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Andres AM, Talayero P, Alcolea Sanchez A, Sanchez Galán A, Serradilla Rodríguez J, Bueno Jimenez A, Gonzalez Sacristan R, Stringa P, Papa Gobbi R, Lasa Lazaro M, Díaz Almirón M, Ramos Boluda E, Lopez Santamaría M, Hernández Oliveros F. Delayed introduction of sirolimus in paediatric intestinal transplant recipients: indications and long-term benefits. Transpl Int 2021; 34:1895-1907. [PMID: 34174115 DOI: 10.1111/tri.13959] [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: 12/31/2020] [Revised: 04/16/2021] [Accepted: 06/16/2021] [Indexed: 12/11/2022]
Abstract
To review our experience using sirolimus in a single centre paediatric intestinal transplantation cohort. Intestinal transplant patients with more than 3 months follow-up were divided into two groups according to their immunosuppression regimen: tacrolimus, (TAC group, n = 45 grafts) or sirolimus (SRL group, n = 38 grafts), which included those partially or completely converted from tacrolimus to sirolimus. The indications to switch were tacrolimus side effects and immunological complications. Survival and complications were retrospectively analysed comparing both groups. SRL was introduced 9 months (0 months-16.9 years) after transplant. The main cause for conversion was worsening renal function (45%), followed by haemolytic anaemia (21%) and graft-versus-host-disease (16%). Both groups showed a similar overall patient/graft survival (P = 0.76/0.08) and occurrence of rejection (24%/17%, P = 0.36). Immunological complications did not recur after conversion. Renal function significantly improved in most SRL patients. After a median follow-up of 65.17 months, 28/46 survivors were on SRL, 26 with monotherapy, with good graft function. Over one-third of our patients eventually required SRL conversion that allowed to improve their kidney function and immunological events, without entailing additional complications or survival impairment. Further trials are warranted to clarify the potential improvement of the standard tacrolimus maintenance by sirolimus conversion or addition.
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Affiliation(s)
- Ane M Andres
- Pediatric Surgery Department, La Paz University Hospital, Madrid, Spain.,Idipaz Institute, La Paz University Hospital, Madrid, Spain.,TransplantChild ERN, La Paz University Hospital, Madrid, Spain
| | - Paloma Talayero
- Immunology Department, 12 de Octubre University Hospital, Madrid, Spain
| | | | | | | | | | | | - Pablo Stringa
- Idipaz Institute, La Paz University Hospital, Madrid, Spain.,Institute for Immunological and Physiopathological Studies (IIFP-CONICET-UNLP), National University of La Plata, La plata, Buenos Aires, Argentina
| | | | - Maria Lasa Lazaro
- Immunology Department, 12 de Octubre University Hospital, Madrid, Spain
| | - Mariana Díaz Almirón
- Biostatistics Department, Idipaz Institute, La Paz University Hospital, Madrid, Spain
| | | | | | - Francisco Hernández Oliveros
- Pediatric Surgery Department, La Paz University Hospital, Madrid, Spain.,Idipaz Institute, La Paz University Hospital, Madrid, Spain.,TransplantChild ERN, La Paz University Hospital, Madrid, Spain
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Stevens RB, Foster KW, Miles CD, Kalil AC, Florescu DF, Sandoz JP, Rigley TH, Malik T, Wrenshall LE. A Randomized 2x2 Factorial Clinical Trial of Renal Transplantation: Steroid-Free Maintenance Immunosuppression with Calcineurin Inhibitor Withdrawal after Six Months Associates with Improved Renal Function and Reduced Chronic Histopathology. PLoS One 2015; 10:e0139247. [PMID: 26465152 PMCID: PMC4605789 DOI: 10.1371/journal.pone.0139247] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 09/08/2015] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION The two most significant impediments to renal allograft survival are rejection and the direct nephrotoxicity of the immunosuppressant drugs required to prevent it. Calcineurin inhibitors (CNI), a mainstay of most immunosuppression regimens, are particularly nephrotoxic. Until less toxic antirejection agents become available, the only option is to optimize our use of those at hand. AIM To determine whether intensive rabbit anti-thymocyte globulin (rATG) induction followed by CNI withdrawal would individually or combined improve graft function and reduce graft chronic histopathology-surrogates for graft and, therefore, patient survival. As previously reported, a single large rATG dose over 24 hours was well-tolerated and associated with better renal function, fewer infections, and improved patient survival. Here we report testing whether complete CNI discontinuation would improve renal function and decrease graft pathology. METHODS Between