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Udomkarnjananun S, Schagen MR, Volarević H, van de Velde D, Dieterich M, Matic M, Baan CC, Reinders MEJ, de Winter BCM, Hesselink DA. Prediction of the Intra-T Lymphocyte Tacrolimus Concentration after Kidney Transplantation with Population Pharmacokinetic Modeling. Clin Pharmacol Ther 2024. [PMID: 39139076 DOI: 10.1002/cpt.3419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 07/29/2024] [Indexed: 08/15/2024]
Abstract
The intracellular tacrolimus concentration in CD3+ T lymphocytes is proposed to be a better representative of the active component of tacrolimus than the whole blood concentration. However, intracellular measurements are complicated. Therefore, the aim of this study was to describe the relationship between intracellular and whole blood tacrolimus concentrations in a population pharmacokinetic model. Twenty-eight de novo kidney transplant recipients, treated with a once-daily oral extended-release tacrolimus formulation, were followed during the first-month post-transplantation. Additional whole blood and intracellular tacrolimus concentrations were measured at day 6 ± 1 (pre-dose, 4 and 8 hours post-dose) and day 14 ± 3 (pre-dose) post-transplantation. Pharmacokinetic analysis was performed using nonlinear mixed effects modeling software (NONMEM). The ratio between intracellular (n = 109) and whole blood (n = 248) concentrations was best described by a two-compartment whole blood model with an additional intracellular compartment without mass transfer from the central compartment. The ratio remained stable over time. Prednisolone dose influenced the absorption rate of tacrolimus, while hemoglobin, CYP3A4*22 allele carrier, and CYP3A5 expresser status were associated with the oral clearance of tacrolimus (P-value < 0.001). Furthermore, the intracellular tacrolimus concentrations were correlated with the intracellular production of interleukin-2 (P-value 0.015). The intracellular tacrolimus concentration can be predicted from a measured whole blood concentration using this model, without the need for repeated intracellular measurements. This knowledge is particularly important when the intracellular concentration is ready to be implemented into clinical practice, to overcome the complexities of cell isolation and analytical methods.
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Affiliation(s)
- Suwasin Udomkarnjananun
- Division of Nephrology, Department of Medicine, Faculty of Medicine, Thai Red Cross Society, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
- Department of Internal Medicine, Erasmus MC Transplant Institute, University Medical Center, Rotterdam, The Netherlands
| | - Maaike R Schagen
- Department of Internal Medicine, Erasmus MC Transplant Institute, University Medical Center, Rotterdam, The Netherlands
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
| | - Helena Volarević
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Daan van de Velde
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Marjolein Dieterich
- Department of Internal Medicine, Erasmus MC Transplant Institute, University Medical Center, Rotterdam, The Netherlands
| | - Maja Matic
- Department of Clinical Chemistry, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Carla C Baan
- Department of Internal Medicine, Erasmus MC Transplant Institute, University Medical Center, Rotterdam, The Netherlands
| | - Marlies E J Reinders
- Department of Internal Medicine, Erasmus MC Transplant Institute, University Medical Center, Rotterdam, The Netherlands
| | - Brenda C M de Winter
- Rotterdam Clinical Pharmacometrics Group, Rotterdam, The Netherlands
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Dennis A Hesselink
- Department of Internal Medicine, Erasmus MC Transplant Institute, University Medical Center, Rotterdam, The Netherlands
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Dal Lago S, Brani P, Ietto G, Dalla Gasperina D, Gianfagna F, Giaroni C, Bosi A, Drago Ferrante F, Genoni A, Manzoor HZ, Ambrosini A, De Cicco M, Quartarone CD, Khemara S, Carcano G, Maggi F, Baj A. Torque Teno Virus: A Promising Biomarker in Kidney Transplant Recipients. Int J Mol Sci 2024; 25:7744. [PMID: 39062987 PMCID: PMC11277443 DOI: 10.3390/ijms25147744] [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: 05/08/2024] [Revised: 07/08/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
Torque Teno Virus (TTV) is a ubiquitous component of the human virome, not associated with any disease. As its load increases when the immune system is compromised, such as in kidney transplant (KT) recipients, TTV load monitoring has been proposed as a method to assess immunosuppression. In this prospective study, TTV load was measured in plasma and urine samples from 42 KT recipients, immediately before KT and in the first 150 days after it. Data obtained suggest that TTV could be a relevant marker for evaluating immune status and could be used as a guide to predict the onset of infectious complications in the follow-up of KT recipients. Since we observed no differences considering distance from transplantation, while we found a changing trend in days before viral infections, we suggest to consider changes over time in the same subjects, irrespective of time distance from transplantation.
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Affiliation(s)
- Sara Dal Lago
- Nephrology Department, ASST Sette Laghi, University of Insubria, 21100 Varese, Italy
| | - Paola Brani
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
| | - Giuseppe Ietto
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
| | - Daniela Dalla Gasperina
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
| | - Francesco Gianfagna
- Department of Medicine and Surgery, University of Insubria, 21100 Varese, Italy
- Mediterranea Cardiocentro, 80122 Napoli, Italy
| | - Cristina Giaroni
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
| | - Annalisa Bosi
- Department of Medicine and Surgery, University of Insubria, 21100 Varese, Italy
| | | | - Angelo Genoni
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
| | - Hafza Zahira Manzoor
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
| | - Andrea Ambrosini
- Nephrology Department, ASST Sette Laghi, University of Insubria, 21100 Varese, Italy
| | - Marco De Cicco
- Nephrology Department, ASST Sette Laghi, University of Insubria, 21100 Varese, Italy
| | | | - Sara Khemara
- Nephrology Department, ASST Sette Laghi, University of Insubria, 21100 Varese, Italy
| | - Giulio Carcano
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
| | - Fabrizio Maggi
- Laboratory of Virology, National Institute for Infectious Diseases L. Spallanzani—IRCCS, 00149 Rome, Italy
| | - Andreina Baj
- Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy
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Lhermitte R, Le Daré B, Laval F, Lemaitre F, Troussier B, Morin MP, Vigneau C, Chemouny JM, Bacle A. A pharmacist-led intervention to improve kidney transplant recipient outcomes and identify patients at risk of highly variable trough tacrolimus levels: a cohort study. Eur J Hosp Pharm 2024; 31:314-320. [PMID: 36737230 PMCID: PMC11265551 DOI: 10.1136/ejhpharm-2022-003625] [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: 11/18/2022] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES Given the positive impact of appropriate medication management on graft outcome and therefore of patient survival and graft function, the pharmacist's role in the kidney transplantation team has evolved over recent decades. The primary objective of this study was to determine whether pharmacist-led intervention after kidney transplantation is associated with a lower graft rejection rate and intra-patient variation in tacrolimus trough concentrations (Cmin). The study's secondary objective was to develop a questionnaire to identify patients at risk for highly variable Cmin. METHODS We retrospectively analysed kidney transplant recipients at Rennes University Hospital (France) between January 2013 and December 2020. Patients who received pharmacist-led education (intervention group, n=139) were compared with patients who did not (control group, n=131), according to graft survival at 1 year post-transplant, coefficient of variation (%CV) for the tacrolimus Cmin, age, sex, length of hospital stay post-transplantation, body mass index, and Charlson Comorbidity Index. In the intervention group, a questionnaire assessing patient knowledge was introduced to compare scores with the %CV. RESULTS In the intervention group, 1 year post-transplant graft survival was higher (95.7% vs 88.5%, p=0.0289) and patients had fewer variabilities in Cmin. The %CV was correlated with questionnaire scores (r=-0.9758, p<0.0001). CONCLUSIONS Pharmacist-led interventions may have contributed to improved graft survival and patient management of immunosuppressants. Because %CV correlates with the patient questionnaire score, its introduction could be useful in identifying kidney transplant patients who would benefit most from a pharmacist-led patient education.
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Affiliation(s)
| | - Brendan Le Daré
- Service Hospitalo-Universitaire de Pharmacie, Rennes, France
- NuMeCan, Rennes, France
| | - Florian Laval
- Service Hospitalo-Universitaire de Pharmacie, Rennes, France
| | - Florian Lemaitre
- Department of Clinical and Biological Pharmacology and Pharmacovigilance, Clinical Investigation Center CIC-P 1414, Rennes, France
| | | | | | - Cécile Vigneau
- Univ Rennes, CHU Rennes, INSERM, EHESP, Irset-UMR_S 1085, 35000, Rennes, France, Rennes, France
| | - Jonathan M Chemouny
- Univ Rennes, CHU Rennes, INSERM, EHESP, Irset-UMR_S 1085, 35000, Rennes, France, Rennes, France
| | - Astrid Bacle
- Service Hospitalo-Universitaire de Pharmacie, Rennes, France
- Univ Rennes, CHU Rennes, INSERM, EHESP, Irset-UMR_S 1085, 35000, Rennes, France, Rennes, France
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4
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Rosiewicz KS, Blazquez-Navarro A, Kaliszczyk S, Bauer C, Or-Guil M, Viebahn R, Zgoura P, Reinke P, Roch T, Hugo C, Westhoff T, Thieme C, Stervbo U, Babel N. Interactions of TTV with BKV, CMV, EBV, and HHV-6A and their impact on post-transplant graft function in kidney transplant recipients. FRONTIERS IN TRANSPLANTATION 2024; 3:1393838. [PMID: 38993745 PMCID: PMC11235294 DOI: 10.3389/frtra.2024.1393838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 05/24/2024] [Indexed: 07/13/2024]
Abstract
Background Mono and combined reactivation of latent viruses occurs frequently under immunosuppressive therapy in kidney transplant patients. Recently, monitoring torque teno virus (TTV) reactivation came more into focus as a potential biomarker for immune status. The surrogate characteristics of TTV reactivation on acute rejection, and the combined reactivation with other latent viruses such as cytomegalovirus (CMV), human BK virus (BKV), Epstein-Barr virus (EBV), and human herpes virus-6A (HHV-6A) on allograft function, are unknown so far. Methods Blood samples from 93 kidney transplant recipients obtained during the first post-transplant year were analyzed for TTV/BKV/CMV/EBV/HHV-6A load. Clinical characteristics, including graft function [glomerular filtration rate (GFR)], were collected in parallel. Results TTV had the highest prevalence and viral loads at 100% and a mean of 5.72 copies/ml (cp/ml) (log10). We found 28.0%, 26.9%, 7.5%, and 51.6% of simultaneous reactivation of TTV with BKV, CMV, EBV, and HHV-6, respectively. These combined reactivations were not associated with a significantly reduced estimated GFR at month 12. Of interest, patients with lower TTV loads <5.0 cp/ml (log10) demonstrated not only a higher incidence of acute rejection, but also an unexpected significantly earlier occurrence and higher incidence of BKV and HHV-6A reactivation. Correlations between TTV loads, other latent viruses, and immunosuppressive medication were only significant from 6 months after transplant. Conclusion We were able to observe and support previously introduced TTV load thresholds predicting kidney allograft rejection. However, due to a possible delayed relation between immunosuppressive medication and TTV viral load adaptation, the right time points to start using TTV as a biomarker might need to be further clarified by other and better designed studies.
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Affiliation(s)
- Kamil S. Rosiewicz
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
| | - Arturo Blazquez-Navarro
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
- Center for Translational Medicine, Universitätsklinikum der Ruhr-Universität Bochum, Medizinische Klinik I, Herne, Germany
| | - Sviatlana Kaliszczyk
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
- Center for Translational Medicine, Universitätsklinikum der Ruhr-Universität Bochum, Medizinische Klinik I, Herne, Germany
| | | | - Michal Or-Guil
- Institute of Medical Immunology, Charité — Universitätsmedizin Berlin, Berlin, Germany
| | - Richard Viebahn
- Chirurgische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Panagiota Zgoura
- Chirurgische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Petra Reinke
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
| | - Toralf Roch
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Hugo
- Universitätsklinikum Carl Gustav Carus, Medizinische Klinik III — Bereich Nephrologie, Dresden, Germany
| | - Timm Westhoff
- Center for Translational Medicine, Universitätsklinikum der Ruhr-Universität Bochum, Medizinische Klinik I, Herne, Germany
| | - Constantin Thieme
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
| | - Ulrik Stervbo
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
- Center for Translational Medicine, Universitätsklinikum der Ruhr-Universität Bochum, Medizinische Klinik I, Herne, Germany
| | - Nina Babel
- Berlin Center for Advanced Therapies (BeCAT), Charité — Universitätsmedizin Berlin, Berlin, Germany
- Center for Translational Medicine, Universitätsklinikum der Ruhr-Universität Bochum, Medizinische Klinik I, Herne, Germany
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5
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Centanni M, Reijnhout N, Thijs A, Karlsson MO, Friberg LE. Pharmacogenetic Testing or Therapeutic Drug Monitoring: A Quantitative Framework. Clin Pharmacokinet 2024; 63:871-884. [PMID: 38842789 PMCID: PMC11222190 DOI: 10.1007/s40262-024-01382-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2024] [Indexed: 06/07/2024]
Abstract
BACKGROUND Pharmacogenetic profiling and therapeutic drug monitoring (TDM) have both been proposed to manage inter-individual variability (IIV) in drug exposure. However, determining the most effective approach for estimating exposure for a particular drug remains a challenge. This study aimed to quantitatively assess the circumstances in which pharmacogenetic profiling may outperform TDM in estimating drug exposure, under three sources of variability (IIV, inter-occasion variability [IOV], and residual unexplained variability [RUV]). METHODS Pharmacokinetic models were selected from the literature corresponding to drugs for which pharmacogenetic profiling and TDM are both clinically considered approaches for dose individualization. The models were used to simulate relevant drug exposures (trough concentration or area under the curve [AUC]) under varying degrees of IIV, IOV, and RUV. RESULTS Six drug cases were selected from the literature. Model-based simulations demonstrated that the percentage of patients for whom pharmacogenetic exposure prediction is superior to TDM differs for each drug case: tacrolimus (11.0%), tamoxifen (12.7%), efavirenz (49.2%), vincristine (49.6%), risperidone (48.1%), and 5-fluorouracil (5-FU) (100%). Generally, in the presence of higher unexplained IIV in combination with lower RUV and IOV, exposure was best estimated by TDM, whereas, under lower unexplained IIV in combination with higher IOV or RUV, pharmacogenetic profiling was preferred. CONCLUSIONS For the drugs with relatively low RUV and IOV (e.g., tamoxifen and tacrolimus), TDM estimated true exposure the best. Conversely, for drugs with similar or lower unexplained IIV (e.g., efavirenz or 5-FU, respectively) combined with relatively high RUV, pharmacogenetic profiling provided the most accurate estimate for most patients. However, genotype prevalence and the relative influence of genotypes on the PK, as well as the ability of TDM to accurately estimate AUC with a limited number of samples, had an impact. The results could be used to support clinical decision making when considering other factors, such as the probability for severe side effects.
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Affiliation(s)
- Maddalena Centanni
- Department of Pharmacy, Uppsala University, Box 580, 751 23, Uppsala, Sweden
| | - Niels Reijnhout
- Department of Pharmacy, Uppsala University, Box 580, 751 23, Uppsala, Sweden
| | - Abel Thijs
- Department of Internal Medicine, Amsterdam UMC, Location VU University, Amsterdam, The Netherlands
| | - Mats O Karlsson
- Department of Pharmacy, Uppsala University, Box 580, 751 23, Uppsala, Sweden
| | - Lena E Friberg
- Department of Pharmacy, Uppsala University, Box 580, 751 23, Uppsala, Sweden.
