapse
|
5
|
Saiki T, Sasaki K, Doi S, Takahashi A, Osaki Y, Ishiuchi N, Maeoka Y, Kawai T, Kawaoka K, Takahashi S, Nagai T, Irifuku T, Nakashima A, Masaki T. Comparison between the 0- and 30-s balloon dilation time in percutaneous transluminal angioplasty for restenosed arteriovenous fistula among hemodialysis patients: a multicenter, prospective, randomized trial (CARP study). Clin Exp Nephrol 2024; 28:647-655. [PMID: 38416340 PMCID: PMC11189949 DOI: 10.1007/s10157-024-02469-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 01/22/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND This study aims to compare patency rates of the 0- and 30-s (sec) balloon dilation time in hemodialysis (HD) patients with restenosis after percutaneous transluminal angioplasty (PTA). METHODS The patients who underwent PTA within 6 months for failed arteriovenous fistula at the forearm were randomly assigned the 0-s or 30-s dilation time group. Effect of dilation time on the 3- and 6-month patency rates after PTA was examined. RESULTS Fifty patients were enrolled in this study. The 3-month patency rate in the 30-s dilation group was better than that in the 0-s dilation group (P = 0.0050), while the 6-month patency rates did not show a significant difference between the two groups (P = 0.28). Cox's proportional hazard model revealed that 30-s of inflation time (hazard ratio 0.027; P = 0.0072), diameter of the proximal (hazard ratio 0.32; P = 0.031), and dilation pressure (hazard ratio 0.63; P = 0.014) were associated with better 3-month patency. Dilation pressure between previous and present PTA did not differ in the 0-s (P = 0.15) and 30-s dilation groups (P = 0.16). The 6-month patency rate of the present PTA in the 30-s dilation group was higher than that of the previous PTA (P = 0.015). The visual analog scale did not differ between the two groups (P = 0.51). CONCLUSION The presenting data suggest that 30-s dilation potentially results in a better 3-month patency rate than 0-s dilation in HD patients with restenosis after PTA.
Collapse
Affiliation(s)
- Tomoki Saiki
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Kensuke Sasaki
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Shigehiro Doi
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Akira Takahashi
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Yosuke Osaki
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Naoki Ishiuchi
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Yujiro Maeoka
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | | | | | - Shunsuke Takahashi
- Department of Nephrology, National Hospital Organization Kure Medical Center, Kure, Japan
| | | | - Taisuke Irifuku
- Department of Nephrology, National Hospital Organization Higashihiroshima Medical Center, Higashihiroshima, Japan
| | - Ayumu Nakashima
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| |
Collapse
|
6
|
Sibulesky L, Leca N, Bakthavatsalam R, Perkins JD. Kidney retransplantation outcomes in adults aged 70 and older: Analysis of risk factors and survival. Clin Transplant 2024; 38:e15170. [PMID: 37943592 DOI: 10.1111/ctr.15170] [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: 08/03/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 11/10/2023]
Abstract
BACKGROUND An increasing number of older patients are undergoing kidney transplant. Because of a finite longevity, more patients will be faced with failing allografts. At present there is a limited understanding of the benefits and risks associated with kidney retransplantation in this challenging population. METHODS We performed a retrospective analysis of the Organ Procurement and Transplantation Network database of all adults ≥70 undergoing kidney retransplant from January 1, 2014 to December 31, 2022. We examined patient and graft survival of retransplanted patients compared to first time transplants. We also analyzed the risk factors that impacted the survival. RESULTS During the study period there has been a significant rise in the number of retransplants performed, with 631 patients undergoing the procedure. Although clinically insignificant, overall graft, and patient survival rates were slightly lower in the retransplant group compared to the primary transplant group. With retransplant, patient survival was 91.3%, 75.6%, and 56.9% compared to 93.4%, 81.4%, and 64.4% with primary transplant at 1, 3, and 5 years, respectively. With retransplant, graft survival was 89.5%, 73.5%, 57.4% compared to 91.5%, 79.0%, and 63.6% in a primary transplant group at 1, 3, and 5 years, respectively. Multivariable analysis showed that factors predicting poor survival included longer time on dialysis before retransplantation and decreased functional capacity. No survival difference was noted between recipients of deceased versus living donor kidneys. Patients who underwent retransplantation before initiating dialysis had better patient and graft survival. CONCLUSION Patients aged ≥70 achieve satisfactory outcomes following kidney retransplantation, highlighting that chronologic age should not preclude this medically complex population from this life-saving procedure. Improvement in functional status and timely retransplantation are the key factors to successful outcome.
Collapse
Affiliation(s)
- Lena Sibulesky
- Division of Transplant Surgery, Department of Surgery, University of Washington, Seattle, Washington, USA
- Clinical and Bio-Analytics Transplant Laboratory (CBATL), University of Washington, Seattle, Washington, USA
| | - Nicolae Leca
- Clinical and Bio-Analytics Transplant Laboratory (CBATL), University of Washington, Seattle, Washington, USA
- Division of Nephrology, Department of Medicine, University of Washington Medical Center, Seattle, Washington, USA
| | - Ramasamy Bakthavatsalam
- Division of Transplant Surgery, Department of Surgery, University of Washington, Seattle, Washington, USA
| | - James D Perkins
- Division of Transplant Surgery, Department of Surgery, University of Washington, Seattle, Washington, USA
- Clinical and Bio-Analytics Transplant Laboratory (CBATL), University of Washington, Seattle, Washington, USA
| |
Collapse
|
7
|
Bakthavatsalam A, Sibulesky L, Leca N, Rayhill SC, Bakthavatsalam R, Perkins JD. Impact of Obesity on Kidney Transplant Outcomes in Older Adults. Transplant Proc 2024; 56:58-67. [PMID: 38195283 DOI: 10.1016/j.transproceed.2023.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 11/30/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND The prevalence of obesity in older patients undergoing kidney transplantation is increasing. Older age and obesity are associated with higher risks of complications and mortality post-transplantation. The optimal management of this group of patients remains undefined. METHODS We retrospectively analyzed the United Network for Organ Sharing database of adults ≥70 years of age undergoing primary kidney transplant from January 1, 2014, to December 31, 2022. We examined patient and graft survival stratified by body mass index (BMI) in 3 categories, <30 kg/m2, 30 to 35 kg/m2, and >35 kg/m2. We also analyzed other risk factors that impacted survival. RESULTS A total of 14,786 patients ≥70 years underwent kidney transplantation. Of those, 9,731 patients had a BMI <30 kg/m2, 3,726 patients with a BMI of 30 to 35 kg/m2, and 1,036 patients with a BMI >35 kg/m2. During the study period, there was a significant increase in kidney transplants in patients ≥70 years old across all BMI groups. Overall, patient survival, death-censored graft survival, and all-cause graft survival were lower in obese patients compared with nonobese patients. Multivariable analysis showed worse patient survival and graft survival in patients with a BMI of 30 to 35 kg/m2, a BMI >35 kg/m2, a longer duration of dialysis, diabetes mellitus, and poor functional status. CONCLUSION Adults ≥70 years should be considered for kidney transplantation. Obesity with a BMI of 30 to 35 kg/m2 or >35 kg/m2, longer duration of dialysis, diabetes, and functional status are associated with worse outcomes. Optimization of these risk factors is essential when considering these patients for transplantation.
Collapse
Affiliation(s)
- Arvind Bakthavatsalam
- Department of Surgery, Vassar Brothers Medical Center, Nuvance Health, Poughkeepsie, New York
| | - Lena Sibulesky
- Division of Transplant Surgery, Department of Surgery, University of Washington, Seattle, Washington; Clinical and Bio-Analytics Transplant Laboratory, University of Washington, Seattle, Washington.
| | - Nicolae Leca
- Clinical and Bio-Analytics Transplant Laboratory, University of Washington, Seattle, Washington; Division of Nephrology, Department of Medicine, University of Washington Medical Center, Seattle, Washington
| | - Stephen C Rayhill
- Division of Transplant Surgery, Department of Surgery, University of Washington, Seattle, Washington
| | - Ramasamy Bakthavatsalam
- Division of Transplant Surgery, Department of Surgery, University of Washington, Seattle, Washington
| | - James D Perkins
- Division of Transplant Surgery, Department of Surgery, University of Washington, Seattle, Washington; Clinical and Bio-Analytics Transplant Laboratory, University of Washington, Seattle, Washington
| |
Collapse
|
8
|
Kim HJ, Min E, Yim SH, Choi MC, Kim HW, Yang J, Kim BS, Huh KH, Kim MS, Lee J. Clinical relevance of the living kidney donor profile index in Korean kidney transplant recipients. Clin Transplant 2024; 38:e15178. [PMID: 37922208 DOI: 10.1111/ctr.15178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 10/04/2023] [Accepted: 10/23/2023] [Indexed: 11/05/2023]
Abstract
BACKGROUND The Living Kidney Donor Profile Index (LKDPI) was developed in the United States to predict graft outcomes based on donor characteristics. However, there are significant differences in donor demographics, access to transplantation, proportion of ABO incompatibility, and posttransplant mortality in Asian countries compared with the United States. METHODS We evaluated the clinical relevance of the LKDPI score in a Korean kidney transplant cohort by analyzing 1860 patients who underwent kidney transplantation between 2000 and 2019. Patients were divided into three groups according to LKDPI score: <0, 1-19.9, and ≥20. RESULTS During a median follow-up of 119 months, 232 recipients (12.5%) experienced death-censored graft loss, and 98 recipients (5.3%) died. High LKDPI scores were significantly associated with increased risk of death-censored graft loss independent of recipient characteristics (LKDPI 1-19.9: HR 1.389, 95% CI 1.036-1.863; LKDPI ≥20: HR 2.121, 95% CI 1.50-2.998). High LKDPI score was also significantly associated with increased risk of biopsy-proven acute rejection and impaired graft renal function. By contrast, overall patient survival rates were comparable among the LKDPI groups. CONCLUSION High LKDPI scores were associated with an increased risk of death-censored graft loss, biopsy-proven acute rejection, and impaired graft renal function among a Korean kidney transplant cohort.
Collapse
Affiliation(s)
- Hyun Jeong Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eunki Min
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Hyuk Yim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Mun Chae Choi
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyung Woo Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jaeseok Yang
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Beom Seok Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyu Ha Huh
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Myoug Soo Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Juhan Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
9
|
Rana Magar R, Knight SR, Maggiore U, Lafranca JA, Dor FJMF, Pengel LHM. What are the benefits of preemptive versus non-preemptive kidney transplantation? A systematic review and meta-analysis. Transplant Rev (Orlando) 2023; 37:100798. [PMID: 37801855 DOI: 10.1016/j.trre.2023.100798] [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: 09/25/2023] [Accepted: 09/25/2023] [Indexed: 10/08/2023]
Abstract
Opting for a preemptive kidney transplant (PKT) can help avoid costs and morbidity associated with dialysis. However, while multiple studies have shown clinical benefits of PKT, other studies have not demonstrated this, leading to controversy in the literature regarding the exact benefits of PKT. Therefore, this study aimed to determine the clinical outcomes of PKT versus non-preemptive kidney transplantation (nPKT) in adult patients. Multiple databases were searched up to May 4, 2022. Independent reviewers selected studies for inclusion and extracted relevant data. Risk of bias was assessed using the Downs and Black checklist. Eighty-seven studies including 859,715 adult kidney transplant patients were included the review. The risk of patient death (relative risk [95% confidence interval] 0.74 [0.60-0.91]) was significantly lower in PKT versus nPKT patients for living donor (LD) transplants, whereas the risk of overall graft loss was significantly lower in PKT compared to nPKT patients for both LD (0.72 [0.62-0.83]) as well as deceased donor (DD) transplants (0.80 [0.69-0.92]). The evidence suggests that LD PKT patients have a lower risk of patient death and graft loss compared to nPKT patients, and DD PKT patients have a lower risk of graft loss than nPKT patients.
