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Huh K, Lee SO, Kim J, Lee SJ, Choe PG, Kang JM, Yang J, Sung H, Kim SH, Moon C, Seok H, Shi HJ, Wi YM, Jeong SJ, Park WB, Kim YJ, Kim J, Ahn HJ, Kim NJ, Peck KR, Kim MS, Kim SI. Prevention of Cytomegalovirus Infection in Solid Organ Transplant Recipients: Guidelines by the Korean Society of Infectious Diseases and the Korean Society for Transplantation. Infect Chemother 2024; 56:101-121. [PMID: 38527780 PMCID: PMC10990892 DOI: 10.3947/ic.2024.0016] [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: 01/26/2024] [Accepted: 03/04/2024] [Indexed: 03/27/2024] Open
Abstract
Cytomegalovirus (CMV) is the most important opportunistic viral pathogen in solid organ transplant (SOT) recipients. The Korean guideline for the prevention of CMV infection in SOT recipients was developed jointly by the Korean Society for Infectious Diseases and the Korean Society of Transplantation. CMV serostatus of both donors and recipients should be screened before transplantation to best assess the risk of CMV infection after SOT. Seronegative recipients receiving organs from seropositive donors face the highest risk, followed by seropositive recipients. Either antiviral prophylaxis or preemptive therapy can be used to prevent CMV infection. While both strategies have been demonstrated to prevent CMV infection post-transplant, each has its own advantages and disadvantages. CMV serostatus, transplant organ, other risk factors, and practical issues should be considered for the selection of preventive measures. There is no universal viral load threshold to guide treatment in preemptive therapy. Each institution should define and validate its own threshold. Valganciclovir is the favored agent for both prophylaxis and preemptive therapy. The evaluation of CMV-specific cell-mediated immunity and the monitoring of viral load kinetics are gaining interest, but there was insufficient evidence to issue recommendations. Specific considerations on pediatric transplant recipients are included.
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Affiliation(s)
- Kyungmin Huh
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang-Oh Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Jungok Kim
- Division of Infectious Diseases, Department of Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Su Jin Lee
- Division of Infectious Diseases, Department of Internal Medicine, Pusan National University School of Medicine, Yangsan, Korea
| | - Pyoeng Gyun Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Ji-Man Kang
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jaeseok Yang
- Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
| | - Heungsup Sung
- Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Si-Ho Kim
- Division of Infectious Diseases, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Chisook Moon
- Division of Infectious Diseases, Department of Internal Medicine, Inje University Busan Paik Hospital, College of Medicine, Busan, Korea
| | - Hyeri Seok
- Division of Infectious Diseases, Department of Internal Medicine, Korea University Ansan Hospital, Korea University Medicine, Ansan, Korea
| | - Hye Jin Shi
- Division of Infectious Diseases, Department of Internal Medicine, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Yu Mi Wi
- Division of Infectious Diseases, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Su Jin Jeong
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Wan Beom Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Youn Jeong Kim
- Division of Infectious Diseases, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Jongman Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyung Joon Ahn
- Department of Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Nam Joong Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Kyong Ran Peck
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Myoung Soo Kim
- Department of Surgery, The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Il Kim
- Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Ribeiro RV, Samman A, Wang A, Wang S, Martinu T, Keshavjee S, Singer LG, Kumar D, Humar A, Cypel M. Incidence of post-transplant cytomegalovirus viremia in patients receiving lungs after ex vivo lung perfusion. JTCVS OPEN 2023; 14:590-601. [PMID: 37425481 PMCID: PMC10328819 DOI: 10.1016/j.xjon.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 07/11/2023]
Abstract
Objectives Cytomegalovirus infection after lung transplant is associated with increased morbidity and mortality. Inflammation, infection, and longer ischemic times are important risk factors for cytomegalovirus infection. Ex vivo lung perfusion has helped to successfully increase the use of high-risk donors over the last decade. However, the impact of ex vivo lung perfusion on post-transplant cytomegalovirus infection is unknown. Methods We performed a retrospective analysis of all adult lung transplant recipients from 2010 to 2020. The primary end point was comparison of cytomegalovirus viremia between patients who received ex vivo lung perfusion donor lungs and patients who received non-ex vivo lung perfusion donor lungs. Cytomegalovirus viremia was defined as cytomegalovirus viral load greater than 1000 IU/mL within 2 years post-transplant. Secondary end points were the time from lung transplant to cytomegalovirus viremia, peak cytomegalovirus viral load, and survival. Outcomes were also compared between the different donor recipient cytomegalovirus serostatus matching groups. Results Included were 902 recipients of non-ex vivo lung perfusion lungs and 403 recipients of ex vivo lung perfusion lungs. There was no significant difference in the distribution of the cytomegalovirus serostatus matching groups. A total of 34.6% of patients in the non-ex vivo lung perfusion group developed cytomegalovirus viremia, as did 30.8% in the ex vivo lung perfusion group (P = .17). There was no difference in time to viremia, peak viral loads, or survival when comparing both groups. Likewise, all outcomes were comparable in the non-ex vivo lung perfusion and ex vivo lung perfusion groups within each serostatus matching group. Conclusions The practice of using more injured donor organs via ex vivo lung perfusion has not affected cytomegalovirus viremia rates and severity in lung transplant recipients in our center.
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Affiliation(s)
- Rafaela V.P. Ribeiro
- Latner Thoracic Research Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Anas Samman
- Latner Thoracic Research Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Aizhou Wang
- Latner Thoracic Research Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Stella Wang
- Biostatistics Research Unit, University Health Network, Toronto, Ontario, Canada
| | - Tereza Martinu
- Latner Thoracic Research Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Toronto Lung Transplant Program, Ajmera Transplant Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
| | - Shaf Keshavjee
- Latner Thoracic Research Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Toronto Lung Transplant Program, Ajmera Transplant Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
| | - Lianne G. Singer
- Toronto Lung Transplant Program, Ajmera Transplant Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
| | - Deepali Kumar
- Toronto Lung Transplant Program, Ajmera Transplant Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
| | - Atul Humar
- Toronto Lung Transplant Program, Ajmera Transplant Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
| | - Marcelo Cypel
- Latner Thoracic Research Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
- Toronto Lung Transplant Program, Ajmera Transplant Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
- University of Toronto, Toronto, Ontario, Canada
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3
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Hume J, Sweeney EL, Lowry K, Fraser C, Clark JE, Whiley DM, Irwin AD. Cytomegalovirus in children undergoing haematopoietic stem cell transplantation: a diagnostic and therapeutic approach to antiviral resistance. Front Pediatr 2023; 11:1180392. [PMID: 37325366 PMCID: PMC10267881 DOI: 10.3389/fped.2023.1180392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023] Open
Abstract
Cytomegalovirus (CMV) is a ubiquitous virus which causes a mild illness in healthy individuals. In immunocompromised individuals, such as children receiving haematopoietic stem cell transplantation, CMV can reactivate, causing serious disease and increasing the risk of death. CMV can be effectively treated with antiviral drugs, but antiviral resistance is an increasingly common complication. Available therapies are associated with adverse effects such as bone marrow suppression and renal impairment, making the choice of appropriate treatment challenging. New agents are emerging and require evaluation in children to establish their role. This review will discuss established and emerging diagnostic tools and treatment options for CMV, including antiviral resistant CMV, in children undergoing haematopoietic stem cell transplant.
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Affiliation(s)
- Jocelyn Hume
- The University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Central Microbiology, Pathology Queensland, Brisbane, QLD, Australia
| | - Emma L. Sweeney
- The University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Kym Lowry
- The University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Chris Fraser
- Blood and Bone Marrow Transplant Program, Queensland Children’s Hospital, Brisbane, QLD, Australia
| | - Julia E. Clark
- Infection Management and Prevention Service, Queensland Children’s Hospital, Brisbane, QLD, Australia
| | - David M. Whiley
- The University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Central Microbiology, Pathology Queensland, Brisbane, QLD, Australia
| | - Adam D. Irwin
- The University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Infection Management and Prevention Service, Queensland Children’s Hospital, Brisbane, QLD, Australia
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Abstract
Infection remains a common cause of death throughout the lifespan of a lung transplant recipient. The increased susceptibility of lung transplant recipients is multifactorial including exposure of the graft to the external environment, impaired mucociliary clearance, and high levels of immunosuppression. Long-term outcomes in lung transplant recipients remain poor compared with other solid organ transplants largely due to deaths from infections and chronic allograft dysfunction. Antibacterial, antifungal, and antiviral prophylaxis may be used after lung transplantation to target a number of different opportunistic infections for varying durations of time. The first-month posttransplant is most commonly characterized by nosocomial infections and donor-derived infections. Following the first month to the first 6 months after transplant-a period of intense immunosuppression-is associated with opportunistic infections. While immunosuppression is reduced after the first year posttransplant, infection remains a risk with community-acquired and rarer infectious agents. Clinicians should be vigilant for infection at all time points after transplant. The use of patient-tailored prophylaxis and treatments help ensure graft and patient survival.
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Veit T, Pan M, Munker D, Arnold P, Dick A, Kunze S, Meiser B, Schneider C, Michel S, Zoller M, Böhm S, Walter J, Behr J, Kneidinger N, Kauke T. Association of CMV-specific T-cell immunity and risk of CMV infection in lung transplant recipients. Clin Transplant 2021; 35:e14294. [PMID: 33749938 DOI: 10.1111/ctr.14294] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/10/2021] [Accepted: 03/16/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Protecting against CMV infection and maintaining CMV in latent state are largely provided by CMV-specific T-cells in lung transplant recipients. The aim of the study was to assess whether a specific T-cell response is associated with the risk for CMV infection in seronegative patients who are at high risk for delayed CMV infection. METHODS All CMV-seronegative recipients (R-) from CMV-seropositive donors (D+) between January 2018 and April 2019 were included and retrospectively screened for CMV infection before and after assessment of CMV-specific cell-mediated immunity. RESULTS Thirty-one of the 50 patients (62%) developed early-onset CMV infection. Lower absolute neutrophil counts were significantly associated with early-onset CMV infection. Antiviral prophylaxis was ceased after 137.2 ± 42.8 days. CMV-CMI were measured at a median of 5.5 months after LTx. 19 patients experienced early and late-onset CMV infection after prophylaxis withdrawal within 15 months post transplantation. Positive CMV-CMI was significantly associated with lower risk of late-onset CMV infection after transplantation in logistic and cox-regression analysis (OR=0.05, p = .01; OR=2,369, p = .026). CONCLUSION D+/R- lung transplant recipients are at high risk of developing early and late-onset CMV infection. Measurement of CMV-CMI soon after transplantation might further define the CMV infection prediction risk in LTx recipients being at high risk for CMV viremia.