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6
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Maslauskiene R, Vaiciuniene R, Radzeviciene A, Tretjakovs P, Gersone G, Stankevicius E, Bumblyte IA. The Influence of Tacrolimus Exposure and Metabolism on the Outcomes of Kidney Transplants. Biomedicines 2024; 12:1125. [PMID: 38791087 PMCID: PMC11117915 DOI: 10.3390/biomedicines12051125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/10/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
Tacrolimus (TAC) has a narrow therapeutic window and patient-specific pharmacokinetic variability. In our study, we analyzed the association between TAC exposure, metabolism, and kidney graft outcomes (function, rejection, and histological lesions). TAC trough (C0), coefficient of variation (TAC CV), concentration/dose ratio (C/D), and biomarkers related to kidney injury molecule-1 (KIM-1) and neutrophil gelatinase lipocalin (NGAL) were analyzed. We examined 174 patients who were subjected to a triple immunosuppressive regimen and underwent kidney transplantation between 2017 and 2022. Surveillance biopsies were performed at the time of kidney implantation and at three and twelve months after transplantation. We classified patients based on their Tac C/D ratios, classifying them as fast (C/D ratio < 1.05 ng/mL × 1/mg) or slow (C/D ratio ≥ 1.05 ng/mL × 1/mg) metabolizers. TAC exposure/metabolism did not significantly correlate with interstitial fibrosis/tubular atrophy (IF/TA) progression during the first year after kidney transplantation. TAC CV third tertile was associated with a higher chronicity score at one-year biopsy. TAC C/D ratio at three months and Tac C0 at six months were associated with rejection during the first year after transplantation. A fast TAC metabolism at six months was associated with reduced kidney graft function one year (OR: 2.141, 95% CI: 1.044-4.389, p = 0.038) and two years after transplantation (OR: 4.654, 95% CI: 1.197-18.097, p = 0.026), and TAC CV was associated with reduced eGFR at three years. uNGAL correlated with IF/TA and chronicity scores at three months and negatively correlated with TAC C0 and C/D at three months and one year. Conclusion: Calculating the C/D ratio at three and six months after transplantation may help to identify patients at risk of suffering acute rejection and deterioration of graft function.
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Affiliation(s)
- Rima Maslauskiene
- Department of Nephrology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania; (R.V.); (I.A.B.)
| | - Ruta Vaiciuniene
- Department of Nephrology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania; (R.V.); (I.A.B.)
| | - Aurelija Radzeviciene
- Institute of Physiology and Pharmacology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania; (A.R.); (E.S.)
| | - Peteris Tretjakovs
- Department of Human Physiology and Biochemistry, Riga Stradins University, LV-1007 Riga, Latvia; (P.T.); (G.G.)
| | - Gita Gersone
- Department of Human Physiology and Biochemistry, Riga Stradins University, LV-1007 Riga, Latvia; (P.T.); (G.G.)
| | - Edgaras Stankevicius
- Institute of Physiology and Pharmacology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania; (A.R.); (E.S.)
| | - Inga Arune Bumblyte
- Department of Nephrology, Medical Academy, Lithuanian University of Health Sciences, LT-44307 Kaunas, Lithuania; (R.V.); (I.A.B.)
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7
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Rodríguez-Espinosa D, Broseta JJ, Montagud-Marrahí E, Arana C, Ferrer J, Cuatrecasas M, Garcia-Criado Á, Amor AJ, Diekmann F, Ventura-Aguiar P. Tacrolimus's Time Below Therapeutic Range Is Associated With Acute Pancreatic Graft Rejection and the Development of De Novo Donor-specific Antibodies. Transpl Int 2024; 37:12591. [PMID: 38694489 PMCID: PMC11062183 DOI: 10.3389/ti.2024.12591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/11/2024] [Indexed: 05/04/2024]
Abstract
Tacrolimus is pivotal in pancreas transplants but poses challenges in maintaining optimal levels due to recipient differences. This study aimed to explore the utility of time spent below the therapeutic range and intrapatient variability in predicting rejection and de novo donor-specific antibody (dnDSA) development in pancreas graft recipients. This retrospective unicentric study included adult pancreas transplant recipients between January 2006 and July 2020. Recorded variables included demographics, immunosuppression details, HLA matching, biopsy results, dnDSA development, and clinical parameters. Statistical analysis included ROC curves, sensitivity, specificity, and predictive values. A total of 131 patients were included. Those with biopsy-proven acute rejection (BPAR, 12.2%) had more time (39.9% ± 24% vs. 25.72% ± 21.57%, p = 0.016) and tests (41.95% ± 13.57% vs. 29.96% ± 17.33%, p = 0.009) below therapeutic range. Specific cutoffs of 31.5% for time and 34% for tests below the therapeutic range showed a high negative predictive value for BPAR (93.98% and 93.1%, respectively). Similarly, patients with more than 34% of tests below the therapeutic range were associated with dnDSA appearance (38.9% vs. 9.4%, p = 0.012; OR 6.135, 1.346-27.78). In pancreas transplantation, maintaining optimal tacrolimus levels is crucial. Suboptimal test percentages below the therapeutic range prove valuable in identifying acute graft rejection risk.
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Affiliation(s)
- Diana Rodríguez-Espinosa
- Department of Nephrology and Renal Transplantation, Hospital Clínic de Barcelona, Barcelona, Spain
- Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - José Jesús Broseta
- Department of Nephrology and Renal Transplantation, Hospital Clínic de Barcelona, Barcelona, Spain
- Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Enrique Montagud-Marrahí
- Department of Nephrology and Renal Transplantation, Hospital Clínic de Barcelona, Barcelona, Spain
- Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Carolt Arana
- Department of Nephrology and Renal Transplantation, Hospital Clínic de Barcelona, Barcelona, Spain
- Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Joana Ferrer
- Department of Hepatobiliopancreatic Surgery and Liver Transplant, Hospital Clínic, Barcelona, Spain
| | | | | | - Antonio J. Amor
- Diabetes Unit, Department of Endocrinology and Nutrition, Hospital Clínic Barcelona, Barcelona, Spain
| | - Fritz Diekmann
- Department of Nephrology and Renal Transplantation, Hospital Clínic de Barcelona, Barcelona, Spain
- Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Pedro Ventura-Aguiar
- Department of Nephrology and Renal Transplantation, Hospital Clínic de Barcelona, Barcelona, Spain
- Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
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8
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Alam A, van Zyl JS, Patel R, Jamil AK, Felius J, Carey SA, Gottlieb RL, Guerrero-Miranda CY, Kale P, Hall SA, Sam T. Three-year outcomes of de novo tacrolimus extended-release tablets (LCPT) compared to twice-daily tacrolimus in adult heart transplantation. Transpl Immunol 2024; 83:102009. [PMID: 38325525 DOI: 10.1016/j.trim.2024.102009] [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: 10/13/2023] [Revised: 01/31/2024] [Accepted: 02/03/2024] [Indexed: 02/09/2024]
Abstract
BACKGROUND Extended-release tacrolimus for prophylaxis of allograft rejection in heart transplant (HT) recipients is currently not FDA-approved. One such extended-release formulation of tacrolimus known as LCPT allows once-daily dosing and improves bioavailability compared to immediate-release (IR-) tacrolimus. We compared long-term efficacy and safety of LCPT to IR-tacrolimus applied de novo in adult OHT recipients. METHODS 25 prospective recipients on LCPT at our center from 2017 to 2019 were matched 1:2 with historical control recipients treated with IR-tacrolimus based on age, gender, and baseline creatinine. The primary composite outcome of death, acute cellular rejection, and/or new graft dysfunction within 3 years following transplant was compared between groups using non-inferiority analysis. RESULTS LCPT demonstrated non-inferiority to IR-tacrolimus, with a primary outcome risk reduction of 16% (90%CI, -37%, -1%, non-inferiority p = 0.002) up to 3 years following heart transplant. Up to 3-years post-transplant, 14 patients remained on once-daily LCPT and 10 patients were switched to IR-tacrolimus due to lack of insurance coverage. There were no significant differences in the rate of chronic kidney disease requiring dialysis, cytomegalovirus requiring treatment, cardiac allograft vasculopathy, and malignancy within 3 years following transplant. CONCLUSION LCPT is non-inferior in efficacy to IR-tacrolimus in heart transplantation with a similar safety profile. Narrowly-constrained FDA labels specific to kidney transplant remain a barrier to consistent access to many immunosuppressant medications for recipients of non-kidney solid organs. We recommend the FDA consider developing facile pathways for expanding the approved label of extended-release tacrolimus formulations to heart transplant recipients.
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Affiliation(s)
- Amit Alam
- Division of Cardiology, New York University, New York City, NY, USA
| | - Johanna S van Zyl
- Texas A&M Health Science Center, Dallas, TX, USA; Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, TX, USA
| | - Raksha Patel
- Department of Pharmacy, Baylor University Medical Center, Dallas, TX, USA
| | - Aayla K Jamil
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, TX, USA
| | - Joost Felius
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, TX, USA
| | - Sandra A Carey
- Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Dallas, TX, USA
| | - Robert L Gottlieb
- Texas A&M Health Science Center, Dallas, TX, USA; Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, TX, USA; Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Dallas, TX, USA; Baylor Scott & White Heart and Vascular Hospital, Dallas, TX, USA
| | - Cesar Y Guerrero-Miranda
- Texas A&M Health Science Center, Dallas, TX, USA; Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Dallas, TX, USA; Baylor Scott & White Heart and Vascular Hospital, Dallas, TX, USA
| | - Parag Kale
- Texas A&M Health Science Center, Dallas, TX, USA; Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Dallas, TX, USA; Baylor Scott & White Heart and Vascular Hospital, Dallas, TX, USA
| | - Shelley A Hall
- Texas A&M Health Science Center, Dallas, TX, USA; Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Dallas, TX, USA; Baylor Scott & White Heart and Vascular Hospital, Dallas, TX, USA
| | - Teena Sam
- Department of Pharmacy, Baylor University Medical Center, Dallas, TX, USA.
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9
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Alonge M, Coller JK, Reuter SE, Jesudason S, Sallustio BC. Determining Plasma Tacrolimus Concentrations Using High-Performance LC-MS/MS in Renal Transplant Recipients. Ther Drug Monit 2024; 46:49-56. [PMID: 38193880 DOI: 10.1097/ftd.0000000000001135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/07/2023] [Indexed: 01/10/2024]
Abstract
BACKGROUND Whole-blood therapeutic drug monitoring of tacrolimus is conducted to maintain tacrolimus concentrations within a safe and effective range. Changes in hematocrit cause variability in blood concentrations of tacrolimus because it is highly bound to erythrocytes. Measuring plasma concentrations may eliminate this variability; however, current methods have limitations owing to the use of cross-reactive immunoassays, plasma separation at nonbiological temperatures, and lack of clinical validation. This study aimed to develop and validate a clinically applicable method to measure plasma tacrolimus concentrations in renal transplant recipients and to examine the concentration differences between genotypic CYP3A5 expressors and nonexpressors. METHODS Plasma tacrolimus concentrations were measured in 9 stable renal transplant recipients who were genotypic CYP3A5 expressors or nonexpressors. Tacrolimus was extracted from plasma using solid-phase extraction, and liquid chromatography-tandem mass spectrometry was used for detection and quantitation. RESULTS This assay was sensitive, selective, and linear between 100 and 5000 ng/L, with intraassay and interassay imprecision and inaccuracy <10% and <5% respectively. The extraction recovery of tacrolimus and ascomycin was 74%. Matrix ion suppression effects were 31.5% and 35% with overall recovery of 50.6% and 48.3% for tacrolimus and ascomycin, respectively. Whole-blood concentrations accounted for approximately 46% of the variation in plasma concentrations in CYP3A5 expressors and nonexpressors. No difference in dose-adjusted whole-blood and plasma concentrations was observed between CYP3A5 expressors and nonexpressors. CONCLUSIONS This assay is clinically applicable with excellent performance and demonstrated that tacrolimus plasma concentrations highly correlated with whole-blood concentrations.
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Affiliation(s)
- Mirabel Alonge
- Department of Clinical Pharmacology, The Basil Hetzel Institute for Translational Health Research, The Queen Elizabeth Hospital, Woodville South, Australia
- Discipline of Pharmacology, School of Biomedicine, The University of Adelaide, Adelaide, Australia
| | - Janet K Coller
- Discipline of Pharmacology, School of Biomedicine, The University of Adelaide, Adelaide, Australia
| | - Stephanie E Reuter
- Clinical and Health Sciences, University of South Australia, Adelaide, Australia; and
| | - Shilpanjali Jesudason
- Central and Northern Adelaide Renal and Transplantation Service, Royal Adelaide Hospital, Adelaide, Australia
| | - Benedetta C Sallustio
- Discipline of Pharmacology, School of Biomedicine, The University of Adelaide, Adelaide, Australia
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10
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Reineke M, Morath C, Speer C, Rudek M, Bundschuh C, Klein JA, Mahler CF, Kälble F, Nusshag C, Beimler J, Zeier M, Bartenschlager R, Schnitzler P, Benning L. Dynamics of torque teno virus load in kidney transplant recipients with indication biopsy and therapeutic modifications of immunosuppression. Front Med (Lausanne) 2024; 11:1337367. [PMID: 38327708 PMCID: PMC10847215 DOI: 10.3389/fmed.2024.1337367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/04/2024] [Indexed: 02/09/2024] Open
Abstract
Following kidney transplantation, lifelong immunosuppressive therapy is essential to prevent graft rejection. On the downside, immunosuppression increases the risk of severe infections, a major cause of death among kidney transplant recipients (KTRs). To improve post-transplant outcomes, adequate immunosuppressive therapy is therefore a challenging but vital aspect of clinical practice. Torque teno virus load (TTVL) was shown to reflect immune competence in KTRs, with low TTVL linked to an elevated risk for rejections and high TTVL associated with infections in the first year post-transplantation. Yet, little is known about the dynamics of TTVL after the first year following transplantation and how TTVL changes with respect to short-term modifications in immunosuppressive therapy. Therefore, we quantified TTVL in 106 KTRs with 108 clinically indicated biopsies, including 65 biopsies performed >12 months post-transplantation, and correlated TTVL to histopathology. In addition, TTVL was quantified at 7, 30, and 90 days post-biopsy to evaluate how TTVL was affected by changes in immunosuppression resulting from interventions based on histopathological reporting. TTVL was highest in patients biopsied between 1 and 12 months post-transplantation (N = 23, median 2.98 × 107 c/mL) compared with those biopsied within 30 days (N = 20, median 7.35 × 103 c/mL) and > 1 year post-transplantation (N = 65, median 1.41 × 104 c/mL; p < 0.001 for both). Patients with BK virus-associated nephropathy (BKVAN) had significantly higher TTVL than patients with rejection (p < 0.01) or other pathologies (p < 0.001). When converted from mycophenolic acid to a mTOR inhibitor following the diagnosis of BKVAN, TTVL decreased significantly between biopsy and 30 and 90 days post-biopsy (p < 0.01 for both). In KTR with high-dose corticosteroid pulse therapy for rejection, TTVL increased significantly between biopsy and 30 and 90 days post-biopsy (p < 0.05 and p < 0.01, respectively). Of note, no significant changes were seen in TTVL within 7 days of changes in immunosuppressive therapy. Additionally, TTVL varied considerably with time since transplantation and among individuals, with a significant influence of age and BMI on TTVL (p < 0.05 for all). In conclusion, our findings indicate that TTVL reflects changes in immunosuppressive therapy, even in the later stages of post-transplantation. To guide immunosuppressive therapy based on TTVL, one should consider inter- and intraindividual variations, as well as potential confounding factors.
