1
|
Mora-Cuesta VM, Martínez-Meñaca A, González-Fernández Á, Iturbe-Fernández D, Tello-Mena S, Izquierdo-Cuervo S, Fernández-Rozas S, Alonso-Lecue P, Cifrián-Martínez JM. The impact of time from ILD diagnosis to referral to the transplant center on the probability of inclusion in the transplant waiting list. Heart Lung 2024; 67:92-99. [PMID: 38735159 DOI: 10.1016/j.hrtlng.2024.04.022] [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: 02/05/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/14/2024]
Abstract
BACKGROUND Lung transplant is a therapeutic option for patients with progressive interstitial lung disease (ILD). OBJECTIVES The objective of this study was to determine whether time from ILD diagnosis to referral to a transplant center influences the probability of being included in the transplant waiting list. METHODS We performed a retrospective cohort study including all ILD patients evaluated as lung transplantation (LT) candidates at a lung transplant center between 01/01/2017 and 31/12/2022. The primary endpoint was the probability of being included in the lung transplant waiting list according to the time elapsed from diagnosis to referral to the transplant center. RESULTS A total of 843 lung transplant requests were received, of which 367 (43.5%) were associated with ILD. Thirteen patients were excluded because they did not attend the first visit, whereas another 11 were excluded because some information was missing. As a result, our final sample was composed of 343 patients. The median time from diagnosis to referral was 29.4 (10.9 - 61.1) months. The overall probability of inclusion in the waiting list was 29.7%. By time from diagnosis to referral, the probability of inclusion in the waiting list was 48.1% for the patients referred 〈 6 months from diagnosis; 27.5% for patients referred 6 to 24 months from diagnosis; and 25.8% for patients referred 〉 24 months from diagnosis (p = 0.007). CONCLUSIONS Early referral to a lung transplant center seemed to increase the probability of being included in the lung transplant waiting list. Further research is needed in this topic.
Collapse
Affiliation(s)
- Víctor M Mora-Cuesta
- Respiratory Department, Lung Transplant Unit, ERN-LUNG (European Reference Network on Rare Respiratory Diseases), Marqués de Valdecilla University Hospital, Avda. Valdecilla s/n. 39008, Santander, Spain.
| | - Amaya Martínez-Meñaca
- Respiratory Department. ERN-LUNG (European Reference Network on Rare Respiratory Diseases), Marqués de Valdecilla University Hospital, Spain
| | | | - David Iturbe-Fernández
- Respiratory Department, Lung Transplant Unit, ERN-LUNG (European Reference Network on Rare Respiratory Diseases), Marqués de Valdecilla University Hospital, Avda. Valdecilla s/n. 39008, Santander, Spain
| | - Sandra Tello-Mena
- Respiratory Department, Lung Transplant Unit, ERN-LUNG (European Reference Network on Rare Respiratory Diseases), Marqués de Valdecilla University Hospital, Avda. Valdecilla s/n. 39008, Santander, Spain
| | - Sheila Izquierdo-Cuervo
- Respiratory Department, Lung Transplant Unit, ERN-LUNG (European Reference Network on Rare Respiratory Diseases), Marqués de Valdecilla University Hospital, Avda. Valdecilla s/n. 39008, Santander, Spain
| | - Sonia Fernández-Rozas
- Respiratory Department. ERN-LUNG (European Reference Network on Rare Respiratory Diseases), Marqués de Valdecilla University Hospital, Spain
| | | | - José M Cifrián-Martínez
- Respiratory Department, Lung Transplant Unit, ERN-LUNG (European Reference Network on Rare Respiratory Diseases), Marqués de Valdecilla University Hospital, Avda. Valdecilla s/n. 39008, Santander, Spain
| |
Collapse
|
2
|
Bayomy OF, Bradford MC, Milinic T, Kapnadak SG, Morrell ED, Lease ED, Goss CH, Ramos KJ. Lung Allocation Score Exceptions in Persons with Cystic Fibrosis Undergoing Lung Transplant. Ann Am Thorac Soc 2024; 21:271-278. [PMID: 37878995 PMCID: PMC10848912 DOI: 10.1513/annalsats.202306-509oc] [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: 06/03/2023] [Accepted: 10/25/2023] [Indexed: 10/27/2023] Open
Abstract
Rationale: Lung transplantation can extend the lives of individuals with advanced cystic fibrosis (CF). Until March 2023, the Lung Allocation Score (LAS) was used in the United States to determine transplant priority. Certain clinical events or attributes ("risk events") that are not included in the LAS (e.g., massive hemoptysis) are relatively common and prognostically important in CF and may prompt an exception request to increase priority for donor lungs. The new Lung Composite Allocation Score (CAS) also allows for exceptions based on the same principles. Objectives: To evaluate the frequency of LAS exceptions in persons with CF (PwCFs) listed for lung transplantation and assess whether LAS exceptions are associated with improved waitlist outcomes for PwCFs compared with similarly "at-risk" individuals without LAS exceptions. Methods: A merged dataset combining data from the CF Foundation Patient Registry and the Organ Procurement