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Affiliation(s)
- Tobias Veit
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany
| | - Ming Pan
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Laboratory for Immunogenetics, University of Munich, LMU, Munich, Germany
| | - Dieter Munker
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany
| | - Paola Arnold
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany
| | - Andrea Dick
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Laboratory for Immunogenetics, University of Munich, LMU, Munich, Germany
| | - Susanne Kunze
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Laboratory for Immunogenetics, University of Munich, LMU, Munich, Germany
| | - Bruno Meiser
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Transplant Center, University of Munich, LMU, Munich, Germany
| | - Christian Schneider
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Department of Thoracic Surgery, University of Munich, LMU, Munich, Germany
| | - Sebastian Michel
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Clinic of Cardiac Surgery, University of Munich, LMU, Munich, Germany
| | - Michael Zoller
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Department of Anaesthesiology, University of Munich, LMU, Munich, Germany
| | - Stephan Böhm
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Faculty of Medicine, Virology, Max von Pettenkofer Institute, University of Munich, LMU, Munich, Germany
| | - Julia Walter
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Department of Thoracic Surgery, University of Munich, LMU, Munich, Germany
| | - Jürgen Behr
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany
| | - Nikolaus Kneidinger
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany
| | - Teresa Kauke
- Department of Medicine V, Comprehensive Pneumology Center (CPC-M), German Center for Lung Research (DZL), University Hospital, LMU Munich, Munich, Germany.,Laboratory for Immunogenetics, University of Munich, LMU, Munich, Germany.,Department of Thoracic Surgery, University of Munich, LMU, Munich, Germany
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Hunt J, Chapple KM, Nasar A, Cherrier L, Walia R. Efficacy of low-dose valganciclovir in CMV R+ lung transplant recipients: a retrospective comparative analysis. Multidiscip Respir Med 2021; 16:706. [PMID: 33569173 PMCID: PMC7868948 DOI: 10.4081/mrm.2021.706] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 12/21/2020] [Indexed: 01/06/2023] Open
Abstract
Background Cytomegalovirus (CMV) infection is extremely common after lung transplant and can be associated with significant morbidity and mortality. Current practice suggests the use of 900 mg daily of valganciclovir for CMV prophylaxis, but there is no literature assessing whether 450 mg daily of valganciclovir is sufficient in intermediate CMV risk lung transplant recipients. Therefore, we sought to assess the role of low-dose valganciclovir (LDV) versus high-dose valganciclovir (HDV) prophylaxis in intermediate-risk (R+) recipients. Methods We conducted a retrospective analysis on lung transplant recipients at the Norton Thoracic Institute in Phoenix, Arizona looking at intermediate-risk patients that received either valganciclovir 450 mg per day (LDV) or 900 mg/day (HDV). All patients were followed for 1 year post-transplant for incidence of CMV viremia. The primary outcome was the rate of CMV viremia as determined by a positive CMV polymerase chain reaction ([PCR] >2.7 log copies/mL). Secondary outcomes included rate of adverse events, acute cellular rejection, and mortality. Results The primary analysis included 103 patients (55 in the LDV group, 48 in the HDV group). In the LDV group, 9 patients (16.4%) developed CMV viremia compared to 4 (8.3%) in the HDV group (p=0.221) with no difference observed in adverse event rates between groups. Conclusion There was no statistical difference between groups for the primary outcome. However, the effect size demonstrated in this analysis may be of clinical relevance and valganciclovir 450 mg daily would not be recommended in intermediate risk lung transplant recipients at this time. To confirm our results, further prospective studies enrolling larger patient populations are necessary.
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Affiliation(s)
| | | | | | | | - Rajat Walia
- Department of Pulmonology, St. Joseph's Hospital and Medical Center, Phoenix AZ, USA
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Mabilangan C, Burton C, Nahirniak S, O'Brien S, Preiksaitis J. Transfusion-transmitted and community-acquired cytomegalovirus infection in seronegative solid organ transplant recipients receiving seronegative donor organs. Am J Transplant 2020; 20:3509-3519. [PMID: 32428296 DOI: 10.1111/ajt.16066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/19/2020] [Accepted: 05/03/2020] [Indexed: 01/25/2023]
Abstract
Solid organ transplant (SOT) recipients who are cytomegalovirus (CMV) seronegative (R-) and receive seronegative donor (D-) organs have a small but currently unquantified risk of both transfusion-transmitted CMV (TT-CMV) and community-acquired CMV (CA-CMV). We retrospectively studied the incidence and clinical symptoms of TT-CMV (infection <1 year posttransplant) and CA-CMV (infection >1 year posttransplant) in a cohort of D-/R- adult and pediatric SOT recipients receiving leukoreduced blood products not screened for CMV seronegativity transplanted at our center between 2000 and 2011. CMV infection was defined as IgG seroconversion or detectable CMV antigenemia/DNAemia. Among 536 consecutive D-/R- recipients, 398 (81.8%) had adequate follow-up, and 231 (58%) received cellular blood products (total: 1626 red blood cell units, 470 platelet units) 30 days pretransplant to 90 days posttransplant. We observed no confirmed TT-CMV cases, but 14 CA-CMV cases (64% symptomatic) were seen. The estimated incidence rate of CA-CMV was higher in children (3.0/100 patient years) than adults (0.46/100 patient years, incident rate ratio of 6.52). The absence of TT-CMV over 11 years suggests neither seronegative blood products nor CMV DNA blood donor screening would provide significant incremental safety when blood is already leukoreduced. D-/R- SOT recipients, particularly children, have a significantly higher and ongoing risk of CA-CMV.
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Affiliation(s)
- Curtis Mabilangan
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Catherine Burton
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Susan Nahirniak
- Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | | | - Jutta Preiksaitis
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
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Solidoro P, Patrucco F, Libertucci D, Verri G, Sidoti F, Curtoni A, Boffini M, Simonato E, Rinaldi M, Cavallo R, Costa C. Tailored combined cytomegalovirus management in lung transplantation: a retrospective analysis. Ther Adv Respir Dis 2020; 13:1753466619878555. [PMID: 31566097 PMCID: PMC6769221 DOI: 10.1177/1753466619878555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND There is no univocal prophylactic regimen to prevent cytomegalovirus (CMV) infection/disease in lung transplantation (LT) recipients. The aim of this study is to evaluate short-term clinical outcomes of a tailored combined CMV management approach. METHODS After 1-year follow up, 43 LT patients receiving combined CMV prophylaxis with antiviral agents and CMV-specific IgG were evaluated in a retrospective observational study. Systemic and lung viral infections were investigated by molecular methods on a total of 1134 whole blood and 167 bronchoalveolar lavage (BAL) and biopsy specimens. CMV immunity was assessed by ELISPOT assay. Clinical and therapeutic data were also evaluated. RESULTS We found 2/167 cases of CMV pneumonia (1.2%), both in the donor-positive/recipient-positive (D+/R+) population, and 51/167 cases of CMV pulmonary infection (BAL positivity 30.5%). However, only 32/167 patients (19.1%) were treated due to their weak immunological response at CMV ELISPOT assay. Viremia ⩾100,000 copies/mL occurred in 33/1134 specimens (2.9%). Regarding CMV-serological matching (D/R), the D+/R- population had more CMV viremia episodes (p < 0.05) and fewer viremia-free days (p < 0.001). CONCLUSIONS Compared to previous findings, our study shows a lower incidence of CMV pneumonia and viremia despite the presence of a substantial CMV load. In addition, our findings further confirm the D+/R- group to be a high-risk population for CMV viremia. Overall, a good immunological response seems to protect patients from CMV viremia and pneumonia but not from CMV alveolar replication. The reviews of this paper are available via the supplemental material section.
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Affiliation(s)
- Paolo Solidoro
- Cardiovascular and Thoracic Department, Division of Respiratory Diseases, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Filippo Patrucco
- Cardiovascular and Thoracic Department, Division of Respiratory Diseases, University of Turin, Città della Salute e della Scienza di Torino, C.so Bramante 88/90, Torino, 10126, Italy
| | - Daniela Libertucci
- Cardiovascular and Thoracic Department, Division of Respiratory Diseases, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Giulia Verri
- Cardiovascular and Thoracic Department, Division of Respiratory Diseases, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Francesca Sidoti
- Public Health and Pediatrics Department, Division of Virology, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Antonio Curtoni
- Public Health and Pediatrics Department, Division of Virology, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Massimo Boffini
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Erika Simonato
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Mauro Rinaldi
- Cardiovascular and Thoracic Department, Division of Cardiac Surgery, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Rossana Cavallo
- Public Health and Pediatrics Department, Division of Virology, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Cristina Costa
- Public Health and Pediatrics Department, Division of Virology, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
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Global estimate of phenotypic and genotypic ganciclovir resistance in cytomegalovirus infections among HIV and organ transplant patients; A systematic review and meta-analysis. Microb Pathog 2020; 141:104012. [PMID: 32004622 DOI: 10.1016/j.micpath.2020.104012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 01/25/2020] [Accepted: 01/27/2020] [Indexed: 11/21/2022]
Abstract
Human cytomegalovirus (CMV), an opportunistic pathogen belonging to Herpesviridae family, is considered as one of the major causes of morbidity and mortality among wide variety of patients, particularly in transplant recipients and HIV positive patients. As this virus can be resistant to treatment, frequency of CMV in patients who receive organ transplantation and people suffering from AIDS was studied between 1980 and 2019. Medline (via PubMed), Embase, Web of Science, and the Iranian Database were reviewed, and Comprehensive Meta-Analysis (V2.0, Biostat) software analyzed all data. Finally, we used Cochran's Q-statistic to encounter heterogeneity between different studies. Meta-analyses indicated, GCV resistance was 14.1% (95% CI 11.2-17.7); however, in patients suffering from AIDS and organ transplantation were 19.5% (95% CI 14.7-25.4) and 11.4% (95% CI 8.1-15.8), respectively. There were increasing rates in the prevalence of GCV resistance in CMV among transplant recipients, and HIV positive patients. Therefore, evaluation of these refractory infections is beneficial.