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Affiliation(s)
- Marvin Reineke
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Christian Morath
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
- German Center for Infection Research, DZIF, Heidelberg Partner Site, Heidelberg, Germany
| | - Claudius Speer
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
- Department of Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Markus Rudek
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Christian Bundschuh
- Medical Faculty Heidelberg, Department of Infectious Diseases, Virology, Heidelberg University, Heidelberg, Germany
| | - Julian A.F. Klein
- Medical Faculty Heidelberg, Department of Infectious Diseases, Virology, Heidelberg University, Heidelberg, Germany
| | - Christoph F. Mahler
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Florian Kälble
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Christian Nusshag
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Jörg Beimler
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Martin Zeier
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Ralf Bartenschlager
- German Center for Infection Research, DZIF, Heidelberg Partner Site, Heidelberg, Germany
- Medical Faculty Heidelberg, Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Diseases Research, Heidelberg University, Heidelberg, Germany
- Division Virus-Associated Carcinogenesis, German Cancer Research Center, Heidelberg, Germany
| | - Paul Schnitzler
- German Center for Infection Research, DZIF, Heidelberg Partner Site, Heidelberg, Germany
- Medical Faculty Heidelberg, Department of Infectious Diseases, Virology, Heidelberg University, Heidelberg, Germany
| | - Louise Benning
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
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11
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Doorenbos CSE, Jonker J, Hao J, Gore EJ, Kremer D, Knobbe TJ, de Joode AAE, Sanders JSF, Thaunat O, Niesters HGM, Van Leer-Buter CC, Bakker SJL. Smoking, Alcohol Intake and Torque Teno Virus in Stable Kidney Transplant Recipients. Viruses 2023; 15:2387. [PMID: 38140628 PMCID: PMC10748022 DOI: 10.3390/v15122387] [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] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Torque Teno Virus (TTV) is a non-pathogenic virus that is highly prevalent among kidney transplant recipients (KTRs). Its circulating load is associated with an immunological status in KTR and is considered a promising tool for guiding immunosuppression. To allow for optimal guidance, it is important to identify other determinants of TTV load. We aimed to investigate the potential association of smoking and alcohol intake with TTV load. For this cross-sectional study, serum TTV load was measured using PCR in stable kidney transplant recipients at ≥1 year after transplantation, and smoking status and alcohol intake were assessed through questionnaires and measurements of urinary cotinine and ethyl glucuronide. A total of 666 KTRs were included (57% male). A total of 549 KTR (82%) had a detectable TTV load (3.1 ± 1.5 log10 copies/mL). In KTR with a detectable TTV load, cyclosporin and tacrolimus use were positively associated with TTV load (St. β = 0.46, p < 0.001 and St. β = 0.66, p < 0.001, respectively), independently of adjustment for potential confounders. Current smoking and alcohol intake of >20 g/day were negatively associated with TTV load (St. β = -0.40, p = 0.004 and St. β = -0.33, p = 0.009, respectively), independently of each other and of adjustment for age, sex, kidney function, time since transplantation and calcineurin inhibitor use. This strong association of smoking and alcohol intake with TTV suggests a need to account for the smoking status and alcohol intake when applying TTV guided immunosuppression in KTR.
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Affiliation(s)
- Caecilia S. E. Doorenbos
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands; (J.J.)
| | - Jip Jonker
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands; (J.J.)
| | - Jiasi Hao
- Department of Epidemiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Edmund J. Gore
- Department of Medical Microbiology, Division of Clinical Virology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Daan Kremer
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands; (J.J.)
| | - Tim J. Knobbe
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands; (J.J.)
| | - Anoek A. E. de Joode
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands; (J.J.)
| | - Jan Stephan F. Sanders
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands; (J.J.)
| | - Olivier Thaunat
- Department of Transplantation Nephrology and Clinical Immunology Hospices Civils de Lyon, Claude Bernard Lyon I University, INSERM Unit 1111, 69003 Lyon, France
| | - Hubert G. M. Niesters
- Department of Medical Microbiology, Division of Clinical Virology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Coretta C. Van Leer-Buter
- Department of Medical Microbiology, Division of Clinical Virology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Stephan J. L. Bakker
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands; (J.J.)
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12
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Guo Z, Chen Q, Liu J, Li S, Wang H, Tang R, Zhang Z. Effects of CYP3A5 Genotypes on Thrombocytopenia in Liver Transplantation Patients Treated with Tacrolimus. Biomedicines 2023; 11:3088. [PMID: 38002088 PMCID: PMC10669143 DOI: 10.3390/biomedicines11113088] [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: 09/27/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND Thrombocytopenia is a complication after liver transplantation. This study's aims were to evaluate the role of CYP3A5 genotypes on tacrolimus-induced thrombocytopenia after orthotopic liver transplantation. METHODS In this retrospective case-control study, data from 100 patients who underwent deceased-donor liver transplantation (DDLT) were divided into CYP3A5*3 genotype (donor/recipient) tacrolimus fast- (A*/A*, n = 22), intermediate- (A*/GG, n = 20; GG/A*, n = 31) and slow-metabolizer (GG/GG, n = 27) groups. Platelet count changes and prognosis for 180 days after surgery were compared. RESULTS Platelet counts declined significantly after DDLT, especially on postoperative day (POD) 3, and continued at low levels for a week thereafter in all groups. In the GG/GG group, platelet counts on POD3 (50.29 ± 5.44 × 109/L) were the lowest among the groups (A*/A*, 71.00 ± 6.22 × 109/L; A*/GG, 57.95 ± 6.21 × 109/L; GG/A*, 75.90 ± 5.56 × 109/L) (p = 0.006). Compared with the A*/A* genotype, tacrolimus nadir levels were significantly higher in GG/GG genotype patients, who also exhibited a higher incidence of hemorrhage (22.2%, p = 0.011). A combination of a nadir blood concentration of tacrolimus ≥ 4.74 ng/mL and spleen size ≥ 165.5 mm was a risk factor for increased thrombocytopenia after DDLT on POD3, with an AUC of 0.735 (sensitivity, 77.2%; specificity, 41.7%). CONCLUSIONS A high blood concentration of tacrolimus after the early stage of DDLT is a major risk factor for hemorrhage. For the CYP3A5 genotype (GG/GG), controlling the blood concentration of tacrolimus below the target concentration until POD3 can avoid thrombocytopenia-related complications.
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Affiliation(s)
- Zhe Guo
- Department of Liver Critical Care Medicine, Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China; (Z.G.); (S.L.); (H.W.)
| | - Qi Chen
- Department of Geriatric, Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China;
| | - Juan Liu
- Hepatobiliary Pancreatic Center, Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China; (J.L.); (R.T.)
| | - Shan Li
- Department of Liver Critical Care Medicine, Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China; (Z.G.); (S.L.); (H.W.)
| | - He Wang
- Department of Liver Critical Care Medicine, Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China; (Z.G.); (S.L.); (H.W.)
| | - Rui Tang
- Hepatobiliary Pancreatic Center, Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China; (J.L.); (R.T.)
| | - Zhenyu Zhang
- Department of Liver Critical Care Medicine, Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China; (Z.G.); (S.L.); (H.W.)
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13
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Liu F, Aulin LBS, Manson ML, Krekels EHJ, van Hasselt JGC. Unraveling the Effects of Acute Inflammation on Pharmacokinetics: A Model-Based Analysis Focusing on Renal Glomerular Filtration Rate and Cytochrome P450 3A4-Mediated Metabolism. Eur J Drug Metab Pharmacokinet 2023; 48:623-631. [PMID: 37715056 PMCID: PMC10624742 DOI: 10.1007/s13318-023-00852-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND AND OBJECTIVES: Acute inflammation caused by infections or sepsis can impact pharmacokinetics. We used a model-based analysis to evaluate the effect of acute inflammation as represented by interleukin-6 (IL-6) levels on drug clearance, focusing on renal glomerular filtration rate (GFR) and cytochrome P450 3A4 (CYP3A4)-mediated metabolism. METHODS A physiologically based model incorporating renal and hepatic drug clearance was implemented. Functions correlating IL-6 levels with GFR and in vitro CYP3A4 activity were derived and incorporated into the modeling framework. We then simulated treatment scenarios for hypothetical drugs by varying the IL-6 levels, the contribution of renal and hepatic drug clearance, and protein binding. The relative change in observed area under the concentration-time curve (AUC) was computed for these scenarios. RESULTS Inflammation showed opposite effects on drug exposure for drugs eliminated via the liver and kidney, with the effect of inflammation being inversely proportional to the extraction ratio (ER). For renally cleared drugs, the relative decrease in AUC was close to 30% during severe inflammation. For CYP3A4 substrates, the relative increase in AUC could exceed 50% for low-ER drugs. Finally, the impact of inflammation-induced changes in drug clearance is smaller for drugs with a larger unbound fraction. CONCLUSION This analysis demonstrates differences in the impact of inflammation on drug clearance for different drug types. The effects of inflammation status on pharmacokinetics may explain the inter-individual variability in pharmacokinetics in critically ill patients. The proposed model-based analysis may be used to further evaluate the effect of inflammation, i.e., by incorporating the effect of inflammation on other drug-metabolizing enzymes or physiological processes.
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Affiliation(s)
- Feiyan Liu
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Linda B S Aulin
- Department of Clinical Pharmacy and Biochemistry, Institute of Pharmacy, Freie Universitaet Berlin, Berlin, Germany
| | - Martijn L Manson
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Elke H J Krekels
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - J G Coen van Hasselt
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.
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14
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Kim H, Han A, Ahn S, Min SK, Ha J, Min S. Association of high intra-patient variability in tacrolimus exposure with calcineurin inhibitor nephrotoxicity in kidney transplantation. Sci Rep 2023; 13:16502. [PMID: 37783764 PMCID: PMC10545770 DOI: 10.1038/s41598-023-43755-x] [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: 03/14/2023] [Accepted: 09/27/2023] [Indexed: 10/04/2023] Open
Abstract
Tacrolimus intra-patient variability (IPV) is a novel predictive marker for long-term kidney transplantation outcomes. We examined the association between IPV and calcineurin inhibitor (CNI) nephrotoxicity and the impact of pharmacogenes on CNI nephrotoxicity and IPV. Among kidney transplant recipients at our hospital between January 2013 and December 2015, the records of 80 patients who underwent 1-year protocol renal allograft biopsy and agreed to donate blood samples for genetic analysis were retrospectively reviewed. The cohort was divided into the low and high IPV groups based on a coefficient variability cutoff value (26.5%). In multivariate analysis, the IPV group was involved in determining CNI nephrotoxicity (HR 4.55; 95% CI 0.05-0.95; p = 0.043). The 5-year graft survival was superior in the low IPV group than in the high IPV group (100% vs 92.4% respectively, p = 0.044). Analysis of the time above therapeutic range (TATR) showed higher CNI nephrotoxicity in the high IPV with high TATR group than in the low IPV with low TATR group (35.7% versus 6.7%, p = 0.003). Genetic analysis discovered that CYP3A4 polymorphism (rs2837159) was associated with CNI nephrotoxicity (HR 28.23; 95% CI 2.2-355.9; p = 0.01). In conclusion, high IPV and CYP3A4 polymorphisms (rs2837159) are associated with CNI nephrotoxicity.
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Affiliation(s)
- Hyokee Kim
- Department of Surgery, Korea University College of Medicine, Seoul, South Korea
| | - Ahram Han
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Sanghyun Ahn
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Seung-Kee Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Jongwon Ha
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Sangil Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.
- Division of Transplantation and Vascular Surgery, Department of Surgery, Seoul National University Hospital, 101, Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.
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15
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Nguyen TD, Smith NM, Attwood K, Gundroo A, Chang S, Yonis M, Murray B, Tornatore KM. Bayesian optimization of tacrolimus exposure in stable kidney transplant patients. Pharmacotherapy 2023; 43:1032-1042. [PMID: 37452631 PMCID: PMC10592415 DOI: 10.1002/phar.2848] [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: 12/19/2022] [Revised: 05/25/2023] [Accepted: 05/25/2023] [Indexed: 07/18/2023]
Abstract
STUDY OBJECTIVE The objective was to compare tacrolimus AUC0-12 determined by Non-Compartmental Analysis (NCA) using intensive sampling to Maximum a Posteriori-Bayesian (MAP-Bayesian) estimates from robust (n = 9 samples/subject) and sparse (n = 2 samples/subject) sampling in 67 stable KTRs and a validation group of similar patients. DESIGN This open-label, prospective, single center 12-h PK study included nine serial samples collected in KTRs to determine steady-state NCA tacrolimus AUC0-12 . SETTING This study was conducted at a single site within a large, urban hospital in the western New York area. PATIENTS This study described tacrolimus pharmacokinetics in stable kidney transplant recipients on maintenance tacrolimus therapy. INTERVENTION Robust and sparse AUC0-12 estimates by a MAP-Bayesian approach were obtained using the Advanced Dosing Solutions (AdDS) and ADAPT5 freeware. Limited sampling strategies were evaluated using the original population PK model (n = 67), which was also assessed using a validation group (n = 15). AUC0-12 agreement was tested by paired t-tests with intraclass correlation coefficient (ICC) and Bland Altman analysis. MEASUREMENTS AND MAIN RESULTS A total of 35 Black and 32 White stable KTRs (estimated glomerular filtration rate [eGFR] = 55.2 ± 15.7 mL/min/1.73m2 ) received the tacrolimus dose of 3.4 ± 1.7 mg/study with troughs of 6.8 ± 1.8 ng/mL. The NCA-AUC0-12 was 123.8 ± 33.6 μg·h/L compared to MAP-Bayesian estimates for Robust-AUC0-12 of 124.7 ± 33.3 μg·h/L and optimal 2-specimen Sparse-AUC0-12 of 119.7 ± 32.7 μg·h/L for the training group. Comparison of Robust-AUC0-12 to NCA-AUC0-12 had an ICC of 0.96 (p = 0.99) while comparison of Robust-AUC0-12 to Sparse-AUC0-12 using Pre-dose trough [C(t0h )] and 1 h [C(t1h )] resulted in an ICC of 0.93 (p = 0.014). In the validation group, 5 Black and 10 White KTRs (eGFR = 56.4 ± 16.8 mL/min/1.73m2 ) received a mean tacrolimus dose of 1.9 ± 1.2 mg/study with a trough of 6.0 ± 1.7 ng/mL. The validation group's NCA-AUC0-12 (88.4 ± 33.1 μg·h/L) was comparable to Robust-AUC0-12 (85.1 ± 33.8 μg·h/L, ICC = 0.93; p = 0.12) and Sparse-AUC0-12 determined from C(t0h ) and C(t4h ) (86.7 ± 33.9 μg·h/L, ICC = 0.91; p = 0.61). CONCLUSION MAP-Bayesian estimation for patient-specific AUC0-12 using sparse, two-specimen sampling is comparable to NCA and may enhance tacrolimus TDM in stable KTRs.
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Affiliation(s)
- Thomas D. Nguyen
- School of Pharmacy & Pharmaceutical Sciences, University at Buffalo, Buffalo, New York, USA
- New York State Center for Excellence in Bioinformatics and Life Sciences, Buffalo, New York, USA
| | - Nicholas M. Smith
- School of Pharmacy & Pharmaceutical Sciences, University at Buffalo, Buffalo, New York, USA
- New York State Center for Excellence in Bioinformatics and Life Sciences, Buffalo, New York, USA
| | - Kris Attwood
- Biostatistics, School of Public Health and Health Professions, Buffalo, New York, USA
| | - Aijaz Gundroo
- Nephrology Division; Medicine, School of Medicine, and Biomedical Sciences, Buffalo, New York, USA
| | - Shirley Chang
- Nephrology Division; Medicine, School of Medicine, and Biomedical Sciences, Buffalo, New York, USA
- Erie County Medical Center, Buffalo, New York, USA
| | - Mahfuz Yonis
- Nephrology Division; Medicine, School of Medicine, and Biomedical Sciences, Buffalo, New York, USA
- Erie County Medical Center, Buffalo, New York, USA
| | - Brian Murray
- Nephrology Division; Medicine, School of Medicine, and Biomedical Sciences, Buffalo, New York, USA
- Erie County Medical Center, Buffalo, New York, USA
| | - Kathleen M. Tornatore
- School of Pharmacy & Pharmaceutical Sciences, University at Buffalo, Buffalo, New York, USA
- Nephrology Division; Medicine, School of Medicine, and Biomedical Sciences, Buffalo, New York, USA
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16
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Chen D, Yao Q, Chen W, Yin J, Hou S, Tian X, Zhao M, Zhang H, Yang L, Zhou T, Jin P. Population PK/PD model of tacrolimus for exploring the relationship between accumulated exposure and quantitative scores in myasthenia gravis patients. CPT Pharmacometrics Syst Pharmacol 2023; 12:963-976. [PMID: 37060188 PMCID: PMC10349186 DOI: 10.1002/psp4.12966] [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: 09/28/2022] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 04/16/2023] Open
Abstract
Tacrolimus is an important immunosuppressant used in the treatment of myasthenia gravis (MG). However, the population pharmacokinetic (PK) characteristics together with the exposure-response of tacrolimus in the treatment of MG remain largely unknown. In this study, we aimed to develop a population PK/pharmacodynamic (PK/PD) model of tacrolimus in patients with MG, in order to explore the relationships among tacrolimus dose, exposure, and its therapeutic efficacy. The genotype of CYP3A5, Osserman's classification, and status of thymus, as well as demographic characteristics and other biomarkers from laboratory testing were tested as covariate, and simulations were performed based on the final model. The population PK model was described using a one-compartment model with first-order elimination and fixed absorption parameters. CYP3A5 genotype significantly influenced the apparent clearance, and total protein (TP) influenced the apparent volume of distribution as covariates. The quantitative MG scores were characterized by the cumulated area under curve of tacrolimus in a maximum effect function. Osserman's classification was a significant covariate on the initial score of patients with MG. The simulations demonstrated that tacrolimus showed an unsatisfying effect possibly due to insufficient exposure in some patients with MG. A starting dose of 2 mg/d and even higher dose for patients with CYP3A5 *1/*1 and *1/*3 and lower TP level were required for the rapid action of tacrolimus. The population PK/PD model quantitatively described the relationships among tacrolimus dose, exposure, and therapeutic efficacy in patients with MG, which could provide reference for the optimization of tacrolimus dosing regimen at the individual patient level.