and Transplantation Network (2005-2019) was used to identify PwCFs listed for lung transplantation. We compared waitlist outcomes between PwCFs with a LAS exception versus those without an exception despite having a risk event. Risk events were defined as an episode of massive hemoptysis, pneumothorax, at least three moderate/severe pulmonary exacerbations, and/or a decrease in forced expiratory volume in 1 second by ⩾30% predicted (absolute) in the prior 12 months. Analyses were performed using competing risk regression with time to transplantation as the primary outcome and death without a transplant as a competing risk. Results: Of 3,538 listings from 3,309 candidates, 2% of listings (n = 81) had at least one exception. Candidates with an exception and those with a risk event but no exception received lung transplants more slowly than people without an exception or risk event (subdistribution hazard ratio [95% confidence interval]: LAS exception cohort, 0.66 [0.52-0.85]; risk event cohort without exceptions, 0.79 [0.72-0.86]). There was no difference between those with LAS exceptions and those at risk without LAS exceptions: subdistribution hazard ratio, 0.84 (0.66-1.08). Conclusions: LAS exceptions are rare in PwCFs listed for lung transplantation. LAS exceptions resulted in a similar time to transplantation for PwCFs compared with similarly at-risk individuals. As we enter the CAS era, these LAS-based results are pertinent to improve risk stratification among PwCFs being considered for lung transplantation.
Collapse
Affiliation(s)
- Omar F. Bayomy
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, and
| | - Miranda C. Bradford
- Core for Biostatistics, Epidemiology and Analytics in Research, Seattle Children’s Research Institute, Seattle, Washington
| | - Tijana Milinic
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, and
| | | | - Eric D. Morrell
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, and
| | - Erika D. Lease
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, and
| | - Christopher H. Goss
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, and
- Division of Pulmonary Medicine, Department of Pediatrics, University of Washington, Seattle, Washington; and
| | - Kathleen J. Ramos
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, and
| |
Collapse
|
3
|
Reed RD, Locke JE. Mitigating Health Disparities in Transplantation Requires Equity, Not Equality. Transplantation 2024; 108:100-114. [PMID: 38098158 PMCID: PMC10796154 DOI: 10.1097/tp.0000000000004630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Despite decades of research and evidence-based mitigation strategies, disparities in access to transplantation persist for all organ types and in all stages of the transplant process. Although some strategies have shown promise for alleviating disparities, others have fallen short of the equity goal by providing the same tools and resources to all rather than tailoring the tools and resources to one's circumstances. Innovative solutions that engage all stakeholders are needed to achieve equity regardless of race, sex, age, socioeconomic status, or geography. Mitigation of disparities is paramount to ensure fair and equitable access for those with end-stage disease and to preserve the trust of the public, upon whom we rely for their willingness to donate organs. In this overview, we present a summary of recent literature demonstrating persistent disparities by stage in the transplant process, along with policies and interventions that have been implemented to combat these disparities and hypotheses for why some strategies have been more effective than others. We conclude with future directions that have been proposed by experts in the field and how these suggested strategies may help us finally arrive at equity in transplantation.
Collapse
Affiliation(s)
- Rhiannon D. Reed
- Comprehensive Transplant Institute, University of Alabama at Birmingham, Birmingham, AL
| | - Jayme E. Locke
- Comprehensive Transplant Institute, University of Alabama at Birmingham, Birmingham, AL
| |
Collapse
|
4
|
Oates GR, Schechter MS. Aiming to Improve Equity in Pulmonary Health: Cystic Fibrosis. Clin Chest Med 2023; 44:555-573. [PMID: 37517835 PMCID: PMC10458995 DOI: 10.1016/j.ccm.2023.03.011] [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] [Indexed: 08/01/2023]
Abstract
This review summarizes the evidence of health disparities in cystic fibrosis (CF), an autosomal recessive genetic disorder with substantial variation in disease progression and outcomes. We review disparities by race, ethnicity, socioeconomic status, geographic location, gender identity, or sexual orientation documented in the literature. We outline the mechanisms that generate and perpetuate such disparities across levels and domains of influence and assess the implications of this evidence. We then recommend strategies for improving equity in CF outcomes, drawing on recommendations for the general population and considering approaches specific to people living with CF.