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Natori Y, Alghamdi A, Tazari M, Miller V, Husain S, Komatsu T, Griffiths P, Ljungman P, Orchanian-Cheff A, Kumar D, Humar A, Alexander B, Avery R, Baldanti F, Barnett S, Baum P, Berrey MM, Birnkrant D, Blumberg E, Boeckh M, Boutolleau D, Bowlin T, Brooks J, Chemaly R, Chou S, Cloherty G, Cruikshank W, Dropulic L, Einsele H, Erdman J, Fahle G, Fallon L, Gillis H, Gonzalez D, Griffiths P, Gunter K, Hirsch H, Hodowanec A, Humar A, Hunt P, Josephson F, Komatsu T, Kotton C, Krause P, Kuhr F, Lademacher C, Lanier R, Lazarus T, Leake J, Leavitt R, Lehrman SN, Li L, Ljungman P, Lodding PI, Lundgren J, Martinez-Murillo F(P, Mayer H, McCutcheon M, McKinnon J, Mertens T, Miller V, Modarress K, Mols J, Mossman S, Murata Y, Murawski D, Murray J, Natori Y, Nichols G, O’Rear J, Peggs K, Pikis A, Prichard M, Razonable R, Riches M, Roberts J, Saber W, Sayada C, Singer M, Stamminger T, Wijatyk A, Yu D, Zeiher B. Use of Viral Load as a Surrogate Marker in Clinical Studies of Cytomegalovirus in Solid Organ Transplantation: A Systematic Review and Meta-analysis. Clin Infect Dis 2019; 66:617-631. [PMID: 29020339 DOI: 10.1093/cid/cix793] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/01/2017] [Indexed: 12/22/2022] Open
Abstract
Symptomatic cytomegalovirus (CMV) disease has been the standard endpoint for clinical trials in organ transplant recipients. Viral load may be a more relevant endpoint due to low frequency of disease. We performed a meta-analysis and systematic review of the literature. We found several lines of evidence to support the validity of viral load as an appropriate surrogate end-point, including the following: (1) viral loads in CMV disease are significantly greater than in asymptomatic viremia (odds ratio, 9.3 95% confidence interval, 4.6-19.3); (2) kinetics of viral replication are strongly associated with progression to disease; (3) pooled incidence of CMV viremia and disease is significantly lower during prophylaxis compared with the full patient follow-up period (viremia incidence: 3.2% vs 34.3%; P < .001) (disease incidence: 1.1% vs 13.0%; P < .001); (4) treatment of viremia prevented disease; and (5) viral load decline correlated with symptom resolution. Based on the analysis, we conclude that CMV load is an appropriate surrogate endpoint for CMV trials in organ transplant recipients.
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Affiliation(s)
- Yoichiro Natori
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
| | - Ali Alghamdi
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada.,King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Mahmood Tazari
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
| | - Veronica Miller
- Forum for Collaborative Research, University of California, Berkeley
| | - Shahid Husain
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
| | - Takashi Komatsu
- Division of Antiviral Products, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
| | - Paul Griffiths
- Institute for Immunity and Transplantation, University College London Medical School, United Kingdom
| | - Per Ljungman
- Division of Hematology, Department of Medicine Huddigne, Karolinksa Institutet, Stockholm, Sweden
| | - Ani Orchanian-Cheff
- Library and Information Services, University Health Network, Toronto, Ontario, Canada
| | - Deepali Kumar
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
| | - Atul Humar
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
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Razonable RR, Humar A. Cytomegalovirus in solid organ transplant recipients-Guidelines of the American Society of Transplantation Infectious Diseases Community of Practice. Clin Transplant 2019; 33:e13512. [PMID: 30817026 DOI: 10.1111/ctr.13512] [Citation(s) in RCA: 385] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 02/11/2019] [Indexed: 12/11/2022]
Abstract
Cytomegalovirus (CMV) is one of the most common opportunistic infections that affect the outcome of solid organ transplantation. This updated guideline from the American Society of Transplantation Infectious Diseases Community of Practice provides evidence-based and expert recommendations for screening, diagnosis, prevention, and treatment of CMV in solid organ transplant recipients. CMV serology to detect immunoglobulin G remains as the standard method for pretransplant screening of donors and transplant candidates. Antiviral prophylaxis and preemptive therapy are the mainstays of CMV prevention. The lack of a widely applicable viral load threshold for diagnosis and preemptive therapy is highlighted, as a result of variability of CMV nucleic acid testing, even in the contemporary era when calibrators are standardized. Valganciclovir and intravenous ganciclovir remain as drugs of choice for CMV management. Strategies for managing drug-resistant CMV infection are presented. There is an increasing use of CMV-specific cell-mediated immune assays to stratify the risk of CMV infection after solid organ transplantation, but their role in optimizing CMV prevention and treatment efforts has yet to be demonstrated. Specific issues related to pediatric transplant recipients are discussed.
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Affiliation(s)
| | - Atul Humar
- University Health Network, Toronto, Ontario, Canada.,Transplant Institute, University of Toronto, Toronto, Ontario, Canada
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12
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Monforte V, Sintes H, López-Gallo C, Delgado M, Santos F, Zurbano F, Solé A, Gavaldá J, Borro JM, Redel-Montero J, Cifrian JM, Pastor A, Román A, Ussetti P. Risk factors, survival, and impact of prophylaxis length in cytomegalovirus-seropositive lung transplant recipients: A prospective, observational, multicenter study. Transpl Infect Dis 2017; 19. [PMID: 28294487 DOI: 10.1111/tid.12694] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 07/15/2016] [Accepted: 12/24/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND The optimal length of cytomegalovirus (CMV) prophylaxis in lung transplantation according to CMV serostatus is not well established. METHODS We have performed a prospective, observational, multicenter study to determine the incidence of CMV infection and disease in 92 CMV-seropositive lung transplant recipients (LTR), their related outcomes and risk factors, and the impact of prophylaxis length. RESULTS At 18 months post transplantation, 37 patients (40%) developed CMV infection (23 [25%]) or disease (14 [15.2%]). Overall mortality was higher in patients with CMV disease (64.3% vs 10.2%; P<.001), but only one patient died from CMV disease. In the multivariate analysis, CMV disease was an independent death risk factor (odds ratio [OR] 18.214, 95% confidence interval [CI] 4.120-80.527; P<.001). CMV disease incidence was higher in patients with 90-day prophylaxis than in those with 180-day prophylaxis (31.3% vs 11.8%; P=.049). Prophylaxis length was an independent risk factor for CMV disease (OR 4.974, 95% CI 1.231-20.094; P=.024). Sixteen patients withdrew from prophylaxis because of adverse events. CONCLUSION CMV infection and disease in CMV-seropositive LTR remain frequent despite current prophylaxis. CMV disease increases mortality, whereas 180-day prophylaxis reduces the incidence of CMV disease.
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Affiliation(s)
- Victor Monforte
- Respiratory Department, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain.,Ciber Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Helena Sintes
- Respiratory Department, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain.,Ciber Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Maria Delgado
- Thoracic Surgery Department, Complexo Hospitalario Universitario A Coruña, A Coruña, Spain
| | | | - Felipe Zurbano
- Respiratory Department, Hospital Marqués de Valdecilla, Santander, Spain
| | - Amparo Solé
- Respiratory Department, Hospital La Fe, Valencia, Spain
| | - Joan Gavaldá
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Barcelona, Spain
| | - Jose Maria Borro
- Thoracic Surgery Department, Complexo Hospitalario Universitario A Coruña, A Coruña, Spain
| | | | | | - Amparo Pastor
- Respiratory Department, Hospital La Fe, Valencia, Spain
| | - Antonio Román
- Respiratory Department, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain.,Ciber Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Piedad Ussetti
- Ciber Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain.,Respiratory Department, Hospital Puerta de Hierro, Madrid, Spain
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Prophylactic and therapeutic adenoviral vector-based multivirus-specific T-cell immunotherapy for transplant patients. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2016; 3:16058. [PMID: 27606351 PMCID: PMC4997746 DOI: 10.1038/mtm.2016.58] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 07/07/2016] [Accepted: 07/11/2016] [Indexed: 01/03/2023]
Abstract
Viral infections including cytomegalovirus, Epstein-Barr virus, adenovirus, and BK virus
are a common and predictable problem in transplant recipients. While cellular immune
therapies have been successfully used to tackle infectious complications in transplant
recipients, manufacturing immunotherapies to address the multitude of possible pathogens
can be technically challenging and labor-intensive. Here we describe a novel adenoviral
antigen presentation platform (Ad-MvP) as a tool for rapid generation of
multivirus-specific T-cells in a single step. Ad-MvP encodes 32 CD8+ T-cell epitopes from
cytomegalovirus, Epstein-Barr virus, adenovirus, and BK virus as a contiguous polyepitope.
We demonstrate that Ad-MvP vector can be successfully used for rapid in vitro
expansion of multivirus-specific T-cells from transplant recipients and in vivo
priming of antiviral T-cell immunity. Most importantly, using an in vivo murine
model of Epstein-Barr virus-induced lymphoma, we also show that adoptive immunotherapy
with Ad-MvP expanded autologous and allogeneic multivirus-specific T-cells is highly
effective in controlling Epstein-Barr virus tumor outgrowth and improving overall
survival. We propose that Ad-MvP has wide ranging therapeutic applications in greatly
facilitating in vivo priming of antiviral T-cells, the generation of third-party
T-cell banks as “off-the-shelf” therapeutics as well as autologous T-cell
therapies for transplant patients.