April 20, 2004 and 4-14-2009 we conducted a prospective, randomized, non-blinded renal transplantation trial of two rATG dosing protocols (single dose, 6 mg/kg vs. divided doses, 1.5 mg/kg every other day x 4; target enrollment = 180). Subsequent maintenance immunosuppression consisted of tacrolimus, a CNI, and sirolimus, a mammalian target of rapamycin inhibitor. We report here the outcome of converting patients after six months either to minimized tacrolimus/sirolimus or mycophenolate mofetil/sirolimus. Primary endpoints were graft function and chronic histopathology from protocol kidney biopsies at 12 and 24 months. RESULTS CNI withdrawal (on-treatment analysis) associated with better graft function (p <0.001) and lower chronic histopathology composite scores in protocol biopsies at 12 (p = 0.003) and 24 (p = 0.013) months, without affecting patient (p = 0.81) or graft (p = 0.93) survival, or rejection rate (p = 0.17). CONCLUSION CNI (tacrolimus) withdrawal at six months may provide a strategy for decreased nephrotoxicity and improved long-term function in steroid-free low immunological risk renal transplant patients. TRIAL REGISTRATION ClinicalTrials.gov NCT00556933.
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Affiliation(s)
- R. Brian Stevens
- Department of Surgery, Wright State University Boonshoft School of Medicine, Dayton, Ohio, United States of America
- * E-mail:
| | - Kirk W. Foster
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Clifford D. Miles
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Andre C. Kalil
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Diana F. Florescu
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - John P. Sandoz
- Department of Surgery, Wright State University Boonshoft School of Medicine, Dayton, Ohio, United States of America
| | - Theodore H. Rigley
- Department of Surgery, Wright State University Boonshoft School of Medicine, Dayton, Ohio, United States of America
| | - Tamer Malik
- Department of Surgery, Wright State University Boonshoft School of Medicine, Dayton, Ohio, United States of America
| | - Lucile E. Wrenshall
- Department of Surgery, Wright State University Boonshoft School of Medicine, Dayton, Ohio, United States of America
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A randomized 2×2 factorial trial, part 1: single-dose rabbit antithymocyte globulin induction may improve renal transplantation outcomes. Transplantation 2015; 99:197-209. [PMID: 25083614 PMCID: PMC4281164 DOI: 10.1097/tp.0000000000000250] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Supplemental digital content is available in the text. Background We conducted a randomized and unblinded 2×2 sequential-factorial trial, composed of an induction arm (part 1) comparing single-dose (SD) versus divided-dose rabbit antithymocyte globulin (rATG), and a maintenance arm (part 2) comparing tacrolimus minimization versus withdrawal. We report the long-term safety and efficacy of SD-rATG induction in the context of early steroid withdrawal and tacrolimus minimization or withdrawal. Methods Patients (n=180) received 6 mg/kg rATG, SD or four alternate-day doses (1.5 mg/kg/dose), with early steroid withdrawal and tacrolimus or sirolimus maintenance. After 6 months targeted maintenance levels were tacrolimus, 2 to 4 ng/mL and sirolimus, 4 to 6 ng/mL or, if calcineurin inhibitor–withdrawn, sirolimus 8 to 12 ng/mL with mycophenolate mofetil 2 g two times per day. Primary endpoints were renal function (abbreviated modification of diet in renal disease) and chronic graft histopathology (Banff). Secondary endpoints included patient survival, graft survival, biopsy-proven rejection, and infectious or noninfectious complications. Results Follow-up averaged longer than 4 years. Tacrolimus or sirolimus and mycophenolate mofetil exposure was identical between groups. The SD-rATG associated with improved renal function (2-36 months; P<0.001) in deceased donor recipients. The SD-rATG associated with quicker lymphocyte, CD4 T cell, and CD4-CD8 recovery and fewer infections. Cox multivariate hazard modeling showed divided-dose–rATG (P=0.019), deceased donor (P=0.003), serious infection (P=0.0.018), and lower lymphocyte count (P=0.001) associated with increased mortality. Patients with all four covariates showed a 27-fold increased likelihood of death (P=0.00002). Chronic graft histopathology, rejection rates, and death-censored graft survival were not significantly different between groups. Conclusion The SD-rATG induction improves the 3-year renal function in recipients of deceased donor kidneys. This benefit, along with possibly improved patient survival and fewer infections suggest that how rATG is administered may impact its efficacy and safety.
