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Aitken A, Lavery J. The specialist community practitioner district nurse's role in optimising COPD. Br J Community Nurs 2024; 29:275-281. [PMID: 38814840 DOI: 10.12968/bjcn.2024.29.6.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Chronic obstructive pulmonary disease (COPD) is a long-term condition affecting all aspects of an individual's life. Specialist Community practitioner district nurses (SCPDN) manage patients with multiple co morbidities on their caseload, and as such require an extensive clinical knowledge base. COPD is a highly prevalent and complex disease; therefore, individualised holistic assessments are required to ensure patients receive personalised and evidence-based care. Care delivery must include an awareness of health interventions encompassing, screening, health promotion and prevention. The SCPDN's consideration of the physical, mental and social determinants which adversely affect the health of the individual with COPD is imperative to deliver high quality care to the individuals, families and communities.
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Affiliation(s)
| | - Joanna Lavery
- Senior Lecturer, Postgraduate Nursing and Advanced Practice, Liverpool John Moores University
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2
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Barrecheguren M, Hidalgo PP, Gonçalves JMF, de Miguel Díez J. Diagnosis of Alpha-1 Antitrypsin Deficiency (AATD) in Primary Care. OPEN RESPIRATORY ARCHIVES 2024; 6:100310. [PMID: 38560506 PMCID: PMC10981108 DOI: 10.1016/j.opresp.2024.100310] [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: 04/04/2024] Open
Affiliation(s)
- Miriam Barrecheguren
- Servicio de Neumología, Hospital Vall d’Hebron, Barcelona, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | | | - Juan Marco Figueira Gonçalves
- Respiratory Department, Research Unit, University Hospital Nuestra Señora de Candelaria, Tenerife, Spain
- Canary Tropical Disease and Public Health Institute, La Laguna University, La Laguna, Spain
| | - Javier de Miguel Díez
- Servicio de Neumología, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Universidad Complutense de Madrid, Madrid, Spain
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Schumacher RC, Chiu CY, Lubarda J, Aboulsaoud P, Bomberger J, Wells JM. A Novel Provider Education Module to Enhance Detection of Alpha-1 Antitrypsin Deficiency. ATS Sch 2023; 4:490-501. [PMID: 38196685 PMCID: PMC10773490 DOI: 10.34197/ats-scholar.2023-0028oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 06/22/2023] [Indexed: 01/11/2024] Open
Abstract
Background Alpha-1 antitrypsin deficiency (AATD) is the most common genetic risk factor for early-onset emphysema. However, AATD continues to be underrecognized and underdiagnosed. Provider awareness about AATD, concerns with testing costs, and limited understanding about therapeutic options contribute to its underdiagnosis. We hypothesized that provider education would improve awareness of AATD and improve screening. Objective To evaluate the impact of a targeted provider education module on AATD screening. Methods We developed a web-based education module to address barriers to screening for AATD, deployed the education module using the Medscape Education platform, assessed perceived healthcare provider confidence in AATD screening, and conducted a prospective pre and postintervention study of AATD testing practices at a high-volume academic outpatient subspecialty pulmonary clinic. Results A total of 11,385 healthcare providers, including eight pulmonologists at our institution, completed the web-based education module. Confidence in identifying patients at high risk for AATD improved after completing the module ("not confident" in AATD screening was 7.7% postintervention compared with 19.4% preintervention). The rate of screening patients at high risk for AATD improved more than twofold (AATD screening rate 9.7% preintervention vs. 20.4% postintervention; P = 0.004). Among patients screened for AATD in our cohort, 27.2% had a genotype/phenotype or low alpha-1 antitrypsin concentration consistent with AATD. Conclusion Targeted healthcare provider education can improve the confidence in testing for AATD. Improvements in provider confidence corresponded to improvements in AATD screening in a subspecialty pulmonary clinic. More than one-fourth of screening tests suggested AATD, underpinning the value of testing in high-risk individuals.