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Affiliation(s)
- Di Chen
- Department of PharmacyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical ScienceBeijing Key Laboratory of Assessment of Clinical Drugs Risk and Individual Application (Beijing Hospital)BeijingChina
| | - Qingyu Yao
- Department of PharmaceuticsSchool of Pharmaceutical SciencesPeking UniversityBeijingChina
| | - Wenjun Chen
- Department of PharmaceuticsSchool of Pharmaceutical SciencesPeking UniversityBeijingChina
| | - Jian Yin
- Department of NeurologyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijingChina
| | - Shifang Hou
- Department of NeurologyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijingChina
| | - Xiaoxin Tian
- Department of PharmacyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical ScienceBeijing Key Laboratory of Assessment of Clinical Drugs Risk and Individual Application (Beijing Hospital)BeijingChina
| | - Ming Zhao
- Department of PharmacyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical ScienceBeijing Key Laboratory of Assessment of Clinical Drugs Risk and Individual Application (Beijing Hospital)BeijingChina
| | - Hua Zhang
- Department of NeurologyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesBeijingChina
| | - Liping Yang
- Department of PharmacyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical ScienceBeijing Key Laboratory of Assessment of Clinical Drugs Risk and Individual Application (Beijing Hospital)BeijingChina
| | - Tianyan Zhou
- Department of PharmaceuticsSchool of Pharmaceutical SciencesPeking UniversityBeijingChina
| | - Pengfei Jin
- Department of PharmacyBeijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical ScienceBeijing Key Laboratory of Assessment of Clinical Drugs Risk and Individual Application (Beijing Hospital)BeijingChina
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17
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Schagen MR, Volarevic H, Francke MI, Sassen SDT, Reinders MEJ, Hesselink DA, de Winter BCM. Individualized dosing algorithms for tacrolimus in kidney transplant recipients: current status and unmet needs. Expert Opin Drug Metab Toxicol 2023; 19:429-445. [PMID: 37642358 DOI: 10.1080/17425255.2023.2250251] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 08/17/2023] [Indexed: 08/31/2023]
Abstract
INTRODUCTION Tacrolimus is a potent immunosuppressive drug with many side effects including nephrotoxicity and post-transplant diabetes mellitus. To limit its toxicity, therapeutic drug monitoring (TDM) is performed. However, tacrolimus' pharmacokinetics are highly variable within and between individuals, which complicates their clinical management. Despite TDM, many kidney transplant recipients will experience under- or overexposure to tacrolimus. Therefore, dosing algorithms have been developed to limit the time a patient is exposed to off-target concentrations. AREAS COVERED Tacrolimus starting dose algorithms and models for follow-up doses developed and/or tested since 2015, encompassing both adult and pediatric populations. Literature was searched in different databases, i.e. Embase, PubMed, Web of Science, Cochrane Register, and Google Scholar, from inception to February 2023. EXPERT OPINION Many algorithms have been developed, but few have been prospectively evaluated. These performed better than bodyweight-based starting doses, regarding the time a patient is exposed to off-target tacrolimus concentrations. No benefit in reduced tacrolimus toxicity has yet been observed. Most algorithms were developed from small datasets, contained only a few tacrolimus concentrations per person, and were not externally validated. Moreover, other matrices should be considered which might better correlate with tacrolimus toxicity than the whole-blood concentration, e.g. unbound plasma or intra-lymphocytic tacrolimus concentrations.
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Affiliation(s)
- Maaike R Schagen
- Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, the Netherlands
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
- Erasmus MC, Rotterdam Clinical Pharmacometrics Group, Rotterdam, the Netherlands
| | - Helena Volarevic
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Marith I Francke
- Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, the Netherlands
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Sebastiaan D T Sassen
- Erasmus MC, Rotterdam Clinical Pharmacometrics Group, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Marlies E J Reinders
- Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, the Netherlands
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Dennis A Hesselink
- Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, the Netherlands
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Brenda C M de Winter
- Erasmus MC, Rotterdam Clinical Pharmacometrics Group, Rotterdam, the Netherlands
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
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18
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Querido S, Martins C, Gomes P, Pessanha MA, Arroz MJ, Adragão T, Casqueiro A, Oliveira R, Costa I, Azinheira J, Paixão P, Weigert A. Kinetics of Torque Teno Virus Viral Load Is Associated with Infection and De Novo Donor Specific Antibodies in the First Year after Kidney Transplantation: A Prospective Cohort Study. Viruses 2023; 15:1464. [PMID: 37515152 PMCID: PMC10384556 DOI: 10.3390/v15071464] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 06/25/2023] [Indexed: 07/30/2023] Open
Abstract
Torque teno virus (TTV) was recently identified as a potential biomarker for the degree of immunosuppression, and potentially as a predictor of rejection and infection in solid organ transplant patients. We evaluated TTV viral load in kidney transplant (KT) patients during the first year post-transplant to examine overall kinetics and their relationships with deleterious events, including episodes of infection and the formation of de novo donor-specific antibodies (DSAs). In a single-center, prospective observational cohort study, 81 KT patients were monitored at baseline, week 1, and month 1, 3, 6, 9 and 12, post-KT, and whenever required by clinical events. Kidney function, plasma TTV load, immunoglobulins and lymphocyte subpopulations were assessed at each time point. Twenty-six patients (32.1%) presented a total of 38 infection episodes post-KT. Induction immunosuppression with thymoglobulin, compared to basiliximab, was not associated with more infections (p = 0.8093). Patients with infectious events had lower T-cells (p = 0.0500), CD8+ T-cells (p = 0.0313) and B-cells (p = 0.0009) 1 month post-KT, compared to infection-free patients. Patients with infection also showed higher increases in TTV viral loads between week 1- month 1, post-KT, with TTV viral load variations >2.65 log10 cp/mL predicting the development of infectious events during the 12-month study period (p < 0.0001; sensitivity 99.73%; specificity 83.67%). Patients who developed de novo DSAs had lower TTV DNA viral loads at month 12 after KT, compared to patients who did not develop DSA (3.7 vs. 5.3 log10 cp/mL, p = 0.0023). Briefly, evaluating early TTV viremia is a promising strategy for defining infectious risk in the 1st year post-KT. The availability of standardized commercial real-time PCR assays is crucial to further validate this as an effective tool guiding immunosuppression prescription.
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Affiliation(s)
- Sara Querido
- Renal Transplantation Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, 2790-134 Carnaxide, Portugal
- Infection, Sepsis & Antibiotics Resistance Research Group, CHRC-Comprehensive Health Research Center, NOVA Medical School, Faculdade de Ciências Médicas (NMS|FCM), Universidade NOVA de Lisboa, 1150-082 Lisboa, Portugal
| | - Catarina Martins
- Immune Dysregulation from Pregnancy to Adulthood Research Group, CHRC-Comprehensive Health Research Center, NOVA Medical School, Faculdade de Ciências Médicas (NMS|FCM), Universidade NOVA de Lisboa, 1150-082 Lisboa, Portugal
| | - Perpétua Gomes
- Laboratory of Clinical Microbiology and Molecular Biology, Department of Clinical Pathology, Centro Hospitalar de Lisboa Ocidental, 1349-019 Lisboa, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), IUEM, 2829-511 Almada, Portugal
| | - Maria Ana Pessanha
- Laboratory of Clinical Microbiology and Molecular Biology, Department of Clinical Pathology, Centro Hospitalar de Lisboa Ocidental, 1349-019 Lisboa, Portugal
| | - Maria Jorge Arroz
- Flow Cytometry Laboratory, Department of Clinical Pathology, Centro Hospitalar de Lisboa Ocidental, 1349-019 Lisboa, Portugal
| | - Teresa Adragão
- Renal Transplantation Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, 2790-134 Carnaxide, Portugal
| | - Ana Casqueiro
- Renal Transplantation Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, 2790-134 Carnaxide, Portugal
| | - Regina Oliveira
- Renal Transplantation Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, 2790-134 Carnaxide, Portugal
| | - Inês Costa
- Laboratory of Clinical Microbiology and Molecular Biology, Department of Clinical Pathology, Centro Hospitalar de Lisboa Ocidental, 1349-019 Lisboa, Portugal
| | - Jorge Azinheira
- Laboratory of Biochemistry, Department of Clinical Pathology, Centro Hospitalar de Lisboa Ocidental, 1349-019 Lisboa, Portugal
| | - Paulo Paixão
- Infection, Sepsis & Antibiotics Resistance Research Group, CHRC-Comprehensive Health Research Center, NOVA Medical School, Faculdade de Ciências Médicas (NMS|FCM), Universidade NOVA de Lisboa, 1150-082 Lisboa, Portugal
| | - André Weigert
- Renal Transplantation Unit, Nephrology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, 2790-134 Carnaxide, Portugal
- Pharmacology and Neurosciences Institute, Faculdade de Medicina, Universidade de Lisboa, 1649-004 Lisboa, Portugal
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19
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Reyes NS, Laham G, Boccia N, García G, Jara R, Hermida E, Ricarte C, Diaz C, Soler Pujol G, Poletta FA, Echavarria M. Prospective cohort study of Torque Teno Virus (TTV) viral load kinetics and the association with graft rejection in renal transplant patients. J Clin Virol 2023; 165:105501. [PMID: 37379781 DOI: 10.1016/j.jcv.2023.105501] [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: 01/30/2023] [Revised: 04/13/2023] [Accepted: 05/30/2023] [Indexed: 06/30/2023]
Abstract
INTRODUCTION Graft survival is mainly determined by rejections and infectious complications in transplant recipients. Torque Teno Virus (TTV), a nonpathogenic and ubiquitous single-stranded DNA virus, has been proposed as a biomarker of the immune status in transplant patients. This study aimed to determine the correlation between a Home-Brew TTV PCR and R-GENE®PCR; the TTV viral load kinetics in renal transplant recipients and the association with graft rejection. MATERIALS AND METHODS Prospective cohort study on 107 adult renal transplant recipients. TTV viral load was determined in 746 plasma samples collected before and after renal transplantation by a Home-Brew PCR and a commercial PCR (R-GENE®PCR). Associations of TTV viral load with graft rejections were analyzed. RESULTS Agreement of both PCR assays was 93.2% and Pearson correlation coefficient was r: 0.902 (95%CI: 0.8881-0.9149, p < 0.0001). TTV viral load kinetics showed an initial gradual increase reaching a peak at 3 months. This highest value was followed by a slight decrease, reaching a plateau significantly higher than the initial baseline at 6 months (p < 0.0001). Between (181-270) days post-transplantation, TTV median viral load in patients with graft rejection was significantly lower, 3.59 Log10 copies/mL (by Home-Brew PCR) and 3.10 Log10 copies/mL (by R-GENE®PCR) compared to patients without graft rejection (6.14 and 5.96 Log10 copies/mL, respectively). CONCLUSIONS Significantly lower TTV viral load was observed in patients with renal rejection occurring at a median of 243 days post-transplantation. Given the dynamic behavior of TTV viral load post-transplantation, cut-off values for risk stratification to predict rejection might be determined in relation to the post-transplant period.
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Affiliation(s)
- N S Reyes
- Virology Unit (CEMIC-CONICET), Centro de Educación Médica e Investigaciones Clínicas University Hospital (CEMIC), Argentina.
| | - G Laham
- Nephrology section, CEMIC University Hospital, Argentina
| | - N Boccia
- Nephrology section, CEMIC University Hospital, Argentina
| | - G García
- Nephrology section, CEMIC University Hospital, Argentina
| | - R Jara
- Virology Unit (CEMIC-CONICET), Centro de Educación Médica e Investigaciones Clínicas University Hospital (CEMIC), Argentina
| | - E Hermida
- Virology Unit (CEMIC-CONICET), Centro de Educación Médica e Investigaciones Clínicas University Hospital (CEMIC), Argentina
| | - C Ricarte
- Virology Unit (CEMIC-CONICET), Centro de Educación Médica e Investigaciones Clínicas University Hospital (CEMIC), Argentina
| | - C Diaz
- Nephrology section, CEMIC University Hospital, Argentina
| | - G Soler Pujol
- Nephrology section, CEMIC University Hospital, Argentina
| | - F A Poletta
- Genetic Epidemiology Laboratory (CEMIC-CONICET), Argentina
| | - M Echavarria
- Virology Unit (CEMIC-CONICET), Centro de Educación Médica e Investigaciones Clínicas University Hospital (CEMIC), Argentina; Virology Laboratory, CEMIC, Argentina
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20
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Fontova P, van Merendonk LN, Vidal-Alabró A, Rigo-Bonnin R, Cerezo G, van Oevelen S, Bestard O, Melilli E, Montero N, Coloma A, Manonelles A, Torras J, Cruzado JM, Grinyó JM, Colom H, Lloberas N. The Effect of Intracellular Tacrolimus Exposure on Calcineurin Inhibition in Immediate- and Extended-Release Tacrolimus Formulations. Pharmaceutics 2023; 15:pharmaceutics15051481. [PMID: 37242723 DOI: 10.3390/pharmaceutics15051481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/04/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Despite intensive monitoring of whole blood tacrolimus concentrations, acute rejection after kidney transplantation occurs during tacrolimus therapy. Intracellular tacrolimus concentrations could better reflect exposure at the site of action and its pharmacodynamics (PD). Intracellular pharmacokinetic (PK) profile following different tacrolimus formulations (immediate-release (TAC-IR) and extended-release (TAC-LCP)) remains unclear. Therefore, the aim was to study intracellular tacrolimus PK of TAC-IR and TAC-LCP and its correlation with whole blood (WhB) PK and PD. A post-hoc analysis of a prospective, open-label, crossover investigator-driven clinical trial (NCT02961608) was performed. Intracellular and WhB tacrolimus 24 h time-concentration curves were measured in 23 stable kidney transplant recipients. PD analysis was evaluated measuring calcineurin activity (CNA) and simultaneous intracellular PK/PD modelling analysis was conducted. Higher dose-adjusted pre-dose intracellular concentrations (C0 and C24) and total exposure (AUC0-24) values were found for TAC-LCP than TAC-IR. Lower intracellular peak concentration (Cmax) was found after TAC-LCP. Correlations between C0, C24 and AUC0-24 were observed within both formulations. Intracellular kinetics seems to be limited by WhB disposition, in turn, limited by tacrolimus release/absorption processes from both formulations. The faster intracellular elimination after TAC-IR was translated into a more rapid recovery of CNA. An Emax model relating % inhibition and intracellular concentrations, including both formulations, showed an IC50, a concentration to achieve 50% CNA inhibition, of 43.9 pg/million cells.