Collapse
Affiliation(s)
- Gabriela R Oates
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Michael S Schechter
- Division of Pulmonary Medicine, Department of Pediatrics, Virginia Commonwealth University and Children's Hospital of Richmond at VCU, Richmond, VA, USA
| |
Collapse
|
5
|
Calhoun K, Smith J, Gray AL. Social and biologic determinants in lung transplant allocation. Curr Opin Organ Transplant 2023; 28:163-167. [PMID: 37073809 DOI: 10.1097/mot.0000000000001069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
PURPOSE OF REVIEW Lung transplant is a life-saving intervention for many with end-stage lung disease. As usable donor lungs are a limited resource and the risk of death on the waitlist is not uniform among candidates, organ allocation must consider many variables in order to be equitable. RECENT FINDINGS The lung allocation score (LAS) system, implemented in 2005, accounted for disease severity, risk of death without transplant, and 1-year survival estimates; however, recipient size, allosensitization, and blood type, biologic features that influence donor pool for a given recipient, do not impact allocation priority. Additionally, social determinants such as geography, socioeconomic status, race, and ethnicity can impact the likelihood of receiving a transplant. This has resulted in certain groups being transplanted at lower rates and at higher risk of dying on the waitlist. In order to address these disparities, lung organ allocation in the United States transitioned to a continuous distribution system using the composite allocation score (CAS) on 9 March 2023. SUMMARY In this article, we will review some of the data demonstrating the impact that biologic and social determinants have had on lung allocation in order to provide background as to why these have been incorporated into the CAS.
Collapse
Affiliation(s)
- Kara Calhoun
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado School of Medicine, Denver, Colorado, USA
| | | | | |
Collapse
|
6
|
Hadjiliadis D, Valapour M, Chaparro C, Cypel M, Cooper JD. The 49th parallel: Does geographic position affect longevity of patients with cystic fibrosis? J Thorac Cardiovasc Surg 2023; 165:1604-1607. [PMID: 35365362 DOI: 10.1016/j.jtcvs.2022.01.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/04/2021] [Accepted: 01/23/2022] [Indexed: 11/25/2022]
Affiliation(s)
- Denis Hadjiliadis
- Division of Pulmonary, Allergy and Critical Care, University of Pennsylvania, Philadelphia, Pa
| | | | - Cecilia Chaparro
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Marcelo Cypel
- Department of Thoracic Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Joel D Cooper
- Division of Thoracic Surgery, School of Medicine, University of Pennsylvania, Philadelphia, Pa.
| |
Collapse
|
7
|
Swaminathan AC, McConnell A, Peskoe S, Bashir MR, Buckley EB, Frankel C, Turner D, Smith P, Zaffiri L, Singer LG, Snyder LD. Evaluation of Frailty Measures and Short-term Outcomes After Lung Transplantation. Chest 2023:S0012-3692(23)00121-6. [PMID: 36681147 DOI: 10.1016/j.chest.2023.01.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 12/28/2022] [Accepted: 01/10/2023] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Frailty, measured as a single construct, is associated variably with poor outcomes before and after lung transplantation. The usefulness of a comprehensive frailty assessment before transplantation is unknown. RESEARCH QUESTION How are multiple frailty constructs, including phenotypic and cumulative deficit models, muscle mass, exercise tolerance, and social vulnerabilities, measured before transplantation, associated with short-term outcomes after lung transplantation? STUDY DESIGN AND METHODS We conducted a retrospective cohort study of 515 lung recipients who underwent frailty assessments before transplantation, including the short physical performance battery (SPPB), transplant-specific frailty index (FI), 6-min walk distance (6MWD), thoracic sarcopenia, and social vulnerability indexes. We tested the association between frailty measures before transplantation and outcomes after transplantation using logistic regression to model 1-year survival and zero-inflated negative binomial regression to model hospital-free days (HFDs) in the first 90 days after transplantation. Adjustment covariates included age, sex, native lung disease, transplantation type, lung allocation score, BMI, and primary graft dysfunction. RESULTS Before transplantation, 51.3% of patients were frail by FI (FI ≥ 0.25) and no patients were frail by SPPB. In multivariate adjusted models that also included FI, SPPB, and 6MWD, greater frailty by FI, but not SPPB, was associated with fewer HFDs (-0.006 per 0.01 unit worsening; 95% CI, -0.01 to -0.002 per 0.01 unit worsening) among discharged patients. Greater SPPB deficits were associated with decreased odds of 1-year survival (OR, 0.51 per 1 unit worsening; 95% CI, 0.28-0.93 per 1 unit worsening). Correlation among frailty measurements overall was poor. No association was found between thoracic sarcopenia, 6MWD, or social vulnerability assessments and short-term outcomes after lung transplantation. INTERPRETATION Both phenotypic and cumulative deficit models measured before transplantation are associated with short-term outcomes after lung transplantation. Cumulative deficit measures of frailty may be more relevant in the first 90 days after transplantation, whereas phenotypic frailty may have a stronger association with 1-year survival.