Collapse
Affiliation(s)
- Reshma Rana Magar
- Peter Morris Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Simon R Knight
- Peter Morris Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Umberto Maggiore
- Department of Medicine and Surgery, University of Parma, Nephrology Operating Unit, University Hospital, Parma, Italy
| | - Jeffrey A Lafranca
- Imperial College Renal and Transplant Centre, Hammersmith Hospital, London, United Kingdom
| | - Frank J M F Dor
- Imperial College Renal and Transplant Centre, Hammersmith Hospital, London, United Kingdom; Department of Surgery and Cancer, Imperial College, London, United Kingdom
| | - Liset H M Pengel
- Peter Morris Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom; Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, the Netherlands.
| |
Collapse
|
10
|
Husain SA, Hippen B, Singh N, Parsons RF, Bloom RD, Anand PM, Lentine KL. Right-Sizing Multiorgan Allocation Involving Kidneys. Clin J Am Soc Nephrol 2023; 18:1503-1506. [PMID: 37379084 PMCID: PMC10637446 DOI: 10.2215/cjn.0000000000000242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/21/2023] [Indexed: 06/29/2023]
Affiliation(s)
- S. Ali Husain
- Division of Nephrology, Department of Medicine, Columbia University Medical Center, New York, New York
| | - Benjamin Hippen
- Transplant Medicine and Emerging Capabilities, Fresenius Medical Care, Charlotte, North Carolina
| | - Neeraj Singh
- John C McDonald Regional Transplant Center, Willis Knighton Health System, Shreveport, Louisiana
| | - Ronald F. Parsons
- Department of Surgery, Emory Transplant Center, Emory University School of Medicine, Atlanta, Georgia
| | - Roy D. Bloom
- Renal Electrolyte and Hypertension Division, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Prince Mohan Anand
- Division of Nephrology, Medical University of South Carolina, Lancaster, South Carolina
| | - Krista L. Lentine
- Center for Abdominal Transplantation, SSM-Saint Louis University Hospital, Saint Louis, Missouri
| |
Collapse
|
11
|
Husain SA, Yu ME, King KL, Adler JT, Schold JD, Mohan S. Disparities in Kidney Transplant Waitlisting Among Young Patients Without Medical Comorbidities. JAMA Intern Med 2023; 183:1238-1246. [PMID: 37782509 PMCID: PMC10546295 DOI: 10.1001/jamainternmed.2023.5013] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 08/07/2023] [Indexed: 10/03/2023]
Abstract
Importance Disparities in kidney transplant referral and waitlisting contribute to disparities in kidney disease outcomes. Whether these differences are rooted in population differences in comorbidity burden is unclear. Objective To examine whether disparities in kidney transplant waitlisting were present among a young, relatively healthy cohort of patients unlikely to have medical contraindications to kidney transplant. Design, Setting, and Participants This retrospective cohort study used the US Renal Data System Registry to identify patients with end-stage kidney disease who initiated dialysis between January 1, 2005, and December 31, 2019. Patients who were older than 40 years, received a preemptive transplant, were preemptively waitlisted, or had documented medical comorbidities other than hypertension or smoking were excluded, yielding an analytic cohort of 52 902 patients. Data were analyzed between March 1, 2022, and February 1, 2023. Main Outcome(s) and Measure(s) Kidney transplant waitlisting after dialysis initiation. Results Of 52 902 patients (mean [SD] age, 31 [5] years; 31 132 [59%] male; 3547 [7%] Asian/Pacific Islander, 20 782 [39%] Black/African American, and 28 006 [53%] White) included in the analysis, 15 840 (30%) were waitlisted for a kidney transplant within 1 year of dialysis initiation, 11 122 (21%) were waitlisted between 1 and 5 years after dialysis initiation, and 25 940 (49%) were not waitlisted by 5 years. Patients waitlisted within 1 year of dialysis initiation were more likely to be male, to be White, to be employed full time, and to have had predialysis nephrology care. There were large state-level differences in the proportion of patients waitlisted within 1 year (median, 33%; range, 15%-58%). In competing risk regression, female sex (adjusted subhazard ratio [SHR], 0.92; 95% CI, 0.90-0.94), Hispanic ethnicity (SHR, 0.77; 95% CI, 0.75-0.80), and Black race (SHR, 0.66; 95% CI, 0.64-0.68) were all associated with lower waitlisting after dialysis initiation. Unemployment (SHR, 0.47; 95% CI, 0.45-0.48) and part-time employment (SHR, 0.74; 95% CI, 0.70-0.77) were associated with lower waitlisting compared with full-time employment, and more than 1 year of predialysis nephrology care, compared with none, was associated with greater waitlisting (SHR, 1.51; 95% CI, 1.46-1.56). Conclusions and Relevance This retrospective cohort study found that fewer than one-third of patients without major medical comorbidities were waitlisted for a kidney transplant within 1 year of dialysis initiation, with sociodemographic disparities in waitlisting even in this cohort of young, relatively healthy patients unlikely to have a medical contraindication to transplantation. Transplant policy changes are needed to increase transparency and address structural barriers to waitlist access.
Collapse
Affiliation(s)
- S. Ali Husain
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians & Surgeons, New York, New York
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York
| | - Miko E. Yu
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians & Surgeons, New York, New York
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York
| | - Kristen L. King
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians & Surgeons, New York, New York
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York
| | - Joel T. Adler
- Department of Surgery and Perioperative Care, Dell Medical School at the University of Texas at Austin, Austin
| | - Jesse D. Schold
- Department of Surgery, University of Colorado–Anschutz Medical Campus, Aurora
- Department of Epidemiology, School of Public Health, University of Colorado–Anschutz Medical Campus, Aurora
| | - Sumit Mohan
- Division of Nephrology, Department of Medicine, Columbia University College of Physicians & Surgeons, New York, New York
- The Columbia University Renal Epidemiology (CURE) Group, New York, New York
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
| |
Collapse
|
12
|
Moura AF, Moura-Neto JA, Requião-Moura LR, Pacheco-Silva Á. Preemptive kidney transplantation: why, when, and how? J Bras Nefrol 2023; 45:357-364. [PMID: 36179015 PMCID: PMC10697151 DOI: 10.1590/2175-8239-jbn-2022-0085en] [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: 05/12/2022] [Accepted: 07/21/2022] [Indexed: 11/22/2022] Open
Abstract
Among renal replacement therapies, preemptive kidney transplantation (PKT) presents the best clinical, social, and economic results. However, it is still infrequently chosen as first therapy for patients with irreversible kidney failure. Initiatives in different parts of the world were developed to identify the reasons why PKT is still not widely used and to facilitate the access of patients with end-stage kidney disease to the advantages associated with it. This article addresses the main advantages and difficulties of PKT and discusses when it should be indicated and how to prepare potential recipients for PKT.
Collapse
Affiliation(s)
- Ana Flávia Moura
- Escola Bahiana de Medicina e Saúde Pública, Departamento de Clínica
Médica, Salvador, BA, Brasil
| | - José A. Moura-Neto
- Escola Bahiana de Medicina e Saúde Pública, Departamento de Clínica
Médica, Salvador, BA, Brasil
| | - Lucio R. Requião-Moura
- Universidade Federal de São Paulo, Escola Paulista de Medicina,
Departamento de Medicina, Divisão de Nefrologia, São Paulo, SP, Brasil
| | - Álvaro Pacheco-Silva
- Universidade Federal de São Paulo, Escola Paulista de Medicina,
Departamento de Medicina, Divisão de Nefrologia, São Paulo, SP, Brasil
- Hospital Israelita Albert Einstein, Unidade de Transplante Renal,
São Paulo, SP, Brasil
| |
Collapse
|
13
|
Gadelkareem RA, Abdelgawad AM, Reda A, Azoz NM, Zarzour MA, Mohammed N, Hammouda HM, Khalil M. Preemptive living donor kidney transplantation: Access, fate, and review of the status in Egypt. World J Nephrol 2023; 12:40-55. [PMID: 37476008 PMCID: PMC10354566 DOI: 10.5527/wjn.v12.i3.40] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/22/2023] [Accepted: 03/14/2023] [Indexed: 05/19/2023] Open
Abstract
BACKGROUND Preemptive living donor kidney transplantation (PLDKT) is recommended as the optimal treatment for end-stage renal disease.
AIM To assess the rate of PLDKT among patients who accessed KT in our center and review the status of PLDKT in Egypt.
METHODS We performed a retrospective review of the patients who accessed KT in our center from November 2015 to November 2022. In addition, the PLDKT status in Egypt was reviewed relative to the literature.
RESULTS Of the 304 patients who accessed KT, 32 patients (10.5%) had preemptive access to KT (PAKT). The means of age and estimated glomerular filtration rate were 31.7 ± 13 years and 12.8 ± 3.5 mL/min/1.73 m2, respectively. Fifty-nine patients had KT, including 3 PLDKTs only (5.1% of total KTs and 9.4% of PAKT). Twenty-nine patients (90.6%) failed to receive PLDKT due to donor unavailability (25%), exclusion (28.6%), regression from donation (3.6%), and patient regression on starting dialysis (39.3%). In multivariate analysis, known primary kidney disease (P = 0.002), patient age (P = 0.031) and sex (P = 0.001) were independent predictors of achievement of KT in our center. However, PAKT was not significantly (P = 0.065) associated with the achievement of KT. Review of the literature revealed lower rates of PLDKT in Egypt than those in the literature.
CONCLUSION Patient age, sex, and primary kidney disease are independent predictors of achieving living donor KT. Despite its non-significant effect, PAKT may enhance the low rates of PLDKT. The main causes of non-achievement of PLDKT were patient regression on starting regular dialysis and donor unavailability or exclusion.
Collapse
Affiliation(s)
- Rabea Ahmed Gadelkareem
- Department of Urology, Assiut Urology and Nephrology Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Amr Mostafa Abdelgawad
- Department of Urology, Assiut Urology and Nephrology Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Ahmed Reda
- Department of Urology, Assiut Urology and Nephrology Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Nashwa Mostafa Azoz
- Department of Internal Medicine, Assiut University Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Mohammed Ali Zarzour
- Department of Urology, Assiut Urology and Nephrology Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Nasreldin Mohammed
- Department of Urology, Assiut Urology and Nephrology Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Hisham Mokhtar Hammouda
- Department of Urology, Assiut Urology and Nephrology Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Mahmoud Khalil
- Department of Urology, Assiut Urology and Nephrology Hospital, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| |
Collapse
|
14
|
Schold JD. The promise and reality of machine-learning models in kidney transplantation. Kidney Int 2023; 103:835-836. [PMID: 37085256 DOI: 10.1016/j.kint.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/15/2023] [Indexed: 04/23/2023]
Abstract
There have been numerous advances in statistical methods and computing technologies over the past decades, including the use of machine-learning models. In the current study, Truchot et al. rigorously evaluated the performance of different machine-learning models compared with traditional Cox proportional hazard models. Results of the study indicated that a Cox model had equivalent or superior performance than machine-learning models and can be relied on for predicting graft survival in kidney transplantation.
Collapse
Affiliation(s)
- Jesse D Schold
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
| |
Collapse
|
15
|
Kadatz MJ, Gill J, Gill J, Lan JH, McMichael LC, Chang DT, Gill JS. The Benefits of Preemptive Transplantation Using High-Kidney Donor Profile Index Kidneys. Clin J Am Soc Nephrol 2023; 18:634-643. [PMID: 37027505 PMCID: PMC10278842 DOI: 10.2215/cjn.0000000000000134] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 02/16/2023] [Indexed: 04/09/2023]
Abstract
BACKGROUND The Kidney Donor Profile Index (KDPI) is a percentile score summarizing the likelihood of allograft failure: A KDPI ≥85% is associated with shorter allograft survival, and 50% of these donated kidneys are not currently used for transplantation. Preemptive transplantation (transplantation without prior maintenance dialysis) is associated with longer allograft survival than transplantation after dialysis; however, it is unknown whether this benefit extends to high-KDPI transplants. The objective of this analysis was to determine whether the benefit of preemptive transplantation extends to recipients of transplants with a KDPI ≥85%. METHODS This retrospective cohort study compared the post-transplant outcomes of preemptive and nonpreemptive deceased donor kidney transplants using data from the Scientific Registry of Transplant Recipients. 120,091 patients who received their first, kidney-only transplant between January 1, 2005, and December 31, 2017, were studied, including 23,211 with KDPI ≥85%. Of this cohort, 12,331 patients received a transplant preemptively. Time-to-event models for the outcomes of allograft loss from any cause, death-censored graft loss, and death with a functioning transplant were performed. RESULTS Compared with recipients of nonpreemptive transplants with a KDPI of 0%-20% as the reference group, the risk of allograft loss from any cause in recipients of a preemptive transplant with KDPI ≥85% (hazard ratio [HR], 1.51; 95% confidence interval [CI], 1.39 to 1.64) was lower than that in recipients of nonpreemptive transplant with a KDPI ≥85% (HR, 2.39; 95% CI, 2.21 to 2.58) and similar to that of recipients of a nonpreemptive transplant with a KDPI of 51%-84% (HR, 1.61; 95% CI, 1.52 to 1.70). CONCLUSIONS Preemptive transplantation is associated with a lower risk of allograft failure, irrespective of KDPI, and preemptive transplants with KDPI ≥85% have comparable outcomes with nonpreemptive transplants with KDPI 51%-84%.