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Affiliation(s)
- Pere Fontova
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | - Lisanne N van Merendonk
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | - Anna Vidal-Alabró
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | - Raül Rigo-Bonnin
- Biochemistry Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
| | - Gema Cerezo
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | | | - Oriol Bestard
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | - Edoardo Melilli
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
| | - Nuria Montero
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
| | - Ana Coloma
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
| | - Anna Manonelles
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
| | - Joan Torras
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | - Josep M Cruzado
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | - Josep M Grinyó
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
| | - Helena Colom
- Biopharmaceutics and Pharmacokinetics Unit, Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, School of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
| | - Nuria Lloberas
- Nephrology Department, IDIBELL, Hospital Universitari de Bellvitge, 08907 Barcelona, Spain
- Nephrology Laboratory, Department of Clinical Sciences, Campus Bellvitge, University of Barcelona, 08907 Barcelona, Spain
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21
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Gong F, Hu H, Ouyang Y, Liao ZZ, Kong Y, Hu JF, He H, Zhou Y. Physiologically-based pharmacokinetic modeling-guided rational combination of tacrolimus and voriconazole in patients with different CYP3A5 and CYP2C19 alleles. Toxicol Appl Pharmacol 2023; 466:116475. [PMID: 36931438 DOI: 10.1016/j.taap.2023.116475] [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: 12/07/2022] [Revised: 03/11/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
The drug-drug interactions (DDIs) between tacrolimus and voriconazole are highly variable among individuals. We aimed to develop a physiologically based pharmacokinetic (PBPK) model to predict the DDIs in people with different CYP3A5 and CYP2C19 alleles. First, pharmacokinetic data of humans receiving tacrolimus with or without voriconazole from the literature were used to construct and validate the PBPK model. Thereafter, we developed a model incorporating the metabolism of voriconazole mediated by CYP2C19 and the inhibitory effect of voriconazole on CYP3A4/5. Finally, the model was used to evaluate the dose adjustment of tacrolimus in people with different CYP3A5 and CYP2C19 alleles. When tacrolimus was administered alone (3 mg PO, single dose), the predicted AUC0-∞ of tacrolimus in CYP3A5 nonexpressers (19.22) was 3.5-fold higher than that in expressers (5.48). Following voriconazole (200 mg PO, bid) administration in human with different CYP2C19 genotypes, the AUC0-∞ of tacrolimus increased by 5.1- to 8.3-fold in CYP3A5 expressers and by 5.3- to 10.2-fold in CYP3A5 nonexpressers. The lower the gene expression level of CYP2C19 in the population, the higher the exposure to tacrolimus. When tacrolimus was combined with voriconazole (200 mg, bid; 400 mg, bid, on Day 1), the final model simulations suggested that the dose regimen of tacrolimus should be regulated to 0.15 mg/kg/day (qd) in CYP3A5 expressers with different CYP2C19 genotypes. For CYP3A5 nonexpressers, the dosing schedule of tacrolimus should be modified to 0.05 mg/kg/24 h for patients with 2C19 EM, 0.05 mg/kg/48 h for 2C19 IM and 0.05 mg/kg/72 h for 2C19 PM. In conclusion, a PBPK model with CYP3A5 and CYP2C19 polymorphisms was successfully established, providing more insights regarding the DDIs between tacrolimus and voriconazole to guide the clinical use of tacrolimus.
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Affiliation(s)
- Fei Gong
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; Center for Molecular Diagnosis and Precision Medicine, Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; School of Pharmacy, Nanchang University, Nanchang 330006, China
| | - Huihui Hu
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009, China
| | - Ying Ouyang
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; School of Pharmacy, Nanchang University, Nanchang 330006, China
| | - Zheng-Zheng Liao
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Ying Kong
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Jin-Fang Hu
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Hua He
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009, China.
| | - Ying Zhou
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China.
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22
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Pascual J, Crespo M, Portoles J, Jimenez C, Ortega-Carrion A, Diez T, Portero I. The IMBG Test for Evaluating the Pharmacodynamic Response to Immunosuppressive Therapy in Kidney Transplant Patients: Current Evidence and Future Applications. Int J Mol Sci 2023; 24:ijms24065201. [PMID: 36982276 PMCID: PMC10049381 DOI: 10.3390/ijms24065201] [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: 02/09/2023] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Immunosuppressive drugs are widely used to prevent rejection after kidney transplantation. However, the pharmacological response to a given immunosuppressant can vary markedly between individuals, with some showing poor treatment responses and/or experiencing serious side effects. There is an unmet need for diagnostic tools that allow clinicians to individually tailor immunosuppressive therapy to a patient’s immunological profile. The Immunobiogram (IMBG) is a novel blood-based in vitro diagnostic test that provides a pharmacodynamic readout of the immune response of individual patients to a range of immunosuppressants commonly used in kidney transplant recipients. Here, we discuss the current approaches used to measure the pharmacodynamic responses of individual patients to specific immunosuppressive drugs in vitro, which can then be correlated with patient’s clinical outcomes. We also describe the procedure of the IMBG assay, and summarize the results obtained using the IMBG in different kidney transplant populations. Finally, we outline future directions and other novel applications of the IMBG, both in kidney transplant patients and other autoimmune diseases.
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Affiliation(s)
- Julio Pascual
- Nephrology Department, Hospital 12 de Octubre, 28041 Madrid, Spain
- Nephrology Department, Hospital del Mar, Institut Mar for Medical Research, 08003 Barcelona, Spain
- Correspondence:
| | - Marta Crespo
- Nephrology Department, Hospital del Mar, Institut Mar for Medical Research, 08003 Barcelona, Spain
| | - Jose Portoles
- Nephrology Department, Hospital Puerta de Hierro Mahadahonda, Institute IDHIPHIM for Medical Research, 28222 Madrid, Spain
| | - Carlos Jimenez
- Nephrology Department, Hospital La Paz, 28046 Madrid, Spain
| | | | - Teresa Diez
- Biohope Scientific Solutions for Human Health, 28760 Madrid, Spain
| | - Isabel Portero
- Biohope Scientific Solutions for Human Health, 28760 Madrid, Spain
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23
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P-glycoprotein, FK-binding Protein-12, and the Intracellular Tacrolimus Concentration in T-lymphocytes and Monocytes of Kidney Transplant Recipients. Transplantation 2023; 107:382-391. [PMID: 36070572 DOI: 10.1097/tp.0000000000004287] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND . Transplant recipients may develop rejection despite having adequate tacrolimus whole blood predose concentrations (C 0 ). The intra-immune cellular concentration is potentially a better target than C 0 . However, little is known regarding intracellular tacrolimus concentration in T-lymphocytes and monocytes. We investigated the tacrolimus concentrations in both cell types and their relation with the expression and activity of FK-binding protein (FKBP)-12 and P-glycoprotein (P-gp). METHODS . T-lymphocytes and monocytes were isolated from kidney transplant recipients followed by intracellular tacrolimus concentration measurement. FKBP-12 and P-gp were quantified with Western blot, flow cytometry, and the Rhodamine-123 assay. Interleukin-2 and interferon-γ in T-lymphocytes were measured to quantify the effect of tacrolimus. RESULTS . Tacrolimus concentration in T-lymphocytes was lower than in monocytes (15.3 [8.5-33.4] versus 131.0 [73.5-225.1] pg/million cells; P < 0.001). The activity of P-gp (measured by Rhodamine-123 assay) was higher in T-lymphocytes than in monocytes. Flow cytometry demonstrated a higher expression of P-gp (normalized mean fluorescence intensity 1.5 [1.2-1.7] versus 1.2 [1.1-1.4]; P = 0.012) and a lower expression of FKBP-12 (normalized mean fluorescence intensity 1.3 [1.2-1.7] versus 1.5 [1.4-2.0]; P = 0.011) in T-lymphocytes than monocytes. Western blot confirmed these observations. The addition of verapamil, a P-gp inhibitor, resulted in a 2-fold higher intra-T-cell tacrolimus concentration. This was accompanied by a significantly fewer cytokine-producing cells. CONCLUSIONS . T-lymphocytes have a higher activity of P-gp and lower concentration of the FKBP-12 compared with monocytes. This explains the relatively lower tacrolimus concentration in T-lymphocytes. The addition of verapamil prevents loss of intracellular tacrolimus during the cell isolation process and is required to ensure adequate intracellular concentration measurement.
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Integrated Immunologic Monitoring in Solid Organ Transplantation: The Road Toward Torque Teno Virus-guided Immunosuppression. Transplantation 2022; 106:1940-1951. [PMID: 35509090 PMCID: PMC9521587 DOI: 10.1097/tp.0000000000004153] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Potent immunosuppressive drugs have been introduced into clinical care for solid organ transplant recipients. It is now time to guide these drugs on an individual level to optimize their efficacy. An ideal tool simultaneously detects overimmunosuppression and underimmunosuppression, is highly standardized, and is straightforward to implement into routine. Randomized controlled interventional trials are crucial to demonstrate clinical value. To date, proposed assays have mainly focused on the prediction of rejection and were based on the assessment of few immune compartments. Recently, novel tools have been introduced based on a more integrated approach to characterize the immune function and cover a broader spectrum of the immune system. In this respect, the quantification of the plasma load of a highly prevalent and apathogenic virus that might reflect the immune function of its host has been proposed: the torque teno virus (TTV). Although TTV control is driven by T cells, other major immune compartments might contribute to the hosts' response. A standardized in-house polymerase chain reaction and a conformité européenne-certified commercially available polymerase chain reaction are available for TTV quantification. TTV load is associated with rejection and infection in solid organ transplant recipients, and cutoff values for risk stratification of such events have been proposed for lung and kidney transplantation. Test performance of TTV load does not allow for the diagnosis of rejection and infection but is able to define at-risk patients. Hitherto TTV load has not been used in interventional settings, but two interventional randomized controlled trials are currently testing the safety and efficacy of TTV-guided immunosuppression.
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Tran PL, Kim JH, Jung YH, Lee DC, Choi JU, Le DN, Nam JW, Shrestha M, Kim JY, Pham TT, Jeong J. Prolongation of graft survival via layer-by-layer assembly of collagen and immunosuppressive particles on pancreatic islets. Biomaterials 2022; 290:121804. [DOI: 10.1016/j.biomaterials.2022.121804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/18/2022] [Accepted: 09/11/2022] [Indexed: 11/16/2022]
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The effect of the very low dosage diltiazem on tacrolimus exposure very early after kidney transplantation: a randomized controlled trial. Sci Rep 2022; 12:14247. [PMID: 35989346 PMCID: PMC9393165 DOI: 10.1038/s41598-022-18552-7] [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: 04/09/2022] [Accepted: 08/16/2022] [Indexed: 11/08/2022] Open
Abstract
AbstractThe objective of this study was to assess the effect of the very low dosage of diltiazem on tacrolimus exposure during the first week post-kidney transplantation, among cytochrome P450 (CYP) 3A5 expressers who did not receive diltiazem (EXplb), CYP3A5 expressers who received the very low dose diltiazem (EXdtz), CYP3A5 nonexpressers who did not receive diltiazem (NEplb), and CYP3A5 nonexpressers who received the very low dose diltiazem (NEdtz). Forty kidney recipients who receive tacrolimus-based immunosuppressive regimen were randomly assigned, with stratification on the CYP3A5 genotypes, to receive either diltiazem 30 mg every 12 h or a matched placebo. The observed median dose-adjusted area under the 12-h curve of tacrolimus concentration (AUC/D) at day 7 post-transplantation was lowest in the EXplb group followed by EXdtz, NEplb, and NEdtz at 34.9, 43.6, 49.4, and 71.1 ng*h/mL per mg, respectively. A Kruskal–Wallis test showed a significant difference in the mean ranks of AUC/D among groups. Significant differences between EXplb and NEplb, and between EXplb and NEdtz were demonstrated, whereas no sufficient evidence of significant differences was detected between the other pairs. In conclusion, coadministration of diltiazem 30 mg twice daily may be advantageous for increasing tacrolimus exposure early after kidney transplantation among CYP3A5 expressers.
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He X, Yang X, Yan X, Huang M, Xiang Z, Lou Y. Individualized Dosage of Tacrolimus for Renal Transplantation Patients Based on Pharmacometabonomics. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113517. [PMID: 35684454 PMCID: PMC9182099 DOI: 10.3390/molecules27113517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/19/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022]
Abstract
The clinical pharmacodynamics of tacrolimus in renal transplant patients has significant interindividual variability. T lymphocytes were selected to study the pharmacodynamic response of tacrolimus, which was significantly correlated with renal function and the outcome of renal transplant patients. Ultra-performance liquid chromatography-quadrupole time-of-flight mass spectroscopy (UPLC/Q-TOF-MS) was performed to obtain the metabolic profiles of 109 renal transplant patients. A partial least squares (PLS) model was constructed to screen potential biomarkers that could predict the efficacy of tacrolimus. Multinomial logistic regression analysis established a bridge that could quantify the relationship between the efficacy of tacrolimus and biomarkers. The results showed a good correlation between endogenous molecules and the efficacy of tacrolimus. Metabolites such as serum creatinine, mesobilirubinogen, L-isoleucine, 5-methoxyindoleacetate, eicosapentaenoic acid, N2-succinoylarginine, tryptophyl-arginine, and butyric acid were indicated as candidate biomarkers. In addition, the key biomarkers could correctly predict the efficacy of tacrolimus with an accuracy of 82.5%. Finally, we explored the mechanism of individual variation by pathway analysis, which showed that amino acid metabolism was significantly related to the efficacy of tacrolimus. Moreover, orthogonal partial least squares discriminant analysis (OPLS-DA) showed that there was no difference in key metabolites among different pharmacodynamic groups at 1 month and 3 months after dose adjustment, suggesting that pharmacometabonomics is a useful tool to predict individual differences in pharmacodynamics and thus to facilitate individualized drug therapy.
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Affiliation(s)
- Xiaoying He
- Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, Department of Clinical Pharmacy, The First Affiliated Hospital, College of Medicine, Zhejiang University, 79 QingChun Road, Hangzhou 310000, China; (X.H.); (X.Y.); (X.Y.)
| | - Xi Yang
- Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, Department of Clinical Pharmacy, The First Affiliated Hospital, College of Medicine, Zhejiang University, 79 QingChun Road, Hangzhou 310000, China; (X.H.); (X.Y.); (X.Y.)
| | - Xiaoting Yan
- Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, Department of Clinical Pharmacy, The First Affiliated Hospital, College of Medicine, Zhejiang University, 79 QingChun Road, Hangzhou 310000, China; (X.H.); (X.Y.); (X.Y.)
| | - Mingzhu Huang
- Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, Department of Clinical Pharmacy, The First Affiliated Hospital, College of Medicine, Zhejiang University, 79 QingChun Road, Hangzhou 310000, China; (X.H.); (X.Y.); (X.Y.)
- Correspondence: (M.H.); (Z.X.); (Y.L.); Tel.: +86-571-8723-6871 (Y.L.)
| | - Zheng Xiang
- School of Pharmaceutical Sciences, Zhejiang University City College, Hangzhou 310000, China
- Correspondence: (M.H.); (Z.X.); (Y.L.); Tel.: +86-571-8723-6871 (Y.L.)
| | - Yan Lou
- Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, Department of Clinical Pharmacy, The First Affiliated Hospital, College of Medicine, Zhejiang University, 79 QingChun Road, Hangzhou 310000, China; (X.H.); (X.Y.); (X.Y.)
- Correspondence: (M.H.); (Z.X.); (Y.L.); Tel.: +86-571-8723-6871 (Y.L.)