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Halleck F, Duerr M, Waiser J, Huber L, Matz M, Brakemeier S, Liefeldt L, Neumayer HH, Budde K. An evaluation of sirolimus in renal transplantation. Expert Opin Drug Metab Toxicol 2012; 8:1337-56. [PMID: 22928953 DOI: 10.1517/17425255.2012.719874] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Sirolimus is a powerful antiproliferative immunosuppressive drug approved for the prevention of kidney allograft rejection. By its unique mechanism of action, sirolimus provides a multitude of clinical potential and has been used effectively in different drug combinations. Extensive experience has been gained regarding the best timing of its application, side effect profile and potential benefits and limitations compared with other immunosuppressive drugs. AREAS COVERED The authors evaluate the recent experience with sirolimus in kidney transplantation. Pivotal randomized controlled trials were used to provide an overview with special attention to pharmacokinetic and dynamic aspects of sirolimus, its current clinical use as well as perspectives for its future role. EXPERT OPINION Sirolimus enriches the possibilities of immunosuppressive therapies after renal transplantation. Beneficial effects toward kidney function by allowing CNI sparing, lower incidence of malignancies and less viral infections have been suggested. Sirolimus should be used cautiously in de novo patients for reasons of wound healing. An early conversion to a sirolimus-based CNI-free regimen has shown promising results, whereas late conversion is more challenging. Finally, sirolimus-associated side effects are causing tolerability concerns and frequent discontinuations. Future research should aim to better define the therapeutic window and those patients most likely to benefit.
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Affiliation(s)
- Fabian Halleck
- Department of Nephrology, Charité Universitätsmedizin, Berlin, Germany.
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Rahal EA, Chakhtoura M, Abu Dargham R, Khauli RB, Medawar W, Abdelnoor AM. Advantages of Sirolimus in a Calcineurin-Inhibitor Minimization Protocol for the Immunosuppressive Management of Kidney Allograft Recipients. ACTA ACUST UNITED AC 2011. [DOI: 10.5402/2011/536484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A myriad of immunosuppressive agents is currently available for the management of graft recipients; however, a consensus on the optimum immunopharmacological plan is nonextant. Twenty kidney recipients on quadruple (mycophenolate mofetil, prednisone, cyclosporine A or tacrolimus, and sirolimus) therapy and 85 on triple therapy where sirolimus was excluded were analyzed for graft rejection or loss within a posttransplant surveillance period of 3 years. Only 1 of 20 recipients (5%) on quadruple therapy experienced a rejection episode. On the other hand, 13 of 85 recipients (15.3%) on triple therapy had a rejection episode or lost the graft. Overall, 14 of 105 recipients (13.3%) experienced a rejection episode or kidney loss. Our observations indicate that an immunosuppressive regimen including sirolimus is advantageous for the management of kidney allograft recipients in the short term.
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Affiliation(s)
- Elias A. Rahal
- Department of Microbiology and Immunology, Faculty of Medicine, American University of Beirut, 1107 2020 Beirut, Lebanon
| | - Marita Chakhtoura
- Department of Microbiology and Immunology, Faculty of Medicine, American University of Beirut, 1107 2020 Beirut, Lebanon
| | - Rana Abu Dargham
- Department of Surgery, Faculty of Medicine, American University of Beirut, 1107 2020 Beirut, Lebanon
| | - Raja B. Khauli
- Department of Surgery, Faculty of Medicine, American University of Beirut, 1107 2020 Beirut, Lebanon
| | - Walid Medawar
- Department of Internal Medicine, Faculty of Medicine, American University of Beirut, 1107 2020 Beirut, Lebanon
| | - Alexander M. Abdelnoor
- Department of Microbiology and Immunology, Faculty of Medicine, American University of Beirut, 1107 2020 Beirut, Lebanon
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