Collapse
Affiliation(s)
- Matthew J. Kadatz
- Kidney Transplant Program, Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
- Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Jagbir Gill
- Kidney Transplant Program, Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
- Providence Health Research Institute, Vancouver, British Columbia, Canada
- Centre for Health Evaluation and Outcomes Sciences, Vancouver, British Columbia, Canada
- School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - Justin Gill
- Kidney Transplant Program, Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
| | - James H. Lan
- Kidney Transplant Program, Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
- Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lachlan C. McMichael
- Kidney Transplant Program, Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Doris T. Chang
- Providence Health Research Institute, Vancouver, British Columbia, Canada
| | - John S. Gill
- Kidney Transplant Program, Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
- Providence Health Research Institute, Vancouver, British Columbia, Canada
- Centre for Health Evaluation and Outcomes Sciences, Vancouver, British Columbia, Canada
- Tufts-New England Medical Center, Boston, Massachusetts
| |
Collapse
|
16
|
Vock DM, Helgeson ES, Mullan AF, Issa NS, Sanka S, Saiki AC, Mathson K, Chamberlain AM, Rule AD, Matas AJ. The Minnesota attributable risk of kidney donation (MARKD) study: a retrospective cohort study of long-term (> 50 year) outcomes after kidney donation compared to well-matched healthy controls. BMC Nephrol 2023; 24:121. [PMID: 37127560 PMCID: PMC10152793 DOI: 10.1186/s12882-023-03149-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/01/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND There is uncertainty about the long-term risks of living kidney donation. Well-designed studies with controls well-matched on risk factors for kidney disease are needed to understand the attributable risks of kidney donation. METHODS The goal of the Minnesota Attributable Risk of Kidney Donation (MARKD) study is to compare the long-term (> 50 years) outcomes of living donors (LDs) to contemporary and geographically similar controls that are well-matched on health status. University of Minnesota (n = 4022; 1st transplant: 1963) and Mayo Clinic LDs (n = 3035; 1st transplant: 1963) will be matched to Rochester Epidemiology Project (REP) controls (approximately 4 controls to 1 donor) on the basis of age, sex, and race/ethnicity. The REP controls are a well-defined population, with detailed medical record data linked between all providers in Olmsted and surrounding counties, that come from the same geographic region and era (early 1960s to present) as the donors. Controls will be carefully selected to have health status acceptable for donation on the index date (date their matched donor donated). Further refinement of the control group will include confirmed kidney health (e.g., normal serum creatinine and/or no proteinuria) and matching (on index date) of body mass index, smoking history, family history of chronic kidney disease, and blood pressure. Outcomes will be ascertained from national registries (National Death Index and United States Renal Data System) and a new survey administered to both donors and controls; the data will be supplemented by prior surveys and medical record review of donors and REP controls. The outcomes to be compared are all-cause mortality, end-stage kidney disease, cardiovascular disease and mortality, estimated glomerular filtration rate (eGFR) trajectory and chronic kidney disease, pregnancy risks, and development of diseases that frequently lead to chronic kidney disease (e.g. hypertension, diabetes, and obesity). We will additionally evaluate whether the risk of donation differs based on baseline characteristics. DISCUSSION Our study will provide a comprehensive assessment of long-term living donor risk to inform candidate living donors, and to inform the follow-up and care of current living donors.
Collapse
Affiliation(s)
- David M Vock
- Division of Biostatistics, School of Public Health, University of Minnesota, 2221 University Ave SE, Room 200, Minneapolis, MN, 55414, USA
| | - Erika S Helgeson
- Division of Biostatistics, School of Public Health, University of Minnesota, 2221 University Ave SE, Room 200, Minneapolis, MN, 55414, USA.
| | - Aidan F Mullan
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
| | - Naim S Issa
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Sujana Sanka
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Alison C Saiki
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
| | - Kristin Mathson
- Surgery Clinical Trials Office, Department of Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Alanna M Chamberlain
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Andrew D Rule
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Arthur J Matas
- Division of Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN, USA
| |
Collapse
|
17
|
Kim I, Maggiore U, Knight SR, Rana Magar R, Pengel LHM, Dor FJMF. Pre-emptive living donor kidney transplantation: A public health justification to change the default. Front Public Health 2023; 11:1124453. [PMID: 37006536 PMCID: PMC10063978 DOI: 10.3389/fpubh.2023.1124453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/28/2023] [Indexed: 03/19/2023] Open
Affiliation(s)
- Isaac Kim
- Imperial College Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Umberto Maggiore
- Dipartimento di Medicina e Chirurgia, Università di Parma, Unità Operativa Nefrologia, Azienda Ospedaliera-Universitaria Parma, Parma, Italy
| | - Simon R. Knight
- Sir Peter Morris Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Reshma Rana Magar
- Sir Peter Morris Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Liset H. M. Pengel
- Sir Peter Morris Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Frank J. M. F. Dor
- Imperial College Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
- Department of Surgery and Cancer, Imperial College London, London, United Kingdom
- *Correspondence: Frank J. M. F. Dor
| |
Collapse
|
18
|
Buchalter RB, Huml AM, Poggio ED, Schold JD. Geographic hot spots of kidney transplant candidates wait-listed post-dialysis. Clin Transplant 2022; 36:e14821. [PMID: 36102154 PMCID: PMC10078213 DOI: 10.1111/ctr.14821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/16/2022] [Accepted: 09/09/2022] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Preemptive wait-listing of deceased donor kidney transplant (DDKT) candidates before maintenance dialysis increases the likelihood of transplantation and improves outcomes among transplant patients. Previous studies have identified substantial disparities in rates of preemptive listing, but a gap exists in examining geographic sources of disparities, particularly for sub-regional units. Identifying small area hot spots where delayed listing is particularly prevalent may more effectively inform both health policy and regionally appropriate interventions. METHODS We conducted a retrospective cohort study utilizing 2010-2020 Scientific Registry of Transplant Recipients (SRTR) data for all DDKT candidates to examine overall and race-stratified geospatial hot spots of post-dialysis wait-listing in U.S. zip code tabulation areas (ZCTA). Three geographic clustering methods were utilized to identify robust statistically significant hot spots of post-dialysis wait-listing. RESULTS Novel sub-regional hot spots were identified in the southeast, southwest, Appalachia, and California, with a majority existing in the southeast. Race-stratified results were more nuanced, but broadly reflected similar patterns. Comparing transplant candidates in hot spots to candidates in non-clusters indicated a strong association between residence in hot spots and high area deprivation (OR: 6.76, 95%CI: 6.52-7.02), indicating that improving access healthcare in these areas may be particularly beneficial. CONCLUSION Our study identified overall and race-stratified hot spots with low rates of preemptive wait list placement in the U.S., which may be useful for prospective healthcare policy and interventions via targeting of these narrowly defined geographical areas.
Collapse
Affiliation(s)
- R. Blake Buchalter
- Department of Quantitative Health Sciences, Lerner Research InstituteCleveland ClinicClevelandOhioUSA
- Center for Populations Health Research, Lerner Research InstituteCleveland ClinicClevelandOhioUSA
| | - Anne M. Huml
- Department of Kidney Medicine, Glickman Urological and Kidney InstituteCleveland ClinicClevelandOhioUSA
| | - Emilio D. Poggio
- Department of Kidney Medicine, Glickman Urological and Kidney InstituteCleveland ClinicClevelandOhioUSA
| | - Jesse D. Schold
- Department of Quantitative Health Sciences, Lerner Research InstituteCleveland ClinicClevelandOhioUSA
- Center for Populations Health Research, Lerner Research InstituteCleveland ClinicClevelandOhioUSA
| |
Collapse
|
19
|
Vaisbourd Y, Dahhou M, De Simone A, Zhang X, Foster BJ. Differences in medication adherence between preemptive and post-dialysis young kidney transplant recipients. Pediatr Nephrol 2022; 38:1949-1956. [PMID: 36357639 DOI: 10.1007/s00467-022-05797-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/11/2022] [Accepted: 10/18/2022] [Indexed: 11/12/2022]
Abstract
BACKGROUND The mechanisms underlying the superior graft survival associated with preemptive kidney transplantation, compared with transplantation following a period of dialysis, are unknown. We aimed to compare medication adherence between preemptively transplanted young kidney transplant recipients and those who received a transplant after an interval of dialysis. METHODS This was a secondary analysis of the Teen Adherence in Kidney transplant Effectiveness of Intervention Trial (TAKE-IT), in which adherence was assessed with electronic monitoring over 15 months among 11-24-year-old transplant recipients. Adherence scores were calculated for each day as 0%, 50%, or 100% (intake of none, half, or all prescribed doses). We used ordinal logistic regression, with generalized estimating equations to account for repeated measures within each participant, to estimate the association between preemptive transplantation and adherence. The model was adjusted for sex, age at transplant, time since transplant, primary kidney disease, race, donor source, medication insurer, household income, and adherence intervention. RESULTS There were 43 preemptive transplant recipients and 103 who had been treated with dialysis. The median adherence score was 85.1% (IQR 81.3-88.9) for those preemptively transplanted, and 80.0% (IQR 76.7-83.4) for those transplanted after dialysis. Preemptively transplanted recipients had significantly higher odds of adherence than those dialyzed before transplantation (adjusted OR 1.76 95% CI 1.21-2.55; p = 0.003). CONCLUSIONS Preemptively transplanted patients showed significantly better adherence than those treated with dialysis before transplantation. This suggests that the superior outcomes observed among preemptive kidney transplant recipients may reflect selection of patients more likely to adhere to therapy. A higher resolution version of the Graphical abstract is available as Supplementary information.
Collapse
Affiliation(s)
- Yulia Vaisbourd
- Department of Pediatrics, Montreal Children's Hospital, McGill University, 1001 Bd Décarie, QC, H4A 2L1, Montréal, Canada.
| | - Mourad Dahhou
- Research Institute of The McGill University Health Centre, Montreal, QC, Canada
| | - Alexia De Simone
- Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Xun Zhang
- Research Institute of The McGill University Health Centre, Montreal, QC, Canada
| | - Bethany J Foster
- Department of Pediatrics, Montreal Children's Hospital, McGill University, 1001 Bd Décarie, QC, H4A 2L1, Montréal, Canada.,Research Institute of The McGill University Health Centre, Montreal, QC, Canada.,Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| |
Collapse
|
20
|
Lim JH, Jeon Y, Kim DG, Kim YH, Kim JK, Yang J, Kim MS, Jung HY, Choi JY, Park SH, Kim CD, Kim YL, Cho JH. Effect of pretransplant dialysis vintage on clinical outcomes in deceased donor kidney transplant. Sci Rep 2022; 12:17614. [PMID: 36271226 PMCID: PMC9587225 DOI: 10.1038/s41598-022-20003-2] [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: 03/10/2022] [Accepted: 09/07/2022] [Indexed: 01/13/2023] Open
Abstract
The waiting time for deceased donor kidney transplants (DDKT) is increasing. We evaluated DDKT prognosis according to the pretransplant dialysis vintage. A total of 4117 first-time kidney transplant recipients were enrolled from a prospective nationwide cohort in Korea. DDKT recipients were divided into tertiles according to pretransplant dialysis duration. Graft failure, mortality, and composite were compared between DDKT and living donor kidney transplant (LDKT) recipients. Pretransplant dialysis vintage was longer annually in DDKT recipients. In the subdistribution of the hazard model for the competing risk, the first tertile did not show an increased risk of graft failure compared with LDKT recipients; however, the second and third tertile groups had an increased risk of graft failure compared to LDKT recipients (adjusted hazard ratio [aHR] 3.59; 95% confidence interval [CI] 1.69-7.63; P < 0.001; aHR 2.37; 95% CI 1.06-5.33; P = 0.037). All DDKT groups showed a significantly higher risk of patient death than LDKT, with the highest risk in the third tertile group (aHR 11.12; 95% CI 4.94-25.00; P < 0.001). A longer pretransplant dialysis period was associated with a higher risk of the composite of patient death and graft failure in DDKT recipients. DDKT after a short period of dialysis had non-inferior results on graft survival compared with LDKT.