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Wang XH, Shao K, An HM, Zhai XH, Zhou PJ, Chen B. The pharmacokinetics of tacrolimus in peripheral blood mononuclear cells and limited sampling strategy for estimation of exposure in renal transplant recipients. Eur J Clin Pharmacol 2022; 78:1261-1272. [PMID: 35536394 DOI: 10.1007/s00228-021-03215-9] [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: 01/29/2021] [Accepted: 09/05/2021] [Indexed: 11/03/2022]
Abstract
PURPOSE Intracellular exposure of tacrolimus (TAC) may be a better marker of therapeutic effect than whole blood exposure. We aimed to evaluate the influence of genetic polymorphism on the pharmacokinetics of TAC in peripheral blood mononuclear cells (PBMCs) and develop limited sampling strategy (LSS) models to estimate the area under the curve (AUC0-12h) in the PBMC of Chinese renal transplant patients. METHODS Ten blood samples of each of the 23 renal transplant patients were collected 0-12h after 14 (10-18) days of TAC administration. PBMCs were separated and quantified. The TAC level in PBMCs was determined, and pharmacokinetic parameters were estimated by noncompartmental study. The AUC0-12h of TAC in whole blood was estimated by Bayesian approach based on a population pharmacokinetic model established in 65 renal transplant patients. The influence of CYP3A5 and ABCB1 genotypes on exposure was estimated. By applying multiple stepwise linear regression analysis, LSS equations for TAC AUC0-12h in the PMBC of renal transplant patients were established, and the bias and precision of various equations were identified and compared. RESULTS We found a modest correlation between TAC exposure in whole blood and PBMC (r2 = 0.5260). Patients with the CYP3A5 6986GG genotype had a higher AUC0-12h in PBMCs than those with the 6986 AA or GA genotype (P = 0.026). Conversely, patients with the ABCB1 3435TT genotype had a higher AUC0-12h in PBMC than those with the 3435 CC and CT genotypes (P = 0.046). LSS models with 1-4 blood time points were established (r2 = 0.570-0.989). The best model for predicting TAC AUC0-12h was C2-C4-C6-C10 (r2 = 0.989). The model with C0.5-C6 (r2 = 0.849) can be used for outpatients who need monitoring to be performed in a short period. CONCLUSIONS The CYP3A5 and ABCB1 genotypes impact TAC exposure in PBMCs, which may further alter the effects of TAC. The LSS model consisting of 2-4 time points is an effective approach for estimating full TAC AUC0-12h in Chinese renal transplant patients. This approach may provide convenience and the possibility for clinical monitoring of TAC intracellular exposure.
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Affiliation(s)
- Xi-Han Wang
- Department of Pharmacy, Rui-Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Kun Shao
- Center for Organ Transplantation, Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, People's Republic of China
| | - Hui-Min An
- Center for Organ Transplantation, Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, People's Republic of China
| | - Xiao-Hui Zhai
- Department of Pharmacy, Rui-Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Pei-Jun Zhou
- Center for Organ Transplantation, Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, People's Republic of China.
| | - Bing Chen
- Department of Pharmacy, Rui-Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.
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Zhang M, Tajima S, Shigematsu T, Noguchi H, Kaku K, Tsuchimoto A, Okabe Y, Egashira N, Ieiri I. Development and Validation of A Liquid Chromatography-Tandem Mass Spectrometry Method to Simultaneously Measure Tacrolimus and Everolimus Concentrations in Kidney Allograft Biopsies After Kidney Transplantation. Ther Drug Monit 2022; 44:275-281. [PMID: 34224536 DOI: 10.1097/ftd.0000000000000912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/08/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Therapeutic drug monitoring is necessary for immunosuppressive therapy with tacrolimus and everolimus after kidney transplantation. Several studies have suggested that the concentrations of immunosuppressive agents in allografts may better reflect clinical outcomes than whole blood concentrations. This study aimed to develop a method for the simultaneous quantification of tacrolimus and everolimus concentrations in clinical biopsy samples and investigate their correlation with histopathological findings in kidney transplant recipients. METHODS Fourteen biopsy samples were obtained from kidney transplant recipients at 3 months after transplantation. Kidney allograft concentrations (Ctissue) of tacrolimus and everolimus were measured by liquid chromatography-tandem mass spectrometry, and the corresponding whole blood trough concentrations (C0) were obtained from clinical records. RESULTS The developed method was validated over a concentration range of 0.02-2.0 ng/mL for tacrolimus and 0.04-4.0 ng/mL for everolimus in kidney tissue homogenate. The Ctissue of tacrolimus and everolimus in kidney biopsies ranged from 21.0 to 86.7 pg/mg tissue and 33.5-105.0 pg/mg tissue, respectively. Dose-adjusted Ctissue of tacrolimus and everolimus was significantly correlated with the dose-adjusted C0 (P < 0.0001 and P = 0.0479, respectively). No significant association was observed between the Ctissue of tacrolimus and everolimus and the histopathologic outcomes at 3 months after transplantation. CONCLUSIONS This method could support further investigation of the clinical relevance of tacrolimus and everolimus allograft concentrations after kidney transplantation.
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Affiliation(s)
- Mengyu Zhang
- Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Soichiro Tajima
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan ; and
| | - Tomohiro Shigematsu
- Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan ; and
| | | | | | - Akihiro Tsuchimoto
- Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | - Nobuaki Egashira
- Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan ; and
| | - Ichiro Ieiri
- Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan ; and
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Immunosuppressive Drugs. ENCYCLOPEDIA OF INFECTION AND IMMUNITY 2022. [PMCID: PMC8987166 DOI: 10.1016/b978-0-12-818731-9.00068-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Immunosuppressant is a class of medicines that inhibit or decrease the intensity of the immune response in the body. Most of these medications are used to allow the body less likely to resist a transplanted organ. In solid organ transplantation, immunosuppressive agents are needed for the activation of early-stage immunosuppression, the management of late-stage immunosuppression or for the maintenance of organ rejection. The emergence of novel agents and improvements in immunosuppression regimens after transplantation are significant factors leading to this progress. However, these drugs also increase the risk of infection, cancers and specific adverse side effects specific to each agent in patients particularly in pregnant women and fertility issues. Corona virus disease being hot topic of debate is has given positive outcome to immunosuppressive drugs however need more attention in future. Transplant centers across the world utilize multiple immunosuppression protocols; nevertheless, each patient can require an individually formulated immunosuppression regimen to manage the advantages and possible damage of treatment thus eliminating the likelihood of their primary disease recurrence.
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31
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Radhakrishnan A, Kuppusamy G, Ponnusankar S, Mutalik S. Towards next-generation personalization of tacrolimus treatment: a review on advanced diagnostic and therapeutic approaches. Pharmacogenomics 2021; 22:1151-1175. [PMID: 34719935 DOI: 10.2217/pgs-2021-0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The benefit of personalized medicine is that it allows the customization of drug therapy - maximizing efficacy while avoiding side effects. Genetic polymorphisms are one of the major contributors to interindividual variability. Currently, the only gold standard for applying personalized medicine is dose titration. Because of technological advancements, converting genotypic data into an optimum dose has become easier than in earlier years. However, for many medications, determining a personalized dose may be difficult, leading to a trial-and-error method. On the other hand, the technologically oriented pharmaceutical industry has a plethora of smart drug delivery methods that are underutilized in customized medicine. This article elaborates the genetic polymorphisms of tacrolimus as case study, and extensively covers the diagnostic and therapeutic technologies which aid in the delivery of personalized tacrolimus treatment for better clinical outcomes, thereby providing a new strategy for implementing personalized medicine.
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Affiliation(s)
- Arun Radhakrishnan
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamilnadu, India
| | - Gowthamarajan Kuppusamy
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamilnadu, India
| | - Sivasankaran Ponnusankar
- Department of Pharmacy Practice, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamilnadu, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Karnataka, India
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Zheng P, Yu Z, Li L, Liu S, Lou Y, Hao X, Yu P, Lei M, Qi Q, Wang Z, Gao F, Zhang Y, Li Y. Predicting Blood Concentration of Tacrolimus in Patients With Autoimmune Diseases Using Machine Learning Techniques Based on Real-World Evidence. Front Pharmacol 2021; 12:727245. [PMID: 34630104 PMCID: PMC8497784 DOI: 10.3389/fphar.2021.727245] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/09/2021] [Indexed: 11/17/2022] Open
Abstract
Tacrolimus is a widely used immunosuppressive drug in patients with autoimmune diseases. It has a narrow therapeutic window, thus requiring therapeutic drug monitoring (TDM) to guide the clinical regimen. This study included 193 cases of tacrolimus TDM data in patients with autoimmune diseases at Southern Medical University Nanfang Hospital from June 7, 2018, to December 31, 2020. The study identified nine important variables for tacrolimus concentration using sequential forward selection, including height, tacrolimus daily dose, other immunosuppressants, low-density lipoprotein cholesterol, mean corpuscular volume, mean corpuscular hemoglobin, white blood cell count, direct bilirubin, and hematocrit. The prediction abilities of 14 models based on regression analysis or machine learning algorithms were compared. Ultimately, a prediction model of tacrolimus concentration was established through eXtreme Gradient Boosting (XGBoost) algorithm with the best predictive ability (R2 = 0.54, mean absolute error = 0.25, and root mean square error = 0.33). Then, SHapley Additive exPlanations was used to visually interpret the variable’s impacts on tacrolimus concentration. In conclusion, the XGBoost model for predicting blood concentration of tacrolimus on the basis of real-world evidence has good predictive performance, providing guidance for the adjustment of regimen in clinical practice.
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Affiliation(s)
- Ping Zheng
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ze Yu
- Beijing Medicinovo Technology Co. Ltd., Beijing, China
| | - Liren Li
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shiting Liu
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan Lou
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xin Hao
- Dalian Medicinovo Technology Co. Ltd., Dalian, China
| | - Peng Yu
- Beijing Medicinovo Technology Co. Ltd., Beijing, China
| | - Ming Lei
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qiaona Qi
- Beijing Medicinovo Technology Co. Ltd., Beijing, China
| | - Zeyuan Wang
- Beijing Medicinovo Technology Co. Ltd., Beijing, China
| | - Fei Gao
- Beijing Medicinovo Technology Co. Ltd., Beijing, China
| | - Yuqing Zhang
- Zhongshan School of Medicine, SYSU, Guangzhou, China
| | - Yilei Li
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Yoon JG, Song SH, Choi S, Oh J, Jang IJ, Kim YJ, Moon S, Kim BJ, Cho Y, Kim HK, Min S, Ha J, Shin HS, Yang CW, Yoon HE, Yang J, Lee MG, Park JB, Kim MS. Unraveling the Genomic Architecture of the CYP3A Locus and ADME Genes for Personalized Tacrolimus Dosing. Transplantation 2021; 105:2213-2225. [PMID: 33654003 DOI: 10.1097/tp.0000000000003660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Tacrolimus (TAC) is an immunosuppressant widely prescribed following an allogenic organ transplant. Due to wide interindividual pharmacokinetic (PK) variability, optimizing TAC dosing based on genetic factors is required to minimize nephrotoxicity and acute rejections. METHODS We enrolled 1133 participants receiving TAC from 4 cohorts, consisting of 3 with kidney transplant recipients and 1 with healthy males from clinical trials. The effects of clinical factors were estimated to appropriately control confounding variables. A genome-wide association study, haplotype analysis, and a gene-based association test were conducted using the Korea Biobank Array or targeted sequencing for 114 pharmacogenes. RESULTS Genome-wide association study verified that CYP3A5*3 is the only common variant associated with TAC PK variability in Koreans. We detected several CYP3A5 and CYP3A4 rare variants that could potentially affect TAC metabolism. The haplotype structure of CYP3A5 stratified by CYP3A5*3 was a significant factor for CYP3A5 rare variant interpretation. CYP3A4 rare variant carriers among CYP3A5 intermediate metabolizers displayed higher TAC trough levels. Gene-based association tests in the 61 absorption, distribution, metabolism, and excretion genes revealed that CYP1A1 are associated with additional TAC PK variability: CYP1A1 rare variant carriers among CYP3A5 poor metabolizers showed lower TAC trough levels than the noncarrier controls. CONCLUSIONS Our study demonstrates that rare variant profiling of CYP3A5 and CYP3A4, combined with the haplotype structures of CYP3A locus, provide additive value for personalized TAC dosing. We also identified a novel association between CYP1A1 rare variants and TAC PK variability in the CYP3A5 nonexpressers that needs to be further investigated.
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Affiliation(s)
- Jihoon G Yoon
- Department of Pharmacology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Sciences, Severance Biomedical Science Institute, Seoul, Republic of Korea
| | - Seung Hwan Song
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Surgery, Ewha Womans University Seoul Hospital, Seoul, Republic of Korea
| | - Sungkyoung Choi
- Department of Applied Mathematics, Hanyang University (ERICA), Ansan, Republic of Korea
| | - Jaeseong Oh
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, Republic of Korea
| | - In-Jin Jang
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, Republic of Korea
| | - Young Jin Kim
- Division of Genome Research, Department of Precision Medicine, National Institute of Health, Chungcheongbuk-do, Republic of Korea
| | - Sanghoon Moon
- Division of Genome Research, Department of Precision Medicine, National Institute of Health, Chungcheongbuk-do, Republic of Korea
| | - Bong-Jo Kim
- Division of Genome Research, Department of Precision Medicine, National Institute of Health, Chungcheongbuk-do, Republic of Korea
| | - Yuri Cho
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyo Kee Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sangil Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jongwon Ha
- Department of Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
- Transplantation Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ho Sik Shin
- Division of Nephrology, Department of Internal Medicine, Gospel Hospital, Kosin University College of Medicine, Busan, Republic of Korea
| | - Chul Woo Yang
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - Hye Eun Yoon
- Divison of Nephrology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Jaeseok Yang
- Department of Surgery, Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea
| | - Min Goo Lee
- Department of Pharmacology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Sciences, Severance Biomedical Science Institute, Seoul, Republic of Korea
| | - Jae Berm Park
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Myoung Soo Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
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van Zyl JS, Sam T, Clark DM, Felius J, Doss AK, Kerlee KR, Cheung ZO, Martits-Chalangari K, Jamil AK, Carey SA, Gottlieb RL, Guerrero-Miranda CY, Kale P, Hall SA. De novo tacrolimus extended-release tablets (LCPT) versus twice-daily tacrolimus in adult heart transplantation: Results of a single-center non-inferiority matched control trial. Clin Transplant 2021; 35:e14487. [PMID: 34529289 PMCID: PMC9285033 DOI: 10.1111/ctr.14487] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/27/2021] [Accepted: 09/08/2021] [Indexed: 11/30/2022]
Abstract
Extended-release tacrolimus for prophylaxis of allograft rejection in orthotopic heart transplant (OHT) recipients is currently not FDA-approved. One such extended-release formulation of tacrolimus known as LCPT allows once-daily dosing and improves bioavailability compared to immediate-release tacrolimus (IR-tacrolimus). We compared the efficacy and safety of LCPT to IR-tacrolimus applied de novo in adult OHT recipients. Twenty-five prospective recipients on LCPT at our center from 2017 to 2019 were matched 1:2 with historical control recipients treated with IR-tacrolimus based on age, gender, and baseline creatinine. The primary composite outcome of death, acute cellular rejection, and/or new graft dysfunction within 1 year was compared using non-inferiority analysis. LCPT demonstrated non-inferiority to IR-tacrolimus, with a primary outcome risk reduction of 20% (90% CI: -40%, -.5%; non-inferiority P = .001). Tacrolimus trough levels peaked at 2-3 months and were higher in LCPT (median 14.5 vs. 12.7 ng/ml; P = .03) with similar dose levels (LCPT vs. IR-tacrolimus: .08 vs. .09 mg/kg/day; P = .33). Cardiovascular-related readmissions were reduced by 62% (P = .046) in LCPT patients. The complication rate per transplant admission and all-cause readmission rate did not differ significantly. These results suggest that LCPT is non-inferior in efficacy to IR-tacrolimus with a similar safety profile and improved bioavailability in OHT.