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Affiliation(s)
- Ross C. Schumacher
- Division of Pulmonary, Allergy, and
Critical Care Medicine, Department of Medicine, and
- Lung Health Center, University of Alabama
at Birmingham, Birmingham, Alabama
| | - Chia-Ying Chiu
- Division of Pulmonary, Allergy, and
Critical Care Medicine, Department of Medicine, and
- Lung Health Center, University of Alabama
at Birmingham, Birmingham, Alabama
| | | | | | | | - J. Michael Wells
- Division of Pulmonary, Allergy, and
Critical Care Medicine, Department of Medicine, and
- Lung Health Center, University of Alabama
at Birmingham, Birmingham, Alabama
- Birmingham Veterans Affairs Healthcare
System, Birmingham, Alabama
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4
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Riley L, Sriram A, Brantly M, Lascano J. Testing Patterns and Disparities for Alpha-1 Antitrypsin Deficiency. Am J Med 2023; 136:1011-1017. [PMID: 37451388 DOI: 10.1016/j.amjmed.2023.06.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 04/06/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Alpha-1 antitrypsin deficiency is an under-recognized genetic cause of chronic lung and liver disease; it remains unclear what the testing frequency and disparities are for alpha-1 antitrypsin deficiency. METHODS This is a retrospective cohort study of people with newly diagnosed chronic obstructive pulmonary disease and liver disease identified at the University of Florida between January 1, 2012 and December 31, 2021. We performed incidence and prevalence analysis for alpha-1 antitrypsin (AAT) testing and point-biserial correlation analysis for tobacco use and AAT testing. We evaluated characteristics with AAT testing using adjusted multivariable logistic regression. RESULTS Among 75,810 subjects with newly diagnosed chronic obstructive pulmonary disease and liver disease between 2012 and 2021, 4248 (5.6%) were tested for AAT deficiency. All subjects had an AAT level performed, while 1654 (39%) had phenotype testing. Annual incidence of testing increased for subjects with newly diagnosed chronic obstructive pulmonary disease or liver disease from 2.8% and 5.4%, respectively, in 2012 to 4.1% and 11.3%, respectively, in 2021. Adjusted multivariable regression analysis showed factors favoring AAT testing were White race, and concomitant chronic obstructive pulmonary disease and liver disease. Increasing age, non-White race, current tobacco use, and being a male with chronic obstructive pulmonary disease had lower odds of AAT testing. CONCLUSION Although slowly improving, testing for AAT deficiency continues to have a low uptake in the clinical setting despite guidelines recommending broader testing. Individuals of White race and those with concomitant chronic obstructive pulmonary disease and liver disease are more likely to be tested, while older subjects, individuals of non-White race, current tobacco use, and men with chronic obstructive pulmonary disease are less favored to be tested.
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Affiliation(s)
- Leonard Riley
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, Kansas City Veterans Affairs Medical Center, Mo.
| | | | - Mark Brantly
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville
| | - Jorge Lascano
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville
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Riley EL, Brunson JC, Eydgahi S, Brantly ML, Lascano JE. Development of a risk score to increase detection of severe alpha-1 antitrypsin deficiency. ERJ Open Res 2023; 9:00302-2023. [PMID: 37727673 PMCID: PMC10505949 DOI: 10.1183/23120541.00302-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 06/20/2023] [Indexed: 09/21/2023] Open
Abstract
Background Alpha-1 antitrypsin deficiency (AATD) is an under-recognised genetic cause of chronic obstructive lung disease, and many fewer cases than estimated have been identified. Can a reported respiratory and hepatic disease history from a large AATD testing database be used to stratify a person's risk of severe AATD? Methods We analysed data extracted from the AATD National Detection Program. Demographics and medical history were evaluated to predict AATD PI*ZZ genotype. Logistic regression and integer programming models identified predictors and obtained risk scores. These were internally validated on a subset of the data. Results Out of 301 343 subjects, 1529 (0.5%) had PI*ZZ genotype. Predictors of severe AATD were asthma, bronchitis, emphysema, allergies, bronchiectasis, family history of AATD, cirrhosis, hepatitis and history of abnormal liver function tests. The derived model establishes a subject's risk of severe AATD, and scores ≥0 had an estimated risk of 0.41%, sensitivity 84.62% and specificity 24.32%. A model simulating guideline recommendations had an estimated risk of 0.51% with a sensitivity of 37.98% and specificity 46.60%. By recommending screening for scores ≥0, we estimate that more subjects would be screened (75.7% versus 53.4%) and detected (84.6% versus 58.2%) compared to a guideline-simulated model. Conclusion This medical history risk model is a useful predictive tool to detect subjects at greater risk of having severe AATD and improves sensitivity of detection. Scores <0 are at lower risk and may need not be screened; testing is recommended for scores ≥0 and consistent with current guidelines.