Collapse
Affiliation(s)
- Jeong-Hoon Lim
- grid.411235.00000 0004 0647 192XDepartment of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944 South Korea
| | - Yena Jeon
- grid.258803.40000 0001 0661 1556Department of Statistics, Kyungpook National University, Daegu, South Korea
| | - Deok Gie Kim
- grid.464718.80000 0004 0647 3124Department of Surgery, Yonsei University Wonju College of Medicine, Wonju Severance Christian Hospital, Wonju, South Korea
| | - Yeong Hoon Kim
- grid.411625.50000 0004 0647 1102Department of Internal Medicine, Inje University Busan Paik Hospital, Busan, South Korea
| | - Joong Kyung Kim
- grid.414550.10000 0004 0647 985XDepartment of Internal Medicine, Bongseng Memorial Hospital, Busan, South Korea
| | - Jaeseok Yang
- grid.15444.300000 0004 0470 5454Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Myoung Soo Kim
- grid.15444.300000 0004 0470 5454Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Hee-Yeon Jung
- grid.411235.00000 0004 0647 192XDepartment of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944 South Korea
| | - Ji-Young Choi
- grid.411235.00000 0004 0647 192XDepartment of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944 South Korea
| | - Sun-Hee Park
- grid.411235.00000 0004 0647 192XDepartment of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944 South Korea
| | - Chan-Duck Kim
- grid.411235.00000 0004 0647 192XDepartment of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944 South Korea
| | - Yong-Lim Kim
- grid.411235.00000 0004 0647 192XDepartment of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944 South Korea
| | - Jang-Hee Cho
- grid.411235.00000 0004 0647 192XDepartment of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944 South Korea
| | | |
Collapse
|
21
|
Impact of nephrology care trajectories pre-CKD stage 5 on initiation of kidney replacement therapy in children. Pediatr Nephrol 2022; 37:2427-2436. [PMID: 35146540 DOI: 10.1007/s00467-022-05467-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND To improve pre-emptive kidney transplantation (PKT) in children and limit starting dialysis in an emergency, we aimed to describe nephrology care trajectories pre-CKD stage 5. METHODS We included all children in France who, between 2010 and 2016, started kidney replacement therapy (KRT): standard dialysis (reference group) and emergency dialysis or PKT. We identified four pre-CKD stage 5 nephrology care trajectories before KRT that were extracted from the national exhaustive medical-administrative database and used logistic regression to explore associations between patient characteristics, care trajectories, and KRT initiation. RESULTS Six hundred forty-three pediatric patients started KRT in France; 406 started dialysis and 30.5% emergency dialysis. The "optimal" care trajectory encompassed 179 patients, 82.7% with at least 18 months nephrology follow-up. Conversely, the "no care" trajectory encompassed 118 patients with no nephrology follow-up before KRT. The "severe" trajectory encompassed 128 patients; 93% hospitalized more than once a year and 18% in an intensive care unit. Finally, the "irregular" trajectory encompassed 127 patients, 77% and 46% with irregular laboratory monitoring and CKD drug delivery, respectively. With the "optimal" trajectory as the reference, probability of emergency dialysis was higher with the "irregular" and "no care" trajectories (odds ratio 3.02 [95% confidence interval 1.18-7.66] and 26.5 [10.8-64.8], respectively), and PKT was reduced with the "severe" trajectory (0.43 [0.23-0.82]). CONCLUSION We identified a group of patients with irregular follow-up who may benefit the most from interventions aiming at improving adherence to treatment and earlier diagnosis of their CKD to improve access to PKT. A higher resolution version of the Graphical abstract is available as Supplementary information.
Collapse
|
22
|
Moura AF, Moura-Neto JA, Requião-Moura LR, Pacheco-Silva Á. Transplante renal preemptivo: por que, quando e como? J Bras Nefrol 2022. [DOI: 10.1590/2175-8239-jbn-2022-0085pt] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo Entre as terapias renais substitutivas, o transplante renal preemptivo (TRP) apresenta os melhores resultados clínicos, sociais e econômicos. No entanto, ainda é raramente escolhido como primeira terapia para pacientes com falência renal irreversível. Foram desenvolvidas iniciativas em diferentes partes do mundo para identificar as razões pelas quais o TRP ainda não é amplamente utilizado e para facilitar o acesso de pacientes com doença renal em estágio terminal às vantagens associadas ao mesmo. Este artigo aborda as principais vantagens e dificuldades do TRP e discute quando ele deve ser indicado e como preparar potenciais receptores para o TRP.
Collapse
Affiliation(s)
| | | | | | - Álvaro Pacheco-Silva
- Universidade Federal de São Paulo, Brasil; Hospital Israelita Albert Einstein, Brasil
| |
Collapse
|
23
|
Wazir S, Abbas M, Ratanasrimetha P, Zhang C, Hariharan S, Puttarajappa CM. Preoperative blood pressure and risk of delayed graft function in deceased donor kidney transplantation. Clin Transplant 2022; 36:e14776. [PMID: 35821617 DOI: 10.1111/ctr.14776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 05/05/2022] [Accepted: 07/08/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND In kidney transplantation, delayed graft function (DGF) is associated with increased morbidity and a higher risk of graft failure. Prior research suggests that chronic hypotension increases DGF risk, but the relationship of preoperative blood pressure to DGF is unclear. METHODS In this single center study of adult deceased donor kidney transplant recipients transplanted between 2015 and 2019, we evaluated the question of whether preoperative mean arterial pressure (MAP) affected DGF risk. Additionally, we investigated whether the risk of DGF was moderated by certain donor and recipient characteristics. For recipient characteristics associated with increased DGF risk and preoperative MAP, we performed a mediation analysis to estimate the proportion of DGF risk mediated through preoperative MAP. RESULTS Among 562 deceased donor kidney recipients, DGF risk decreased as preoperative MAP increased, with a 2% lower risk per 1 mm Hg increase in MAP. This increased risk was similar, with no statistically significant interaction effect between preoperative MAP and donor (donation after circulatory death) and recipient characteristics (diabetes, body mass index, and use of anti-hypertensive medications). Preoperative MAP was negativity correlated with recipient BMI and duration of pre transplant dialysis. On mediation analysis, MAP accounted for 12% and 16% of the DGF risk associated with recipient BMI and pre-transplant dialysis duration, respectively. CONCLUSION In deceased donor kidney transplantation, each 1 mm Hg increase in preoperative MAP was associated with 2% lower DGF risk. Preoperative MAP was influenced by recipient BMI and dialysis duration, and likely contributes to some of the high DGF risk from obesity and long dialysis vintage.
Collapse
Affiliation(s)
- Shoaib Wazir
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Muhammad Abbas
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Praveen Ratanasrimetha
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Casey Zhang
- School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Sundaram Hariharan
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Chethan M Puttarajappa
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| |
Collapse
|
24
|
Visser A, Alma MA, Bakker SJL, Bemelman FJ, Berger SP, van der Boog PJM, Brouwer S, Hilbrands LB, Standaar DSM, Stewart RE, Gansevoort RT. Employment and ability to work after kidney transplantation in the Netherlands: The impact of preemptive versus non-preemptive kidney transplantation. Clin Transplant 2022; 36:e14757. [PMID: 35716362 PMCID: PMC9788192 DOI: 10.1111/ctr.14757] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/14/2022] [Accepted: 06/11/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Work can have a major positive impact on health and wellbeing. Employment of kidney transplant recipients (KTR) of working age is much lower than in the general population. The first aim of this study was to examine the impact of a preemptive kidney transplantation (PKT) on employment, in addition to other possible influencing factors. The second aim was to explore differences in work ability, absenteeism and work performance among employed KTR with different types of transplantations. METHODS A cross-sectional survey study was conducted between 2018 and 2019 in nine Dutch hospitals. PKT as potential predictor of employment was examined. Furthermore, work ability, absenteeism and loss of work performance were compared between employed preemptive recipients with a living donor (L-PKT) and non-preemptive recipients with a living donor (L-nPKT) and with a deceased donor (D-nPKT). RESULTS Two hundred and twenty four KTR participated; 71% reported having paid work. Paid work was more common among PKT recipients (82% vs. 65% in L-nPKT and 55% in D-nPKT) and recipients who were younger (OR .950, 95%CI .913-.989), had no comorbidities (1 comorbidity: OR .397, 95%CI .167-.942; 2 comorbidities: OR .347, 95%CI .142-.844), had less fatigue (OR .974, 95%CI .962-.987) and had mentally demanding work tasks (only in comparison with physically demanding tasks, OR .342, 95%CI .145-.806). If recipients were employed, D-nPKT recipients worked fewer hours (mean 24.6±11.3 vs. PKT 31.1±9.6, L-nPKT 30.1±9.5) and D-nPKT and L-nPKT recipients received more often supplemental disability benefits (32 and 33.3%, respectively) compared to PKT recipients (9.9%). No differences were found for self-reported ability to work, sick leave (absenteeism) and loss of work performance with the exception of limitations in functioning at work. CONCLUSIONS Preemptive kidney transplantation recipients with a kidney from a living donor are employed more often, work more hours per week (only in comparison with D-nPKT) and have a partial disability benefit less often than nPKT recipients. More knowledge regarding treatments supporting sustainable participation in the labor force is needed as work has a positive impact on recipients' health and wellbeing and is also beneficial for society as a whole.
Collapse
Affiliation(s)
- Annemieke Visser
- Department of Applied Health ResearchHealth SciencesUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Manna A. Alma
- Department of Applied Health ResearchHealth SciencesUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Stephan J. L. Bakker
- Department of NephrologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Frederike J. Bemelman
- Department of NephrologyUniversity of Amsterdam's Faculty of MedicineAmsterdamThe Netherlands
| | - Stefan P. Berger
- Department of NephrologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | | | - Sandra Brouwer
- Department of Health Sciences, Community and Occupational MedicineUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Luuk B. Hilbrands
- Department of NephrologyRadboud University Medical CenterNijmegenThe Netherlands
| | - Dorien S. M. Standaar
- Department of NephrologyUniversity of Amsterdam's Faculty of MedicineAmsterdamThe Netherlands
| | - Roy E. Stewart
- Department of Health Sciences, Community and Occupational MedicineUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Ron T. Gansevoort
- Department of NephrologyUniversity Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| |
Collapse
|
25
|
Phongphithakchai A, Phisalprapa P, Kositamongkol C, Premasathian N, Larpparisuth N, Skulratanasak P, Vongwiwatana A. Preemptive Living-Related Kidney Transplantation Is a Cost-Saving Strategy Compared With Post-dialysis Kidney Transplantation in Thailand. Front Med (Lausanne) 2022; 9:869535. [PMID: 35872779 PMCID: PMC9304573 DOI: 10.3389/fmed.2022.869535] [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: 02/04/2022] [Accepted: 06/21/2022] [Indexed: 11/13/2022] Open
Abstract
Background Compared with other kidney replacement therapies, preemptive kidney transplantation (KT) provides better clinical outcomes, reduces mortality, and improves the quality of life of patients with end-stage kidney disease (ESKD). However, evidence related to the cost-effectiveness of preemptive living-related KT (LRKT) is limited, especially in low- and middle-income countries, such as Thailand. This study compared the cost-effectiveness of LRKT with those of non-preemptive KT strategies. Methods Cost and clinical data were obtained from adult patients who underwent KT at Siriraj Hospital, Mahidol University, Thailand. A decision tree and Markov model were used to evaluate and compare the lifetime costs and health-related outcomes of LRKT with those of 2 KT strategies: non-preemptive LRKT and non-preemptive deceased donor KT (DDKT). The model’s input parameters were sourced from the hospital’s database and a systematic review. The primary outcome was incremental cost-effectiveness ratios (ICERs). Costs are reported in 2020 United States dollars (USD). One-way and probabilistic sensitivity analyses were performed. Results Of 140 enrolled KT patients, 40 were preemptive LRKT recipients, 50 were non-preemptive LRKT recipients, and the rest were DDKT recipients. There were no significant differences in the baseline demographic data, complications, or rejection rates of the three groups of patients. The average costs per life year gained were $10,647 (preemptive LRKT), $11,708 (non-preemptive LRKT), and $11,486 (DDKT). The QALY gained of the preemptive option was 0.47 compared with the non-preemptive strategies. Preemptive LRKT was the best-buy strategy. The sensitivity analyses indicated that the model was robust. Within all varied ranges of parameters, preemptive LRKT remained cost-saving. The probability of preemptive LRKT being cost-saving was 79.4%. Compared with non-preemptive DDKT, non-preemptive LRKT was not cost-effective at the current Thai willingness-to-pay threshold of $5113/QALY gained. Conclusions Preemptive LRKT is a cost-saving strategy compared with non-preemptive KT strategies. Our findings should be considered during evidence-based policy development to promote preemptive LRKT among adults with ESKD in Thailand.
Collapse
Affiliation(s)
- Atthaphong Phongphithakchai
- Division of Nephrology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Division of Nephrology, Department of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand
| | - Pochamana Phisalprapa
- Division of Ambulatory Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chayanis Kositamongkol
- Division of Ambulatory Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nalinee Premasathian
- Division of Nephrology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nuttasith Larpparisuth
- Division of Nephrology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Peenida Skulratanasak
- Division of Nephrology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Attapong Vongwiwatana
- Division of Nephrology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- *Correspondence: Attapong Vongwiwatana,
| |
Collapse
|
26
|
Kidney Retransplantation after Graft Failure: Variables Influencing Long-Term Survival. J Transplant 2022; 2022:3397751. [PMID: 35782455 PMCID: PMC9242806 DOI: 10.1155/2022/3397751] [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: 05/11/2022] [Accepted: 06/13/2022] [Indexed: 12/02/2022] Open
Abstract
Background There is an increasing demand for kidney retransplantation. Most studies report inferior outcomes compared to primary transplantation, consequently feeding an ethical dilemma in the context of chronic organ shortage. Objective To assess variables influencing long-term graft survival after kidney retransplantation. Material and Methods. All patients transplanted at our center between 2000 and 2016 were analyzed retrospectively. Survival was estimated with the Kaplan–Meier method, and risk factors were identified using multiple Cox regression. Results We performed 1,376 primary kidney transplantations and 222 retransplantations. The rate of retransplantation was 67.8% after the first graft loss, with a comparable 10-year graft survival compared to primary transplantation (67% vs. 64%, p=0.104) but an inferior graft survival thereafter (log-rank p=0.026). Independent risk factors for graft survival in retransplantation were age ≥ 50 years, time on dialysis ≥1 year, previous graft survival <2 years, ≥1 mild comorbidity in the Charlson–Deyo index, active smoking, and life-threatening complications (Clavien–Dindo grade IV) at first transplantation. Conclusion Graft survival is comparable for first and second kidney transplantation within the first 10 years. Risk factors for poor outcomes after retransplantation are previous graft survival, dialysis time after graft failure, recipient age, comorbidities, and smoking. Patients with transplant failure should have access to retransplantation as early as possible.