Collapse
Affiliation(s)
- Aparna C Swaminathan
- Department of Medicine, Duke University School of Medicine, Durham, NC, Canada; Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, Canada.
| | - Alec McConnell
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC, Canada
| | - Sarah Peskoe
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC, Canada
| | - Mustafa R Bashir
- Department of Radiology, Duke University School of Medicine, Durham, NC, Canada
| | - Erika Bush Buckley
- Department of Medicine, Duke University School of Medicine, Durham, NC, Canada
| | - Courtney Frankel
- Department of Medicine, Duke University School of Medicine, Durham, NC, Canada
| | - Daniel Turner
- Department of Medicine, Duke University School of Medicine, Durham, NC, Canada
| | - Patrick Smith
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, Canada
| | - Lorenzo Zaffiri
- Department of Medicine, Duke University School of Medicine, Durham, NC, Canada
| | - Lianne G Singer
- Division of Respirology, Department of Medicine, University Health Network and University of Toronto, Toronto, ON, Canada
| | - Laurie D Snyder
- Department of Medicine, Duke University School of Medicine, Durham, NC, Canada; Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, Canada
| |
Collapse
|
8
|
Oates GR, Schechter MS. Socioeconomic determinants of respiratory health in patients with cystic fibrosis: implications for treatment strategies. Expert Rev Respir Med 2022; 16:637-650. [PMID: 35705523 DOI: 10.1080/17476348.2022.2090928] [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: 11/04/2022]
Abstract
INTRODUCTION Great variation exists in the progression and outcomes of cystic fibrosis (CF) lung disease, due to both genetic and environmental influences. Social determinants mediate environmental exposures and treatment success; people with CF from socioeconomically disadvantaged backgrounds have worse health and die younger than those in more advantaged positions. AREAS COVERED This paper reviews the literature on the mechanisms that are responsible for generating and sustaining disparities in CF health, and the ways by which social determinants translate into health advantages or disadvantages in people with CF. The authors make recommendations for addressing social risk factors in CF clinical practice. EXPERT OPINION Socioeconomic factors are not dichotomous and their impact is felt at every step of the social ladder. CF care programs need to adopt a systematic protocol to screen for health-related social risk factors, and then connect patients to available resources to meet individual needs. Considerations such as daycare, schooling options, living and working conditions, and opportunities for physical exercise and recreation as well as promotion of self-efficacy are often overlooked. In addition, advocacy for changes in public policies on health insurance, environmental regulations, social welfare, and education would all help address the root causes of CF health inequities.
