1
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Schaenman J, Weigt SS, Pan M, Lee JJ, Zhou X, Elashoff D, Shino M, Reynolds JM, Budev M, Shah P, Singer LG, Todd JL, Snyder LD, Palmer S, Belperio J. Alterations in Circulating Measures of Th2 Immune Responses Pre-Lung Transplant Associates with Reduced Primary Graft Dysfunction. J Heart Lung Transplant 2024:S1053-2498(24)01744-3. [PMID: 39029637 DOI: 10.1016/j.healun.2024.07.011] [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: 02/26/2024] [Revised: 07/10/2024] [Accepted: 07/14/2024] [Indexed: 07/21/2024] Open
Abstract
Primary graft dysfunction (PGD) is a complication of lung transplantation that continues to cause significant morbidity. The Th2 immune response has been shown to counteract tissue-damaging inflammation. We hypothesized that Th2 cytokines/chemokines in blood would be associated with protection from PGD. Utilizing pre-transplant sera from the multicenter Clinical Trials in Organ Transplantation (CTOT-20) study, we evaluated Th2 cytokines/chemokines in 211 patients. Increased concentrations of Th2 cytokines were associated with freedom from PGD, namely IL-4 (Odds Ratio (OR) 0.66 (95% CI 0.45-0.99), p=0.043), IL-9 (OR 0.68 (95% CI 0.49-0.94), p=0.019), IL-13 (OR 0.73 (95% CI 0.55-0.96), p=0.023), and IL-6 (OR 0.74 (95% CI 0.56-0.98), p=0.036). Multivariable regression performed for each cytokine including clinically relevant covariables confirmed these associations and additionally demonstrated association with IL-5 (OR 0.57 (95% CI 0.36-0.89), p=0.014) and IL-10 (OR 0.55 (95% CI 0.32-0.96), p=0.035). Higher levels of Th2 immune response prior to lung translant appear to have a protective effect against PGD, which parallels the Th2 role in resolving inflammation and tissue injury. Pre-transplant cytokine assessments could be utilized for recipient risk stratification.
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Affiliation(s)
| | - S Sam Weigt
- Division of Pulmonary, Critical Care, and Sleep Medicine
| | - Mengtong Pan
- Department of Medicine Statistics Core, David Geffen School of Medicine at UCLA
| | - Joshua J Lee
- Department of Medicine Statistics Core, David Geffen School of Medicine at UCLA
| | - Xinkai Zhou
- Department of Medicine Statistics Core, David Geffen School of Medicine at UCLA
| | - David Elashoff
- Department of Medicine Statistics Core, David Geffen School of Medicine at UCLA
| | - Mike Shino
- Division of Pulmonary, Critical Care, and Sleep Medicine
| | - John M Reynolds
- Division of Pulmonary, Allergy, and Critical Care Medicine, Duke University School of Medicine
| | - Marie Budev
- Department of Pulmonary Medicine, Cleveland Clinic
| | - Pali Shah
- Division of Pulmonary Medicine, Johns Hopkins School of Medicine
| | - Lianne G Singer
- Division of Pulmonary, Allergy, and Critical Care Medicine, Duke University School of Medicine
| | - Jamie L Todd
- Division of Pulmonary, Allergy, and Critical Care Medicine, Duke University School of Medicine
| | - Laurie D Snyder
- Division of Pulmonary, Allergy, and Critical Care Medicine, Duke University School of Medicine
| | - Scott Palmer
- Division of Pulmonary, Allergy, and Critical Care Medicine, Duke University School of Medicine
| | - John Belperio
- Division of Pulmonary, Critical Care, and Sleep Medicine
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2
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Combs MP, Luth JE, Falkowski NR, Wheeler DS, Walker NM, Erb-Downward JR, Wakeam E, Sjoding MW, Dunlap DG, Admon AJ, Dickson RP, Lama VN. The Lung Microbiome Predicts Mortality and Response to Azithromycin in Lung Transplant Recipients with Chronic Rejection. Am J Respir Crit Care Med 2024; 209:1360-1375. [PMID: 38271553 PMCID: PMC11146567 DOI: 10.1164/rccm.202308-1326oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/24/2024] [Indexed: 01/27/2024] Open
Abstract
Rationale: Chronic lung allograft dysfunction (CLAD) is the leading cause of death after lung transplant, and azithromycin has variable efficacy in CLAD. The lung microbiome is a risk factor for developing CLAD, but the relationship between lung dysbiosis, pulmonary inflammation, and allograft dysfunction remains poorly understood. Whether lung microbiota predict outcomes or modify treatment response after CLAD is unknown. Objectives: To determine whether lung microbiota predict post-CLAD outcomes and clinical response to azithromycin. Methods: Retrospective cohort study using acellular BAL fluid prospectively collected from recipients of lung transplant within 90 days of CLAD onset. Lung microbiota were characterized using 16S rRNA gene sequencing and droplet digital PCR. In two additional cohorts, causal relationships of dysbiosis and inflammation were evaluated by comparing lung microbiota with CLAD-associated cytokines and measuring ex vivo P. aeruginosa growth in sterilized BAL fluid. Measurements and Main Results: Patients with higher bacterial burden had shorter post-CLAD survival, independent of CLAD phenotype, azithromycin treatment, and relevant covariates. Azithromycin treatment improved survival in patients with high bacterial burden but had negligible impact on patients with low or moderate burden. Lung bacterial burden was positively associated with CLAD-associated cytokines, and ex vivo growth of P. aeruginosa was augmented in BAL fluid from transplant recipients with CLAD. Conclusions: In recipients of lung transplants with chronic rejection, increased lung bacterial burden is an independent risk factor for mortality and predicts clinical response to azithromycin. Lung bacterial dysbiosis is associated with alveolar inflammation and may be promoted by underlying lung allograft dysfunction.
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Affiliation(s)
| | | | | | | | | | | | - Elliot Wakeam
- Division of Thoracic Surgery, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Michael W. Sjoding
- Division of Pulmonary and Critical Care and
- Weil Institute for Critical Care Research and Innovation, Ann Arbor, Michigan
| | - Daniel G. Dunlap
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Andrew J. Admon
- Division of Pulmonary and Critical Care and
- Weil Institute for Critical Care Research and Innovation, Ann Arbor, Michigan
| | - Robert P. Dickson
- Division of Pulmonary and Critical Care and
- Weil Institute for Critical Care Research and Innovation, Ann Arbor, Michigan
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan; and
| | - Vibha N. Lama
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia
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3
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Weigt SS, Kim GHJ, Jones HD, Ramsey AL, Amubieya O, Abtin F, Pourzand L, Lee J, Shino MY, DerHovanessian A, Stripp B, Noble PW, Sayah DM, Saggar R, Britton I, Lynch JP, Belperio JA, Goldin J. Quantitative Image Analysis at Chronic Lung Allograft Dysfunction Onset Predicts Mortality. Transplantation 2022; 106:1253-1261. [PMID: 34534193 PMCID: PMC8924012 DOI: 10.1097/tp.0000000000003950] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/28/2021] [Accepted: 08/17/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Chronic lung allograft dysfunction (CLAD) phenotype determines prognosis and may have therapeutic implications. Despite the clarity achieved by recent consensus statement definitions, their reliance on radiologic interpretation introduces subjectivity. The Center for Computer Vision and Imaging Biomarkers at the University of California, Los Angeles (UCLA) has established protocols for chest high-resolution computed tomography (HRCT)-based computer-aided quantification of both interstitial disease and air-trapping. We applied quantitative image analysis (QIA) at CLAD onset to demonstrate radiographic phenotypes with clinical implications. METHODS We studied 47 first bilateral lung transplant recipients at UCLA with chest HRCT performed within 90 d of CLAD onset and 47 no-CLAD control HRCTs. QIA determined the proportion of lung volume affected by interstitial disease and air-trapping in total lung capacity and residual volume images, respectively. We compared QIA scores between no-CLAD and CLAD, and between phenotypes. We also assigned radiographic phenotypes based solely on QIA, and compared their survival outcomes. RESULTS CLAD onset HRCTs had more lung affected by the interstitial disease (P = 0.003) than no-CLAD controls. Bronchiolitis obliterans syndrome (BOS) cases had lower scores for interstitial disease as compared with probable restrictive allograft syndrome (RAS) (P < 0.0001) and mixed CLAD (P = 0.02) phenotypes. BOS cases had more air-trapping than probable RAS (P < 0.0001). Among phenotypes assigned by QIA, the relative risk of death was greatest for mixed (relative risk [RR] 11.81), followed by RAS (RR 6.27) and BOS (RR 3.15). CONCLUSIONS Chest HRCT QIA at CLAD onset appears promising as a method for precise determination of CLAD phenotypes with survival implications.