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Affiliation(s)
- Johanna S van Zyl
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA.,Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA
| | - Teena Sam
- Department of Pharmacy, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas, USA
| | - Donna M Clark
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA
| | - Joost Felius
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA.,Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA
| | - Amanda K Doss
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA
| | - Kacie R Kerlee
- Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA
| | - Zi-On Cheung
- Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA
| | | | - Aayla K Jamil
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA.,Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA
| | - Sandra A Carey
- Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas, USA
| | - Robert L Gottlieb
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA.,Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA.,Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas, USA.,Division of Precision Medicine, Baylor University Medical Center, Dallas, Texas, USA
| | - Cesar Y Guerrero-Miranda
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA.,Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA.,Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas, USA
| | - Parag Kale
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA.,Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA.,Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas, USA
| | - Shelley A Hall
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas, USA.,Texas A&M University College of Medicine Health Science Center, Dallas, Texas, USA.,Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Baylor Scott & White Health, Dallas, Texas, USA
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Doberer K, Haupenthal F, Nackenhorst M, Bauernfeind F, Dermuth F, Eigenschink M, Schiemann M, Kläger J, Görzer I, Eskandary F, Reindl-Schwaighofer R, Kikić Ž, Böhmig G, Strassl R, Regele H, Puchhammer-Stöckl E, Bond G. Torque Teno Virus Load Is Associated With Subclinical Alloreactivity in Kidney Transplant Recipients: A Prospective Observational Trial. Transplantation 2021; 105:2112-2118. [PMID: 33587432 PMCID: PMC8376270 DOI: 10.1097/tp.0000000000003619] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Nonpathogenic torque teno viruses (TTVs) are highly prevalent in transplant recipients and associated with immunosuppression. Studies in kidney transplant patients have proposed assessment of TTV load for risk stratification of clinically overt graft rejection. The value of TTV quantification in the context of subclinical rejection has not been evaluated. METHODS In this prospective trial, 307 consecutive kidney transplant recipients were subjected to per-protocol monitoring of plasma TTV. TTV was analyzed in the context of protocol biopsies (n = 82), scheduled 1 year posttransplantation. RESULTS TTV load at the time of biopsy was lower in recipients with rejection (n = 19; according to Banff, including borderline changes suspicious for acute T cell-mediated rejection) than those without rejection (n = 63) whereby each log increase in TTV copies/mL decreased the risk for rejection by 9% (risk ratio 0.91, 95% confidence interval, 0.85-0.97; P = 0.004). Development of chronic lesions (cg, cv, ci, ct, ah, ptcml) was associated with the number of days with a TTV load <1 × 106 copies/mL between months 3 and 12 posttransplant (β 0.07, 95% confidence interval, 0.01-0.14; P = 0.02). CONCLUSIONS This trial demonstrates an association between TTV and subclinical graft rejection in kidney transplant recipients. A TTV load <1 × 106 copies/mL suggests suboptimal immunosuppression.
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Affiliation(s)
- Konstantin Doberer
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Frederik Haupenthal
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Maja Nackenhorst
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Florian Bauernfeind
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Florentina Dermuth
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Michael Eigenschink
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Martin Schiemann
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Johannes Kläger
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Irene Görzer
- Center for Virology, Medical University of Vienna, Vienna, Austria
| | - Farsad Eskandary
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Roman Reindl-Schwaighofer
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Željko Kikić
- Department of Urology, Medical University of Vienna, Vienna, Austria
| | - Georg Böhmig
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Robert Strassl
- Division of Clinical Virology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Heinz Regele
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | | | - Gregor Bond
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
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Usage of Tacrolimus and Mycophenolic Acid During Conception, Pregnancy, and Lactation, and Its Implications for Therapeutic Drug Monitoring: A Systematic Critical Review. Ther Drug Monit 2021; 42:518-531. [PMID: 32398419 DOI: 10.1097/ftd.0000000000000769] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Conception, pregnancy, and lactation following solid organ transplantation require appropriate management. The most frequently used immunosuppressive drug combination after solid organ transplantation consists of tacrolimus (Tac) plus mycophenolic acid (MPA). Here, the effects of Tac and MPA on fertility, pregnancy, and lactation are systematically reviewed, and their implications for therapeutic drug monitoring (TDM) are discussed. METHODS A systematic literature search was performed (August 19, 2019) using Ovid MEDLINE, EMBASE, the Cochrane Central Register of controlled trials, Google Scholar, and Web of Science, and 102 studies were included. Another 60 were included from the reference list of the published articles. RESULTS As MPA is teratogenic, women who are trying to conceive are strongly recommended to switch from MPA to azathioprine. MPA treatment in men during conception seems to have no adverse effect on pregnancy outcomes. Nevertheless, in 2015, the drug label was updated with additional risk minimization measures in a pregnancy prevention program. Data on MPA pharmacokinetics during pregnancy and lactation are limited. Tac treatment during conception, pregnancy, and lactation seems to be safe in terms of the health of the mother, (unborn) child, and allograft. However, Tac may increase the risk of hypertension, preeclampsia, preterm birth, and low birth weight. Infants will ingest very small amounts of Tac via breast milk from mothers treated with Tac. However, no adverse outcomes have been reported in children exposed to Tac during lactation. During pregnancy, changes in Tac pharmacokinetics result in increased unbound to whole-blood Tac concentration ratio. To maintain Tac concentrations within the target range, increased Tac dose and intensified TDM may be required. However, it is unclear if dose adjustments during pregnancy are necessary, considering the higher concentration of (active) unbound Tac. CONCLUSIONS Tac treatment during conception, pregnancy and lactation seems to be relatively safe. Due to pharmacokinetic changes during pregnancy, a higher Tac dose might be indicated to maintain target concentrations. However, more evidence is needed to make recommendations on both Tac dose adjustments and alternative matrices than whole-blood for TDM of Tac during pregnancy. MPA treatment in men during conception seems to have no adverse effect on pregnancy outcomes, whereas MPA use in women during conception and pregnancy is strongly discouraged.
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Seyfinejad B, Jouyban A. Overview of therapeutic drug monitoring of immunosuppressive drugs: Analytical and clinical practices. J Pharm Biomed Anal 2021; 205:114315. [PMID: 34399192 DOI: 10.1016/j.jpba.2021.114315] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/16/2021] [Accepted: 08/05/2021] [Indexed: 01/04/2023]
Abstract
Immunosuppressant drugs (ISDs) play a key role in short-term patient survival together with very low acute allograft rejection rates in transplant recipients. Due to the narrow therapeutic index and large inter-patient pharmacokinetic variability of ISDs, therapeutic drug monitoring (TDM) is needed to dose adjustment for each patient (personalized medicine approach) to avoid treatment failure or side effects of the therapy. To achieve this, TDM needs to be done effectively. However, it would not be possible without the proper clinical practice and analytical tools. The purpose of this review is to provide a guide to establish reliable TDM, followed by a critical overview of the current analytical methods and clinical practices for the TDM of ISDs, and to discuss some of the main practical aspects of the TDM.
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Affiliation(s)
- Behrouz Seyfinejad
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Faculty of Pharmacy, Near East University, PO BOX: 99138 Nicosia, North Cyprus, Mersin 10, Turkey.
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He Y, Ma Y, Fu Q, Liang J, Yu X, Huang H, Zhong L, Huang B. The CYP3A5 and ABCB1 Gene Polymorphisms in Kidney Transplant Patients and Establishment of Initial Daily Tacrolimus Dosing Formula. Ann Pharmacother 2021; 56:393-400. [PMID: 34362271 DOI: 10.1177/10600280211023495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Tacrolimus is an immunosuppressive drug used to prevent organ rejections. Many factors could influence blood concentration of tacrolimus. OBJECTIVE To detect genotypes of cytochrome P450 3A5 (CYP3A5) and ABCB1 in kidney transplant patients and establish initial daily tacrolimus dosing formula based on genotypes of CYP3A5 and ABCB1 and patients' clinical parameters. METHODS Sequence specific primer polymerase chain reaction (PCR) and PCR restriction fragment length polymorphism were used to detect genotypes of CYP3A5 and ABCB1. The blood cell, procalcitonin, C-reactive protein, height, weight, age, gender and other clinical parameters were recorded. Multiple linear regression analysis and Pearson correlation analysis were used to conduct date analysis. RESULTS 102 cases were enrolled in cohort 1, and there were 10 cases of CYP3A5 *1/*1 (9.8%), 28 cases of CYP3A5 *1/*3 (27.5%), and 64 cases of CYP3A5 *3/*3 (62.7%). The distributions of ABCB1 C3435T genotype were CC 36 (35.3%), CT 52 (51.0%), and TT 14 (13.7%). The distributions of ABCB1 G2677T/A genotype were GG 39 (38.2%), GT 40 (39.2%), and TT 23 (22.5%). The formula was 7.499 + (0.053 × Weight) - (0.029 × Hemoglobin concentration) - (1.045 × CYP3A5 genotype) (CYP3A5 genotype: *1/*1 type inputs 0, *1/*3 type inputs 1, *3/*3 type inputs 2). The predicted doses from the established formula had a significant correlation (r = 0.605) with actual clinical doses (P < 0.05). CONCLUSION AND RELEVANCE Hemoglobin concentration, weight, and CYP3A5 genotype should be considered using tacrolimus. The initial daily tacrolimus dosing formula established can make a good prediction.
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Affiliation(s)
- Yuting He
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University
| | - Yixiao Ma
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University
| | - Qian Fu
- Department of Organ Transplantation, The First Affiliated Hospital, Sun Yat-sen University
| | - Jianbo Liang
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University
| | - Xuegao Yu
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University
| | - Hao Huang
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University
| | - Liangying Zhong
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University
| | - Bin Huang
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University
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Taddeo A, Prim D, Bojescu ED, Segura JM, Pfeifer ME. Point-of-Care Therapeutic Drug Monitoring for Precision Dosing of Immunosuppressive Drugs. J Appl Lab Med 2021; 5:738-761. [PMID: 32533157 DOI: 10.1093/jalm/jfaa067] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/03/2020] [Indexed: 01/15/2023]
Abstract
BACKGROUND Immunosuppressive drugs (ISD) are an essential tool in the treatment of transplant rejection and immune-mediated diseases. Therapeutic drug monitoring (TDM) for determination of ISD concentrations in biological samples is an important instrument for dose personalization for improving efficacy while reducing side effects. While currently ISD concentration measurements are performed at specialized, centralized facilities, making the process complex and laborious for the patient, various innovative technical solutions have recently been proposed for bringing TDM to the point-of-care (POC). CONTENT In this review, we evaluate current ISD-TDM and its value, limitations, and proposed implementations. Then, we discuss the potential of POC-TDM in the era of personalized medicine, and provide an updated review on the unmet needs and available technological solutions for the development of POC-TDM devices for ISD monitoring. Finally, we provide concrete suggestions for the generation of a meaningful and more patient-centric process for ISD monitoring. SUMMARY POC-based ISD monitoring may improve clinical care by reducing turnaround time, by enabling more frequent measurements in order to obtain meaningful pharmacokinetic data (i.e., area under the curve) faster reaction in case of problems and by increasing patient convenience and compliance. The analysis of the ISD-TDM field prompts the evolution of POC testing toward the development of fully integrated platforms able to support clinical decision-making. We identify 4 major areas requiring careful combined implementation: patient usability, data meaningfulness, clinicians' acceptance, and cost-effectiveness.
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Affiliation(s)
- Adriano Taddeo
- Institute of Life Technologies - School of Engineering, HES-SO//University of Applied Sciences, Western Switzerland, Sion, Switzerland
| | - Denis Prim
- Institute of Life Technologies - School of Engineering, HES-SO//University of Applied Sciences, Western Switzerland, Sion, Switzerland
| | - Elena-Diana Bojescu
- Institute of Life Technologies - School of Engineering, HES-SO//University of Applied Sciences, Western Switzerland, Sion, Switzerland
| | - Jean-Manuel Segura
- Institute of Life Technologies - School of Engineering, HES-SO//University of Applied Sciences, Western Switzerland, Sion, Switzerland
| | - Marc E Pfeifer
- Institute of Life Technologies - School of Engineering, HES-SO//University of Applied Sciences, Western Switzerland, Sion, Switzerland
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Pablo AH, Breaud AR, Clarke W. Analysis of Immunosuppressant Drugs in Whole Blood by Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS). ACTA ACUST UNITED AC 2021; 84:e92. [PMID: 32436620 DOI: 10.1002/cptx.92] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Immunosuppressant medications help suppress the immune system response through inhibition of various checkpoints in the regulatory biochemical pathway. This is useful in prevention of organ rejection in transplantation or in the treatment of autoimmune diseases such as lupus or rheumatoid arthritis. Quantification of immunosuppressive drugs in blood is needed clinically for optimization of treatment and to avoid toxicity or unwanted side effects. Here, we describe a quantitative method to determine the concentration of cyclosprine A, tacrolimus, sirolimus, and everolimus in whole blood. This method has been used for many years clinically to support patient care. © 2020 by John Wiley & Sons, Inc.
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Affiliation(s)
- Abed H Pablo
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Autumn R Breaud
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - William Clarke
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Tanaka R, Suzuki Y, Watanabe H, Fujioka T, Hirata K, Shin T, Ando T, Ono H, Tatsuta R, Mimata H, Maruyama T, Itoh H. Association of CYP3A5 polymorphisms and parathyroid hormone with blood level of tacrolimus in patients with end-stage renal disease. Clin Transl Sci 2021; 14:2034-2042. [PMID: 34058078 PMCID: PMC8504850 DOI: 10.1111/cts.13065] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/24/2021] [Accepted: 04/02/2021] [Indexed: 12/02/2022] Open
Abstract
Because tacrolimus is predominantly metabolized by CYP3A, the blood concentration/dose (C/D) ratio is affected by CYP3A5 polymorphism. Parathyroid hormone (PTH) expression increases in secondary hyperparathyroidism, which is frequently associated with end‐stage renal disease. Recently, PTH has been shown to downregulate CYP3A expression at mRNA level. In this study, we examined the influence of CYP3A5 polymorphism on and association of serum intact‐PTH (iPTH) level with blood tacrolimus concentration in patients with end‐stage renal disease just before kidney transplantation. Forty‐eight patients who satisfied the selection criteria were analyzed. Subjects were classified into two phenotype subgroups: CYP3A5 expressor (CYP3A5*1/*1 and *1/*3; n = 15) and CYP3A5 nonexpressor (CYP3A5*3/*3; n = 33). The blood tacrolimus C/D (per body weight) ratio was significantly lower in CYP3A5 expressors than that in CYP3A5 nonexpressors. A significant positive correlation was found between tacrolimus C/D and iPTH concentrations (r = 0.305, p = 0.035), and the correlation coefficient was higher after excluding 20 patients co‐administered CYP3A inhibitor or inducer (r = 0.428, p = 0.023). A multiple logistic regression analysis by stepwise selection identified CYP3A5 polymorphism and serum iPTH level as significant factors associated with tacrolimus C/D. These results may suggest the importance of dose design considering not only the CYP3A5 phenotype but also serum iPTH level when using tacrolimus in patients who undergo renal transplantation.
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Affiliation(s)
- Ryota Tanaka
- Department of Clinical Pharmacy, Oita University Hospital, Oita, Japan
| | - Yosuke Suzuki
- Department of Medication Use Analysis and Clinical Research, Meiji Pharmaceutical University, Tokyo, Japan
| | - Hiroshi Watanabe
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takashi Fujioka
- Laboratory of Medical Pharmaceutics, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Kenshiro Hirata
- Department of Clinical Pharmaceutics, Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan
| | - Toshitaka Shin
- Department of Urology, Faculty of Medicine, Oita University, Oita, Japan
| | - Tadasuke Ando
- Department of Urology, Faculty of Medicine, Oita University, Oita, Japan
| | - Hiroyuki Ono
- Department of Clinical Pharmacy, Oita University Hospital, Oita, Japan
| | - Ryosuke Tatsuta
- Department of Clinical Pharmacy, Oita University Hospital, Oita, Japan
| | - Hiromitsu Mimata
- Department of Urology, Faculty of Medicine, Oita University, Oita, Japan
| | - Toru Maruyama
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroki Itoh
- Department of Clinical Pharmacy, Oita University Hospital, Oita, Japan
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Tacrolimus Area Under the Concentration Versus Time Curve Monitoring, Using Home-Based Volumetric Absorptive Capillary Microsampling. Ther Drug Monit 2021; 42:407-414. [PMID: 31479042 DOI: 10.1097/ftd.0000000000000697] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Therapeutic drug monitoring (TDM) of tacrolimus (Tac) is mandatory in renal transplant recipients (RTxR). Area under the concentration versus time curve (AUC) is the preferred measure for Tac exposure; however, for practical purposes, most centers use trough concentrations as a clinical surrogate. Limited sampling strategies in combination with population pharmacokinetic model-derived Bayesian estimators (popPK-BE) may accurately predict individual AUC. The use of self-collected capillary microsamples could simplify this strategy. This study aimed to investigate the potential of AUC-targeted Tac TDM using capillary microsamples in combination with popPK-BE. METHODS A single-center prospective pharmacokinetic study was conducted in standard-risk RTxR (n = 27) receiving Tac twice daily. Both venous and capillary microsamples (Mitra; Neoteryx, Torrance, CA) were obtained across 2 separate 12-hour Tac dosing intervals (n = 13 samples/AUC). Using popPK-BE, reference AUC (AUCref) was determined for each patient using all venous samples. Different limited sampling strategies were tested for AUC predictions: (1) the empiric sampling scheme; 0, 1, and 3 hours after dose and (2) 3 sampling times determined by the multiple model optimal sampling time function in Pmetrics. Agreement between the predicted AUCs and AUCref were evaluated using C-statistics. Accepted agreement was defined as a total deviation index ≤±15%. RESULTS The AUC from capillary microsamples revealed high accuracy and precision compared with venous AUCref, and 85% of the AUCs had an error within ±11.9%. Applying microsamples at 0, 1, and 3 hours after dose predicted venous AUCref with acceptable agreement. Patients performed self-sampling with acceptable accuracy. CONCLUSIONS Capillary microsampling is patient-centered, making AUC-targeted TDM of Tac feasible without extended hospital stays. Samples obtained 0, 1, and 3 hours after dose, combined with popPK-BE, accurately predict venous Tac AUC.