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Incidence, Risk Factors and Outcomes of Delayed-onset Cytomegalovirus Disease in a Large Retrospective Cohort of Lung Transplant Recipients. Transplantation 2015; 99:1658-66. [PMID: 25675196 DOI: 10.1097/tp.0000000000000549] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Cytomegalovirus (CMV) replication and disease commonly occur in lung transplant recipients after stopping anti-CMV prophylaxis. The epidemiology of CMV disease is not well studied, given the difficulties in assembling representative study populations with prolonged follow-up. We hypothesized that delayed-onset CMV disease (>100 days after transplantation) occurs more commonly than early-onset CMV disease in lung transplant recipients, and is associated with an increased risk of death. METHODS We assembled a large cohort of lung transplant recipients using 2004 to 2010 International Classification of Diseases, Ninth Revision, Clinical Modification billing data from 3 Agency for Healthcare Research and Quality State Inpatient Databases, and identified demographics, comorbidities, CMV disease coded during hospital readmission and inpatient death. We used Cox proportional hazard multivariate analyses to assess for an independent association between delayed-onset CMV disease and death. RESULTS In the cohort of 1528 lung transplant recipients from 12 transplant centers, delayed-onset CMV disease occurred in 13.7% (n = 210) and early-onset CMV disease occurred in 3.3% (n = 51). Delayed-onset CMV pneumonitis was associated with inpatient death longer than 100 days after transplantation (adjusted hazard ratio, 1.6; 95% confidence interval [95% CI], 1.1-2.5), after adjusting for transplant failure/rejection (aHR, 2.5; 95% CI, 1.5-4.1), bacterial pneumonia (aHR, 2.8; 95% CI, 2.0-3.9), viral pneumonia (aHR, 1.5; 95% CI, 1.1-2.1), fungal pneumonia (aHR, 1.8; 95% CI, 1.3-2.3), single lung transplant (aHR, 1.3; 95% CI, 1.0-1.7), and idiopathic pulmonary fibrosis (aHR, 1.4; 95% CI, 1.0-1.8). CONCLUSIONS Delayed-onset CMV disease occurred more commonly than early-onset CMV disease among lung transplant recipients. These results suggest that delayed-onset CMV pneumonitis was independently associated with an increased risk of death.
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Sales MDC, Frota Filho JD, Aguzzoli C, Souza LD, Rösler ÁM, Lucio EA, Leães PE, Pontes MRN, Lucchese FA. Aortic Center: specialized care improves outcomes and decreases mortality. Braz J Cardiovasc Surg 2015; 29:494-504. [PMID: 25714201 PMCID: PMC4408810 DOI: 10.5935/1678-9741.20140122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Accepted: 08/24/2014] [Indexed: 11/28/2022] Open
Abstract
Objective To compare in-hospital outcomes in aortic surgery in our cardiac surgery unit,
before and after foundation of our Center for Aortic Surgery (CTA). Methods Prospective cohort with non-concurrent control. Foundation of CTA required
specialized training of surgical, anesthetic and intensive care unit teams,
routine neurological monitoring, endovascular and hybrid facilities, training of
the support personnel, improvement of the registry and adoption of specific
protocols. We included 332 patients operated on between: January/2003 to
December/2007 (before-CTA, n=157, 47.3%); and January/2008 to December/2010 (CTA,
n=175, 52.7%). Baseline clinical and demographic data, operative variables,
complications and in-hospital mortality were compared between both groups. Results Mean age was 58±14 years, with 65% male. Group CTA was older, had higher rate of
diabetes, lower rates of COPD and HF, more non-urgent surgeries, endovascular
procedures, and aneurysms. In the univariate analysis, CTA had lower mortality
(9.7 vs. 23.0%, P=0.008), which occurred consistently across
different diseases and procedures. Other outcomes which were reduced in CTA
included lower rates of reinterventions (5.7 vs 11%, P=0.046),
major complications (20.6 vs. 33.1%, P=0.007), stroke (4.6 vs.
10.9%, P=0.045) and sepsis (1.7 vs. 9.6%,
P=0.001), as compared to before-CTA. Multivariable analysis
adjusted for potential counfounders revealed that CTA was independently associated
with mortality reduction (OR=0.23, IC 95% 0.08 – 0.67, P=0.007).
CTA independent mortality reduction was consistent in the multivariable analysis
stratified by disease (aneurysm, OR=0.18, CI 95% 0.03 – 0.98,
P=0.048; dissection, OR=0.31, CI 95% 0.09 – 0.99,
P=0.049) and by procedure (hybrid, OR=0.07, CI 95% 0.007 –
0.72, P=0.026; Bentall, OR=0.18, CI 95% 0.038 – 0.904,
P=0.037). Additional multivariable predictors of in-hospital
mortality included creatinine (OR=1.7 [1.1-2.6], P=0.008), urgent
surgery (OR=5.0 [1.5-16.7], P=0.008) and thoracoabdominal
aneurysm (OR=24.6 [3.1-194.1], P=0.002). Conclusion Thoracic aorta surgery in specialized center was associated with lower incidence
of complications and all-cause mortality as compared to usual care.
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Affiliation(s)
- Marcela da Cunha Sales
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - José Dario Frota Filho
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Cristiane Aguzzoli
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Leonardo Dornelles Souza
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Álvaro Machado Rösler
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Eraldo Azevedo Lucio
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Paulo Ernesto Leães
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Mauro Ricardo Nunes Pontes
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
| | - Fernando Antônio Lucchese
- Cardiovascular Surgery Division, Hospital São Francisco, Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brazil
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Meta-Analysis and Potential Role of Preexisting Heterosubtypic Cellular Immunity Based on Variations in Disease Severity Outcomes for Influenza Live Viral Challenges in Humans. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2015; 22:949-56. [PMID: 26084515 DOI: 10.1128/cvi.00101-15] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 06/14/2015] [Indexed: 11/20/2022]
Abstract
Influenza live viral challenges in humans are valuable models for testing the efficacy of vaccines and antiviral agents. Volunteers are treated with an investigational agent, and their clinical outcomes postchallenge are compared to those of placebo-treated volunteers. Despite using a common protocol, similar recruitment criteria, and similar doses of the same challenge strain, we noticed differences in disease severity outcomes between the placebo groups from different studies. We investigated whether these differences were significant and, if so, whether any pattern and its possible causes could be identified. We compared the clinical outcomes postchallenge in placebo groups from five clinical studies carried out between 2008 and 2013. Correlations between the prechallenge heterosubtypic cellular response (gamma interferon [IFN-γ]) and postchallenge clinical outcomes were also investigated in one study. Placebo groups from studies carried out between 2009 and 2010 attained significantly reduced (P < 0.05) symptom scores postchallenge compared to those of placebo groups from studies carried out in either 2008 or 2013. Also, in a 2010 study, the frequency of high-influenza heterosubtypic cellular responders prevaccination was significantly lower in the test group (FLU-v) than that in the placebo group (P = 0.04). Moreover, the increased preexisting heterosubtypic cellular response of the placebo group correlated with reductions in symptom score and viral shedding postchallenge (P ≤ 0.023). Only postvaccination did the test group display an equivalent correlation. The last influenza pandemic coincided with a significant reduction in disease severity outcomes. This reduction also appears to correlate with increased preexisting influenza heterosubtypic cellular responses. (This study is registered at ClinicalTrials.gov under registration number NCT01226758.).
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Hanson K, Alexander B. Strategies for the prevention of infection after solid organ transplantation. Expert Rev Anti Infect Ther 2014; 4:837-52. [PMID: 17140359 DOI: 10.1586/14787210.4.5.837] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Infection is a frequent complication of organ transplantation and is associated with significant morbidity and mortality. Preventative antimicrobial strategies are a key component of the care received by transplant patients. This review summarizes the evidence supporting anti-infective prophylaxis in this setting. Specific recommendations for the prevention of bacterial, fungal, viral and parasitic infection after transplant are made, with a focus on recent developments in the field of transplant infectious diseases.
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Affiliation(s)
- Kimberly Hanson
- Duke University Medical Center, Division of Infectious Diseases and International Health, Duke Clinical Microbiology Laboratory, NC 27710, USA.
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18
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Ganciclovir-resistant cytomegalovirus infections among lung transplant recipients are associated with poor outcomes despite treatment with foscarnet-containing regimens. Antimicrob Agents Chemother 2013; 58:128-35. [PMID: 24145525 DOI: 10.1128/aac.00561-13] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Ganciclovir-resistant cytomegalovirus (CMV) infections are reported infrequently among lung transplant recipients receiving extended valganciclovir prophylaxis. We performed a single-center, retrospective review of ganciclovir-resistant CMV infections in a program that employed valganciclovir prophylaxis for ≥6 months after lung transplant. CMV infections were diagnosed in 28% (170/607) of patients. UL97 mutations were detected in 9.4% (16/170) of CMV-infected patients at a median of 8.5 months posttransplant (range, 5 to 21) and despite prophylaxis for a median of 7 months (range, 4 to 21). UL97 mutations were canonical; 25% (4/16) of strains carried concurrent UL54 mutations. Ganciclovir-resistant CMV was more likely with breakthrough infections (75% [12/16] versus 19% [30/154]; P = 0.00001) and donor positive/recipient negative (D+/R-) serostatus (75% versus 45% [69/154]; P = 0.03). The median whole-blood CMV load was 4.13 log10 copies/cm(3) (range, 2.54 to 5.53), and 93% (14/15) of patients had low-moderate immune responses (Cylex Immunoknow). Antiviral therapy was successful, failed, or eradicated viremia followed by relapse in 12% (2/16), 31% (5/16), and 56% (9/16) of patients, respectively. Eighty-seven percent (14/16) of patients were treated with foscarnet-containing regimens; toxicity developed in 78% (11/14) of these. Median viral load half-life and time to viremia eradication among foscarnet-treated patients were 2.6 and 23 days, respectively, and did not correlate with protection from relapse. Sixty-nine percent (11/16) of patients developed CMV pneumonitis, and 25% (4/16) died of it. Serum viral load was independently associated with death among foscarnet-treated patients (P = 0.04). In conclusion, ganciclovir-resistant CMV infections remained a major cause of morbidity and mortality following lung transplantation. Foscarnet-based regimens often eradicated viremia rapidly but were ineffective in the long term and limited by toxicity.