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Affiliation(s)
- S Samuel Weigt
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Grace-Hyun J Kim
- Department of Radiology, University of California Los Angeles, Los Angeles, CA
| | - Heather D Jones
- Department of Medicine, Cedars Sinai Medical Center, Los Angeles, CA
| | - Allison L Ramsey
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Olawale Amubieya
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Fereidoun Abtin
- Department of Radiology, University of California Los Angeles, Los Angeles, CA
| | - Lila Pourzand
- Department of Radiology, University of California Los Angeles, Los Angeles, CA
| | - Jihey Lee
- Department of Radiology, University of California Los Angeles, Los Angeles, CA
| | - Michael Y Shino
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | | | - Barry Stripp
- Department of Medicine, Cedars Sinai Medical Center, Los Angeles, CA
| | - Paul W Noble
- Department of Medicine, Cedars Sinai Medical Center, Los Angeles, CA
| | - David M Sayah
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Rajan Saggar
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Ian Britton
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Joseph P Lynch
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - John A Belperio
- Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Jonathan Goldin
- Department of Radiology, University of California Los Angeles, Los Angeles, CA
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4
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Murakami N, Baggett ND, Schwarze ML, Ladin K, Courtwright AM, Goldberg HJ, Nolley EP, Jain N, Landzberg M, Wentlandt K, Lai JC, Shinall MC, Ufere NN, Jones CA, Lakin JR. Top Ten Tips Palliative Care Clinicians Should Know About Solid Organ Transplantation. J Palliat Med 2022; 25:1136-1142. [PMID: 35275707 PMCID: PMC9467633 DOI: 10.1089/jpm.2022.0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Solid organ transplantation (SOT) is a life-saving procedure for people with end-stage organ failure. However, patients experience significant symptom burden, complex decision making, morbidity, and mortality during both pre- and post-transplant periods. Palliative care (PC) is well suited and historically underdelivered for the transplant population. This article, written by a team of transplant specialists (surgeons, cardiologists, nephrologists, hepatologists, and pulmonologists), PC clinicians, and an ethics specialist, shares 10 high-yield tips for PC clinicians to consider when caring for SOT patients.
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Affiliation(s)
- Naoka Murakami
- Division of Renal Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Nathan D Baggett
- Division of Emergency Medicine, Health Partners Institute/Regions Hospital, St. Paul, Minnesota, USA
| | | | - Keren Ladin
- Department of Occupational Therapy, Tufts University, Medford, Massachusetts, USA.,Department of Community Health, Tufts University, Medford, Massachusetts, USA
| | - Andrew M Courtwright
- Department of Pulmonary and Critical Care Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hilary J Goldberg
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Eric P Nolley
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Nelia Jain
- Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Michael Landzberg
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA.,Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Kirsten Wentlandt
- Division of Palliative Care, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Jennifer C Lai
- Department of Medicine, University of California, San Francisco, California, USA
| | - Myrick C Shinall
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.,Section of Palliative Care, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Nneka N Ufere
- Liver Center, Gastrointestinal Division, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Christopher A Jones
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Joshua R Lakin
- Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
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5
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Foroutan F, Malik A, Clark KE, Buchan TA, Yang H, Cheong GHL, Pezzutti O, Kim I, Gupta R, Tan C, Samman A, Friesen EL, Akhtar A, Rigobon A, Stein M, Nunez JJY, Sidhu A, Heels-Ansdell D, Guyatt G, Meade MO. Predictors of 1-year Mortality after Adult Lung Transplantation: Systematic Review and Meta-analyses. J Heart Lung Transplant 2022; 41:937-951. [DOI: 10.1016/j.healun.2022.03.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 03/07/2022] [Accepted: 03/24/2022] [Indexed: 10/18/2022] Open
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6
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Phenotyping CLAD After Single lung transplant: limits and prognostic assessment of the 2019 ISHLT classification system. J Heart Lung Transplant 2022; 41:599-607. [DOI: 10.1016/j.healun.2022.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 11/19/2022] Open
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7
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Sun H, Deng M, Chen W, Liu M, Dai H, Wang C. Graft dysfunction and rejection of lung transplant, a review on diagnosis and management. THE CLINICAL RESPIRATORY JOURNAL 2022; 16:5-12. [PMID: 35080130 PMCID: PMC9060084 DOI: 10.1111/crj.13471] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 12/22/2021] [Indexed: 01/01/2023]
Abstract
Introduction Lung transplantation has proven to be an effective treatment option for end‐stage lung disease. However, early and late complications following transplantation remain significant causes of high mortality. Objectives In this review, we focus on the time of onset in primary graft dysfunction and rejection complications, as well as emphasize the role of imaging manifestations and pathological features in early diagnosis, thus assisting clinicians in the early detection and treatment of posttransplant complications and improving patient quality of life and survival. Data source We searched electronic databases such as PubMed, Web of Science, and EMBASE. We used the following search terms: lung transplantation complications, primary graft dysfunction, acute rejection, chronic lung allograft dysfunction, radiological findings, and diagnosis and treatment. Conclusion Primary graft dysfunction, surgical complications, immune rejection, infections, and neoplasms represent major posttransplant complications. As the main posttransplant survival limitation, chronic lung allograft dysfunction has a characteristic imaging presentation; nevertheless, the clinical and imaging manifestations are often complex and overlap, so it is essential to understand the temporal evolution of these complications to narrow the differential diagnosis for early treatment to improve prognosis. Early and late complications after lung transplantation remain essential causes of high mortality. In this review, we focus on the timing of the onset of primary graft dysfunction and rejection complications and highlight the role of imaging manifestations and clinicopathologic features in early diagnosis, thus assisting clinicians in the early detection and treatment of posttransplant complications and improving patient quality of life and survival.
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Affiliation(s)
- Haishuang Sun
- Department of Respiratory Medicine, The First Hospital of Jilin University, Jilin University, Changchun, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital; National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; National Clinical Research Center for Respiratory Diseases, Beijing, China.,Chinese Academy of Medical Sciences, Graduate School of Peking Union Medical College, Beijing, China
| | - Mei Deng
- Chinese Academy of Medical Sciences, Graduate School of Peking Union Medical College, Beijing, China.,Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Wenhui Chen
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital; National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; National Clinical Research Center for Respiratory Diseases, Beijing, China.,Chinese Academy of Medical Sciences, Graduate School of Peking Union Medical College, Beijing, China
| | - Min Liu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Huaping Dai
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital; National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; National Clinical Research Center for Respiratory Diseases, Beijing, China.,Chinese Academy of Medical Sciences, Graduate School of Peking Union Medical College, Beijing, China
| | - Chen Wang
- Department of Respiratory Medicine, The First Hospital of Jilin University, Jilin University, Changchun, China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital; National Center for Respiratory Medicine; Institute of Respiratory Medicine, Chinese Academy of Medical Sciences; National Clinical Research Center for Respiratory Diseases, Beijing, China.,Chinese Academy of Medical Sciences, Graduate School of Peking Union Medical College, Beijing, China
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8
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Amubieya O, Ramsey A, DerHovanessian A, Fishbein GA, Lynch JP, Belperio JA, Weigt SS. Chronic Lung Allograft Dysfunction: Evolving Concepts and Therapies. Semin Respir Crit Care Med 2021; 42:392-410. [PMID: 34030202 DOI: 10.1055/s-0041-1729175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The primary factor that limits long-term survival after lung transplantation is chronic lung allograft dysfunction (CLAD). CLAD also impairs quality of life and increases the costs of medical care. Our understanding of CLAD continues to evolve. Consensus definitions of CLAD and the major CLAD phenotypes were recently updated and clarified, but it remains to be seen whether the current definitions will lead to advances in management or impact care. Understanding the potential differences in pathogenesis for each CLAD phenotype may lead to novel therapeutic strategies, including precision medicine. Recognition of CLAD risk factors may lead to earlier interventions to mitigate risk, or to avoid risk factors all together, to prevent the development of CLAD. Unfortunately, currently available therapies for CLAD are usually not effective. However, novel therapeutics aimed at both prevention and treatment are currently under investigation. We provide an overview of the updates to CLAD-related terminology, clinical phenotypes and their diagnosis, natural history, pathogenesis, and potential strategies to treat and prevent CLAD.
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Affiliation(s)
- Olawale Amubieya
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Allison Ramsey
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Ariss DerHovanessian
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Gregory A Fishbein
- Department of Pathology, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Joseph P Lynch
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - John A Belperio
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - S Samuel Weigt
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
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9
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Klouda T, Vargas SO, Midyat L. Restrictive allograft syndrome after lung transplantation. Pediatr Transplant 2021; 25:e14000. [PMID: 33728767 DOI: 10.1111/petr.14000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 02/07/2021] [Accepted: 02/22/2021] [Indexed: 11/29/2022]
Abstract
Despite recent advances over the past decade in lung transplantation including improved surgical technique and immunotherapy, the diagnosis and treatment of chronic lung allograft dysfunction remains a significant barrier to recipient survival. Aside from bronchiolitis obliterans syndrome, a restrictive phenotype called restrictive allograft syndrome has recently been recognized and affects up to 35% of all patients with CLAD. The main characteristics of RAS include a persistent and unexplained decline in lung function compared to baseline and persistent parenchymal infiltrates on imaging. The median survival after diagnosis of RAS is 6 to 18 months, significantly shorter than other forms of CLAD. Treatment options are limited, as therapies used for BOS are typically ineffective at halting disease progression. Specific medications such as fibrinolytics are lacking large, multicenter prospective studies. In this manuscript, we discuss the definition, mechanism, and characteristics of RAS while highlighting the similarities and differences between other forms of CLAD. We also review the diagnoses along with current and potential treatment options that are available for patients. Finally, we discuss the existing knowledge gaps and areas for future research to improve patient outcomes and understanding of RAS.
