1
|
Anouti A, Patel MS, VanWagner LB, Lee WM, Fung JJ, Cholankeril G, Hwang CS, Mufti AR, Tujios S, Kerr T, Rich NE, Louissaint J, Desai DM, Vagefi PA, Hanish S, Shah J, Singal AG, Cotter TG. Biliary atresia and liver transplantation in the United States: A contemporary analysis. Liver Int 2023; 43:2198-2209. [PMID: 37548078 DOI: 10.1111/liv.15689] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/29/2023] [Accepted: 07/24/2023] [Indexed: 08/08/2023]
Abstract
BACKGROUND Biliary atresia (BA) remains the number one indication for paediatric liver transplantation (LT) worldwide but is an uncommon indication for older LT recipients. The impact of recent donor allocation changes, pervasive organ shortage and evolving LT practices on the BA LT population is unknown. METHODS We identified patients who underwent LT between January 2010 and December 2021 using the UNOS database. We compared clinical outcomes between patients with BA and those with non-BA cholestatic liver disease. Groups were stratified by age, <12 years (allocated via PELD system) and ≥12 years (allocated via MELD system). Waitlist outcomes were compared using competing-risk regression analysis, graft survival rates were compared using Kaplan-Meier time-to-event analysis and Cox proportional hazards modelling provided adjusted estimates. RESULTS There were 2754 BA LT waitlist additions and 2206 BA LTs (1937 <12 years [younger], 269 ≥12 years [older]). There were no differences in waitlist mortality between BA and non-BA cholestatic patients. Among BA LT recipients, there were 441 (20.0%) living-donor liver transplantations (LDLT) and 611 (27.7%) split deceased-donor LTs. Five-year graft survival was significantly higher among BA versus non-BA cholestatic patients in the older group (88.3% vs. 79.5%, p < .01) but not younger group (89.3% vs. 89.5%). Among BA LT recipients, improved graft outcomes were associated with LDLT (vs. split LT: HR: 2, 95% CI: 1.03-3.91) and higher transplant volume (volume >100 vs. <40 BA LTs: HR: 3.41, 95% CI: 1.87-6.2). CONCLUSION Liver transplant outcomes among BA patients are excellent, with LDLT and higher transplant centre volume associated with optimal graft outcomes.
Collapse
Affiliation(s)
- Ahmad Anouti
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Madhukar S Patel
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Lisa B VanWagner
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - William M Lee
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - John J Fung
- Department of Surgery, University of Chicago Medicine Transplant Institute, Chicago, Illinois, USA
| | - George Cholankeril
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Christine S Hwang
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Arjmand R Mufti
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Shannan Tujios
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Thomas Kerr
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Nicole E Rich
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Jeremy Louissaint
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Dev M Desai
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Parsia A Vagefi
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Steven Hanish
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Jigesh Shah
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Amit G Singal
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Thomas G Cotter
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, Texas, USA
| |
Collapse
|
2
|
Living Donor Liver Transplant Center Volume Influences Waiting List Survival Among Children Listed for Liver Transplantation. Transplantation 2022; 106:1807-1813. [PMID: 35579406 DOI: 10.1097/tp.0000000000004173] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Pediatric living donor liver transplantation (LDLT) remains infrequently performed in the United States and localized to a few centers. This study aimed to compare pediatric waiting list and posttransplant outcomes by LDLT center volume. METHODS The Scientific Registry of Transplant Recipients/Organ Procurement and Transplantation Network database was retrospectively reviewed for all pediatric (age <18 y) liver transplant candidates listed between January 1, 2009, and December 31, 2019. The average annual number of LDLT, deceased donor partial liver transplant (DDPLT), and overall (ie, LDLT + DDPLT + whole liver transplants) pediatric liver transplants performed by each transplant center during the study period was calculated. RESULTS Of 88 transplant centers, only 44 (50%) performed at least 1 pediatric LDLT during the study period. LDLT, DDPLT, and overall transplant center volume were all positively correlated. LDLT center volume was protective against waiting list dropout after adjusting for confounding variables (adjusted hazard ratio, 0.92; 95% confidence interval, 0.86-0.97; P = 0.004), whereas DDPLT and overall center volume were not (P > 0.05); however, DDPLT center volume was significantly protective against both recipient death and graft loss, whereas overall volume was only protective against graft loss and LDLT volume was not protective for either. CONCLUSIONS High-volume pediatric LDLT center can improve waiting list survival, whereas DDPLT and overall volume are associated with posttransplant survival. Expertise in all types of pediatric liver transplant options is important to optimize outcomes.