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19
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Posadas Salas M, Taber D, Chua E, Pilch N, Chavin K, Thomas B. Critical analysis of valganciclovir dosing and renal function on the development of cytomegalovirus infection in kidney transplantation. Transpl Infect Dis 2013; 15:551-8. [DOI: 10.1111/tid.12133] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 12/27/2012] [Accepted: 03/17/2013] [Indexed: 01/14/2023]
Affiliation(s)
- M.A. Posadas Salas
- Department of Medicine; Division of Nephrology and Hypertension; Medical University of South Carolina; Charleston South Carolina USA
| | - D.J. Taber
- Division of Transplant Surgery; Medical University of South Carolina; Charleston South Carolina USA
| | - E. Chua
- Department of Medicine; Division of Nephrology and Hypertension; Medical University of South Carolina; Charleston South Carolina USA
| | - N. Pilch
- Department of Pharmacy Services; Medical University of South Carolina; Charleston South Carolina USA
| | - K. Chavin
- Division of Transplant Surgery; Medical University of South Carolina; Charleston South Carolina USA
| | - B. Thomas
- Department of Medicine; Division of Nephrology and Hypertension; Medical University of South Carolina; Charleston South Carolina USA
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20
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Mizushima D, Nishijima T, Gatanaga H, Tsukada K, Teruya K, Kikuchi Y, Oka S. Preemptive therapy prevents cytomegalovirus end-organ disease in treatment-naïve patients with advanced HIV-1 infection in the HAART era. PLoS One 2013; 8:e65348. [PMID: 23724140 PMCID: PMC3665626 DOI: 10.1371/journal.pone.0065348] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 04/24/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The efficacy of preemptive therapy against cytomegalovirus (CMV) infection remains unknown in treatment-naïve patients with advanced HIV-1 infection in the HAART era. METHODS The subjects of this single-center observation study were 126 treatment-naïve HIV-1 infected patients with positive CMV viremia between January 1, 2000 and December 31, 2006. Inclusion criteria were age more than 17 years, CD4 count less than 100/μl, plasma CMV DNA positive, never having received antiretroviral therapy (ART) and no CMV end-organ disease (EOD) at first visit. The incidence of CMV-EOD was compared in patients with and without preemptive therapy against CMV-EOD. The effects of the CMV preemptive therapy were estimated in uni- and multivariate Cox hazards models. RESULTS CMV-EOD was diagnosed in 30 of the 96 patients of the non-preemptive therapy group (31%, 230.3 per 1000 person-years), compared with 3 of the 30 patients of the preemptive therapy group (10%, 60.9 per 1000 person-years). Univariate (HR = 0.286; 95%CI, 0.087-0.939; p = 0.039) and multivariate (adjusted HR = 0.170; 95%CI, 0.049-0.602; p = 0.005) analyses confirmed that CMV-EOD is significantly prevented by CMV preemptive therapy. Multivariate analysis showed that plasma CMV DNA level correlated significantly with CMV-EOD (per log10/ml, adjusted HR = 1.941; 95%CI, 1.266-2.975; p = 0.002). Among the 30 patients on preemptive therapy, 7 (23.3%) developed grade 3-4 leukopenia. The mortality rate was not significantly different between the two groups (p = 0.193, Log-rank test). CONCLUSIONS The results indicate that preemptive therapy lowers the incidence of CMV-EOD by almost 25%. Preemptive therapy for treatment-naïve patients with CMV viremia is effective, although monitoring of potential treatment-related side effects is required.
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Affiliation(s)
- Daisuke Mizushima
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
- Center for AIDS Research, Kumamoto University, Kumamoto, Japan
| | - Takeshi Nishijima
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
- Center for AIDS Research, Kumamoto University, Kumamoto, Japan
| | - Hiroyuki Gatanaga
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
- Center for AIDS Research, Kumamoto University, Kumamoto, Japan
- * E-mail:
| | - Kunihisa Tsukada
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Katsuji Teruya
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yoshimi Kikuchi
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Shinichi Oka
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
- Center for AIDS Research, Kumamoto University, Kumamoto, Japan
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21
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Management strategies for cytomegalovirus infection and disease in solid organ transplant recipients. Infect Dis Clin North Am 2013; 27:317-42. [PMID: 23714343 DOI: 10.1016/j.idc.2013.02.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cytomegalovirus is the most common viral pathogen that affects solid organ transplant recipients. It directly causes fever, myelosuppression, and tissue-invasive disease, and indirectly, it negatively impacts allograft and patient survival. Nucleic acid amplification testing is the preferred method to confirm the diagnosis of CMV infection. Prevention of CMV disease using antiviral prophylaxis or preemptive therapy is critical in the management of transplant patients. Intravenous ganciclovir and oral valganciclovir are the first line drugs for antiviral treatment. This article provides a comprehensive review of the current epidemiology, diagnosis, prevention and treatment of CMV infection in solid organ transplant recipients.
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Razonable RR, Humar A. Cytomegalovirus in solid organ transplantation. Am J Transplant 2013; 13 Suppl 4:93-106. [PMID: 23465003 DOI: 10.1111/ajt.12103] [Citation(s) in RCA: 363] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Meyer KC, Glanville AR. Bronchiolitis Obliterans Syndrome and Chronic Lung Allograft Dysfunction: Evolving Concepts and Nomenclature. BRONCHIOLITIS OBLITERANS SYNDROME IN LUNG TRANSPLANTATION 2013. [PMCID: PMC7122385 DOI: 10.1007/978-1-4614-7636-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Bronchiolitis obliterans syndrome (BOS) eventually occurs in the majority of lung transplant recipients who survive beyond 1 year, can greatly impair quality of life, and is, directly or indirectly, the major cause of delayed allograft dysfunction and recipient death. A number of associated events or conditions are strongly associated with the risk for developing BOS; these include acute rejection, gastroesophageal reflux, infections, and autoimmune reactions that can occur in the setting of alloimmune responses to the lung allograft as recipients are given intense immunosuppression to prevent allograft rejection. The term chronic lung allograft dysfunction (CLAD) is being increasingly used to refer to recipients with late allograft dysfunction that meets the spirometric criteria for the diagnosis of BOS, but clinicians should recognize that such dysfunction can occur for a variety of reasons other than BOS. The recently identified entity of restrictive allograft syndrome, which is now recognized as a relatively distinct phenotype of CLAD, has features that differentiate it from classic obstructive BOS. A number of other entities that can also significantly affect allograft function must also be considered when significant allograft dysfunction is encountered following lung transplantation.
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Hammond S, Martin S, Roberts K, Gabardi S, Fuhlbrigge A, Camp P, Goldberg H, Marty F, Baden L. Cytomegalovirus disease in lung transplantation: impact of recipient seropositivity and duration of antiviral prophylaxis. Transpl Infect Dis 2012; 15:163-70. [DOI: 10.1111/tid.12036] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Revised: 07/27/2012] [Accepted: 08/09/2012] [Indexed: 11/29/2022]
Affiliation(s)
| | - S.T. Martin
- Department of Pharmacy; Brigham and Women's Hospital; Boston; Massachusetts; USA
| | - K. Roberts
- Department of Pharmacy; Brigham and Women's Hospital; Boston; Massachusetts; USA
| | - S. Gabardi
- Department of Pharmacy; Brigham and Women's Hospital; Boston; Massachusetts; USA
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Neuringer IP, Noone P, Cicale RK, Davis K, Aris RM. Managing complications following lung transplantation. Expert Rev Respir Med 2012; 3:403-23. [PMID: 20477331 DOI: 10.1586/ers.09.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Lung transplantation has become a proven therapeutic option for patients with end-stage lung disease, extending life and providing improved quality of life to those who otherwise would continue to be breathless and oxygen-dependent. Over the past 20 years, considerable experience has been gained in understanding the multitude of medical and surgical issues that impact upon patient survival. Today, clinicians have an armamentarium of tools to manage diverse problems such as primary graft dysfunction, acute and chronic allograft rejection, airway anastomotic issues, infectious complications, renal dysfunction, diabetes and osteoporosis, hematological and gastrointestinal problems, malignancy, and other unique issues that confront immunosuppressed solid organ transplant recipients.
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Affiliation(s)
- Isabel P Neuringer
- Division of Pulmonary and Critical Care Medicine and the Cystic Fibrosis/Pulmonary Research and Treatment Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7524, USA.
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Fariñas MC, Torre-Cisneros J, Pahissa A. [Lights and shadows of cytomegalovirus infection in solid organ transplantation]. Enferm Infecc Microbiol Clin 2012; 29 Suppl 6:1-3. [PMID: 22541913 DOI: 10.1016/s0213-005x(11)70048-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Cytomegalovirus (CMV) develops in 30-80% of patients undergoing solid organ transplantation (SOT). The incidence and presence of symptomatic disease varies depending on the type of transplant, the presence of associated risk factors, the intensity of immunosuppression, and the prevention strategies used. The impact of CMV on SOT is due not only to the effects of CMV disease per se, but also to its multiple indirect effects resulting from its immunomodulatory role and immunoactivation caused by viral latency. The two prophylactic strategies used (universal prophylaxis and preemptive therapy) are equally useful. Both strategies have advantages and disadvantages, and uncertainties remain on the populations that should receive prophylaxis and for how long. Viral monitoring to detect CMV infection is important for diagnosis, prognosis and evaluation of treatment response. The new real-time polymerase chain reaction techniques have provided numerous advantages but standardization remains an issue and common reference values are required. Specific anti-CMV drugs are available but issues such as the role of valganciclovir versus ganciclovir, the development of resistances and optimal treatment length are still being debated. Complementary therapy with mTOR inhibitors and vaccine strategies against CMV are alternatives for which conclusive data are lacking.
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Affiliation(s)
- M Carmen Fariñas
- Unidad de Enfermedades Infecciosas, Hospital Universitario Marqués de Valdecilla, IFIMAV, Universidad de Cantabria, Santander, España.