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Affiliation(s)
- E. Leonard Riley
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, Kansas City Veterans Affairs Medical Center, Kansas City, MO, USA
| | - J. Cory Brunson
- Laboratory for Systems Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Soroush Eydgahi
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Mark L. Brantly
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - Jorge E. Lascano
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Florida College of Medicine, Gainesville, FL, USA
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Campos M, Hagenlocker B, Lascano J, Riley L. Impact of a Computerized Clinical Decision Support System to Improve Chronic Obstructive Pulmonary Disease Diagnosis and Testing for Alpha-1 Antitrypsin Deficiency. Ann Am Thorac Soc 2023; 20:1116-1123. [PMID: 36989247 DOI: 10.1513/annalsats.202211-954oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 03/29/2023] [Indexed: 03/30/2023] Open
Abstract
Rationale: Chronic obstructive pulmonary disease (COPD) and alpha-1 antitrypsin deficiency (AATD) are underrecognized diseases. This is in part due to the underdiagnosis and lack of confirmation of COPD but also from poor adherence to AATD screening recommendations. Objectives: A clinical decision support system (CDSS) to guide primary care providers improves spirometry testing and confirmation of COPD diagnosis in subjects at risk and improves AATD screening in patients with confirmed COPD. Methods: A CDSS was created to be applied to all Veterans attending single-center Veterans Affairs primary care clinics. The CDSS had an algorithmic dialogue with components executed in phases during different clinic visits: screening for COPD risk using the COPD population screening (COPD-PS) questionnaire, spirometry recommendation, and ordering tool for subjects with a prior diagnosis of COPD or subjects considered high risk by the COPD-PS, dialogue to confirm or discard the diagnosis of COPD, and recommendations for AATD screening in subjects with confirmed COPD. The latter was performed by ordering alpha-1 antitrypsin (AAT) serum levels. Each step of the CDSS algorithm approach was recorded and available to be retrieved at a later date for analysis. Results: Over 6 years, a total of 6,235 Veterans >40 years of age completed the CDSS. According to the COPD-PS questionnaire, 962 (18.5%) subjects were identified as high risk for COPD. An additional 579 subjects with a prior diagnosis of COPD also entered the subsequent steps of the CDSS algorithm. Of the high-risk cohort, the CDSS led to an increase in spirometry testing from 24% to 83% and led to a new diagnosis of COPD in 342 (43%). In the prior COPD diagnosis group, spirometry testing increased from 58% to 84%, leading to COPD reconfirmation in only 326 (67%). A total of 489 (68%) subjects with confirmed COPD completed AAT testing prompted by the CDSS, with 23 subjects identified with AATD and one with severe AATD. Conclusions: In the Veterans Affairs system, the use of a clinical decision support system algorithm that incorporates screening for COPD and AATD improves COPD over- and underdiagnosis and screening rates of AATD in a primary care setting.
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Affiliation(s)
- Michael Campos
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Miami, Miami, Florida
- Pulmonary Section, Department of Medicine, and
| | - Brian Hagenlocker
- Department of Primary Care Medicine, Miami Veterans Affairs Medical Center, Miami, Florida
| | - Jorge Lascano
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of Florida, Gainesville, Florida; and
| | - Leonard Riley
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Kansas City Veterans Affairs Medical Center, Kansas City, Missouri
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Reinoso-Arija R, Proaño C, Ruiz-Serrano R, Núñez Ollero D, Ruiz-Duque B, Ortega Ruiz F, Márquez Martín E, Carrasco Hernández L, López-Campos JL. [Results of the Implementation of a Case-Finding Program for Alpha-1 Antitrypsin Deficiency in COPD Patients]. OPEN RESPIRATORY ARCHIVES 2023; 5:100251. [PMID: 37810428 PMCID: PMC10556779 DOI: 10.1016/j.opresp.2023.100251] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 05/12/2023] [Indexed: 10/10/2023] Open
Abstract
Objectives Currently, the identification of new cases of alpha-1 antitrypsin deficiency (AATD) continues to be one of the great challenges facing the disease. The present study aims to perform an analysis of the results of the implementation of a systematic case detection program of AATD for patients with chronic obstructive pulmonary disease. Material and methods Cross-sectional observational study in which the results of AAT screening until December 2022 were analyzed. The cases studied were divided into three periods: (1) no systematic case detection until 2013; (2) systematic case detection of S and Z alleles for cases with AAT < 90 mg/dL until 2018, and (3) systematic case detection of 14 mutations for cases with AAT < 120 mg/dL since 2018. Results A total of 471 cases were studied, of which 306 (65.0%) were carriers of some mutation related to HAD. The number of detected cases of all mutations with their percentage against those studied in each period was respectively: 6 (100%), 48 (88.8%) and 253 (61.5%). If we limit to severe mutations (AAT < 57.2 mg/dL), the distribution by periods was respectively: 3 (50.0), 10 (18.5%) and 17 (4.1%). Conclusions The present study describes the changes in the detection of patients carrying DAAT-related alleles with three different case identification policies. The data support the use of systematic case detection system in the COPD patient population.