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Affiliation(s)
- Timothy Klouda
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sara O Vargas
- Department of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Levent Midyat
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
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10
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Brun AL, Chabi ML, Picard C, Mellot F, Grenier PA. Lung Transplantation: CT Assessment of Chronic Lung Allograft Dysfunction (CLAD). Diagnostics (Basel) 2021; 11:diagnostics11050817. [PMID: 33946544 PMCID: PMC8147203 DOI: 10.3390/diagnostics11050817] [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: 04/06/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 01/05/2023] Open
Abstract
Chronic lung allograft rejection remains one of the major causes of morbi-mortality after lung transplantation. The term Chronic Lung Allograft Dysfunction (CLAD) has been proposed to describe the different processes that lead to a significant and persistent deterioration in lung function without identifiable causes. The two main phenotypes of CLAD are Bronchiolitis Obliterans Syndrome (BOS) and Restrictive Allograft Syndrome (RAS), each of them characterized by particular functional and imaging features. These entities can be associated (mixed phenotype) or switched from one to the other. If CLAD remains a clinical diagnosis based on spirometry, computed tomography (CT) scan plays an important role in the diagnosis and follow-up of CLAD patients, to exclude identifiable causes of functional decline when CLAD is first suspected, to detect early abnormalities that can precede the diagnosis of CLAD (particularly RAS), to differentiate between the obstructive and restrictive phenotypes, and to detect exacerbations and evolution from one phenotype to the other. Recognition of early signs of rejection is crucial for better understanding of physiopathologic pathways and optimal management of patients.
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Affiliation(s)
- Anne-Laure Brun
- Radiology Department, Hôpital Foch, 92150 Suresnes, France; (M.-L.C.); (F.M.)
- Correspondence: (A.-L.B.); (P.A.G.)
| | - Marie-Laure Chabi
- Radiology Department, Hôpital Foch, 92150 Suresnes, France; (M.-L.C.); (F.M.)
| | - Clément Picard
- Respiratory Department, Hôpital Foch, 92150 Suresnes, France;
| | - François Mellot
- Radiology Department, Hôpital Foch, 92150 Suresnes, France; (M.-L.C.); (F.M.)
| | - Philippe A. Grenier
- Department of Clinical Research and Innovation, Hôpital Foch, 92150 Suresnes, France
- Correspondence: (A.-L.B.); (P.A.G.)
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11
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Hoang-Thi TN, Chassagnon G, Hua-Huy T, Boussaud V, Dinh-Xuan AT, Revel MP. Chronic Lung Allograft Dysfunction Post Lung Transplantation: A Review of Computed Tomography Quantitative Methods for Detection and Follow-Up. J Clin Med 2021; 10:jcm10081608. [PMID: 33920108 PMCID: PMC8069908 DOI: 10.3390/jcm10081608] [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: 03/06/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 12/27/2022] Open
Abstract
Chronic lung allograft dysfunction (CLAD) remains the leading cause of morbidity and mortality after lung transplantation. The term encompasses both obstructive and restrictive phenotypes, as well as mixed and undefined phenotypes. Imaging, in addition to pulmonary function tests, plays a major role in identifying the CLAD phenotype and is essential for follow-up after lung transplantation. Quantitative imaging allows for the performing of reader-independent precise evaluation of CT examinations. In this review article, we will discuss the role of quantitative imaging methods for evaluating the airways and the lung parenchyma on computed tomography (CT) images, for an early identification of CLAD and for prognostic estimation. We will also discuss their limits and the need for novel approaches to predict, understand, and identify CLAD in its early stages.
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Affiliation(s)
- Trieu-Nghi Hoang-Thi
- AP-HP.Centre, Hôpital Cochin, Department of Radiology, Université de Paris, 75014 Paris, France; (T.-N.H.-T.); (G.C.)
- Department of Diagnostic Imaging, Vinmec Central Park Hospital, Ho Chi Minh City 70000, Vietnam
- AP-HP.Centre, Hôpital Cochin, Department of Respiratory Physiology, Université de Paris, 75014 Paris, France; (T.H.-H.); (A.-T.D.-X.)
| | - Guillaume Chassagnon
- AP-HP.Centre, Hôpital Cochin, Department of Radiology, Université de Paris, 75014 Paris, France; (T.-N.H.-T.); (G.C.)
| | - Thong Hua-Huy
- AP-HP.Centre, Hôpital Cochin, Department of Respiratory Physiology, Université de Paris, 75014 Paris, France; (T.H.-H.); (A.-T.D.-X.)
| | - Veronique Boussaud
- AP-HP.Centre, Hôpital Cochin, Department of Pneumology, Université de Paris, 75014 Paris, France;
| | - Anh-Tuan Dinh-Xuan
- AP-HP.Centre, Hôpital Cochin, Department of Respiratory Physiology, Université de Paris, 75014 Paris, France; (T.H.-H.); (A.-T.D.-X.)
| | - Marie-Pierre Revel
- AP-HP.Centre, Hôpital Cochin, Department of Radiology, Université de Paris, 75014 Paris, France; (T.-N.H.-T.); (G.C.)
- Correspondence: ; Tel.: +33-1-5841-2471
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12
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Mohanka M, Pinho DF, Garcia H, Kanade R, Bollineni S, Joerns J, Kaza V, Mathews D, Torres F, Zhang S, Banga A. Spectrum of findings on ventilation‒perfusion lung scintigraphy after lung transplantation and association with outcomes. J Heart Lung Transplant 2021; 40:377-386. [PMID: 33648871 DOI: 10.1016/j.healun.2021.01.007] [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: 07/15/2020] [Revised: 01/03/2021] [Accepted: 01/11/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Air trapping (AT) is one of the hallmarks of allograft dysfunction after lung transplantation (LT). Inert gas‒based ventilation‒perfusion (VQ) lung scintigraphy has excellent sensitivity in the detection of AT. METHODS We reviewed the charts of patients who underwent single or double LT between January 2012 and December 2014 (N = 193). Patients without a VQ scintigraphy at the first annual visit (n = 16) and those who did not survive till 1 year (n = 26) were excluded (final n = 151, mean age = 55.8 [SD =14] years, male = 85, female = 66). VQ scintigraphy was independently reviewed and reconciled for the presence and severity of AT by 2 investigators blinded to the clinical data (D.F.P. and D.M.). A 3-year post-transplant survival was the primary end-point. RESULTS AT was common (n = 73, 48.3%). Patients with obstructive lung diseases as the underlying diagnosis (adjusted odds ratio [OR], 4.36, 95% CI: 1.64‒11.6; p = 0.003) and those with lower body mass index (BMI) (BMI < 25 kg/m2 and 25‒30 kg/m2; p < 0.001) had an increased risk of developing AT in the allograft. The presence of AT (adjusted OR, 2.33, 95% CI: 1.01‒5.36; p = 0.04) and peak forced expiratory volume in 1 sec (FEV1) <60% predicted during the first year after LT were independently associated with 3-year mortality. The association of AT with post-transplant mortality was the strongest among patients with BMI <30 kg/m2 and peak FEV1 <60% predicted. CONCLUSIONS The finding of AT on VQ scintigraphy at the first annual visit after LT is independently associated with worse post-transplant mortality. The sub-group of patients who fail to achieve a peak FEV1 of 60% predicted during the first year after LT appears to be the key driver of this association.
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Affiliation(s)
- Manish Mohanka
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Daniella F Pinho
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Heriberto Garcia
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Rohan Kanade
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Srinivas Bollineni
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - John Joerns
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Vaidehi Kaza
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Dana Mathews
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Fernando Torres
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Song Zhang
- Department of Population and Data Sciences, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Amit Banga
- Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas.
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13
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Patrucco F, Allara E, Boffini M, Rinaldi M, Costa C, Albera C, Solidoro P. Twelve-month effects of everolimus on renal and lung function in lung transplantation: differences in chronic lung allograft dysfunction phenotypes. Ther Adv Chronic Dis 2021; 12:2040622321993441. [PMID: 33717427 PMCID: PMC7925948 DOI: 10.1177/2040622321993441] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 01/15/2021] [Indexed: 12/25/2022] Open
Abstract
Background: Chronic lung allograft dysfunction (CLAD), a complication affecting the survival of lung transplanted patients, includes two clinical phenotypes: bronchiolitis obliterans syndrome (BOS) and restrictive allograft syndrome (RAS). Everolimus is used in CLAD because of its antiproliferative mechanism. In lung transplant patients treated with everolimus, the clinical course of renal and lung function has not yet been assessed systematically in CLAD, BOS and RAS patients for more than 6 months. Methods: We retrospectively evaluated the 12-month follow-up of renal and lung function of lung-transplanted patients switched to everolimus and evaluated the reduction in immunosuppressant dosage (ISD) and mortality. Subgroups were based on indication for everolimus treatment: CLAD and non-CLAD patients, BOS and RAS among CLAD patients. Results: We included 26 patients, 17 with CLAD (10 BOS, seven RAS). After 1 year from the everolimus switch, we observed renal function improvement (serum creatinine −17%, estimated glomerular filtration rate +24%) and stable pulmonary function [forced expiratory volume in the first second (FEV1) −0.5%, forced vital capacity (FVC) +0.05%]. RAS patients had progressive functional loss, whereas BOS patients had FEV1 improvement and FVC stability. All-cause mortality was higher in the CLAD versus non-CLAD group (41% versus 11%), without differences between BOS and RAS patients (p > 0.05). All patients had significant and persistent ISD reduction. Conclusion: Lung transplant patients treated with everolimus had improvements in renal function and reduced ISD. We observed sustained improvements in lung function for CLAD related to BOS subgroup results, whereas RAS confirmed the 1-year worsening functional trend. Data seem to suggest one more piece of the puzzle in CLAD phenotyping.