Collapse
|
27
|
Husain SA, King KL, Cron DC, Neidlinger NA, Ng H, Mohan S, Adler JT. Association of transplant center market concentration and local organ availability with deceased donor kidney utilization. Am J Transplant 2022; 22:1603-1613. [PMID: 35213789 PMCID: PMC9177771 DOI: 10.1111/ajt.17010] [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] [Received: 11/15/2021] [Revised: 01/30/2022] [Accepted: 02/20/2022] [Indexed: 01/25/2023]
Abstract
Although there is a shortage of kidneys available for transplantation, many transplantable kidneys are not procured or are discarded after procurement. We investigated whether local market competition and/or organ availability impact kidney procurement/utilization. We calculated the Herfindahl-Hirschman Index (HHI) for deceased donor kidney transplants (2015-2019) for 58 US donation service areas (DSAs) and defined 4 groups: HHI ≤ 0.32 (high competition), HHI = 0.33-0.51 (medium), HHI = 0.53-0.99 (low), and HHI = 1 (monopoly). We calculated organ availability for each DSA as the number kidneys procured per incident waitlisted candidate, grouped as: <0.42, 0.42-0.69, >0.69. Characteristics of procured organs were similar across groups. In adjusted logistic regression, the HHI group was inconsistently associated with composite export/discard (reference: high competition; medium: OR 1.16, 95% CI 1.11-1.20; low 1.01, 0.96-1.06; monopoly 1.19, 1.13-1.26) and increasing organ availability was associated with export/discard (reference: availability <0.42; 0.42-0.69: OR 1.35, 95% CI 1.30-1.40; >0.69: OR 1.83, 95% CI 1.73-1.93). When analyzing each endpoint separately, lower competition was associated with higher export and only market monopoly was weakly associated with lower discard, whereas higher organ availability was associated with export and discard. These results indicate that local organ utilization is more strongly influenced by the relative intensity of the organ shortage than by market competition between centers.
Collapse
Affiliation(s)
- Syed A. Husain
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York,The Columbia University Renal Epidemiology (CURE) Group, New York, New York
| | - Kristen L. King
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York,The Columbia University Renal Epidemiology (CURE) Group, New York, New York
| | - David C. Cron
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts
| | | | - Han Ng
- Department of Economics, Pennsylvania State University, State College, Pennsylvania
| | - Sumit Mohan
- Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, New York,The Columbia University Renal Epidemiology (CURE) Group, New York, New York,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
| | - Joel T. Adler
- Department of Surgery and Perioperative Care, Dell Medical School at the University of Texas at Austin, Austin, Texas
| |
Collapse
|
28
|
Chen HH, Chern YB, Hsu CY, Tang PL, Lai CC. Kidney transplantation waiting times and risk of cardiovascular events and mortality: a retrospective observational cohort study in Taiwan. BMJ Open 2022; 12:e058033. [PMID: 35613763 PMCID: PMC9131177 DOI: 10.1136/bmjopen-2021-058033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES Patients with end-stage renal disease (ESRD) are at a high risk of cardiovascular events (CVEs), and kidney transplantation (KT) has been reported to improve risk of CVEs and survival. As the association of KT timing on long-term survival and clinical outcomes remains unclear, we investigated the association of different KT waiting times with clinical outcomes. DESIGN Retrospective observational cohort study. SETTING We conducted an observational cohort study using data from the National Health Insurance Research Database in Taiwan. Adult patients who initiated KT therapy from 1997 to 2013 were included. PARTICIPANTS A total of 3562 adult patients who initiated uncomplicated KT therapy were included and categorised into four groups according to KT waiting times after ESRD: group 1 (<1 year), group 2 (1-3 years), group 3 (3-6 years) and group 4 (>6 years). PRIMARY OUTCOME MEASURES The main outcomes were composite of all-cause death, non-fatal myocardial infarction or non-fatal stroke, based on the primary diagnosis in medical records during hospitalisation. RESULTS Compared with group 1, the adjusted risk of primary outcome events (all-cause death, non-fatal myocardial infarction or non-fatal stroke) increased by 1.67 times in group 2 (95% CI: 1.40 to 2.00; p<0.001), 2.17 times in group 3 (95% CI: 1.73 to 2.71; p<0.001) and 3.10 times in group 4 (95% CI: 2.21 to 4.35; p<0.001). The rates of primary outcome events were 6.7%, 13.4% and 14.0% within 5 years, increasing to 19.5%, 26.3% and 30.8% within 10 years in groups 1, 2 and 3, respectively. CONCLUSIONS Our results demonstrate that early KT is associated with superior long-term cardiovascular outcomes compared with late KT in selected patients with ESRD receiving uncomplicated KT, suggesting that an early KT could be a better treatment option for patients with ESRD who are eligible for transplantation.
Collapse
Affiliation(s)
- Hsin-Hung Chen
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Yahn-Bor Chern
- Division of Nephrology, Department of Medicine, E-DA Hospital, Kaohsiung, Taiwan
- School of medicine, College of medicine, I-Shou University, Kaohsiung, Taiwan
| | - Chih-Yang Hsu
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Pei-Ling Tang
- Research Center of Medical Informatics, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
- College of Nursing, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chi-Cheng Lai
- Department of Cardiology, Kaohsiung Municipal United Hospital, Kaohsiung, Taiwan
| |
Collapse
|
29
|
Thongprayoon C, Vaitla P, Jadlowiec CC, Leeaphorn N, Mao SA, Mao MA, Pattharanitima P, Bruminhent J, Khoury NJ, Garovic VD, Cooper M, Cheungpasitporn W. Use of Machine Learning Consensus Clustering to Identify Distinct Subtypes of Black Kidney Transplant Recipients and Associated Outcomes. JAMA Surg 2022; 157:e221286. [PMID: 35507356 PMCID: PMC9069346 DOI: 10.1001/jamasurg.2022.1286] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Importance Among kidney transplant recipients, Black patients continue to have worse graft function and reduced patient and graft survival. Better understanding of different phenotypes and subgroups of Black kidney transplant recipients may help the transplant community to identify individualized strategies to improve outcomes among these vulnerable groups. Objective To cluster Black kidney transplant recipients in the US using an unsupervised machine learning approach. Design, Setting, and Participants This cohort study performed consensus cluster analysis based on recipient-, donor-, and transplant-related characteristics in Black kidney transplant recipients in the US from January 1, 2015, to December 31, 2019, in the Organ Procurement and Transplantation Network/United Network for Organ Sharing database. Each cluster's key characteristics were identified using the standardized mean difference, and subsequently the posttransplant outcomes were compared among the clusters. Data were analyzed from June 9 to July 17, 2021. Exposure Machine learning consensus clustering approach. Main Outcomes and Measures Death-censored graft failure, patient death within 3 years after kidney transplant, and allograft rejection within 1 year after kidney transplant. Results Consensus cluster analysis was performed for 22 687 Black kidney transplant recipients (mean [SD] age, 51.4 [12.6] years; 13 635 men [60%]), and 4 distinct clusters that best represented their clinical characteristics were identified. Cluster 1 was characterized by highly sensitized recipients of deceased donor kidney retransplants; cluster 2, by recipients of living donor kidney transplants with no or short prior dialysis; cluster 3, by young recipients with hypertension and without diabetes who received young deceased donor transplants with low kidney donor profile index scores; and cluster 4, by older recipients with diabetes who received kidneys from older donors with high kidney donor profile index scores and extended criteria donors. Cluster 2 had the most favorable outcomes in terms of death-censored graft failure, patient death, and allograft rejection. Compared with cluster 2, all other clusters had a higher risk of death-censored graft failure and death. Higher risk for rejection was found in clusters 1 and 3, but not cluster 4. Conclusions and Relevance In this cohort study using an unsupervised machine learning approach, the identification of clinically distinct clusters among Black kidney transplant recipients underscores the need for individualized care strategies to improve outcomes among vulnerable patient groups.
Collapse
Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Pradeep Vaitla
- Division of Nephrology, University of Mississippi Medical Center, Jackson
| | | | - Napat Leeaphorn
- Renal Transplant Program, University of Missouri-Kansas City School of Medicine, Saint Luke's Health System
| | - Shennen A Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, Florida
| | - Michael A Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, Florida
| | | | - Jackrapong Bruminhent
- Ramathibodi Excellence Center for Organ Transplantation, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Division of Infectious Diseases, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Nadeen J Khoury
- Department of Nephrology, Department of Medicine, Henry Ford Hospital, Detroit, Michigan
| | - Vesna D Garovic
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | | | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
30
|
Lai M, Gao Y, Tavakol M, Freise C, Lee BK, Park M. Pretransplant Dialysis and Preemptive Transplant in Living Donor Kidney Recipients. KIDNEY360 2022; 3:1080-1088. [PMID: 35845334 PMCID: PMC9255866 DOI: 10.34067/kid.0007652021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 04/07/2022] [Indexed: 01/10/2023]
Abstract
Background The optimal timing of dialysis access placement in individuals with stage 5 CKD is challenging to estimate. Preemptive living donor kidney transplant (LDKT) is the gold-standard treatment for ESKD due to superior graft survival and mortality, but dialysis initiation is often required. Among LDKT recipients, we sought to determine which clinical characteristics were associated with preemptive transplant. Among non-preemptive LDKT recipients, we sought to determine what dialysis access was used, and their duration of use before receipt of living donor transplant. Methods We retrospectively extracted data on 569 LDKT recipients, >18 years old, who were transplanted between January 2014 and July 2019 at UCSF, including dialysis access type (arteriovenous fistula [AVF], arteriovenous graft [AVG], peritoneal dialysis catheter [PD], and venous catheter), duration of dialysis, and clinical characteristics. Results Preemptive LDKT recipients constituted 30% of our cohort and were older, more likely to be White, more likely to have ESKD from polycystic kidney disease, and less likely to have ESKD from type 2 diabetes. Of the non-preemptive patients, 26% used AVF, 0.5% used AVG, 32% used peritoneal catheter, 11% used venous catheter, and 31% used more than one access type. Median (IQR) time on dialysis for AVF/AVG use was 1.86 (0.85-3.32) years; for PD catheters, 1.12 (0.55-1.92) years; for venous catheters, 0.66 (0.23-1.69) years; and for multimodal access, 2.15 (1.37-3.72) years. Conclusions We characterized the dialysis access landscape in LDKT recipients. Venous catheter and PD were the most popular modality in the first quartile of dialysis, and patients using these modalities had shorter times on dialysis compared with those with an AVF. Venous catheter or PD can be considered a viable bridge therapy in patients with living donor availability given their shorter waitlist times. Earlier referral of patients with living donor prospects might further minimize dialysis need.
Collapse
Affiliation(s)
- Mason Lai
- School of Medicine, University of California San Francisco, San Francisco, California
| | - Ying Gao
- Division of Nephrology, Department of Medicine, University of California San Francisco, San Francisco, California
| | - Mehdi Tavakol
- Department of Surgery, University of California San Francisco, San Francisco, California
| | - Chris Freise
- Department of Surgery, University of California San Francisco, San Francisco, California
| | - Brian K. Lee
- Department of Internal Medicine, Dell Seton Medical Center, University of Texas at Austin, Austin, Texas
| | - Meyeon Park
- Division of Nephrology, Department of Medicine, University of California San Francisco, San Francisco, California
| |
Collapse
|
31
|
Oomen L, Bootsma-Robroeks C, Cornelissen E, de Wall L, Feitz W. Pearls and Pitfalls in Pediatric Kidney Transplantation After 5 Decades. Front Pediatr 2022; 10:856630. [PMID: 35463874 PMCID: PMC9024248 DOI: 10.3389/fped.2022.856630] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/15/2022] [Indexed: 11/13/2022] Open
Abstract
Worldwide, over 1,300 pediatric kidney transplantations are performed every year. Since the first transplantation in 1959, healthcare has evolved dramatically. Pre-emptive transplantations with grafts from living donors have become more common. Despite a subsequent improvement in graft survival, there are still challenges to face. This study attempts to summarize how our understanding of pediatric kidney transplantation has developed and improved since its beginnings, whilst also highlighting those areas where future research should concentrate in order to help resolve as yet unanswered questions. Existing literature was compared to our own data of 411 single-center pediatric kidney transplantations between 1968 and 2020, in order to find discrepancies and allow identification of future challenges. Important issues for future care are innovations in immunosuppressive medication, improving medication adherence, careful donor selection with regard to characteristics of both donor and recipient, improvement of surgical techniques and increased attention for lower urinary tract dysfunction and voiding behavior in all patients.