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Wiita A, Roubinian N, Khan Y, Chin-Hong P, Singer J, Golden J, Miller S. Cytomegalovirus disease and infection in lung transplant recipients in the setting of planned indefinite valganciclovir prophylaxis. Transpl Infect Dis 2012; 14:248-58. [DOI: 10.1111/j.1399-3062.2012.00723.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 10/18/2011] [Accepted: 12/08/2011] [Indexed: 11/28/2022]
Affiliation(s)
- A.P. Wiita
- Department of Laboratory Medicine; University of California; San Francisco; California; USA
| | - N. Roubinian
- Division of Pulmonary and Critical Care; Department of Medicine; University of California; San Francisco; California; USA
| | - Y. Khan
- Clinical Microbiology Laboratory; University of California; San Francisco; California; USA
| | - P.V. Chin-Hong
- Division of Infectious Diseases; Department of Medicine; University of California; San Francisco; California; USA
| | - J.P. Singer
- Division of Pulmonary and Critical Care; Department of Medicine; University of California; San Francisco; California; USA
| | - J.A. Golden
- Division of Pulmonary and Critical Care; Department of Medicine; University of California; San Francisco; California; USA
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Patel N, Snyder LD, Finlen-Copeland A, Palmer SM. Is prevention the best treatment? CMV after lung transplantation. Am J Transplant 2012; 12:539-44. [PMID: 22070601 DOI: 10.1111/j.1600-6143.2011.03837.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cytomegalovirus (CMV) is the most prevalent opportunistic infection that occurs in lung-transplant recipients. In addition to its direct morbidity, multiple studies have demonstrated that CMV, in particular CMV pneumonia, is associated with an increased risk for chronic graft dysfunction manifested as bronchiolitis obliterans syndrome (BOS) and worse posttransplant survival. Therefore, prevention of CMV remains an important goal to improve long-term lung-transplant outcomes. Although centers often employed 3 months of prophylaxis in at-risk patients after lung transplantation, a significant proportion of patients still developed infection or disease after the discontinuation of prophylaxis, highlighting the need for more effective approaches to CMV prevention. A number of early single-center reports suggested benefit to extending prophylaxis to longer durations, but concerns regarding cost, late-onset CMV disease, viral resistance and bone marrow toxicity limited enthusiasm for longer durations. However, several recent studies including a multicenter, prospective, randomized, double-blinded clinical trial have demonstrated significant benefits to extending CMV prophylaxis beyond 3 months. Although some areas of controversy remain, the clinical implications of these recent studies suggest that extending prophylaxis with valganciclovir up to 12 months is clearly beneficial for CMV prevention after lung transplantation.
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Affiliation(s)
- N Patel
- Department of Pharmacy Department of Medicine, Duke University, Durham, NC, USA
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Clauss HE, Bettiker RL, Samuel R, Truant AL, Jungkind D. Infections in Heart and Lung Transplant Recipients. CLINICAL MICROBIOLOGY NEWSLETTER 2012; 34:19-25. [PMID: 32287682 PMCID: PMC7132514 DOI: 10.1016/j.clinmicnews.2012.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Patients undergoing thoracic organ transplantation procedures involving the heart or lung are at increased risk for developing a wide variety of infections due to their underlying immunosuppression and/or other factors. Lung transplant recipients are at high risk for developing infections caused by bacteria, viruses, and opportunistic fungi, whereas heart transplant recipients are at risk for developing infections caused by these same microorganisms, as well as parasitic infections, including toxoplasmosis and New World trypanosomiasis. This review will highlight the various infections that thoracic organ transplant recipients may develop following their procedures.
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Affiliation(s)
- Heather E. Clauss
- Section of Infectious Diseases, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Robert L. Bettiker
- Section of Infectious Diseases, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Rafik Samuel
- Section of Infectious Diseases, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Allan L. Truant
- Clinical Microbiology, Immunology, and Virology Laboratories, Department of Pathology and Laboratory Medicine, Temple University Hospital and School of Medicine, Philadelphia, Pennsylvania
| | - Donald Jungkind
- Jefferson University Hospital and School of Medicine, Philadelphia, Pennsylvania
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Couzi L, Helou S, Bachelet T, Moreau K, Martin S, Morel D, Lafon ME, Boyer B, Alain S, Garrigue I, Merville P. High incidence of anticytomegalovirus drug resistance among D+R- kidney transplant recipients receiving preemptive therapy. Am J Transplant 2012; 12:202-9. [PMID: 21967659 DOI: 10.1111/j.1600-6143.2011.03766.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Anti-cytomegalovirus (CMV) prophylaxis is recommended in D+R- kidney transplant recipients (KTR), but is associated with a theoretical increased risk of developing anti-CMV drug resistance. This hypothesis was retested in this study by comparing 32 D+R- KTR who received 3 months prophylaxis (valganciclovir) with 80 D+R- KTR who received preemptive treatment. The incidence of CMV infections was higher in the preemptive group than in the prophylactic group (60% vs. 34%, respectively; p = 0.02). Treatment failure (i.e. a positive DNAemia 8 weeks after the initiation of anti-CMV treatment) was more frequent in the preemptive group (31% vs. 3% in the prophylactic group; p = 0.001). Similarly, anti-CMV drug resistance (UL97 or UL54 mutations) was also more frequent in the preemptive group (16% vs. 3% in the prophylactic group; p = 0.05). Antiviral treatment failures were associated with anti-CMV drug resistance (p = 0.0001). Patients with a CMV load over 5.25 log(10) copies/mL displayed the highest risk of developing anti-CMV drug resistance (OR = 16.91, p = 0.0008). Finally, the 1-year estimated glomerular filtration rate was reduced in patients with anti-CMV drug resistance (p = 0.02). In summary, preemptive therapy in D+R- KTR with high CMV loads and antiviral treatment failure was associated with a high incidence of anti-CMV drug resistance.
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Affiliation(s)
- L Couzi
- Centre Hospitalier Universitaire de Bordeaux, Hôpital Pellegrin, 33076 Bordeaux, France.
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Clinical utility of molecular surveillance for cytomegalovirus after antiviral prophylaxis in high-risk solid organ transplant recipients. Transplantation 2011; 92:1063-8. [PMID: 21878838 DOI: 10.1097/tp.0b013e31822fa4b7] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cytomegalovirus (CMV) disease after discontinuation of prophylaxis is a significant problem for CMV-seronegative recipients of CMV-seropositive organs (donor seropositive and recipient seronegative [D+/R-]). Virologic monitoring after prophylaxis has been proposed as a way to prevent late-onset disease. METHODS We reviewed the efficacy of this strategy. CMV D+/R- organ transplant recipients received 3 to 6 months of antiviral prophylaxis, and then viral loads were performed weekly for 8 weeks. Preemptive antiviral therapy was initiated at a predefined threshold. RESULTS Seventy-one CMV D+/R- patients were assessed. Symptomatic CMV disease occurred in 29 of 71 (40.8%) patients during the first-year posttransplant. A significant portion of disease occurred only after the 8-week surveillance period (n=16). Viremia occurred in 19 of 71 (26.8%) patients during the 8-week surveillance. Preemptive therapy was successfully used in only 3 of 19 (15.8%) viremic patients with no further disease development. The remaining patients cleared low-level viremia spontaneously (n=3) or had CMV disease (n=13) either at the first detection of viremia or before preemptive therapy initiation because of rapid viral load doubling (median doubling time 1.1 days). CONCLUSION CMV D+/R- patients had significant incidence of late-onset disease after prophylaxis. However, the use of a preemptive after prophylaxis strategy was of limited benefit in this group because of rapid viral doubling times and disease occurring after the surveillance period.
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Cordero Matía E, Len Ó. Esquemas de prevención de la infección por citomegalovirus: terapia anticipada frente a profilaxis universal. Enferm Infecc Microbiol Clin 2011; 29 Suppl 6:33-7. [DOI: 10.1016/s0213-005x(11)70055-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Finlen Copeland CA, Davis WA, Snyder LD, Banks M, Avery R, Davis RD, Palmer SM. Long-term efficacy and safety of 12 months of valganciclovir prophylaxis compared with 3 months after lung transplantation: A single-center, long-term follow-up analysis from a randomized, controlled cytomegalovirus prevention trial. J Heart Lung Transplant 2011; 30:990-6. [DOI: 10.1016/j.healun.2011.02.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 02/03/2011] [Accepted: 02/20/2011] [Indexed: 10/18/2022] Open
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La Rosa C, Limaye AP, Krishnan A, Blumstein G, Longmate J, Diamond DJ. Primary response against cytomegalovirus during antiviral prophylaxis with valganciclovir, in solid organ transplant recipients. Transpl Int 2011; 24:920-31. [PMID: 21672050 DOI: 10.1111/j.1432-2277.2011.01285.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Antiviral prophylaxis has proved successful for prevention of cytomegalovirus (CMV) disease in solid organ transplant (SOT) patients; though emerging data suggest that antiviral agents interfere with immunity, and may inhibit immune priming. In this context, we investigated levels and phenotype of primary CMV-specific immune responses that developed during antiviral prophylaxis in a cohort of CMV seronegative recipients (R(-) ) of a SOT from a seropositive donor (D(+) ). We longitudinally monitored CMV viral load, antibodies and levels of the negative immuno-modulator IL-10. PBMC were stimulated with CMV-specific peptide libraries to measure CD137 activation marker on CMV-specific T-cells and levels of PD-1 receptor, which is over expressed on exhausted T-cells. Unexpectedly, the majority (13/18) of D(+) R(-) patients who developed a primary CMV response showed early post-transplant CMV-specific responses, though levels of PD-1 on CMV-specific T-cells remained elevated throughout prophylaxis. A strong inverse association was found between levels of plasma IL-10 and CMV-specific cellular immune responses. Our study suggests that during prophylaxis, subclinical CMV infection might have occurred in the D(+) R(-) patients, and primary CMV-specific responses were detected early post-transplant when levels of plasma IL-10 were low. Extended prophylaxis or antiviral treatment did not appear to suppress CMV-specific antibodies or T-cells, which, however, showed exhaustion phenotypes.