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Affiliation(s)
- Filippo Patrucco
- Division of Respiratory Diseases, Cardiovascular and Thoracic Department, University of Turin, Città della Salute e della Scienza di Torino, C.so Bramante 88/90, 10100 Torino, Italy
| | - Elias Allara
- Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Massimo Boffini
- Division of Cardiac Surgery, Cardiovascular and Thoracic Department, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Mauro Rinaldi
- Division of Cardiac Surgery, Cardiovascular and Thoracic Department, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Cristina Costa
- Division of Virology, Department of Public Health and Pediatrics, University of Turin, Città della Salute e della Scienza di Torino, Torino, Italy
| | - Carlo Albera
- Division of Respiratory Diseases, Medical Sciences Department University of Turin and Cardiovascular and Thoracic Department, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | - Paolo Solidoro
- Division of Respiratory Diseases, Medical Sciences Department University of Turin and Cardiovascular and Thoracic Department, AOU Città della Salute e della Scienza di Torino, Torino, Italy
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14
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Byrne D, Nador RG, English JC, Yee J, Levy R, Bergeron C, Swiston JR, Mets OM, Muller NL, Bilawich AM. Chronic Lung Allograft Dysfunction: Review of CT and Pathologic Findings. Radiol Cardiothorac Imaging 2021; 3:e200314. [PMID: 33778654 PMCID: PMC7978021 DOI: 10.1148/ryct.2021200314] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 11/02/2020] [Accepted: 11/06/2020] [Indexed: 04/14/2023]
Abstract
Chronic lung allograft dysfunction (CLAD) is the most common cause of mortality in lung transplant recipients after the 1st year of transplantation. CLAD has traditionally been classified into two distinct obstructive and restrictive forms: bronchiolitis obliterans syndrome and restrictive allograft syndrome. However, CLAD may manifest with a spectrum of imaging and pathologic findings and a combination of obstructive and restrictive physiologic abnormalities. Although the initial CT manifestations of CLAD may be nonspecific, the progression of findings at follow-up should signal the possibility of CLAD and may be present on imaging studies prior to the development of functional abnormalities of the lung allograft. This review encompasses the evolution of CT findings in CLAD, with emphasis on the underlying pathogenesis and pathologic condition, to enhance understanding of imaging findings. The purpose of this article is to familiarize the radiologist with the initial and follow-up CT findings of the obstructive, restrictive, and mixed forms of CLAD, for which early diagnosis and treatment may result in improved survival. Supplemental material is available for this article. © RSNA, 2021.
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15
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Kaza V, Zhu C, Terada LS, Wang L, Torres F, Bollineni S, Mohanka M, Banga A, Joerns J, Mohanakumar T, Li QZ. Self-reactive antibodies associated with bronchiolitis obliterans syndrome subtype of chronic lung allograft dysfunction. Hum Immunol 2020; 82:25-35. [PMID: 33129576 DOI: 10.1016/j.humimm.2020.10.006] [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: 05/28/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND Chronic Lung Allograft Dysfunction (CLAD) remains the major limitation in long term survival after lung transplantation. Our objective is to evaluate for the presence of autoantibodies to self-antigens, which is a pathway along with complex interplay with immune as well as non-immune mechanisms that leads to a fibroproliferative process resulting in CLAD. METHODS Serum profiles of IgG autoantibodies were evaluated using customized proteomic microarray with 124 antigens. Output from microarray analyzed as antibody scores is correlated with bronchiolitis obliterans (BOS) subtype of CLAD using Mann-Whitney U test or Fisher exact test. Autoantibodies were evaluated for their predictive value for progressive BOS using a Cox proportional hazard model. BOS free survival and overall survival was analyzed using Kaplan-Meier survival analysis. RESULTS Forty- two patients included in the study are grouped into "stable BOS" and "progressive BOS" for comparisons. Pulmonary fibrosis is the major indication for lung transplantation in our cohort. Progressive BOS group had significantly worse survival (p < 0.005). Sixteen IgG autoantibodies are significantly elevated at baseline in progressive BOS group. Six among them correlated with worse BOS free survival (p < 0.05). In addition, these six IgG autoantibodies remain elevated at three months and one year after lung transplantation. CONCLUSION Pre-existing IgG autoantibodies correlate with progressive BOS and survival in a single center, small cohort of lung transplant recipients. Further validation with larger sample size, external cohort and confirmation with additional tissue, bronchoalveolar lavage samples are necessary to confirm the preliminary findings in our study.
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Affiliation(s)
- Vaidehi Kaza
- Division of Pulmonary Critical Care, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| | - Chengsong Zhu
- Department of Immunology, Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lance S Terada
- Division of Pulmonary Critical Care, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Li Wang
- Department of Immunology, Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Fernando Torres
- Division of Pulmonary Critical Care, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Srinivas Bollineni
- Division of Pulmonary Critical Care, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Manish Mohanka
- Division of Pulmonary Critical Care, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Amit Banga
- Division of Pulmonary Critical Care, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - John Joerns
- Division of Pulmonary Critical Care, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - T Mohanakumar
- Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA
| | - Quan-Zhen Li
- Department of Immunology, Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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16
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Abstract
Lung transplantation improves survival and quality of life in patients with advanced pulmonary disease. Over the past several decades, the volume of lung transplants has grown substantially, with increasing transplantation of older and acutely ill individuals facilitated by improved utilization and preservation of available donor organs. Other advances include improvements in the diagnosis and mechanistic understanding of frequent post-transplant complications, such as primary graft dysfunction, acute rejection, and chronic lung allograft dysfunction (CLAD). CLAD occurs as a result of the host immune response to the allograft and is the principal factor limiting long-term survival after lung transplantation. Two distinct clinical phenotypes of CLAD have emerged, bronchiolitis obliterans syndrome and restrictive allograft syndrome, and this distinction has enabled further understanding of underlying immune mechanisms. Building on these advances, ongoing studies are exploring novel approaches to diagnose, prevent, and treat CLAD. Such studies are necessary to improve long-term outcomes for lung transplant recipients.
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Affiliation(s)
- Aparna C Swaminathan
- Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA; , , .,Duke Clinical Research Institute, Durham, North Carolina 27710, USA
| | - Jamie L Todd
- Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA; , , .,Duke Clinical Research Institute, Durham, North Carolina 27710, USA
| | - Scott M Palmer
- Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA; , , .,Duke Clinical Research Institute, Durham, North Carolina 27710, USA
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17
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Leuschner G, Lauseker M, Howanietz AS, Milger K, Veit T, Munker D, Schneider C, Weig T, Michel S, Barton J, Meiser B, Dinkel J, Neurohr C, Behr J, Kneidinger N. Longitudinal lung function measurements in single lung transplant recipients with chronic lung allograft dysfunction. J Heart Lung Transplant 2020; 39:1270-1278. [PMID: 32917480 DOI: 10.1016/j.healun.2020.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Phenotyping chronic lung allograft dysfunction (CLAD) in single lung transplant (SLTX) recipients is challenging. The aim of this study was to assess the diagnostic and prognostic value of longitudinal lung function tests in SLTX recipients with CLAD. METHODS A total of 295 SLTX recipients were analyzed and stratified according to native lung physiology. In addition to spirometry, measurements of static lung volumes and lung capacities were used to phenotype patients and to assess their prognostic value. Outcome was survival after CLAD onset. Patients with insufficient clinical information were excluded (n = 71). RESULTS Of 224 lung transplant recipients, 105 (46.9%) developed CLAD. Time to CLAD onset (hazard ratio [HR]: 0.82, 95% CI: 0.74-0.90; p < 0.001), severity of CLAD at onset (HR: 0.97, 95% CI: 0.94-0.99; p = 0.009), and progression after onset of CLAD (HR: 1.03, 95% CI: 1.00-1.05; p = 0.023) were associated with outcome. Phenotypes at onset were bronchiolitis obliterans syndrome (BOS) (59.1%), restrictive allograft syndrome (RAS) (12.4%), mixed phenotype (6.7%), and undefined phenotype (21.9%). Survival estimates differed significantly between phenotypes (p = 0.004), with RAS and mixed phenotype being associated with the worst survival, followed by BOS and undefined phenotype. Finally, a higher hazard for mortality was noticed for RAS (HR: 2.34, 95% CI: 0.99-5.52; p = 0.054) and mixed phenotype (HR: 3.30, 95% CI: 1.20-9.11; p = 0.021) while controlling for time to CLAD onset and severity of CLAD at onset. CONCLUSIONS Phenotyping CLAD in SLTX remains challenging with a high number of patients with an undefined phenotype despite comprehensive lung function testing. However, phenotyping is of prognostic value. Furthermore, early, severe, and progressive CLADs are associated with worse survival.
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Affiliation(s)
- Gabriela Leuschner
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | - Michael Lauseker
- Institute for Medical Information Processing, Biometry, and Epidemiology
| | - Anne-Sophie Howanietz
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | - Katrin Milger
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | - Tobias Veit
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | - Dieter Munker
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | | | | | | | - Jürgen Barton
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | | | - Julien Dinkel
- Institute for Clinical Radiology, University of Munich (LMU), Munich, Munich, Germany
| | - Claus Neurohr
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | - Jürgen Behr
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL)
| | - Nikolaus Kneidinger
- Department of Internal Medicine V, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL).
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18
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Levy L, Huszti E, Renaud-Picard B, Berra G, Kawashima M, Takahagi A, Fuchs E, Ghany R, Moshkelgosha S, Keshavjee S, Singer LG, Tikkanen J, Martinu T. Risk assessment of chronic lung allograft dysfunction phenotypes: Validation and proposed refinement of the 2019 International Society for Heart and Lung Transplantation classification system. J Heart Lung Transplant 2020; 39:761-770. [DOI: 10.1016/j.healun.2020.04.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 03/14/2020] [Accepted: 04/12/2020] [Indexed: 12/26/2022] Open
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19
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Todd JL. Putting the 2019 CLAD consensus definitions to the test: Two steps forward, one step back? J Heart Lung Transplant 2020; 39:771-773. [PMID: 32620449 DOI: 10.1016/j.healun.2020.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 06/15/2020] [Indexed: 10/24/2022] Open
Affiliation(s)
- Jamie L Todd
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Duke University Medical Center, Durham, North Carolina; Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina.