Collapse
Affiliation(s)
- Loes Oomen
- Division of Pediatric Urology, Department of Urology, Radboudumc Amalia Children's Hospital, Nijmegen, Netherlands
| | - Charlotte Bootsma-Robroeks
- Department of Pediatric Nephrology, Radboudumc Amalia Children's Hospital, Nijmegen, Netherlands
- Department of Pediatrics, Pediatric Nephrology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Elisabeth Cornelissen
- Department of Pediatric Nephrology, Radboudumc Amalia Children's Hospital, Nijmegen, Netherlands
| | - Liesbeth de Wall
- Division of Pediatric Urology, Department of Urology, Radboudumc Amalia Children's Hospital, Nijmegen, Netherlands
| | - Wout Feitz
- Division of Pediatric Urology, Department of Urology, Radboudumc Amalia Children's Hospital, Nijmegen, Netherlands
| |
Collapse
|
32
|
Preemptive renal transplant: too early is not always better—a national cohort study. Int Urol Nephrol 2022; 54:2025-2035. [DOI: 10.1007/s11255-021-03086-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
|
33
|
Tsai SF, Lin MH, Hsu CC, Wu MJ, Wang IK, Chen CH. Trends of kidney transplantation from the 2020 annual report on kidney disease in Taiwan. J Formos Med Assoc 2022; 121 Suppl 1:S20-S29. [DOI: 10.1016/j.jfma.2021.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/06/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
|
34
|
Nishimura N, Hori S, Tomizawa M, Yoneda T, Nakai Y, Miyake M, Torimoto K, Tanaka N, Fujimoto K. Relevance of the perioperative edema index measured by bioelectrical impedance analysis for prediction of cardiovascular disease in living-donor kidney transplantation. Int J Urol 2022; 29:309-316. [PMID: 34973157 DOI: 10.1111/iju.14772] [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: 08/23/2021] [Accepted: 12/01/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Perioperative management of fluid status during kidney transplantation is important, because volume overload can increase the risk of cardiovascular disease in recipients. The edema index calculated by bioelectrical impedance analysis is commonly used to correctly evaluate fluid status. We evaluated the relevance of the edema index for cardiovascular disease in kidney transplant recipients, and searched for predictors of high edema index in the perioperative period during kidney transplantation. METHODS A total of 88 recipients were included in this study. The group in which the edema index at discharge was >0.40 was termed as the "high edema index group", and that with ≤0.40 was termed as the "low edema index group". We assessed cardiovascular disease-free survival and cardiovascular disease-specific survival in the two groups by using Cox proportional regression analyses adjusted by inverse probability of treatment weighting analysis. The patients' background and conventional cardiovascular disease risk factors were assessed to estimate predictors for a high edema index. RESULTS A high edema index was significantly associated with short cardiovascular disease-free survival after kidney transplantation (hazard ratio 10.01; P < 0.05) in the inverse probability of treatment weighting model. There were no significant differences in the cardiovascular disease-specific survival. In multivariate logistic regression analyses, non-pre-emptive kidney transplantation and dyslipidemia were significant independent predictors of a high edema index (odds ratio 3.59, P < 0.05 and odds ratio 4.05, P < 0.01, respectively). CONCLUSIONS A high edema index is associated with the incidence of cardiovascular disease. Overhydration should be especially avoided in recipients with these factors, and their fluid volume should be carefully managed.
Collapse
Affiliation(s)
| | - Shunta Hori
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| | - Mitsuru Tomizawa
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| | - Tatsuo Yoneda
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| | - Yasushi Nakai
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| | - Makito Miyake
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| | - Kazumasa Torimoto
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| | - Nobumichi Tanaka
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| | - Kiyohide Fujimoto
- Department of Urology, Nara Medical University, Kashihara, Nara, Japan
| |
Collapse
|
35
|
Dirix M, Philipse E, Vleut R, Hartman V, Bracke B, Chapelle T, Roeyen G, Ysebaert D, Van Beeumen G, Snelders E, Massart A, Leyssens K, Couttenye MM, Abramowicz D, Hellemans R. OUP accepted manuscript. Clin Kidney J 2022; 15:1100-1108. [PMID: 35664264 PMCID: PMC9155241 DOI: 10.1093/ckj/sfac006] [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: 08/05/2021] [Indexed: 11/15/2022] Open
Affiliation(s)
| | - Ester Philipse
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Laboratory of Experimental Medicine and Paediatrics, University of Antwerp, Antwerp, Belgium
| | - Rowena Vleut
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Laboratory of Experimental Medicine and Paediatrics, University of Antwerp, Antwerp, Belgium
| | - Vera Hartman
- Department of Hepatobiliary, Transplantation and Endocrine Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Bart Bracke
- Department of Hepatobiliary, Transplantation and Endocrine Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Thierry Chapelle
- Department of Hepatobiliary, Transplantation and Endocrine Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Geert Roeyen
- Department of Hepatobiliary, Transplantation and Endocrine Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Dirk Ysebaert
- Department of Hepatobiliary, Transplantation and Endocrine Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Gerda Van Beeumen
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Department of Hepatobiliary, Transplantation and Endocrine Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Erik Snelders
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Laboratory of Experimental Medicine and Paediatrics, University of Antwerp, Antwerp, Belgium
| | - Annick Massart
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Laboratory of Experimental Medicine and Paediatrics, University of Antwerp, Antwerp, Belgium
| | - Katrien Leyssens
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
| | - Marie M Couttenye
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Laboratory of Experimental Medicine and Paediatrics, University of Antwerp, Antwerp, Belgium
| | - Daniel Abramowicz
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Laboratory of Experimental Medicine and Paediatrics, University of Antwerp, Antwerp, Belgium
| | - Rachel Hellemans
- Department of Nephrology, Antwerp University Hospital, Antwerp, Belgium
- Laboratory of Experimental Medicine and Paediatrics, University of Antwerp, Antwerp, Belgium
| |
Collapse
|
36
|
Lim WH, Adams B, Alexander S, Bouts AHM, Claas F, Collins M, Cornelissen E, Dunckley H, de Jong H, D’Orsogna L, Francis A, Heidt S, Herman J, Holdsworth R, Kausman J, Khalid R, Kim JJ, Kim S, Knops N, Kosmoliaptsis V, Kramer C, Kuypers D, Larkins N, Palmer SC, Prestidge C, Prytula A, Sharma A, Shingde M, Taverniti A, Teixeira-Pinto A, Trnka P, Willis F, Wong D, Wong G. Improve in-depth immunological risk assessment to optimize genetic-compatibility and clinical outcomes in child and adolescent recipients of parental donor kidney transplants: protocol for the INCEPTION study. BMC Nephrol 2021; 22:416. [PMID: 34923958 PMCID: PMC8684542 DOI: 10.1186/s12882-021-02619-0] [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: 09/22/2021] [Accepted: 11/23/2021] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Parental donor kidney transplantation is the most common treatment option for children and adolescents with kidney failure. Emerging data from observational studies have reported improved short- and medium-term allograft outcomes in recipients of paternal compared to maternal donors. The INCEPTION study aims to identify potential differences in immunological compatibility between maternal and paternal donor kidneys and ascertain how this affects kidney allograft outcomes in children and adolescents with kidney failure.
Methods
This longitudinal observational study will recruit kidney transplant recipients aged ≤18 years who have received a parental donor kidney transplant across 4 countries (Australia, New Zealand, United Kingdom and the Netherlands) between 1990 and 2020. High resolution human leukocyte antigen (HLA) typing of both recipients and corresponding parental donors will be undertaken, to provide an in-depth assessment of immunological compatibility. The primary outcome is a composite of de novo donor-specific anti-HLA antibody (DSA), biopsy-proven acute rejection or allograft loss up to 60-months post-transplantation. Secondary outcomes are de novo DSA, biopsy-proven acute rejection, acute or chronic antibody mediated rejection or Chronic Allograft Damage Index (CADI) score of > 1 on allograft biopsy post-transplant, allograft function, proteinuria and allograft loss. Using principal component analysis and Cox proportional hazards regression modelling, we will determine the associations between defined sets of immunological and clinical parameters that may identify risk stratification for the primary and secondary outcome measures among young people accepting a parental donor kidney for transplantation. This study design will allow us to specifically investigate the relative importance of accepting a maternal compared to paternal donor, for families deciding on the best option for donation.
Discussion
The INCEPTION study findings will explore potentially differential immunological risks of maternal and paternal donor kidneys for transplantation among children and adolescents. Our study will provide the evidence base underpinning the selection of parental donor in order to achieve the best projected long-term kidney transplant and overall health outcomes for children and adolescents, a recognized vulnerable population.
Trial registration
The INCEPTION study has been registered with the Australian New Zealand Clinical Trials Registry, with the trial registration number of ACTRN12620000911998 (14th September 2020).
Collapse
|
37
|
Deshpande PP, Jariwala S, Martin L, Golestaneh L. Impact of technology-based interventions on linking potential kidney donors and transplant candidates: a scoping review. Transpl Int 2021; 34:2781-2793. [PMID: 34637562 DOI: 10.1111/tri.14136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 09/13/2021] [Accepted: 09/29/2021] [Indexed: 12/25/2022]
Abstract
Despite the demonstrated survival advantage in end-stage kidney disease (ESKD) patients of a preemptive living donor kidney transplantation (LDKT), there has been a decline in LDKT among African American and Hispanic populations. We performed a scoping review and summarized the evidence about the use of technology-based interventions (TBI) to not only increase knowledge and awareness of LDKT but also link living donors with transplant candidates. We evaluated 31 studies and characterized them into "transplant-candidate facing" TBI, "transplant donor facing" TBI, and "interactive websites" targeting both donors and candidates. For the patient-facing interventions, 60% of studies suggested an increased likelihood of linking possible donors and candidates. The donor-facing interventions showed an increase in donor awareness and 75% of these interventions suggested increasing donor-candidate linkage. This study also demonstrates that TBI (regardless of medium) that are accessible and customized to the specific target population can potentially increase linkage of donors to recipients and serve as effective guides to connect potential donors to transplant candidates.
Collapse
Affiliation(s)
- Priya P Deshpande
- Division of Nephrology, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
| | - Sunit Jariwala
- Department of Medicine, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA
| | - Lily Martin
- Library Services, Mount Sinai Hospital, New York, NY, USA
| | - Ladan Golestaneh
- Division of Nephrology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA
| |
Collapse
|
38
|
Lim JH, Jeon Y, Lee SH, Lee YH, Lee JP, Yang J, Kim MS, Jung HY, Choi JY, Park SH, Kim CD, Kim YL, Cho JH. Declining trend of preemptive kidney transplantation and impact of pretransplant dialysis: a Korean nationwide prospective cohort study. Transpl Int 2021; 34:2769-2780. [PMID: 34633715 DOI: 10.1111/tri.14135] [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: 06/02/2021] [Revised: 09/13/2021] [Accepted: 10/08/2021] [Indexed: 11/29/2022]
Abstract
We evaluated the temporal trend of preemptive kidney transplantation (KT) and the effect of pretransplant dialysis duration on post-transplant outcomes. This was a nationwide cohort study of the first-time 3392 living donor KT (LDKT) recipients (2014-2019). The annual changes in proportion of preemptive KT, factors associated with preemptive KT, and post-transplant outcomes were analyzed. Preemptive KT was performed in 816 (24.1%) patients. Annual trend analysis revealed gradual decrease in preemptive KT over time (P = 0.042). Among the underlying causes of preemptive KT, the proportion of diabetes increased and that of glomerulonephritis decreased during the study period. Glomerulonephritis as the primary renal disease was a predictor of preemptive KT. Patients with pretransplant dialysis >6 months showed increased graft failure risk than preemptive KT in the subdistribution of hazard model for competing risk (adjusted hazard ratio [aHR], 2.53; 95% confidence interval [CI], 1.09-5.87; P = 0.031) and in propensity score-matched analysis (aHR, 2.45; 95% CI, 1.02-5.92; P = 0.034); however, pretransplant dialysis ≤6 months showed comparable graft survival with preemptive KT in both analyses. Preemptive KT declined over successive years, associated with an increase in diabetes and a decrease in glomerulonephritis as underlying causes of KT. Short period of dialysis less than 6 months does not affect graft survival compared with preemptive KT; however, longer dialysis decreases graft survival.