Collapse
|
3
|
Hickner B, Anand A, Godfrey EL, Dunson J, Reul RM, Cotton R, Galvan NTN, O'Mahony C, Goss JA, Rana A. Trends in Survival for Pediatric Transplantation. Pediatrics 2022; 149:184553. [PMID: 35079811 DOI: 10.1542/peds.2020-049632] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/01/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES Progress in pediatric transplantation measured in the context of waitlist and posttransplant survival is well documented but falls short of providing a complete perspective for children and their families. An intent-to-treat analysis, in which we measure survival from listing to death regardless of whether a transplant is received, provides a more comprehensive perspective through which progress can be examined. METHODS Univariable and multivariable Cox regression was used to analyze factors impacting intent-to-treat survival in 12 984 children listed for heart transplant, 17 519 children listed for liver transplant, and 16 699 children listed for kidney transplant. The Kaplan-Meier method and log-rank test were used to assess change in waitlist, posttransplant, and intent-to-treat survival. Wait times and transplant rates were compared by using χ2 tests. RESULTS Intent-to-treat survival steadily improved from 1987 to 2017 in children listed for heart (hazard ratio [HR] 0.96, 95% confidence interval [CI] 0.96-0.97), liver (HR 0.95, 95% CI 0.94-0.97), and kidney (HR 0.97, 95% CI 0.95-0.99) transplant. Waitlist and posttransplant survival also improved steadily for all 3 organs. For heart transplant, the percentage of patients transplanted within 1 year significantly increased from 1987 to 2017 (60.8% vs 68.7%); however, no significant increase was observed in liver (68.9% vs 72.5%) or kidney (59.2% vs 62.7%) transplant. CONCLUSIONS Intent-to-treat survival, which is more representative of the patient perspective than individual metrics alone, steadily improved for heart, liver, and kidney transplant over the study period. Further efforts to maximize the donor pool, improve posttransplant outcomes, and optimize patient care while on the waitlist may contribute to future progress.
Collapse
Affiliation(s)
| | | | - Elizabeth L Godfrey
- Department of Surgery, School of Medicine, Yale University, New Haven, Connecticut
| | | | | | - Ronald Cotton
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Nhu Thao Nguyen Galvan
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Christine O'Mahony
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - John A Goss
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Abbas Rana
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
4
|
Yap S, Vara R, Morais A. Post-transplantation Outcomes in Patients with PA or MMA: A Review of the Literature. Adv Ther 2020; 37:1866-1896. [PMID: 32270363 PMCID: PMC7141097 DOI: 10.1007/s12325-020-01305-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Indexed: 12/25/2022]
Abstract
Introduction Liver transplantation is recognised as a treatment option for patients with propionic acidemia (PA) and those with methylmalonic acidemia (MMA) without renal impairment. In patients with MMA and moderate-to-severe renal impairment, combined liver–kidney transplantation is indicated. However, clinical experience of these transplantation options in patients with PA and MMA remains limited and fragmented. We undertook an overview of post-transplantation outcomes in patients with PA and MMA using the current available evidence. Methods A literature search identified publications on the use of transplantation in patients with PA and MMA. Publications were considered if they presented adequate demographic and outcome data from patients with PA or MMA. Publications that did not report any specific outcomes for patients or provided insufficient data were excluded. Results Seventy publications were identified of which 38 were full papers. A total of 373 patients underwent liver/kidney/combined liver–kidney transplantation for PA or MMA. The most typical reason for transplantation was recurrent metabolic decompensation. A total of 27 post-transplant deaths were reported in patients with PA [14.0% (27/194)]. For patients with MMA, 18 post-transplant deaths were reported [11% (18/167)]. A total of 62 complications were reported in 115 patients with PA (54%) with cardiomyopathy (n = 12), hepatic arterial thrombosis (HAT; n = 14) and viral infections (n = 12) being the most commonly reported. A total of 52 complications were reported in 106 patients with MMA (49%) with viral infections (n = 14) and renal failure/impairment (n = 10) being the most commonly reported. Conclusions Liver transplantation and combined liver–kidney transplantation appears to benefit some patients with PA or MMA, respectively, but this approach does not provide complete correction of the metabolic defect and some patients remain at risk from disease-related and transplantation-related complications, including death. Thus, all treatment avenues should be exhausted before consideration of organ transplantation and the benefits of this approach must be weighed against the risk of perioperative complications on an individual basis.
Collapse
|