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Affiliation(s)
- Rocío Reinoso-Arija
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
| | - Carmen Proaño
- Departamento de Medicina, Universidad de Sevilla, Sevilla, España
| | - Rosario Ruiz-Serrano
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
| | - Dolores Núñez Ollero
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
| | - Borja Ruiz-Duque
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
| | - Francisco Ortega Ruiz
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España
| | - Eduardo Márquez Martín
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España
| | - Laura Carrasco Hernández
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España
| | - José Luis López-Campos
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, España
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España
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Fang H, Liu Y, Yang Q, Han S, Zhang H. Prognostic Biomarkers Based on Proteomic Technology in COPD: A Recent Review. Int J Chron Obstruct Pulmon Dis 2023; 18:1353-1365. [PMID: 37408604 PMCID: PMC10319291 DOI: 10.2147/copd.s410387] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/25/2023] [Indexed: 07/07/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a common heterogeneous respiratory disease which is characterized by persistent and incompletely reversible airflow limitation. Due to the heterogeneity and phenotypic complexity of COPD, traditional diagnostic methods provide limited information and pose a great challenge to clinical management. In recent years, with the development of omics technologies, proteomics, metabolomics, transcriptomics, etc., have been widely used in the study of COPD, providing great help to discover new biomarkers and elucidate the complex mechanisms of COPD. In this review, we summarize the prognostic biomarkers of COPD based on proteomic studies in recent years and evaluate their association with COPD prognosis. Finally, we present the prospects and challenges of COPD prognostic-related studies. This review is expected to provide cutting-edge evidence in prognostic evaluation of clinical patients with COPD and to inform future proteomic studies on prognostic biomarkers of COPD.
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Affiliation(s)
- Hanyu Fang
- Beijing University of Chinese Medicine, Beijing, 100029, People’s Republic of China
| | - Ying Liu
- The Second Health and Medical Department, China-Japan Friendship Hospital, Beijing, 100029, People’s Republic of China
| | - Qiwen Yang
- Beijing University of Chinese Medicine, Beijing, 100029, People’s Republic of China
| | - Siyu Han
- Beijing University of Chinese Medicine, Beijing, 100029, People’s Republic of China
| | - Hongchun Zhang
- Beijing University of Chinese Medicine, Beijing, 100029, People’s Republic of China
- The Second Health and Medical Department, China-Japan Friendship Hospital, Beijing, 100029, People’s Republic of China
- Department of Traditional Chinese Medicine for Pulmonary Diseases, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, 100029, People’s Republic of China
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Newnham M, Quinn M, Turner AM. Estimating the Prevalence of AATD Patients in the UK to Identify Underdiagnosis and Determine the Eligibility for Potential Augmentation Therapy. Int J Chron Obstruct Pulmon Dis 2023; 18:1197-1205. [PMID: 37332838 PMCID: PMC10276585 DOI: 10.2147/copd.s395663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 05/13/2023] [Indexed: 06/20/2023] Open
Abstract
Purpose Alpha 1 antitrypsin deficiency (AATD) is a genetic risk factor for chronic obstructive pulmonary disease (COPD). Whilst testing for the condition is relatively simple, there is a disconnect in published literature between genetic epidemiology and numbers of patients known to specialists. This makes planning services for patients difficult. We aimed to estimate the number of patients likely to have lung disease eligible for specific AATD therapy within the UK. Patients and Methods The THIN database was used to determine the prevalence of AATD and symptomatic COPD. This, and published rates of AATD were used to extrapolate THIN data to the population size of the UK to give an indicative population size for symptomatic AATD patients who have lung disease. The Birmingham AATD registry was used to describe age at diagnosis, rate of lung disease and symptomatic lung disease for patients with PiZZ (or equivalent) AATD, together with the time from symptom onset to diagnosis, in order to aid interpretation of the THIN data and improve modeling. Results THIN data showed COPD prevalence of 3%, and AATD prevalence of 0.005-0.2%, depending on how stringently AATD diagnostic codes were applied. The majority of Birmingham AATD patients were diagnosed between the ages 46-55, whilst patients recorded in THIN tended to be older. The rate of COPD was similar in the THIN and Birmingham patients diagnosed with AATD. Modelling to the size of the UK demonstrated a likely symptomatic AATD population of between 3016 and 9866 people. Conclusion AATD is likely to be under-diagnosed in the UK. Based on projected patient numbers an expansion to specialist services is desirable, in particular if specific therapy for AATD such as augmentation were to be introduced to the healthcare system.