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Affiliation(s)
- Corinna La Rosa
- Division of Translational Vaccine Research, Beckman Research Institute of the City of Hope, City of Hope Comprehensive Cancer Center, 1500 E. Duarte Road, Duarte, CA 91010, USA.
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Abstract
Lung transplantation is an effective treatment option for select patients with a variety of end-stage lung diseases. Although transplant can significantly improve the quality of life and prolong survival, a myriad of pulmonary complications may result in significant morbidity and limit long-term survival. The recognition and early treatment of these complications is important for optimizing outcomes. This article provides an overview and update of the pulmonary complications that may be commonly encountered by pulmonologists caring for these patients.
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Affiliation(s)
- Shahzad Ahmad
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA
| | - Oksana A Shlobin
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA
| | - Steven D Nathan
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA.
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Chou S. Phenotypic diversity of cytomegalovirus DNA polymerase gene variants observed after antiviral therapy. J Clin Virol 2011; 50:287-91. [PMID: 21295516 DOI: 10.1016/j.jcv.2011.01.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 12/20/2010] [Accepted: 01/06/2011] [Indexed: 01/01/2023]
Abstract
BACKGROUND Cytomegalovirus UL54 DNA polymerase mutations observed in clinical specimens are of diagnostic significance if confirmed to affect antiviral drug susceptibility. OBJECTIVES Validate an updated recombinant phenotyping method to determine the degree of drug resistance conferred by previously uncharacterized UL54 sequence variants, in comparison with known resistance-related mutations. STUDY DESIGN Bacterial artificial chromosome clones of viral DNA were mutagenized by recombination, transfected to produce live virus and phenotyped by standardized reporter-based yield reduction assays. RESULTS Sixteen recombinant viruses were constructed, representing baseline sequences, known resistance-related mutations and amino acid changes of unproven significance from clinical specimens. Phenotypes of baseline strains and known mutants were comparable to results from prior methods and helped to resolve some published inconsistencies. Mutations F412L, F412S, L545W were newly confirmed to confer ganciclovir and cidofovir resistance, while Q578H conferred ganciclovir and foscarnet resistance with borderline cidofovir resistance. Some foscarnet-resistant mutants were appreciably growth-retarded. CONCLUSIONS Results add to known exonuclease domain mutations that confer ganciclovir-cidofovir cross-resistance, polymerase domain mutations that confer foscarnet resistance with variably decreased ganciclovir/cidofovir susceptibility, and increase the list of sequence variants with no measurable impact on drug susceptibility. The phenotypic diversity of similar UL54 genotypic variants complicates the interpretation of genotypic resistance testing. Technical improvements are facilitating the phenotyping of remaining unknown sequence variants.
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Affiliation(s)
- Sunwen Chou
- Division of Infectious Diseases, Oregon Health and Science University and Department of Veterans Affairs Medical Center, Portland, OR 97239, USA.
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Abstract
The study of human cytomegalovirus (HCMV) antiviral drug resistance has enhanced knowledge of the virological targets and the mechanisms of antiviral activity. The currently approved drugs, ganciclovir (GCV), foscarnet (FOS), and cidofovir (CDV), target the viral DNA polymerase. GCV anabolism also requires phosphorylation by the virus-encoded UL97 kinase. GCV resistance mutations have been identified in both genes, while FOS and CDV mutations occur only in the DNA polymerase gene. Confirmation of resistance mutations requires phenotypic analysis; however, phenotypic assays are too time-consuming for diagnostic purposes. Genotypic assays based on sequencing provide more rapid results but are dependent on prior validation by phenotypic methods. Reports from many laboratories have produced an evolving list of confirmed resistance mutations, although differences in interpretation have led to some confusion. Recombinant phenotyping methods performed in a few research laboratories have resolved some of the conflicting results. Treatment options for drug-resistant HCMV infections are complex and have not been subjected to controlled clinical trials, although consensus guidelines have been proposed. This review summarizes the virological and clinical data pertaining to HCMV antiviral drug resistance.
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Kalil AC, Mindru C, Florescu DF. Effectiveness of valganciclovir 900 mg versus 450 mg for cytomegalovirus prophylaxis in transplantation: direct and indirect treatment comparison meta-analysis. Clin Infect Dis 2010; 52:313-21. [PMID: 21189424 DOI: 10.1093/cid/ciq143] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND valganciclovir (VGC) 900 mg is approved for CMV prophylaxis, but it has been associated with 10%-40% leucopenia rate. We hypothesize that VGC 450 mg daily may be as effective as and safer than 900 mg daily. METHODS studies evaluating valganciclovir 900 mg and 450 mg daily against controls were evaluated. Direct comparisons were performed by random-effects models and indirect comparisons by the Bucher method. RESULTS twelve trials with VGC 900 mg (1543 patients) and 8 trials with VGC 450 mg (1531 patients) were included. The risk of CMV disease with VGC 900 mg versus controls was 1.06 (95% confidence interval [CI], .64-1.76; P = .81; I2=29%) and with VGC 450 mg vs controls .77 (95%CI, .49-1.18; P = .23; I2=24%). The risk of leucopenia was 5.24 (2.09-13.15; P = .0004; I2=44%) for VGC 900 mg versus controls and 1.58 (.96-2.61; P = .07; I2=36%) for VGC 450 mg versus controls; the risk for acute allograft rejection was 1.71 (.45, -6.50; P = .43) for VGC 900 mg and .80 (.50-1.28; P = .34) for VGC 450 mg. Adjusted indirect comparison between VGC 900 mg and VGC 450mg: the risk for CMV disease was not significantly different: odds ratio (OR), 1.38 (.84-2.25); P = .19; the risk of leucopenia was significantly increased with VGC 900 mg: 3.32 (1.76-6.26); P = .0002; and the risk of rejection was significantly increased with VGC 900 mg: 2.56 (1.50-4.53); P = .0005. Results remained consistent after adjustments by allograft, CMV control strategy, and immunosuppression. CONCLUSIONS valganciclovir 900 mg showed no superiority efficacy compared to controls (ganciclovir or preemptive) and equivalent efficacy to VGC 450 mg (statistical power: 94% and 97%, respectively) for CMV universal prophylaxis.VGC 900 mg was significantly associated with 3 times increase in the risk of leucopenia and 2 times increase in the risk of rejection compared with VGC 450 mg.
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Affiliation(s)
- Andre C Kalil
- Infectious Diseases Division, University of Nebraska Medical Center, Omaha, Nebraska 68198-5400, USA.
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Razonable RR. Strategies for managing cytomegalovirus in transplant recipients. Expert Opin Pharmacother 2010; 11:1983-97. [PMID: 20642369 DOI: 10.1517/14656566.2010.492395] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
IMPORTANCE OF THE FIELD Cytomegalovirus (CMV) is the most important pathogen that affects transplant recipients, by directly causing clinical disease and by indirectly reducing patient and allograft survival. AREAS COVERED IN THIS REVIEW This review provides a brief overview of the direct and indirect effects of CMV disease and the traditional and newly described factors that increase the risk of disease after transplantation. Newly acquired data in the diagnostics, prevention and treatment of CMV infection are discussed, with emphasis on guidelines for management as recently endorsed by the American Society of Transplantation and the Transplantation Society. WHAT THE READER WILL GAIN The reader will gain up-to-date insights into the contemporary management of CMV after solid organ transplantation. Practical aspects of its diagnosis, prevention and treatment are discussed. Emerging concerns of late-onset CMV disease and antiviral resistance are also highlighted to emphasize the need to optimize CMV-prevention strategies. TAKE HOME MESSAGE Prevention of CMV disease is an important goal in the management of solid organ transplant recipients. The efficacy of CMV prevention should be measured not only by the significant reduction in CMV incidence but, as importantly, by the improvement in long-term allograft and patient survival.
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Affiliation(s)
- Raymund R Razonable
- William J von Liebig Transplant Center, College of Medicine, Mayo Clinic, Division of Infectious Diseases, Department of Internal Medicine, Rochester, MN 55905, USA.
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40
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Mitsani D, Nguyen MH, Kwak EJ, Silveira FP, Vadnerkar A, Pilewski J, Crespo M, Toyoda Y, Bermudez C, Clancy CJ. Cytomegalovirus disease among donor-positive/recipient-negative lung transplant recipients in the era of valganciclovir prophylaxis. J Heart Lung Transplant 2010; 29:1014-20. [DOI: 10.1016/j.healun.2010.04.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 04/24/2010] [Accepted: 04/29/2010] [Indexed: 11/27/2022] Open
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41
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Eid AJ, Razonable RR. New developments in the management of cytomegalovirus infection after solid organ transplantation. Drugs 2010; 70:965-81. [PMID: 20481654 DOI: 10.2165/10898540-000000000-00000] [Citation(s) in RCA: 149] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Despite remarkable advances in the diagnostic and therapeutic modalities for its management, cytomegalovirus (CMV) remains one of the most important pathogens impacting on the outcome of transplantation. Not only does CMV directly cause morbidity and occasional mortality, it also influences many short-term and long-term indirect effects that collectively contribute to reduced allograft and patient survival. Prevention of CMV infection and disease is therefore key in ensuring the successful outcome of solid organ transplantation (SOT). In this regard, antiviral prophylaxis and pre-emptive therapy are similarly effective in preventing CMV disease after transplantation. However, current guidelines prefer antiviral prophylaxis over pre-emptive therapy in preventing CMV disease in high-risk SOT recipients, such as CMV-seronegative recipients of organs from CMV-seropositive donors (CMV D+/R-), and lung, intestinal and pancreas transplant recipients. Antiviral prophylaxis has the benefits of reducing not only the incidence of CMV disease, but also the indirect effects of CMV on allograft and patient survival. The major drawback of antiviral prophylaxis is delayed-onset CMV disease, which occurs in 15-38% of CMV D+/R- SOT recipients who received 3 months of prophylaxis. Allograft rejection, over-immunosuppression and lack of CMV-specific immunity are factors that predispose patients to delayed-onset CMV disease. A recent randomized trial in CMV D+/R- kidney recipients demonstrates a significant reduction in the incidence of CMV disease when valganciclovir prophylaxis is extended to 200 days (compared with the standard 100 days) after transplantation; however, the safety and cost of this prolonged approach has yet to be assessed. In some studies, delayed-onset CMV disease has been significantly associated with allograft loss and mortality. In the vast majority of patients, CMV disease responds to treatment with intravenous ganciclovir. Recently, oral valganciclovir was demonstrated to have an efficacy that is comparable to intravenous ganciclovir in treating mild to moderate cases of CMV disease in SOT recipients. Reduction in the degree of immunosuppression should complement antiviral treatment of CMV disease. Although it remains rare, ganciclovir-resistant CMV disease is increasingly seen in clinical practice, potentially fostered by the prolonged use of antivirals in high-risk over-immunosuppressed transplant recipients. Treatment of drug-resistant CMV is currently non-standardized and may include foscarnet, cidofovir, CMV hyperimmune globulins or leflunomide. The investigational drug marivabir had the potential to treat ganciclovir-resistant CMV disease as it acts through a different mechanism. However, the recent phase III clinical trial in allogeneic bone marrow transplant recipients showed that maribavir was not significantly better than placebo for the prevention of CMV disease. Similarly, the preliminary data in a liver transplant population suggests that maribavir was inferior to oral ganciclovir for the prevention of CMV disease. This article reviews the recent data and other developments in the management of CMV infection after SOT.