Collapse
Affiliation(s)
- Gabriela R Oates
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Michael S Schechter
- Division of Pulmonary Medicine, Department of Pediatrics, Virginia Commonwealth University and Children's Hospital of Richmond at VCU, USA
| |
Collapse
|
9
|
Disparities in Lung Transplant among Patients with Idiopathic Pulmonary Fibrosis: An Analysis of the IPF-PRO Registry. Ann Am Thorac Soc 2022; 19:981-990. [PMID: 35073248 PMCID: PMC9169123 DOI: 10.1513/annalsats.202105-589oc] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Rationale: Lung transplant offers the potential to extend life for patients with idiopathic pulmonary fibrosis (IPF); yet, this therapeutic modality is only available to a small proportion of patients. Objectives: To identify clinical characteristics and social determinants of health that differentially associate with lung transplant compared with death in patients with IPF. Methods: We evaluated data from the Idiopathic Pulmonary Fibrosis Prospective Outcomes (IPF-PRO) Registry, a multicenter U.S. registry of patients with IPF that was diagnosed or confirmed at the enrolling center in the previous 6 months. Patients were enrolled between June 2014 and October 2018. Patients who were listed for lung transplant were not eligible to enroll in the registry, but patients could be listed for transplant after enrollment. We performed a multivariable time-to-event analysis incorporating competing risks methodology to examine differential associations between prespecified covariates and the risk of lung transplant versus death. Covariates included factors related to lung transplant eligibility, clinical characteristics of IPF, and social determinants of health. Covariates were modeled as time independent or time dependent as appropriate. Results: Among 955 patients with IPF, event rates of lung transplant and death were 7.4% and 16.3%, respectively, at 2 years. Covariates with the strongest differential association were age, median zip code income, and enrollment at a center with a lung transplant program. Lung transplant was less likely (hazard ratio [HR], 0.13 [95% confidence interval (CI), 0.06-0.28] per 5-yr increase) and death more likely (HR, 1.41 [95% CI, 1.22-1.64] per 5-yr increase) among those older than 70 years of age. Higher median zip code income was associated with lung transplant (HR, 1.22 [95% CI, 1.13-1.31] per $10,000 increase) but not death (HR, 0.99 [95% CI, 0.94-1.04] per $10,000 increase). Enrollment at a center with a lung transplant program was associated with lung transplant (HR, 4.31 [95% CI, 1.76-10.54]) but not death (HR, 0.99 [95% CI, 0.69-1.43]). Oxygen use with activity was associated with both lung transplant and death, but more strongly with lung transplant. A higher number of comorbidities was associated with an increased likelihood of death but not lung transplant. Conclusions: For patients in the Idiopathic Pulmonary Fibrosis Prospective Outcomes Registry, median zip code income and access to a lung transplant center differentially impact the risk of lung transplant compared with death, regardless of disease severity measures or other transplant eligibility factors. Interventions are needed to mitigate inequalities in lung transplantation based on socioeconomic status. Clinical trial registered with www.clinicaltrials.gov (NCT01915511).
Collapse
|
10
|
Christon LM, Smith PJ. Psychosocial Evaluation for Lung Transplantation: an Empirically Informed Update. CURRENT TRANSPLANTATION REPORTS 2022. [DOI: 10.1007/s40472-022-00360-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Cystic fibrosis: candidate selection and impact of the cystic fibrosis transmembrane conductance regulator therapy. Curr Opin Organ Transplant 2022; 27:198-203. [PMID: 35184094 DOI: 10.1097/mot.0000000000000975] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Over the past decade, the development of highly effective cystic fibrosis (CF) transmembrane conductance regulator (CFTR) modulators has dramatically ameliorated the manifestations of CF for most patients. Perhaps most importantly, CFTR modulators impact the development and progression of advanced lung disease (ALD) and are changing the CF population accessing lung transplant. RECENT FINDINGS A recent phase 3 trial of elexacaftor/tezacaftor/ivacaftor (ETI) demonstrated efficacy for individuals with at least one copy of the most common CF mutation, F508del. Studies of CFTR modulator therapy in patients with ALD have demonstrated similar improvements in lung function, nutrition, and pulmonary exacerbation frequency as seen in individuals with higher lung function. Due to improvements with ETI, rates of lung transplant for CF have declined and individuals are achieving stability in lung function. Nevertheless, the Cystic Fibrosis Foundation guidelines for lung transplant referral should be used to guide referral decisions for all individuals with CF, including those on CFTR modulator therapy, to allow remediation of modifiable barriers to transplant. ETI may be used in the posttransplant setting but for selected individuals and with close monitoring. SUMMARY Increasing access to highly effective CFTR modulators has changed the trajectory of lung disease in CF for many, but not all, individuals and there remain individuals who cannot access therapy or whose mutations do not respond to modulators. Lung transplant remains an important treatment option for individuals with advanced CF lung disease. Increasing attention will be required to optimize decisions of when to list for transplant.