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20
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Combs MP, Xia M, Wheeler DS, Belloli EA, Walker NM, Braeuer RR, Lyu DM, Murray S, Lama VN. Fibroproliferation in chronic lung allograft dysfunction: Association of mesenchymal cells in bronchoalveolar lavage with phenotypes and survival. J Heart Lung Transplant 2020; 39:815-823. [PMID: 32360292 DOI: 10.1016/j.healun.2020.04.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 04/06/2020] [Accepted: 04/13/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Chronic lung allograft dysfunction (CLAD), the primary cause of poor outcome after lung transplantation, arises from fibrotic remodeling of the allograft and presents as diverse clinical phenotypes with variable courses. Here, we investigate whether bronchoalveolar lavage (BAL) mesenchymal cell activity at CLAD onset can inform regarding disease phenotype, progression, and survival. METHODS Mesenchymal cell colony-forming units (CFUs) were measured in BAL obtained at CLAD onset (n = 77) and CLAD-free time post-transplant matched controls (n = 77). CFU counts were compared using Wilcoxon's rank-sum test. Cox proportional hazards and restricted means models were utilized to investigate post-CLAD survival. RESULTS Higher mesenchymal CFU counts were noted in BAL at the time of CLAD onset than in CLAD-free controls. Patients with restrictive allograft syndrome had higher BAL mesenchymal CFU count at CLAD onset than patients with bronchiolitis obliterans syndrome (p = 0.011). Patients with high mesenchymal CFU counts (≥10) at CLAD onset had worse outcomes than those with low (<10) CFU counts, with shorter average survival (2.64 years vs 4.25 years; p = 0.027) and shorter progression-free survival, defined as time to developing either CLAD Stage 3 or death (0.97 years vs 2.70 years; p < 0.001). High CFU count remained predictive of decreased overall survival and progression-free survival after accounting for the CLAD phenotype and other clinical factors in multivariable analysis. CONCLUSIONS Fulminant fibroproliferation with higher mesenchymal CFU counts in BAL is noted in restrictive allograft syndrome and is independently associated with poor survival after CLAD onset.
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Affiliation(s)
- Michael P Combs
- Department of Internal Medicine, Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan
| | - Meng Xia
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - David S Wheeler
- Department of Internal Medicine, Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan
| | - Elizabeth A Belloli
- Department of Internal Medicine, Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan
| | - Natalie M Walker
- Department of Internal Medicine, Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan
| | - Russell R Braeuer
- Department of Internal Medicine, Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan
| | - Dennis M Lyu
- Department of Internal Medicine, Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan
| | - Susan Murray
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - Vibha N Lama
- Department of Internal Medicine, Division of Pulmonary & Critical Care, University of Michigan, Ann Arbor, Michigan.
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21
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Abstract
PURPOSE OF REVIEW Chronic lung allograft dysfunction (CLAD) has been recently introduced as an umbrella-term encompassing all forms of chronic pulmonary function decline posttransplant with bronchiolitis obliterans syndrome and restrictive allograft syndrome as the most important subtypes. Differential diagnosis and management, however, remains complicated. RECENT FINDINGS Herein, we provide an overview of the different diagnostic criteria (pulmonary function, body plethysmography and radiology) used to differentiate bronchiolitis obliterans syndrome and restrictive allograft syndrome, their advantages and disadvantages as well as potential problems in making an accurate differential diagnosis. Furthermore, we discuss recent insights in CLAD management and treatment and advances in the search for accurate biomarkers of CLAD. SUMMARY Careful dissection of CLAD phenotypes is of utmost importance to assess patient prognosis, but uniform diagnostic criteria are desperately needed. There is a long way ahead, but the first steps towards this goal are now taken; tailored individualized therapy will be the golden standard to treat CLAD in the future, but randomized placebo-controlled and multicentre trials are needed to identify new and powerful therapeutic agents.
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22
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Kotecha S, Paraskeva MA, Levin K, Snell GI. An update on chronic lung allograft dysfunction. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:417. [PMID: 32355861 PMCID: PMC7186740 DOI: 10.21037/atm.2020.01.05] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chronic lung allograft dysfunction (CLAD) remains a significant challenge and the major determinant of morbidity and mortality post lung transplantation (LTx). The definition of CLAD has evolved significantly over the last ten years, reflecting better understanding of pathophysiology and different phenotypes. While there is an agreed consensus approach to CLAD, questions remain regarding the limitations of lung function parameters as well as the role of imaging and histopathology. Here we present a current snapshot of the definition of CLAD, its evolution and future directions.
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Affiliation(s)
- Sakhee Kotecha
- Lung Transplant Service, Alfred Hospital, Melbourne, Australia
| | | | - Kovi Levin
- Lung Transplant Service, Alfred Hospital, Melbourne, Australia
| | - Gregory I Snell
- Lung Transplant Service, Alfred Hospital, Melbourne, Australia
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23
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Blumenthal JA, Smith PJ, Sherwood A, Mabe S, Snyder L, Frankel C, McKee DC, Hamilton N, Keefe FJ, Shearer S, Schwartz J, Palmer S. Remote Therapy to Improve Outcomes in Lung Transplant Recipients: Design of the INSPIRE-III Randomized Clinical Trial. Transplant Direct 2020; 6:e535. [PMID: 32195326 PMCID: PMC7056276 DOI: 10.1097/txd.0000000000000979] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 12/21/2019] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Impaired functional capacity and emotional distress are associated with lower quality of life (QoL) and worse clinical outcomes in post lung transplant patients. Strategies to increase physical activity and reduce distress are needed. METHODS The Investigational Study of Psychological Interventions in Recipients of Lung Transplant-III study is a single site, parallel group randomized clinical trial in which 150 lung transplant recipients will be randomly assigned to 3 months of telephone-delivered coping skills training combined with aerobic exercise (CSTEX) or to a Standard of Care plus Education control group. The primary endpoints are a global measure of distress and distance walked on the 6-Minute Walk Test. Secondary outcomes include measures of transplant-specific QoL, frailty, health behaviors, and chronic lung allograft dysfunction-free survival. RESULTS Participants will be evaluated at baseline, at the conclusion of 3 months of weekly treatment, at 1-year follow-up, and followed annually thereafter for clinical events for up to 4 years (median = 2 y). We also will determine whether functional capacity, distress, and health behaviors (eg, physical activity, medication adherence, and volume of air forcefully exhaled in 1 second (FEV1), mediate the effects of the CSTEX intervention on clinical outcomes. CONCLUSIONS Should the CSTEX intervention result in better outcomes compared with the standard of care plus post-transplant education, the remotely delivered CSTEX intervention can be made available to all lung transplant recipients as a way of enhancing their QoL and improving clinical outcomes.
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Affiliation(s)
- James A. Blumenthal
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Patrick J. Smith
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Andrew Sherwood
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Stephanie Mabe
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Laurie Snyder
- Department of Medicine, Duke University Medical Center, Durham, NC
| | - Courtney Frankel
- Department of Medicine, Duke University Medical Center, Durham, NC
| | - Daphne C. McKee
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Natalie Hamilton
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Francis J. Keefe
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Sheila Shearer
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Jeanne Schwartz
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Scott Palmer
- Department of Medicine, Duke University Medical Center, Durham, NC
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24
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Lawaetz Schultz HH, Møller CH, Møller-Sørensen H, Mortensen J, Lund TK, Andersen CB, Perch M, Carlsen J, Iversen M. Variation in Time to Peak Values for Different Lung Function Parameters After Double Lung Transplantation. Transplant Proc 2020; 52:295-301. [PMID: 31911058 DOI: 10.1016/j.transproceed.2019.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 10/08/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Establishment of baseline values for forced expiratory volume in the first second (FEV1), forced vital capacity (FVC), or total lung capacity (TLC) is required when diagnosing and phenotyping chronic lung allograft dysfunction after lung transplant. It is generally accepted that the baseline (peak) values of these parameters occur simultaneously, but this assumption has not been substantiated for TLC. METHODS All lung function measurements in all double lung transplant recipients from a single center in the period from 1992-2014 were included. Time to baseline FEV1 was assessed according to standards from the International Society for Heart and Lung Transplantation, and time to peak FVC, TLC, and diffusion capacity for carbon monoxide were evaluated. RESULTS A total of 288 double lung transplants surviving more than 3 months after transplant were included. Baseline FEV1 occurred at a median of 0.77 years post transplant and was statistically different from median times to the peak FVC (1.02 years), to peak TLC (1.37 years), and to peak diffusion capacity for carbon monoxide 1.04 years post transplant (all log-rank P < .001). At the time of baseline FEV1, FVC, and TLC were at a mean of 96% and 95% of their peak values, respectively. CONCLUSION The peak lung function is reached at different time points for different parameters post transplant with FEV1 baseline occurring first. For most patients values of FVC and TLC obtained at time for baseline FEV1 is a good estimate of peak values, but in a small percentage of patients this procedure may jeopardize phenotyping of chronic lung allograft dysfunction based solely on lung function parameters.