Collapse
Affiliation(s)
- Jeong-Hoon Lim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Yena Jeon
- Department of Statistics, Kyungpook National University, Daegu, South Korea
| | - Sang-Ho Lee
- Division of Nephrology, Department of Internal Medicine, Kyung Hee University, Seoul, South Korea
| | - Yu Ho Lee
- Division of Nephrology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | - Jung Pyo Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Jaeseok Yang
- Division of Nephrology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Myoung Soo Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Hee-Yeon Jung
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Ji-Young Choi
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Sun-Hee Park
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Chan-Duck Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Yong-Lim Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Jang-Hee Cho
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | | |
Collapse
|
39
|
Grèze C, Pereira B, Boirie Y, Guy L, Millet C, Clerfond G, Garrouste C, Heng AE. Impact of obesity in kidney transplantation: a prospective cohort study from French registries between 2008 and 2014. Nephrol Dial Transplant 2021; 37:584-594. [PMID: 34610103 DOI: 10.1093/ndt/gfab277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The access of obese patients to kidney transplantation is limited despite several studies showing that obese transplant recipients had a better survival rate than those undergoing dialysis. The aim of this study was to compare patient and graft survival rates and post-renal transplant complications in obese patients and non-obese patients and to assess the effect of pre-transplant weight loss in obese patients on transplant outcomes. METHODS We carried out a prospective cohort study using two French registries REIN and CRISTAL on 7 270 kidney transplant patients between 2008 and 2014 in France. We compared obese patients with non-obese patients and obese patients who lost more than 10% of weight before the transplant (Obese WL and Obese nWL). RESULTS The mean BMI in our obese patients was 32 kg/m2. Graft survival was lower in obese patients than in non-obese patients (HR = 1.40, IC 95% [1.09; 1.78], P = 0.007) whereas patient survival was similar (HR = 0.94, IC 95% [0.73; 1.23], P = 0.66). Graft survival was significantly lower in Obese WL than in Obese nWL (HR = 2.17, CI 95% [1.02; 4.63], P = 0.045) whereas patient survival was similar in the two groups (HR = 0.79, IC 95% [0.35; 1.77], P = 0.56). CONCLUSION Grade I obesity does not seem to be a risk factor for excess mortality after kidney transplantation and should not be an obstacle to having access to a graft. Weight loss before a kidney transplant in this patients should not be essential for registration on waiting list.
Collapse
Affiliation(s)
- Clarisse Grèze
- Service de Néphrologie, Dialyse et Transplantation, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Bruno Pereira
- Unité de Biostatistiques (DRCI), CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Yves Boirie
- Service de Nutrition clinique, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Laurent Guy
- Service d'Urologie, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Clémentine Millet
- Service d'Urologie, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Guillaume Clerfond
- Service de Cardiologie, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Cyril Garrouste
- Service de Néphrologie, Dialyse et Transplantation, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Anne-Elisabeth Heng
- Service de Néphrologie, Dialyse et Transplantation, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| |
Collapse
|
40
|
Lenihan CR, Liu S, Airy M, Walther C, Montez-Rath ME, Winkelmayer WC. The Association of Pre-Kidney Transplant Dialysis Modality with de novo Posttransplant Heart Failure. Cardiorenal Med 2021; 11:209-217. [PMID: 34515084 DOI: 10.1159/000518535] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 06/25/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Heart failure (HF) after kidney transplantation is a significant but understudied problem. Pretransplant dialysis modality could influence incident HF risk through differing cardiac stressors. However, whether pretransplant dialysis modality is associated with the development of posttransplant HF is unknown. METHODS We used the US Renal Data System to assemble a cohort of 27,701 patients who underwent their first kidney transplant in the USA between the years 2005 and 2012 and who had Medicare fee-for-service coverage for >6 months preceding their transplant date. Patients with any HF diagnosis prior to transplant were excluded. Detailed baseline patient characteristics and comorbidities were abstracted. The outcome of interest was de novo posttransplant HF. Pretransplant dialysis modality was defined as the dialysis modality used at the time of transplant. We conducted time-to-event analyses using Cox regression. Death was treated as a competing risk in the study's primary analysis. Graft failure was included as a time-varying covariate. RESULTS Among eligible patients, 81% were treated with hemodialysis prior to transplant, and hemodialysis patients were more likely to be male, had a shorter dialysis vintage, and had more diabetes and vascular disease diagnoses. When adjusted for all available demographic and clinical data, pretransplant treatment with hemodialysis (vs. peritoneal dialysis) was associated with a 19% increased risk in de novo posttransplant HF, with sub-distribution HR 1.19 (95% CI: 1.09-1.29). CONCLUSIONS Our results suggest that choice of pretransplant dialysis modality may impact the development of posttransplant HF.
Collapse
Affiliation(s)
- Colin R Lenihan
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, California, USA
| | - Sai Liu
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, California, USA
| | - Medha Airy
- Selzman Institute for Kidney Health, Section of Nephrology, Baylor College of Medicine, Houston, Texas, USA
| | - Carl Walther
- Selzman Institute for Kidney Health, Section of Nephrology, Baylor College of Medicine, Houston, Texas, USA
| | - Maria E Montez-Rath
- Division of Nephrology, Stanford University School of Medicine, Palo Alto, California, USA
| | - Wolfgang C Winkelmayer
- Selzman Institute for Kidney Health, Section of Nephrology, Baylor College of Medicine, Houston, Texas, USA
| |
Collapse
|
41
|
Effects of Social Deprivation on the Proportion of Preemptive Kidney Transplantation: A Mediation Analysis. Transplant Direct 2021; 7:e750. [PMID: 36567853 PMCID: PMC9771216 DOI: 10.1097/txd.0000000000001203] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 05/27/2021] [Accepted: 06/12/2021] [Indexed: 12/27/2022] Open
Abstract
Social inequalities in health lead to an increased risk of chronic kidney disease and less access to renal transplantation. The objective of this study was to assess the association between social deprivation estimated by the fifth quintile of the European Deprivation Index (EDI) and preemptive kidney transplantation (PKT) and to explore the potential mediators of this association. Methods This retrospective observational multicenter study included 8701 patients who received their first renal transplant in France between 2010 and 2014. Mediation analyses were performed to assess the direct and indirect effects of the EDI on PKT. Results Among the 8701 transplant recipients, 32.4% belonged to the most deprived quintile of the EDI (quintile 5) and 16% received a PKT (performed either with a deceased- or living-donor). There was a significant association between quintile 5 of the EDI and PKT (total effect: odds ratio [OR]: 0.64 [95% confidence interval (CI): 0.55-0.73]). Living-donor kidney transplantation was the main mediator of this association (natural indirect effect: OR: 0.92 [0.89-0.95]). To a lesser extent, positive cytomegalovirus and hepatitis C serologies and blood group B were also mediators (respective natural indirect effects: OR: 0.98 [95% CI: 0.95-1.00], OR: 0.99 [95% CI: 0.99-1.00], and OR: 0.99 [95% CI: 0.98-1.00], P < 0.05). Conclusions Our study suggests that social deprivation is associated with a decreased proportion of PKT. This association might be mitigated by promoting living-donor transplantation.
Collapse
|
42
|
Park S, Park J, Kang E, Lee JW, Kim Y, Park M, Kim K, Kim HJ, Han M, Cho JH, Lee JP, Lee S, Kim SW, Park SM, Chae DW, Chin HJ, Kim YC, Kim YS, Choi I, Lee H. Economic Impact of Donating a Kidney on Living Donors: A Korean Cohort Study. Am J Kidney Dis 2021; 79:175-184.e1. [PMID: 34419516 DOI: 10.1053/j.ajkd.2021.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 07/04/2021] [Indexed: 11/11/2022]
Abstract
RATIONALE & OBJECTIVE Although existing studies have reported adverse health outcomes after kidney donation, its socioeconomic impact on living donors requires further study. STUDY DESIGN A retrospective observational cohort study including a matched comparison group. SETTING & PARTICIPANTS 1,285 living kidney donors from 7 tertiary hospitals between 2003 and 2016, and a matched comparison group consisting of the same number of health screening examinees with similar baseline clinical characteristics and socioeconomic status. All participants were receiving Korean national health insurance. EXPOSURE Kidney donation as reflected in the Korean National Health Insurance System (NHIS) database. OUTCOME Changes in household economic status estimated by Korean national health insurance fees and changes in employment status reflected in the NHIS database. ANALYTICAL APPROACH The outcomes of the donor group and matched control group were compared annually using multivariable logistic regression analyses adjusted for clinical and demographic characteristics. RESULTS The median ages of the donors and matched controls were 45 and 46 years, respectively; 44.6% of both groups were male. Compared to the comparison group, living donors were at higher risk of being unemployed or losing employment during the first 2 years after donation (eg, first-year loss of employment: odds ratio (OR), 2.27 [95% CI, 1.55-3.33]); however, this association did not persist. Donors also had a significantly lower odds of improvement in economic status (OR, 0.57 [95% CI, 0.47-0.71]) and a higher odds of deterioration in financial status (OR, 1.54 [95% CI, 1.23-1.93]) in the first year after transplantation and subsequently. LIMITATIONS Unmeasured differences between donors and matched controls creating residual selection bias and confounding. CONCLUSIONS Living kidney donors may suffer loss of employment and poor economic status after their voluntary donation. The socioeconomic impact on these donors should be considered in conjunction with the potential long-term adverse health outcomes after donation.
Collapse
Affiliation(s)
- Sehoon Park
- Department of Biomedical Science, College of Medicine, Seoul National University, Seoul, South Korea
| | - Jina Park
- Department of Biostatistics, College of Medicine, Korea University, Seoul, South Korea
| | - Eunjeong Kang
- Department of Internal Medicine, Ewha Womans University Seoul Hospital, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Jang Wook Lee
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University, Seoul, South Korea
| | - Yaerim Kim
- Department of Internal Medicine, School of Medicine, Keimyung University, Daegu, South Korea
| | - Minsu Park
- Department of Information and Statistics, Chungnam National University, Daejeon, Korea
| | - Kwangsoo Kim
- Transdisciplinary Department of Medicine & Advanced Technology, Seoul National University, Seoul, South Korea
| | - Hyo Jeong Kim
- Division of Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - Miyeun Han
- Department of Internal Medicine, Pusan National University Hospital, Pusan, South Korea
| | - Jang-Hee Cho
- Department of Internal Medicine, Kyungpook National University, Daegu, South Korea
| | - Jung Pyo Lee
- Department of Internal Medicine, Boramae Medical Center, Seoul National University, Seoul, South Korea
| | - Sik Lee
- Department of Internal Medicine, Chonbuk National University Hospital, Jeonju, South Korea
| | - Soo Wan Kim
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Sang Min Park
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Dong-Wan Chae
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, South Korea; Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Ho Jun Chin
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, South Korea; Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Yong Chul Kim
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, South Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul National University, Seoul, South Korea
| | - Yon Su Kim
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, South Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul National University, Seoul, South Korea
| | - Insun Choi
- Division of Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - Hajeong Lee
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, South Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul National University, Seoul, South Korea.
| |
Collapse
|
43
|
Impacts of Interaction of Mental Condition and Quality of Life between Donors and Recipients at Decision-Making of Preemptive and Post-Dialysis Living-Donor Kidney Transplantation. J Pers Med 2021; 11:jpm11050414. [PMID: 34069298 PMCID: PMC8157173 DOI: 10.3390/jpm11050414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/08/2021] [Accepted: 05/13/2021] [Indexed: 12/24/2022] Open
Abstract
Pre-emptive kidney transplantation (PEKT) is considered one of the most effective types of kidney replacement therapies to improve the quality of life (QOL) and physical prognosis of patients with end-stage renal disease (ESRD). In Japan, living-donor kidney transplantation is a common therapeutic option for patients undergoing dialyses (PDKT). Moreover, during shared decision-making in kidney replacement therapy, the medical staff of the multidisciplinary kidney team often provide educational consultation programmes according to the QOL and sociopsychological status of the ESRD patient. In Japan, the majority of kidney donations are provided by living family members. However, neither the psychosocial status of donors associated with the decision-making of kidney donations nor the interactions of the psychosocial status between donors and recipients have been clarified in the literature. In response to this gap, the present study determined the QOL, mood and anxiety status of donors and recipients at kidney transplantation decision-making between PEKT and PDKT. Deterioration of the recipient's QOL associated with "role physical" shifted the decision-making to PEKT, whereas deterioration of QOL associated with "role emotional" and "social functioning" of the recipients shifted the decision-making to PDKT. Furthermore, increased tension/anxiety and depressive mood contributed to choosing PDKT, but increased confusion was dominantly observed in PEKT recipients. These direct impact factors for decision-making were secondarily regulated by the trait anxiety of the recipients. Unlike the recipients, the donors' QOL associated with vitality contributed to choosing PDKT, whereas the physical and mental health of the donors shifted the decision-making to PEKT. Interestingly, we also detected the typical features of PEKT donors, who showed higher tolerability against the trait anxiety of reactive tension/anxiety than PDKT donors. These results suggest that choosing between either PEKT or PDKT is likely achieved through the proactive support of family members as candidate donors, rather than the recipients. Furthermore, PDKT is possibly facilitated by an enrichment of the life-work-family balance of the donors. Therefore, multidisciplinary kidney teams should be aware of the familial psychodynamics between patients with ESRD and their family members during the shared decision-making process by continuing the educational consultation programmes for the kidney-replacement-therapy decision-making process.