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Affiliation(s)
- Albert J Eid
- Division of Infectious Diseases, University of Kansas Medical Center, Kansas City, Kansas, USA
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Recombinant phenotyping of cytomegalovirus UL97 kinase sequence variants for ganciclovir resistance. Antimicrob Agents Chemother 2010; 54:2371-8. [PMID: 20385869 DOI: 10.1128/aac.00186-10] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A strain of human cytomegalovirus, T2211, modified from standard laboratory strain AD169 to contain a secreted alkaline phosphatase reporter gene for rapid viral quantitation, was cloned as a bacterial artificial chromosome, BA1, and then mutagenized to create recombinant viruses containing viral UL97 kinase sequence variants found in clinical specimens after ganciclovir treatment, but with no phenotypic data to determine their role in drug resistance. Seven control strains and 14 other recombinant strains were phenotyped for ganciclovir resistance and compared with similar strains created using prior technology to show a good concordance of findings. Sequence changes V466M, H469Y, A478V, N510S, A588V, K599R, L600I, G623S, T659I, and V665I were found to confer no significant ganciclovir resistance, while mutations L405P, M460T, A594E, and C603R conferred 3- to 9-fold increases in ganciclovir 50% inhibitory concentrations. Different mutations at codons 594 (A594V, A594E) and 603 (C603W, C603S) conferred varied amounts of ganciclovir resistance. Advances in recombinant phenotyping make it easier to show that many uncharacterized UL97 sequence variants do not confer ganciclovir resistance, but some are newly confirmed as resistance associated, including one (L405P) which is outside the codon range where such mutations are usually found. This information should improve the interpretation of genotypic data generated by diagnostic laboratories.
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Bugano D, Campos S, Afonso J, Caramori M, Teixeira R, Carraro R, Strabelli T, Machado C, Samano M, Pêgo-Fernandes P, Jatene F. Impact of Cytomegalovirus Infection in Lung Transplant Patients Under Universal Prophylaxis: Single-Center Experience in Brazil. Transplant Proc 2010; 42:525-30. [DOI: 10.1016/j.transproceed.2010.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Snyder LD, Finlen-Copeland CA, Turbyfill WJ, Howell D, Willner DA, Palmer SM. Cytomegalovirus pneumonitis is a risk for bronchiolitis obliterans syndrome in lung transplantation. Am J Respir Crit Care Med 2010; 181:1391-6. [PMID: 20167845 DOI: 10.1164/rccm.200911-1786oc] [Citation(s) in RCA: 117] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Cytomegalovirus pneumonitis is one of the most prevalent opportunistic infections after lung transplantation. Early studies reported that cytomegalovirus pneumonitis was a risk factor for chronic allograft dysfunction. More recently, in the era of routine prophylaxis and ganciclovir treatment, the adverse impact of treated cytomegalovirus pneumonitis on bronchiolitis obliterans syndrome has been challenged. OBJECTIVES We hypothesized that cytomegalovirus pneumonitis contributes to adverse outcomes in the current antiviral era. We sought to define the impact of treated cytomegalovirus pneumonitis on bronchiolitis obliterans syndrome and survival in a large single-center cohort (n = 231) of consecutive patients undergoing lung transplantation from 2000 to 2004, all receiving short-course ganciclovir prophylaxis. METHODS Transbronchial biopsies were performed at defined intervals with prospective cytomegalovirus immunostaining on every biopsy (n = 1,887). Cox proportional hazards models were used to assess the relationship between treated cytomegalovirus pneumonitis and clinical outcomes. MEASUREMENTS AND MAIN RESULTS Forty-nine (21%) recipients developed cytomegalovirus pneumonitis a median of 106 days after transplantation. Treated cytomegalovirus pneumonitis within the first 6 months after transplantation significantly increased the risk for bronchiolitis obliterans syndrome (P = 0.001; hazard ratio, 2.19; 95% confidence interval, 1.36-3.51) and post-transplantation death (P = 0.02; hazard ratio, 1.89; 95% confidence interval, 1.11-3.23). This risk persisted when cytomegalovirus pneumonitis was considered as a time-dependent predictor as well as in multivariable models controlling for other risk factors. CONCLUSIONS Cytomegalovirus pneumonitis affects more than 20% of lung transplant recipients. Despite treatment, it increases the risk for bronchiolitis obliterans syndrome and death. More effective preventive strategies for cytomegalovirus pneumonitis are needed to improve long-term outcomes after lung transplantation.
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Affiliation(s)
- Laurie D Snyder
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
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Lefeuvre S, Chevalier P, Charpentier C, Zekkour R, Havard L, Benammar M, Amrein C, Boussaud V, Lillo-Le Louët A, Guillemain R, Billaud E. Valganciclovir prophylaxis for cytomegalovirus infection in thoracic transplant patients: retrospective study of efficacy, safety, and drug exposure. Transpl Infect Dis 2010; 12:213-9. [DOI: 10.1111/j.1399-3062.2010.00491.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Johanssson I, Mårtensson G, Andersson R. Cytomegalovirus and long-term outcome after lung transplantation in Gothenburg, Sweden. ACTA ACUST UNITED AC 2010; 42:129-36. [DOI: 10.3109/00365540903341828] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Affiliation(s)
- A Humar
- Transplant Infectious Diseases, Department of Medicine, University of Alberta, Alberta, Canada.
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Arthurs SK, Eid AJ, Deziel PJ, Marshall WF, Cassivi SD, Walker RC, Razonable RR. The impact of invasive fungal diseases on survival after lung transplantation. Clin Transplant 2009; 24:341-348. [DOI: 10.1111/j.1399-0012.2009.01076.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Thomas LD, Milstone AP, Miller GG, Loyd JE, Stephen Dummer J. Long-term outcomes of cytomegalovirus infection and disease after lung or heart-lung transplantation with a delayed ganciclovir regimen. Clin Transplant 2009; 23:476-83. [DOI: 10.1111/j.1399-0012.2009.00990.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Boivin G, Goyette N, Rollag H, Jardine AG, Pescovitz MD, Asberg A, Ives J, Hartmann A, Humar A. Cytomegalovirus resistance in solid organ transplant recipients treated with intravenous ganciclovir or oral valganciclovir. Antivir Ther 2009. [DOI: 10.1177/135965350901400512] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background The rate of cytomegalovirus (CMV) mutations conferring ganciclovir resistance was assessed in a trial comparing intravenous ganciclovir and oral valganciclovir for treatment of CMV disease in solid organ transplant (SOT) recipients. Methods Viral genes ( UL97 and UL54) conferring ganciclovir resistance were amplified and sequenced from blood samples collected at days 0 (before therapy), 21 (end of induction) and 49 (end of maintenance). Results The overall risk of developing a confirmed or probable ganciclovir resistance mutation during treatment was similar for patients treated with ganciclovir (2.3%) and valganciclovir (3.6%; P=0.51). A persistent viral load at day 21 was associated with a significant risk of ganciclovir resistance by day 49 (odds ratio 11.83; P=0.022). In multivariate analyses, presence of a confirmed ganciclovir resistance mutation was independently associated with virological failure (viral load ≥600 copies/ml) at days 21 and 49. One-third (3/9) of patients with confirmed CMV resistance mutations had recurrent CMV disease. The plasma half-life of confirmed ganciclovir-resistant UL97 mutants was significantly longer than that of wild-type strains, polymorphic variants and strains with mutations of unknown significance ( P=0.045). Multiple UL54 mutations of unknown significance were found in clinical strains. Viral kinetic analysis of these latter strains revealed no effect (negative or positive) on in vivo viral fitness. Conclusions Treatment with oral valganciclovir or intravenous ganciclovir results in similar and low rates of resistance mutations in SOT recipients. Patients with drug-resistant CMV strains often have virological failure and might have unfavourable clinical outcomes.
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Affiliation(s)
- Guy Boivin
- Infectious Disease Research Center of the Centre hospitalier universitaire de Québec, Québec City, QC, Canada
- Laval University, Québec City, QC, Canada
| | - Nathalie Goyette
- Infectious Disease Research Center of the Centre hospitalier universitaire de Québec, Québec City, QC, Canada
| | - Halvor Rollag
- Institute of Microbiology, University of Oslo, Oslo, Norway
| | - Alan G Jardine
- Department of Medicine, University of Glasgow, Glasgow, UK
| | - Mark D Pescovitz
- Department of Surgery and Microbiology, Indiana University, Indianapolis, IN, USA
| | - Anders Asberg
- Department of Pharmaceutical Biosciences, School of Pharmacy, University of Oslo, Oslo, Norway
| | - Jane Ives
- Roche Products Ltd, Welwyn Garden City, UK
| | - Anders Hartmann
- Department of Medicine, Rikshospitalet-Radiumhospitalet Medical Centre, University of Oslo, Olso, Norway
| | - Atul Humar
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
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