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Affiliation(s)
- Hans Henrik Lawaetz Schultz
- Department of Cardiology, Section of Lung Transplantation, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
| | - Christian Holdflod Møller
- Department of Cardiothoracic Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Hasse Møller-Sørensen
- Department of Thoracic Anaesthesia, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jann Mortensen
- Department of Clinical Physiology, Nuclear Medicine and PET, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Thomas Kromann Lund
- Department of Cardiology, Section of Lung Transplantation, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Claus B Andersen
- Department of Pathology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Michael Perch
- Department of Cardiology, Section of Lung Transplantation, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jørn Carlsen
- Department of Cardiology, Section of Lung Transplantation, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Martin Iversen
- Department of Cardiology, Section of Lung Transplantation, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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25
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Philippot Q, Debray MP, Bun R, Frija-Masson J, Bunel V, Morer L, Roux A, Picard C, Jebrak G, Dauriat G, Castier Y, Cazes A, Mal H, Taupin JL, Couffignal C, Brugière O. Use of CT-SCAN score and volume measures to early identify restrictive allograft syndrome in single lung transplant recipients. J Heart Lung Transplant 2019; 39:125-133. [PMID: 31836403 DOI: 10.1016/j.healun.2019.11.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/16/2019] [Accepted: 11/20/2019] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Restrictive allograft syndrome (RAS) after lung transplantation (LTx) is associated with the poorer graft survival in patients with chronic lung allograft dysfunction (CLAD). Nevertheless, its diagnostic criteria have not been clearly defined after single-LTx (SLTx). Hence, we studied an SLTx cohort with CLAD to investigate the utility of both computed tomography (CT)-score/volume measures and functional spirometric criteria for the early identification of RAS in this population. METHODS We included 51 patients with SLTx (17 RAS, 17 bronchiolitis obliterans syndrome [BOS], and 17 stable condition). The criteria for RAS diagnosis in SLTx included forced vital capacity (FVC) <80% baseline (BL) or forced expiratory volume in 1 second (FEV1) <80% BL with an FEV1/FVC ratiounchanged or >0.7 and persistent CT-scan-lung opacities. We defined 4 time points (T): T-baseline, T-onset (first CT-scan-opacities), T-follow-up, and T-last. RESULTS In patients with RAS, the spirometric criteria for RAS at T-onset were reached in only 47% (FVC decline <80% BL [(29%] or FEV1 <80% BL/ratiounchanged or >0.7 [41%]), whereas at the same T-onset date, the graft CT-score increased to 5 (4-6) vs 1 (0-2) at baseline (p < 0.001) (CT - score ≥2 at T-onset in 100% and ΔCT - score ≥2 in 74% of patients with RAS), and the median CT-scan graft volume decreased to 1,722 ml (vs 1,796 ml at T-baseline, p = 0.003) (decreased CT-graft - volume <90% BL in 50% of patients). In contrast, in patients with BOS, CT-score/volume were unchanged at T-onset vs T-baseline (p = 0.8, p = 0.68, respectively). CONCLUSION Our results suggest that the use of a simple CT-score and to a lesser extent, CT-volume measures, might allow for the early identification and/or prediction of RAS in SLTx rather than functional criteria.
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Affiliation(s)
- Quentin Philippot
- Lung Transplant Center and Center of Expertise for Cystic Fibrosis, Foch Hospital, Suresnes, France; Service de Pneumologie and Lung Transplant Center, Bichat Hospital, Paris, France
| | | | - René Bun
- Biostatistical Department, Unité de recherche clinique Paris Nord Val de Seine, URC PNVS
| | | | - Vincent Bunel
- Service de Pneumologie and Lung Transplant Center, Bichat Hospital, Paris, France
| | - Lise Morer
- Service de Pneumologie and Lung Transplant Center, Bichat Hospital, Paris, France
| | - Antoine Roux
- Lung Transplant Center and Center of Expertise for Cystic Fibrosis, Foch Hospital, Suresnes, France
| | - Clément Picard
- Lung Transplant Center and Center of Expertise for Cystic Fibrosis, Foch Hospital, Suresnes, France
| | - Gilles Jebrak
- Service de Pneumologie and Lung Transplant Center, Bichat Hospital, Paris, France
| | - Gaelle Dauriat
- Service de Pneumologie and Lung Transplant Center, Bichat Hospital, Paris, France
| | - Yves Castier
- Thoracic Surgery Department, Bichat Hospital, Paris, France
| | - Aurélie Cazes
- Surgical Intensive Care Department, Bichat Hospital, Paris, France
| | - Hervé Mal
- Service de Pneumologie and Lung Transplant Center, Bichat Hospital, Paris, France; Immunology and Histocompatibility Department, Saint-Louis Hospital, Paris, France
| | | | | | - Olivier Brugière
- Lung Transplant Center and Center of Expertise for Cystic Fibrosis, Foch Hospital, Suresnes, France.
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26
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Glanville AR, Verleden GM, Todd JL, Benden C, Calabrese F, Gottlieb J, Hachem RR, Levine D, Meloni F, Palmer SM, Roman A, Sato M, Singer LG, Tokman S, Verleden SE, von der Thüsen J, Vos R, Snell G. Chronic lung allograft dysfunction: Definition and update of restrictive allograft syndrome-A consensus report from the Pulmonary Council of the ISHLT. J Heart Lung Transplant 2019; 38:483-492. [PMID: 31027539 DOI: 10.1016/j.healun.2019.03.008] [Citation(s) in RCA: 169] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 03/18/2019] [Indexed: 02/07/2023] Open
Affiliation(s)
- Allan R Glanville
- Lung Transplant Unit, St. Vincent's Hospital, Sydney, New South Wales, Australia
| | | | - Jamie L Todd
- Division of Pulmonary, Allergy and Critical Care Medicine, Duke University, Durham, North Carolina, USA
| | | | - Fiorella Calabrese
- Department of Cardiothoracic and Vascular Sciences, University of Padova Medical School, Padova, Italy
| | - Jens Gottlieb
- Department of Respiratory Medicine, Hannover Medical School, Member of the German Center for Lung Research, Hannover, Germany
| | - Ramsey R Hachem
- Division of Pulmonary & Critical Care, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Deborah Levine
- Pulmonary Disease and Critical Care Medicine, University of Texas Health Science Center San Antonio, San Antonio, Texas, USA
| | - Federica Meloni
- Department of Respiratory Diseases Policlinico San Matteo Foundation & University of Pavia, Pavia, Italy
| | - Scott M Palmer
- Division of Pulmonary, Allergy and Critical Care Medicine, Duke University, Durham, North Carolina, USA
| | - Antonio Roman
- Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Masaaki Sato
- Department of Thoracic Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Lianne G Singer
- Toronto Lung Transplant Program, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Sofya Tokman
- Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | | | - Jan von der Thüsen
- Department of Pathology, University Medical Center, Rotterdam, The Netherlands
| | - Robin Vos
- University Hospital Gasthuisberg, Leuven, Belgium
| | - Gregory Snell
- Lung Transplant Service, The Alfred Hospital, Melbourne, Victoria, Australia
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27
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Validation of a post-transplant chronic lung allograft dysfunction classification system. J Heart Lung Transplant 2019; 38:166-173. [DOI: 10.1016/j.healun.2018.09.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 09/21/2018] [Accepted: 09/25/2018] [Indexed: 01/25/2023] Open
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28
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Weigt SS, Wang X, Palchevskiy V, Patel N, Derhovanessian A, Shino MY, Sayah DM, Lynch JP, Saggar R, Ross DJ, Kubak BM, Ardehali A, Palmer S, Husain S, Belperio JA. Gene Expression Profiling of Bronchoalveolar Lavage Cells During Aspergillus Colonization of the Lung Allograft. Transplantation 2019; 102:986-993. [PMID: 29256975 DOI: 10.1097/tp.0000000000002058] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Aspergillus colonization after lung transplant is associated with an increased risk of chronic lung allograft dysfunction (CLAD). We hypothesized that gene expression during Aspergillus colonization could provide clues to CLAD pathogenesis. METHODS We examined transcriptional profiles in 3- or 6-month surveillance bronchoalveolar lavage fluid cell pellets from recipients with Aspergillus fumigatus colonization (n = 12) and without colonization (n = 10). Among the Aspergillus colonized, we also explored profiles in those who developed CLAD (n = 6) or remained CLAD-free (n = 6). Transcription profiles were assayed with the HG-U133 Plus 2.0 microarray (Affymetrix). Differential gene expression was based on an absolute fold difference of 2.0 or greater and unadjusted P value less than 0.05. We used NIH Database for Annotation, Visualization and Integrated Discovery for functional analyses, with false discovery rates less than 5% considered significant. RESULTS Aspergillus colonization was associated with differential expression of 489 probe sets, representing 404 unique genes. "Defense response" genes and genes in the "cytokine-cytokine receptor" Kyoto Encyclopedia of Genes and Genomes pathway were notably enriched in this list. Among Aspergillus colonized patients, CLAD development was associated with differential expression of 69 probe sets, representing 64 unique genes. This list was enriched for genes involved in "immune response" and "response to wounding", among others. Notably, both chitinase 3-like-1 and chitotriosidase were associated with progression to CLAD. CONCLUSIONS Aspergillus colonization is associated with gene expression profiles related to defense responses including cytokine signaling. Epithelial wounding, as well as the innate immune response to chitin that is present in the fungal cell wall, may be key in the link between Aspergillus colonization and CLAD.