Collapse
|
44
|
El Fekih R, Hurley J, Tadigotla V, Alghamdi A, Srivastava A, Coticchia C, Choi J, Allos H, Yatim K, Alhaddad J, Eskandari S, Chu P, Mihali AB, Lape IT, Lima Filho MP, Aoyama BT, Chandraker A, Safa K, Markmann JF, Riella LV, Formica RN, Skog J, Azzi JR. Discovery and Validation of a Urinary Exosome mRNA Signature for the Diagnosis of Human Kidney Transplant Rejection. J Am Soc Nephrol 2021; 32:994-1004. [PMID: 33658284 PMCID: PMC8017553 DOI: 10.1681/asn.2020060850] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 12/26/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Developing a noninvasive clinical test to accurately diagnose kidney allograft rejection is critical to improve allograft outcomes. Urinary exosomes, tiny vesicles released into the urine that carry parent cells' proteins and nucleic acids, reflect the biologic function of the parent cells within the kidney, including immune cells. Their stability in urine makes them a potentially powerful tool for liquid biopsy and a noninvasive diagnostic biomarker for kidney-transplant rejection. METHODS Using 192 of 220 urine samples with matched biopsy samples from 175 patients who underwent a clinically indicated kidney-transplant biopsy, we isolated urinary exosomal mRNAs and developed rejection signatures on the basis of differential gene expression. We used crossvalidation to assess the performance of the signatures on multiple data subsets. RESULTS An exosomal mRNA signature discriminated between biopsy samples from patients with all-cause rejection and those with no rejection, yielding an area under the curve (AUC) of 0.93 (95% CI, 0.87 to 0.98), which is significantly better than the current standard of care (increase in eGFR AUC of 0.57; 95% CI, 0.49 to 0.65). The exosome-based signature's negative predictive value was 93.3% and its positive predictive value was 86.2%. Using the same approach, we identified an additional gene signature that discriminated patients with T cell-mediated rejection from those with antibody-mediated rejection (with an AUC of 0.87; 95% CI, 0.76 to 0.97). This signature's negative predictive value was 90.6% and its positive predictive value was 77.8%. CONCLUSIONS Our findings show that mRNA signatures derived from urinary exosomes represent a powerful and noninvasive tool to screen for kidney allograft rejection. This finding has the potential to assist clinicians in therapeutic decision making.
Collapse
Affiliation(s)
- Rania El Fekih
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - James Hurley
- Exosome Diagnostics, a Bio-Techne brand, Waltham, Massachusetts
| | | | - Areej Alghamdi
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Anand Srivastava
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - John Choi
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Hazim Allos
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Karim Yatim
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Juliano Alhaddad
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Siawosh Eskandari
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Philip Chu
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Albana B. Mihali
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Isadora T. Lape
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Mauricio P. Lima Filho
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Bruno T. Aoyama
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Anil Chandraker
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Kassem Safa
- Transplant Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - James F. Markmann
- Transplant Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Leonardo V. Riella
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - Johan Skog
- Exosome Diagnostics, a Bio-Techne brand, Waltham, Massachusetts
| | - Jamil R. Azzi
- Renal Division, Transplantation Research Center, Brigham and Women’s Hospital and Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
45
|
Preemptive Kidney Transplantation is Associated With Transplantation Outcomes in Children: Results From the French Kidney Replacement Therapy Registry. Transplantation 2021; 106:401-411. [PMID: 33821599 DOI: 10.1097/tp.0000000000003757] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Kidney transplantation (KT) is the optimal treatment for children with end-stage kidney disease (ESKD). The aim of this study was to evaluate the impact of PKT and of pretransplant dialysis duration on graft survival among French pediatric kidney transplant recipients. METHODS We analyzed all first pediatric kidney-only transplantations performed in France between 1993 and 2012. A Cox multivariable model was used to investigate the association of PKT and pretransplant dialysis time with the hazard of graft failure defined as death, return to dialysis or retransplant, whichever occurred first. RESULTS 1911 patients were included, of which 380 (19.8%) received a PKT. Median time of follow-up was 7.0 years. PKT was associated with a 55% reduction of the hazard of graft failure at any time after KT compared to patients transplanted after dialysis (HR 0.45; 95%CI 0.33-0.62), after adjustment for recipient sex and age, primary kidney disease, donor age and type (living or deceased donor), number of HLA mismatches, cold ischemia time and year of transplantation. A reduction of the hazard of graft failure was found in PKT whatever the compared duration of dialysis, even when less than 6 months and whatever the dialysis modality. Results were similar in multiple sensitivity analyses. CONCLUSIONS In France, PKT among pediatric patients is associated with a better graft survival when compared to KT after dialysis, even when less than 6 months. Based on these findings, we suggest that PKT should be considered as the treatment of choice for children with ESKD.
Collapse
|
46
|
Karabulut U, Keskin K. Does short-term dialysis significantly increase coronary artery disease burden in diabetic patients who undergo renal transplantation? INTERNATIONAL JOURNAL OF THE CARDIOVASCULAR ACADEMY 2021. [DOI: 10.4103/ijca.ijca_17_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
47
|
Kurian SM, Bagsic SRS, Case J, Barrick BL, Schaffer R, Rice JC, Marsh CL. UNOS/OPTN data guided assessment of IgA nephropathy recurrence after kidney transplantation and evaluation of immunosuppressive protocols in a steroid free center. TRANSPLANTATION REPORTS 2020. [DOI: 10.1016/j.tpr.2020.100063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
48
|
Parmentier C, Lassalle M, Berard E, Bacchetta J, Delbet JD, Harambat J, Couchoud C, Hogan J. Setting reasonable objectives for improving preemptive kidney transplantation rates in children. Pediatr Nephrol 2020; 35:2353-2360. [PMID: 32583044 DOI: 10.1007/s00467-020-04653-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 05/07/2020] [Accepted: 06/05/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND This study aims to develop a method to estimate the potential of preemptive kidney transplantation (PKT) by identifying patients who were transplanted after a dialysis period (non-preemptive kidney transplantation (NPKT)) despite being medically suitable for PKT. METHODS All children (< 18 years old) starting kidney replacement therapy (KRT) in France, between 2010 and 2016 and transplanted before December 31, 2017, were included. A propensity score (PS) of receiving PKT was estimated by multivariate logistic regression based on recipient medical characteristics. Healthcare use during the 24 months prior to KRT initiation was extracted from the French National Health Insurance database, and a pre-KRT follow-up of more than 18 months was considered sufficient to allow preemptive transplantation. RESULTS Among 643 patients who started KRT, 149 (23.2%) were preemptively transplanted. Using PS stratification, among 391 NPKT patients, we identified 145 patients (37%) suitable for PKT, according to clinical characteristics. Mean age was 12.3 years, 67% were males, and 56% had urological abnormalities. Among those 145 patients, we identified 79 NPKT patients who started on dialysis despite early referral to a nephrologist (more than 18 months prior to KRT initiation). CONCLUSIONS This method estimates a potential of 228 (149 + 79) PKT (35%) among pediatric patients in France. A similar method could be used in adults or in other countries. Estimation of the rate of patients with CKD stage 5 medically suitable for PKT will be of interest for health policy makers when setting up objectives for improvement in preemptive kidney transplant access.
Collapse
Affiliation(s)
- Cyrielle Parmentier
- Pediatric Nephrology Unit, Armand Trousseau Hospital, APHP.6, 75012, Paris, France.
- REIN Registry, Agence de la Biomedecine, La Plaine Saint-Denis, France.
| | - Mathilde Lassalle
- REIN Registry, Agence de la Biomedecine, La Plaine Saint-Denis, France
| | - Etienne Berard
- Pediatric Nephrology Unit, CHU de Nice-Hôpital, Nice, France
| | | | - Jean-Daniel Delbet
- Pediatric Nephrology Unit, Armand Trousseau Hospital, APHP.6, 75012, Paris, France
| | - Jerome Harambat
- Pediatric Nephrology Unit, CHU de Bordeaux, Bordeaux, France
| | - Cécile Couchoud
- REIN Registry, Agence de la Biomedecine, La Plaine Saint-Denis, France
| | - Julien Hogan
- Pediatric Nephrology Unit, Robert-Debré Hospital, APHP, Paris, France
| |
Collapse
|
49
|
New-Onset Gout as an Independent Risk Factor for Returning to Dialysis After Kidney Transplantation. Transplant Direct 2020; 6:e634. [PMID: 33225059 PMCID: PMC7673774 DOI: 10.1097/txd.0000000000001081] [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: 08/27/2020] [Accepted: 09/13/2020] [Indexed: 11/25/2022] Open
Abstract
Background. The causal relationship between gout and renal transplant outcomes is difficult to assess due to multiple interacting covariates. This study sought to estimate the independent effect of new-onset gout on renal transplant outcomes using a methodology that accounted for these interactions. Methods. This study analyzed data on patients in the US Renal Data System (USRDS) who received a primary kidney transplant between 2008 and 2015. The exposure was new-onset gout, and the primary endpoint was returning to dialysis >12 months postindex date (transplant date). A marginal structural model (MSM) was fitted to determine the relative risk of new-onset gout on return to dialysis. Results. 18 525 kidney transplant recipients in the USRDS met study eligibility. One thousand three hundred ninety-nine (7.6%) patients developed new-onset gout, and 1420 (7.7%) returned to dialysis >12 months postindex. Adjusting for baseline and time-varying confounders via the MSM showed new-onset gout was associated with a 51% increased risk of return to (RR, 1.51; 95% CI, 1.03-2.20). Conclusions. This finding suggests that new onset gout after kidney transplantation could be a harbinger for poor renal outcomes, and to our knowledge is the first study of kidney transplant outcomes using a technique that accounted for the dynamic relationship between renal dysfunction and gout.
Collapse
|
50
|
Levan ML, Waldram MM, DiBrito SR, Thomas AG, Al Ammary F, Ottman S, Bannon J, Brennan DC, Massie AB, Scalea J, Barth RN, Segev DL, Garonzik-Wang JM. Financial incentives versus standard of care to improve patient compliance with live kidney donor follow-up: protocol for a multi-center, parallel-group randomized controlled trial. BMC Nephrol 2020; 21:465. [PMID: 33167882 PMCID: PMC7654057 DOI: 10.1186/s12882-020-02117-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/21/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Live kidney donors (LKDs) account for nearly a third of kidney transplants in the United States. While donor nephrectomy poses minimal post-surgical risk, LKDs face an elevated adjusted risk of developing chronic diseases such as hypertension, diabetes, and end-stage renal disease. Routine screening presents an opportunity for the early detection and management of chronic conditions. Transplant hospital reporting requirements mandate the submission of laboratory and clinical data at 6-months, 1-year, and 2-years after kidney donation, but less than 50% of hospitals are able to comply. Strategies to increase patient engagement in follow-up efforts while minimizing administrative burden are needed. We seek to evaluate the effectiveness of using small financial incentives to promote patient compliance with LKD follow-up. METHODS/DESIGN We are conducting a two-arm randomized controlled trial (RCT) of patients who undergo live donor nephrectomy at The Johns Hopkins Hospital Comprehensive Transplant Center (MDJH) and the University of Maryland Medical Center Transplant Center (MDUM). Eligible donors will be recruited in-person at their first post-surgical clinic visit or over the phone. We will use block randomization to assign LKDs to the intervention ($25 gift card at each follow-up visit) or control arm (current standard of care). Follow-up compliance will be tracked over time. The primary outcome will be complete (all components addressed) and timely (60 days before or after expected visit date), submission of LKD follow-up data at required 6-month, 1-year, and 2-year time points. The secondary outcome will be transplant hospital-level compliance with federal reporting requirements at each visit. Rates will be compared between the two arms following the intention-to-treat principle. DISCUSSION Small financial incentivization might increase patient compliance in the context of LKD follow-up, without placing undue administrative burden on transplant providers. The findings of this RCT will inform potential center- and national-level initiatives to provide all LKDs with small financial incentives to promote engagement with post-donation monitoring efforts. TRIAL REGISTRATION ClinicalTrials.gov number: NCT03090646 Date of registration: March 2, 2017 Sponsors: Johns Hopkins University, University of Maryland Medical Center Funding: The Living Legacy Foundation of Maryland.
Collapse
Affiliation(s)
- Macey L. Levan
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
- Department of Acute and Chronic Care, Johns Hopkins School of Nursing, Baltimore, MD USA
| | - Madeleine M. Waldram
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
| | - Sandra R. DiBrito
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
| | - Alvin G. Thomas
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC USA
| | - Fawaz Al Ammary
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
| | - Shane Ottman
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
| | - Jaclyn Bannon
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
| | - Daniel C. Brennan
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
| | - Allan B. Massie
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
- Department of Epidemiology, Johns Hopkins School of Public Health, Baltimore, MD USA
| | - Joseph Scalea
- Division of Transplantation, University of Maryland School of Medicine, Baltimore, MD USA
| | - Rolf N. Barth
- Division of Transplantation, University of Maryland School of Medicine, Baltimore, MD USA
| | - Dorry L. Segev
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
- Department of Acute and Chronic Care, Johns Hopkins School of Nursing, Baltimore, MD USA
- Department of Epidemiology, Johns Hopkins School of Public Health, Baltimore, MD USA
| | - Jacqueline M. Garonzik-Wang
- Department of Surgery, Division of Transplantation, Johns Hopkins University School of Medicine, 2000 E. Monument Street, Baltimore, MD 21205 USA
| |
Collapse
|