Collapse
|
12
|
Gaffney AW, Podolanczuk AJ. Inequity and the Interstitium: Pushing Back on Disparities in Fibrosing Lung Disease in the United States and Canada. Am J Respir Crit Care Med 2022; 205:385-387. [PMID: 35007493 PMCID: PMC8886941 DOI: 10.1164/rccm.202111-2652ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Adam W Gaffney
- Harvard Medical School Boston, Massachusetts
- Division of Pulmonary and Critical Care Medicine Cambridge Health Alliance Cambridge, Massachusetts
| | - Anna J Podolanczuk
- Division of Pulmonary and Critical Care Medicine Weill Cornell Medical College New York, New York
| |
Collapse
|
13
|
Ramos KJ, Sykes J, Stanojevic S, Ma X, Ostrenga JS, Fink A, Quon BS, Marshall BC, Faro A, Petren K, Elbert A, Goss CH, Stephenson AL. Survival and Lung Transplant Outcomes for Individuals With Advanced Cystic Fibrosis Lung Disease Living in the United States and Canada: An Analysis of National Registries. Chest 2021; 160:843-853. [PMID: 33878343 DOI: 10.1016/j.chest.2021.04.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 04/02/2021] [Accepted: 04/02/2021] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND Understanding how health outcomes differ for patients with advanced cystic fibrosis (CF) lung disease living in the United States compared with Canada has health policy implications. RESEARCH QUESTION What are rates of lung transplant (LTx) and rates of death without LTx in the United States and Canada among individuals with FEV1 < 40% predicted? STUDY DESIGN AND METHODS This was a retrospective population-based cohort study, 2005 to 2016, using the US CF Foundation, United Network for Organ Sharing, and Canadian CF registries. Individuals with CF and at least two FEV1 measurements < 40% predicted within a 5-year period, age ≥ 6 years, without prior LTx were included. Multivariable competing risk regression for time to death without LTx (LTx as a competing risk) and time to LTx (death as a competing risk) was performed. RESULTS There were 5,899 patients (53% male) and 905 patients (54% male) with CF with FEV1 < 40% predicted living in the United States and Canada, respectively. Multivariable competing risk regression models identified an increased risk of death without LTx (hazard ratio [HR], 1.79; 95% CI, 1.52-2.1) and decreased LTx (HR, 0.66; 95% CI, 0.58-0.74) among individuals in the United States compared with Canada. More pronounced differences were seen in the patients in the United States with Medicaid/Medicare insurance compared with Canadians (multivariable HR for death without LTx, 2.24 [95% CI, 1.89-2.64]; multivariable HR for LTx, 0.54 [95% CI, 0.47-0.61]). Patients of nonwhite race were also disadvantaged (multivariable HR for death without LTx, 1.56 [95% CI, 1.32-1.84]; multivariable HR for LTx, 0.47 [95% CI, 0.36-0.62]). INTERPRETATION There are lower rates of LTx and an increased risk of death without LTx for US patients with CF with FEV1 < 40% predicted compared with Canadian patients. Findings are more striking among US patients with CF with Medicaid/Medicare health insurance, and nonwhite patients in both countries, raising concerns about underuse of LTx among vulnerable populations.
Collapse
Affiliation(s)
- Kathleen J Ramos
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA.
| | - Jenna Sykes
- Division of Respirology, St. Michael's Hospital, Toronto, ON, Canada
| | - Sanja Stanojevic
- Translational Medicine, Hospital for Sick Children, Toronto, ON, Canada
| | - Xiayi Ma
- Division of Respirology, St. Michael's Hospital, Toronto, ON, Canada
| | | | - Aliza Fink
- Cystic Fibrosis Foundation, Bethesda, MD
| | - Bradley S Quon
- Division of Respirology, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | | | | | | | | | - Christopher H Goss
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA; Division of Pulmonary and Sleep Medicine, Department of Pediatrics, University of Washington, Seattle, WA
| | - Anne L Stephenson
- Division of Respirology, St. Michael's Hospital, Toronto, ON, Canada; Keenan Research Centre, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, ON, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
14
|
Affiliation(s)
- Gabriela R Oates
- Pulmonary and Sleep Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - Michael S Schechter
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Hospital of Richmond at VCU, Virginia Commonwealth University, Richmond, Virginia
| |
Collapse
|
15
|
|
16
|
Mitigating the Impact of Socioeconomic Status on Listing for Lung Transplantation in Cystic Fibrosis. Ann Am Thorac Soc 2020; 17:1374-1375. [PMID: 33124911 PMCID: PMC7640733 DOI: 10.1513/annalsats.202007-905ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|