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Affiliation(s)
- S Samuel Weigt
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Xiaoyan Wang
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Vyacheslav Palchevskiy
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Naman Patel
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Ariss Derhovanessian
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Michael Y Shino
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - David M Sayah
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Joseph P Lynch
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Rajan Saggar
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - David J Ross
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Bernie M Kubak
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Abbas Ardehali
- Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Scott Palmer
- Department of Medicine, Duke University, Durham, NC
| | - Shahid Husain
- Department of Medicine, Division of Infectious Diseases, University of Toronto, Toronto, Ontario, Canada
| | - John A Belperio
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
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29
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Prognostic significance of early pulmonary function changes after onset of chronic lung allograft dysfunction. J Heart Lung Transplant 2018; 38:184-193. [PMID: 30466803 DOI: 10.1016/j.healun.2018.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 10/18/2018] [Accepted: 10/24/2018] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Chronic lung allograft dysfunction (CLAD), including the phenotypes of bronchiolitis obliterans syndrome (BOS) and restrictive CLAD (R-CLAD), represents the leading cause of late death after lung transplantation. Little is known, however, regarding the natural history or prognostic significance of pulmonary function changes after the onset of these conditions. We examined changes in forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) over the first 18 months after CLAD. We also sought to determine whether lung function changes occurring early after CLAD impact longer term outcomes. METHODS We performed a retrospective analysis of 216 bilateral lung recipients with CLAD, which included those with R-CLAD (n = 65) or BOS (n = 151). The course of FEV1 and FVC after CLAD was described. Cox proportional hazards models were used to evaluate the impact of a ≥10% decline in FEV1 or FVC within the first 6 months of CLAD on graft loss after that time. RESULTS Lung recipients with CLAD, whether BOS or R-CLAD, had the largest decreases in FEV1 and FVC within the first 6 months after onset. Moreover, a decline in FEV1 or FVC of ≥10% within the first 6 months after CLAD was associated with a significantly increased hazard for graft loss after that time (hazard ratio [HR] = 3.17, 95% confidence interval [CI] 1.56 to 6.42, p = 0.001, and HR = 2.80, 95% CI 1.66 to 4.70, p ≤ 0.001, respectively), an effect observed in both BOS and R-CLAD patients. CONCLUSIONS Early physiologic changes after CLAD were independently associated with graft loss. This suggests lung function changes after CLAD, specifically a ≥10% decline in FEV1 or FVC, could be a surrogate measure of graft survival.
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30
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Pinho DF, Banga A, Torres F, Mathews D. Ventilation perfusion pulmonary scintigraphy in the evaluation of pre-and post-lung transplant patients. Transplant Rev (Orlando) 2018; 33:107-114. [PMID: 30415913 DOI: 10.1016/j.trre.2018.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/04/2018] [Accepted: 10/20/2018] [Indexed: 12/18/2022]
Abstract
Lung transplantation is an established treatment for patients with a variety of advanced lung diseases. Imaging studies play a valuable role not only in evaluation of patients prior to lung transplantation, but also in the follow up of patients after transplantation for detection of complications. After lung transplantation, complications can occur as a result of surgical procedure, pulmonary embolism and ultimately chronic lung allograft dysfunction. Lung scintigraphy, which includes physiologic assessment of lung ventilation and perfusion by imaging, has become an important procedure in the evaluation of these patients, assuming a complementary role to high resolution anatomic imaging (computed tomography [CT]), as well as spirometry. The purpose of this atlas article is to demonstrate the uses of ventilation perfusion scintigraphy in the pre-transplantation setting for surgical planning and in the evaluation of complications post-lung transplantation based upon experience at our institution.
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Affiliation(s)
- Daniella F Pinho
- Department of Radiology, The University of Texas Southwestern Medical Center, United States.
| | - Amit Banga
- Lung Transplant Program, Division of Pulmonary and Critical Care Medicine, Department of Medicine, The University of Texas Southwestern Medical Center, United States
| | - Fernando Torres
- Lung Transplant Program, Division of Pulmonary and Critical Care Medicine, Department of Medicine, The University of Texas Southwestern Medical Center, United States
| | - Dana Mathews
- Department of Radiology, The University of Texas Southwestern Medical Center, United States
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31
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Horie M, Salazar P, Saito T, Binnie M, Brock K, Yasufuku K, Azad S, Keshavjee S, Martinu T, Paul N. Quantitative chest CT for subtyping chronic lung allograft dysfunction and its association with survival. Clin Transplant 2018; 32:e13233. [DOI: 10.1111/ctr.13233] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Miho Horie
- Joint Department of Medical Imaging; University Health Network; University of Toronto; Toronto ON Canada
- Institute for Biomaterials and Biomedical Engineering; University of Toronto; Toronto ON Canada
| | | | - Tomohito Saito
- Latner Thoracic Surgery Research Laboratories; Toronto General Research Institute; University Health Network; University of Toronto; Toronto ON Canada
- Toronto Lung Transplant Program; University Health Network; University of Toronto; Toronto ON Canada
- Department of Thoracic Surgery; Kansai Medical University; Hirakata Japan
| | - Matthew Binnie
- Toronto Lung Transplant Program; University Health Network; University of Toronto; Toronto ON Canada
| | - Kristy Brock
- Department of Imaging Physics; The University of Texas M.D. Anderson Cancer Center; Houston TX USA
| | - Kazuhiro Yasufuku
- Latner Thoracic Surgery Research Laboratories; Toronto General Research Institute; University Health Network; University of Toronto; Toronto ON Canada
- Toronto Lung Transplant Program; University Health Network; University of Toronto; Toronto ON Canada
| | - Sassan Azad
- Latner Thoracic Surgery Research Laboratories; Toronto General Research Institute; University Health Network; University of Toronto; Toronto ON Canada
| | - Shaf Keshavjee
- Institute for Biomaterials and Biomedical Engineering; University of Toronto; Toronto ON Canada
- Toronto Lung Transplant Program; University Health Network; University of Toronto; Toronto ON Canada
- Department of Thoracic Surgery; Kansai Medical University; Hirakata Japan
| | - Tereza Martinu
- Toronto Lung Transplant Program; University Health Network; University of Toronto; Toronto ON Canada
| | - Narinder Paul
- Joint Department of Medical Imaging; University Health Network; University of Toronto; Toronto ON Canada
- Institute for Biomaterials and Biomedical Engineering; University of Toronto; Toronto ON Canada
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32
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Jin YP, Valenzuela NM, Zhang X, Rozengurt E, Reed EF. HLA Class II-Triggered Signaling Cascades Cause Endothelial Cell Proliferation and Migration: Relevance to Antibody-Mediated Transplant Rejection. THE JOURNAL OF IMMUNOLOGY 2018; 200:2372-2390. [PMID: 29475988 DOI: 10.4049/jimmunol.1701259] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/16/2018] [Indexed: 12/13/2022]
Abstract
Transplant recipients developing donor-specific HLA class II (HLA-II) Abs are at higher risk for Ab-mediated rejection (AMR) and transplant vasculopathy. To understand how HLA-II Abs cause AMR and transplant vasculopathy, we determined the signaling events triggered in vascular endothelial cells (EC) following Ab ligation of HLA-II molecules. HLA-II expression in EC was induced by adenoviral vector expression of CIITA or by pretreatment with TNF-α/IFN-γ. Ab ligation of class II stimulated EC proliferation and migration. Class II Ab also induced activation of key signaling nodes Src, focal adhesion kinase, PI3K, and ERK that regulated downstream targets of the mammalian target of rapamycin (mTOR) pathway Akt, p70 ribosomal S6 kinase, and S6 ribosomal protein. Pharmacological inhibitors and small interfering RNA showed the protein kinases Src, focal adhesion kinase, PI3K/Akt, and MEK/ERK regulate class II Ab-stimulated cell proliferation and migration. Treatment with rapalogs for 2 h did not affect HLA-II Ab-induced phosphorylation of ERK; instead, mTOR complex (mTORC)1 targets were dependent on activation of ERK. Importantly, suppression of mTORC2 for 24 h with rapamycin or everolimus or treatment with mTOR active-site inhibitors enhanced HLA-II Ab-stimulated phosphorylation of ERK. Furthermore, knockdown of Rictor with small interfering RNA caused overactivation of ERK while abolishing phosphorylation of Akt Ser473 induced by class II Ab. These data are different from HLA class I Ab-induced activation of ERK, which is mTORC2-dependent. Our results identify a complex signaling network triggered by HLA-II Ab in EC and indicate that combined ERK and mTORC2 inhibitors may be required to achieve optimal efficacy in controlling HLA-II Ab-mediated AMR.
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Affiliation(s)
- Yi-Ping Jin
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, CA 90095; and
| | - Nicole M Valenzuela
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, CA 90095; and
| | - Xiaohai Zhang
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, CA 90095; and
| | - Enrique Rozengurt
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Elaine F Reed
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, CA 90095; and
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33
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Shino MY, Weigt SS, Li N, Derhovanessian A, Sayah DM, Saggar R, Huynh RH, Gregson AL, Ardehali A, Ross DJ, Lynch JP, Elashoff RM, Belperio JA. The Prognostic Importance of Bronchoalveolar Lavage Fluid CXCL9 During Minimal Acute Rejection on the Risk of Chronic Lung Allograft Dysfunction. Am J Transplant 2018; 18:136-144. [PMID: 28637080 PMCID: PMC5739954 DOI: 10.1111/ajt.14397] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 06/11/2017] [Accepted: 06/12/2017] [Indexed: 01/25/2023]
Abstract
The clinical significance and treatment strategies for minimal acute rejection (grade A1), the most common form of acute rejection (AR), remain controversial. In this retrospective single-center cohort study of 441 lung transplant recipients, we formally evaluate the association between minimal AR and chronic lung allograft dysfunction (CLAD) and test a novel hypothesis using bronchoalveolar lavage (BAL) CXCL9 concentration during minimal AR as a biomarker of subsequent CLAD development. In univariable and multivariable models adjusted for all histopathologic injury patterns, minimal AR was not associated with CLAD development. However, minimal AR with elevated BAL CXCL9 concentrations markedly increased CLAD risk in a dose-response manner. Minimal AR with CXCL9 concentrations greater than the 25th, 50th, and 75th percentile had adjusted hazard ratios (HRs) for CLAD of 1.1 (95% confidence interval [CI] 0.8-1.6), 1.6 (95% CI 1.1-2.3), and 2.2 (95% CI 1.4-3.4), respectively. Thus we demonstrate the utility of BAL CXCL9 measurement as a prognostic biomarker that allows discrimination of recipients at increased risk of CLAD development after minimal AR. BAL CXCL9 measurement during transbronchial biopsies may provide clinically useful prognostic data and guide treatment decisions for this common form of AR, as a possible strategy to minimize CLAD development.