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El-Sayed A, Vidal J, Khanmoradi K, Knorr JP. Impact of Clotrimazole Fungal Prophylaxis on Tacrolimus Exposure in Kidney Transplant Recipients: A Retrospective Study. Transplant Proc 2021; 53:1583-1588. [PMID: 33962777 DOI: 10.1016/j.transproceed.2021.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 02/10/2021] [Accepted: 03/10/2021] [Indexed: 10/21/2022]
Abstract
Tacrolimus, an immunosuppressant prescribed to reduce the risk of organ rejection, is metabolized by cytochrome P450 and is a substrate for P-glycoprotein. Many medications affect tacrolimus concentrations, making it difficult to maintain exposure within its narrow therapeutic index. Clotrimazole troches, prescribed to posttransplant recipients immediately for the first 30 days for oral candidiasis prevention, are considered nonsystemic. However, data suggest a potential drug interaction, affecting tacrolimus exposure. To assess the magnitude of the effect of clotrimazole on tacrolimus trough levels, 97 kidney transplant recipients, on a stable dose of tacrolimus, were retrospectively evaluated. Tacrolimus trough concentrations were analyzed 7 and 14 days before and after discontinuation of clotrimazole. The median change in tacrolimus trough level was -1.3 ng/mL (confidence interval, -2.5, -1.0; P < .001) at day 7 and -2.8 ng/mL (confidence interval, -3.3, -1.6; P < .001) at day 14 after clotrimazole discontinuation, from a median baseline of 8.9 ng/mL. Overall, a reduction in tacrolimus level was observed in 60% of patients after discontinuation of clotrimazole. When assessing the effect of race and sex, no influence was found on the degree of change in tacrolimus level after clotrimazole discontinuation. In conclusion, clotrimazole exerts a significant interaction on tacrolimus where close monitoring of tacrolimus trough levels after discontinuation of clotrimazole is warranted.
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Affiliation(s)
- Anas El-Sayed
- Department of Pharmacy, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania
| | - Jennifer Vidal
- Department of Pharmacy, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania
| | - Kamran Khanmoradi
- Department of Transplant Surgery, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania
| | - John P Knorr
- Department of Pharmacy, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania.
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Fleming JN, Gebregziabher M, Posadas A, Su Z, McGillicuddy JW, Taber DJ. Impact of a pharmacist-led, mHealth-based intervention on tacrolimus trough variability in kidney transplant recipients: A report from the TRANSAFE Rx randomized controlled trial. Am J Health Syst Pharm 2021; 78:1287-1293. [PMID: 33821958 DOI: 10.1093/ajhp/zxab157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
PURPOSE Nonadherence is a leading cause of death-censored allograft loss in kidney transplant recipients. Strong associations have tied tacrolimus intrapatient variability (IPV) to degree of nonadherence and high tacrolimus IPV to clinical endpoints such as rejection and allograft loss. Nonadherence is a dynamic, complex problem best targeted by multidimensional interventions, including mobile health (mHealth) technologies. METHODS This was a secondary planned analysis of a 12-month, parallel, 2-arm, semiblind, 1:1 randomized controlled trial involving 136 adult kidney transplant recipients. The primary aims of the TRANSAFE Rx study were to assess the efficacy of a pharmacist-led, mHealth-based intervention in improving medication safety and health outcomes for kidney transplant recipients as compared to usual care. RESULTS Patients were randomized equally to 68 patients per arm. The intervention arm demonstrated a statistically significant decrease in tacrolimus IPV over time as compared to the control arm (P = 0.0133). When analyzing a clinical goal of tacrolimus IPV of less than 30%, the 2 groups were comparable at baseline (P = 0.765), but significantly more patients in the intervention group met this criterion at month 12 (P = 0.033). In multivariable modeling, variables that independently impacted tacrolimus IPV included time, treatment effect, age, and warm ischemic time. CONCLUSION This secondary planned analysis of an mHealth-based, pharmacist-led intervention demonstrated an association between the active intervention in the trial and improved tacrolimus IPV. Further prospective studies are required to confirm the mutability of tacrolimus IPV and impact of reducing tacrolimus IPV on long-term clinical outcomes.
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Affiliation(s)
- James N Fleming
- Department of Surgery, Medical University of South Carolina, Charleston, SC, USA
| | - Mulugeta Gebregziabher
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Aurora Posadas
- Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Zemin Su
- Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - John W McGillicuddy
- Department of Surgery, Medical University of South Carolina, Charleston, SC, USA
| | - David J Taber
- Department of Surgery, Medical University of South Carolina, Charleston, SC, USA.,Department of Pharmacy, Ralph H. Johnson VA Medical Center, Charleston, SC, USA
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Robert V, Manos-Sampol E, Manson T, Robert T, Decourchelle N, Gruliere AS, Quaranta S, Moal V, Legris T. Tacrolimus Exposure in Obese Patients: and A Case-Control Study in Kidney Transplantation. Ther Drug Monit 2021; 43:229-237. [PMID: 33027230 DOI: 10.1097/ftd.0000000000000820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/17/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Tacrolimus pharmacokinetics in obese (Ob) patients has been poorly studied. In this article, the authors explored the impact of obesity on tacrolimus exposure in kidney transplant recipients (KTRs) and estimated a more suitable initial dosage in this population. METHODS A retrospective, observational, monocentric case-control study was performed in obese KTRs (BMI > 30 kg/m2) who received tacrolimus between 2013 and 2017 (initial dose: 0.15 mg/kg/d) (actual weight). Nonobese (Nob) controls (BMI <30 kg/m2) were matched for age and sex. Weekly centralized monitoring of tacrolimus trough levels was performed by liquid chromatography/mass spectrometry until the third month (M3). Target trough levels were set between 8 and 10 ng/mL. All patients received antilymphocyte globulin, corticosteroids, and mycophenolate mofetil. RESULTS Of the 541 KTRs, 28 tacrolimus-treated Ob patients were included and compared with 28 NOb-matched controls. With a mean of 22 assays/patient, tacrolimus trough levels were higher in Ob patients (mean 9.9 versus 8.7 ng/mL; P = 0.008); the weight-related dose of Tac was lower at M3 (mean 0.10 versus 0.13 mg/kg/d, P < 0.0001). The tacrolimus concentration to dose (C0/D) was higher in the Ob cohort [mean 116 versus 76 (ng/mL)/(mg/kg/d); P = 0.001]. In Ob patients, a mean decrease of -4.6 mg/d in the 3 months after tacrolimus initiation was required (versus -1.12 in NOb; P = 0.001) to remain within the therapeutic range. Obesity, high mycophenolate mofetil daily dose at M3, and CYP3A5 expression were independently associated with higher tacrolimus exposure. Four dose-adaptation strategies were simulated and compared with the study results. CONCLUSIONS An initial dose calculation based on either ideal or lean body weight may allow for faster achievement of tacrolimus trough level targets in Ob KTRs, who are at risk of overexposure when tacrolimus is initiated at 0.15 mg/kg/d. A prospective study is required to validate alternative dose calculation strategies in these patients.
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Affiliation(s)
- Vincent Robert
- Centre de Néphrologie et Transplantation Rénale, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception
- Aix-Marseille Université
| | - Emmanuelle Manos-Sampol
- Aix-Marseille Université
- Service de Pharmacocinétique et Toxicologie, Laboratoire de Biologie Médicale, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille ; and
| | - Thibaut Manson
- Aix-Marseille Université
- Service de Pharmacocinétique et Toxicologie, Laboratoire de Biologie Médicale, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille ; and
| | - Thomas Robert
- Centre de Néphrologie et Transplantation Rénale, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception
- Aix-Marseille Université
| | - Nicolas Decourchelle
- Pharmacie à Usage Intérieur, Centre Hospitalier Universitaire de la Réunion, Hôpital Félix Guyon, Saint Denis, France
| | - Anne-Sophie Gruliere
- Pharmacie à Usage Intérieur, Centre Hospitalier Universitaire de la Réunion, Hôpital Félix Guyon, Saint Denis, France
| | - Sylvie Quaranta
- Service de Pharmacocinétique et Toxicologie, Laboratoire de Biologie Médicale, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille ; and
| | - Valérie Moal
- Centre de Néphrologie et Transplantation Rénale, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception
- Aix-Marseille Université
| | - Tristan Legris
- Centre de Néphrologie et Transplantation Rénale, Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception
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Yan L, Li YM, Li Y, Bai YJ, Wan ZL, Fan JW, Luo LM, Wang LL, Shi YY. Role of serum CXCL9 and CXCL13 in predicting infection after kidney transplant: A STROBE study. Medicine (Baltimore) 2021; 100:e24762. [PMID: 33725942 PMCID: PMC7982190 DOI: 10.1097/md.0000000000024762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 01/23/2021] [Indexed: 02/05/2023] Open
Abstract
Chemokines are majorly involved in inflammatory and immune responses. The interferon-γ-inducible chemokines C-X-C motif chemokines 9 and 10 (CXCL9 and CXCL10) are considerably associated with Th1 cells and monocytes, and their expression levels rapidly increase during the early episodes of renal allograft rejection and various infectious diseases. CXCL13 is one of the most potent B-cell and T follicular helper-cell chemoattractants. The expression of CXCL13 in the presence of infection indicates an important chemotactic activity in multiple infectious diseases. C-C motif chemokine ligand 2 (CCL2) can attract monocytes and macrophages during inflammatory responses. However, there are no studies on the role of these chemokines in posttransplant infection in kidney transplant recipients.In this study, CXCL9, CXCL10, CXCL13, and CCL2 were analyzed using the Bio-Plex suspension array system before transplant and 30 days after transplant.The serum levels of CXCL9 and CXCL13 30 days after kidney transplant were associated with infection within 1 year after transplant (P = .021 and P = .002, respectively). The serum levels of CXCL9 and CXCL13 before surgery and those of CCL2 and CXCL10 before and after surgery were not associated with infection within 1 year after transplant (P > .05). The combination of postoperative day (POD) 30 CXCL9 and postoperative day 30 CXCL13 provided the best results with an area under the curve of 0.721 (95% confidence interval, 0.591-0.852), with a sensitivity of 71.4% and specificity of 68.5% at the optimal cutoff value of 52.72 pg/mL.As important chemokines, CXCL9 and CXCL13 could be used to predict the occurrence of infection after kidney transplant.
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Affiliation(s)
- Lin Yan
- Department of Laboratory Medicine
| | | | - Yi Li
- Department of Laboratory Medicine
| | | | | | | | | | | | - Yun-Ying Shi
- Department of Nephrology, West China Hospital, Sichuan University, No. 37 Guoxue Xiang, Wuhou District, Chengdu, Sichuan, China
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Faravelli I, Velardo D, Podestà MA, Ponticelli C. Immunosuppression-related neurological disorders in kidney transplantation. J Nephrol 2021; 34:539-555. [PMID: 33481222 PMCID: PMC8036223 DOI: 10.1007/s40620-020-00956-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 12/27/2020] [Indexed: 01/06/2023]
Abstract
A large number of neurological disorders can affect renal transplant recipients, potentially leading to disabling or life-threatening complications. Prevention, early diagnosis and appropriate management of these conditions are critical to avoid irreversible lesions. A pivotal role in the pathogenesis of common post-transplant neurological disorders is played by immunosuppressive therapy. The most frequently administered regimen consists of triple immunosuppression, which comprises a calcineurin inhibitor (CNI), a purine synthesis inhibitor and glucocorticoids. Some of these immunosuppressive drugs may lead to neurological signs and symptoms through direct neurotoxic effects, and all of them may be responsible for the development of tumors or opportunistic infections. In this review, after a brief summary of neurotoxic pathogenetic mechanisms encompassing recent advances in the field, we focus on the clinical presentation of more common and severe immunosuppression-related neurological complications, classifying them by characteristics of urgency and anatomic site. Our goal is to provide a general framework that addresses such clinical issues with a multidisciplinary approach, as these conditions require.
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Affiliation(s)
- Irene Faravelli
- Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), Dino Ferrari Centre, Università degli Studi di Milano, Milan, Italy.
| | - Daniele Velardo
- Neurology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Manuel Alfredo Podestà
- Renal Division, ASST Santi Paolo e Carlo, Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
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Woillard J, Labriffe M, Debord J, Marquet P. Tacrolimus Exposure Prediction Using Machine Learning. Clin Pharmacol Ther 2021; 110:361-369. [DOI: 10.1002/cpt.2123] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/13/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Jean‐Baptiste Woillard
- University of LimogesIPPRITT Limoges France
- INSERMIPPRITTU1248 Limoges France
- Department of Pharmacology and Toxicology CHU Limoges Limoges France
| | - Marc Labriffe
- University of LimogesIPPRITT Limoges France
- INSERMIPPRITTU1248 Limoges France
- Department of Pharmacology and Toxicology CHU Limoges Limoges France
| | - Jean Debord
- University of LimogesIPPRITT Limoges France
- INSERMIPPRITTU1248 Limoges France
- Department of Pharmacology and Toxicology CHU Limoges Limoges France
| | - Pierre Marquet
- University of LimogesIPPRITT Limoges France
- INSERMIPPRITTU1248 Limoges France
- Department of Pharmacology and Toxicology CHU Limoges Limoges France
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50
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Baghai Arassi M, Zeller G, Karcher N, Zimmermann M, Toenshoff B. The gut microbiome in solid organ transplantation. Pediatr Transplant 2020; 24:e13866. [PMID: 32997434 DOI: 10.1111/petr.13866] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/06/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023]
Abstract
Despite ground-breaking advances in allogeneic transplantation, allograft rejection and immunosuppressant-specific complications remain a major challenge in transplant medicine. Growing evidence suggests the human gut microbiome as a potential contributor to transplant outcome and patient health. After breakthrough findings in haematopoietic stem cell transplantation (HSCT), the relevance of the microbiome in solid organ transplantation (SOT) is becoming increasingly clear. Here, we review the role of the microbiome in SOT focusing on its significance for transplant-associated complications such as allograft rejection and infections, and highlight its potential impact on immunosuppressive treatment. Moreover, we shed light on the emerging role of the microbiome as a diagnostic biomarker and therapeutic target and discuss current microbial intervention strategies. In addition, this review includes some practical considerations in designing clinical microbiome trials and offers some advice for the interpretation of the resulting data. Further investigation of the gut microbiome harbours countless clinical application possibilities and holds great promise of having a lasting impact on transplant medicine.
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Affiliation(s)
- Maral Baghai Arassi
- Department of Paediatrics I, University Children's Hospital Heidelberg, Heidelberg, Germany.,Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Georg Zeller
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Nicolai Karcher
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Michael Zimmermann
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Burkhard Toenshoff
- Department of Paediatrics I, University Children's Hospital Heidelberg, Heidelberg, Germany
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