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Affiliation(s)
- MY Shino
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - SS Weigt
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - N Li
- Department of Biomathematics, University of California at Los Angeles, Los Angeles, CA 90095-1652
| | - A Derhovanessian
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - DM Sayah
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - R Saggar
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - Richard H. Huynh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - AL Gregson
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1688
| | - A Ardehali
- Division of Cardiothoracic Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1741
| | - DJ Ross
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - JP Lynch
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
| | - RM Elashoff
- Department of Biomathematics, University of California at Los Angeles, Los Angeles, CA 90095-1652
| | - JA Belperio
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095-1690
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34
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Verleden SE, Vos R, Vanaudenaerde BM, Verleden GM. Chronic lung allograft dysfunction phenotypes and treatment. J Thorac Dis 2017; 9:2650-2659. [PMID: 28932572 DOI: 10.21037/jtd.2017.07.81] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Chronic lung allograft dysfunction (CLAD) remains a major hurdle limiting long-term survival post lung transplantation. Given the clinical heterogeneity of CLAD, recently two phenotypes of CLAD have been defined [bronchiolitis obliterans syndrome (BOS) vs. restrictive allograft syndrome (RAS) or restrictive CLAD (rCLAD)]. BOS is characterized by an obstructive pulmonary function, air trapping on CT and obliterative bronchiolitis (OB) on histopathology, while RAS/rCLAD patients show a restrictive pulmonary function, persistent pleuro-parenchymal infiltrates on CT and pleuroparenchymal fibro-elastosis on biopsies. Importantly, the patients with RAS/rCLAD have a severely limited survival post diagnosis of 6-18 months compared to 3-5 years after BOS diagnosis. In this review, we will review historical evidence for this heterogeneity and we will highlight the clinical, radiological, histopathological characteristics of both phenotypes, as well as their risk factors. Treatment of CLAD remains troublesome, nevertheless, we will give an overview of different treatment strategies that have been tried with some success. Adequate phenotyping remains difficult but is clearly needed for both clinical and scientific purposes.
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Affiliation(s)
- Stijn E Verleden
- Department of Clinical and Experimental Medicine, Lung Transplant Unit, KU Leuven, Leuven, Belgium
| | - Robin Vos
- Department of Clinical and Experimental Medicine, Lung Transplant Unit, KU Leuven, Leuven, Belgium
| | - Bart M Vanaudenaerde
- Department of Clinical and Experimental Medicine, Lung Transplant Unit, KU Leuven, Leuven, Belgium
| | - Geert M Verleden
- Department of Clinical and Experimental Medicine, Lung Transplant Unit, KU Leuven, Leuven, Belgium
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35
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Valenzuela NM, Reed EF. Antibody-mediated rejection across solid organ transplants: manifestations, mechanisms, and therapies. J Clin Invest 2017; 127:2492-2504. [PMID: 28604384 DOI: 10.1172/jci90597] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Solid organ transplantation is a curative therapy for hundreds of thousands of patients with end-stage organ failure. However, long-term outcomes have not improved, and nearly half of transplant recipients will lose their allografts by 10 years after transplant. One of the major challenges facing clinical transplantation is antibody-mediated rejection (AMR) caused by anti-donor HLA antibodies. AMR is highly associated with graft loss, but unfortunately there are few efficacious therapies to prevent and reverse AMR. This Review describes the clinical and histological manifestations of AMR, and discusses the immunopathological mechanisms contributing to antibody-mediated allograft injury as well as current and emerging therapies.
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36
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Singer JP, Katz PP, Soong A, Shrestha P, Huang D, Ho J, Mindo M, Greenland JR, Hays SR, Golden J, Kukreja J, Kleinhenz ME, Shah RJ, Blanc PD. Effect of Lung Transplantation on Health-Related Quality of Life in the Era of the Lung Allocation Score: A U.S. Prospective Cohort Study. Am J Transplant 2017; 17:1334-1345. [PMID: 27743488 PMCID: PMC6085872 DOI: 10.1111/ajt.14081] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 09/13/2016] [Accepted: 10/04/2016] [Indexed: 01/25/2023]
Abstract
Under the U.S. Lung Allocation Score (LAS) system, older and sicker patients are prioritized for lung transplantation (LT). The impact of these changes on health-related quality of life (HRQL) after transplant has not been determined. In a single-center prospective cohort study from 2010 to 2016, we assessed HRQL before and repeatedly after LT for up to 3 years using the SF12-Physical and Mental Health, the respiratory-specific Airway Questionnaire 20-Revised, and the Euroqol 5D/Visual Analog Scale utility measures by multivariate linear mixed models jointly modeled with death. We also tested changes in LT-Valued Life Activities disability, BMI, allograft function, and 6-min walk test exercise capacity as predictors of HRQL change. Among 211 initial participants (92% of those eligible), LT improved HRQL by all 5 measures (p < 0.05) and all but SF12-Mental Health improved by threefold or greater than the minimally clinically important difference. Compared to younger participants, those aged ≥65 improved less in SF12-Physical and Mental Health (p < 0.01). Improvements in disability accounted for much of the HRQL improvement. In the LAS era, LT affords meaningful and durable HRQL improvements, mediated by amelioration of disability. Identifying factors limiting HRQL improvement in selected subgroups, especially those aged ≥65, are needed to maximize the net benefits of LT.
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Affiliation(s)
- J P Singer
- Department of Medicine, University of California, San Francisco, CA
| | - P P Katz
- Department of Medicine, University of California, San Francisco, CA
| | - A Soong
- Department of Medicine, University of California, San Francisco, CA
| | - P Shrestha
- Department of Medicine, University of California, San Francisco, CA
| | - D Huang
- Department of Medicine, University of California, San Francisco, CA
| | - J Ho
- Department of Medicine, University of California, San Francisco, CA
| | - M Mindo
- Department of Medicine, University of California, San Francisco, CA
| | - J R Greenland
- Department of Medicine, University of California, San Francisco, CA
| | - S R Hays
- Department of Medicine, University of California, San Francisco, CA
| | - J Golden
- Department of Medicine, University of California, San Francisco, CA
| | - J Kukreja
- Department of Surgery, University of California, San Francisco, CA
| | - M E Kleinhenz
- Department of Medicine, University of California, San Francisco, CA
| | - R J Shah
- Department of Medicine, University of California, San Francisco, CA
| | - P D Blanc
- Department of Medicine, University of California, San Francisco, CA
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37
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Kuehnel M, Maegel L, Vogel-Claussen J, Robertus JL, Jonigk D. Airway remodelling in the transplanted lung. Cell Tissue Res 2016; 367:663-675. [PMID: 27837271 DOI: 10.1007/s00441-016-2529-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 10/12/2016] [Indexed: 12/22/2022]
Abstract
Following lung transplantation, fibrotic remodelling of the small airways has been recognized for almost 5 decades as the main correlate of chronic graft failure and a major obstacle to long-term survival. Mainly due to airway fibrosis, pulmonary allografts currently show the highest attrition rate of all solid organ transplants, with a 5-year survival rate of 58 % on a worldwide scale. The observation that these morphological changes are not just the hallmark of chronic rejection but rather represent a manifestation of a multitude of alloimmune-dependent and -independent injuries was made more recently, as was the discovery that chronic lung allograft dysfunction manifests in different clinical phenotypes of respiratory impairment and corresponding morphological subentities. Although recent years have seen considerable advances in identifying and categorizing these subgroups on the basis of clinical, functional and histomorphological changes, as well as susceptibility to medicinal treatment, this process is far from over. Since the actual pathophysiological mechanisms governing airway remodelling are still only poorly understood, diagnosis and therapy of chronic lung allograft dysfunction presents a major challenge to clinicians, radiologists and pathologists alike. Here, we review and discuss the current state of the literature on chronic lung allograft dysfunction and shed light on classification systems, corresponding clinical and morphological changes, key cellular players and underlying molecular pathways, as well as on emerging diagnostic and therapeutic approaches.
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Affiliation(s)
- Mark Kuehnel
- Institute of Pathology, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, D-30625, Hanover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), The German Center for Lung Research (Deutsches Zentrum für Lungenforschung, DZL), Hanover, Germany
| | - Lavinia Maegel
- Institute of Pathology, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, D-30625, Hanover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease (BREATH), The German Center for Lung Research (Deutsches Zentrum für Lungenforschung, DZL), Hanover, Germany
| | | | - Jan Lukas Robertus
- Royal Brompton & Harefield NHS Foundation Trust, Department of Histopathology, Hanover, Germany
| | - Danny Jonigk
- Institute of Pathology, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, D-30625, Hanover, Germany.
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