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Affiliation(s)
- Michael Newnham
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- University Hospitals Birmingham, Birmingham, UK
| | - Mark Quinn
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Alice M Turner
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
- University Hospitals Birmingham, Birmingham, UK
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Meischl T, Schmid-Scherzer K, Vafai-Tabrizi F, Wurzinger G, Traunmüller-Wurm E, Kutics K, Rauter M, Grabcanovic-Musija F, Müller S, Kaufmann N, Löffler-Ragg J, Valipour A, Funk GC. The impact of diagnostic delay on survival in alpha-1-antitrypsin deficiency: results from the Austrian Alpha-1 Lung Registry. Respir Res 2023; 24:34. [PMID: 36707810 PMCID: PMC9881325 DOI: 10.1186/s12931-023-02338-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 01/18/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Alpha-1-antitrypsin (AAT) deficiency (AATD) is a genetic disorder that can manifest as lung disease. A delay between onset of symptoms and diagnosis of AATD is common and associated with worse clinical status and more advanced disease stage but the influence on survival is unclear. OBJECTIVE We aimed to investigate the impact of diagnostic delay on overall survival (OS) and transplant-free survival (TS) in AATD patients. METHODS We analysed 268 AATD patients from the prospective multi-centre Austrian Alpha-1 Lung (AAL) Registry, employing descriptive statistics, Chi-square-test as well as univariable (Kaplan-Meier plots, log-rank test) and multivariable survival analysis (Cox regression). RESULTS The predominant phenotype was Pi*ZZ (82.1%). At diagnosis, 90.2% had an AAT level below 0.6 g/L. At inclusion, 28.2% had never smoked, 68.0% had quit smoking and 3.8% continued to smoke. Lung disease was diagnosed in 98.5%, thereof most patients were diagnosed with emphysema (63.8%) and/or chronic obstructive pulmonary disease (44.0%). Median diagnostic delay was 5.3 years (inter-quartile range [IQR] 2.2-11.5 years). In multivariable analysis (n = 229), a longer diagnostic delay was significantly associated with worse OS (hazard ratio [HR] 1.61; 95% CI 1.09-2.38; p = 0.016) and TS (HR 1.43; 95% CI 1.08-1.89; p = 0.011), independent from age, smoking status, body mass index (BMI), forced expiratory volume in one second (FEV1) and long-term oxygen treatment. Furthermore, BMI, age and active smoking were significantly associated with worse OS as well as BMI, active smoking and FEV1 were with worse TS. CONCLUSIONS A delayed diagnosis was associated with significantly worse OS and TS. Screening should be improved and efforts to ensure early AATD diagnosis should be intensified.
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Affiliation(s)
- Tobias Meischl
- grid.487248.50000 0004 9340 1179Karl Landsteiner Institute for Lung Research and Pulmonary Oncology, Klinik Ottakring, Montleartstraße 37, 1160 Vienna, Austria ,grid.22937.3d0000 0000 9259 8492Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Karin Schmid-Scherzer
- grid.487248.50000 0004 9340 1179Karl Landsteiner Institute for Lung Research and Pulmonary Oncology, Klinik Ottakring, Montleartstraße 37, 1160 Vienna, Austria ,Department of Medicine II With Pneumology, Klinik Ottakring, Vienna, Austria
| | - Florian Vafai-Tabrizi
- grid.487248.50000 0004 9340 1179Karl Landsteiner Institute for Lung Research and Pulmonary Oncology, Klinik Ottakring, Montleartstraße 37, 1160 Vienna, Austria ,Department of Medicine II With Pneumology, Klinik Ottakring, Vienna, Austria
| | - Gert Wurzinger
- Center of Pulmology, LKH Graz II, Standort Enzenbach, Gratwein-Strassengel, Austria
| | - Eva Traunmüller-Wurm
- grid.459707.80000 0004 0522 7001Department of Pulmology, Klinikum Wels-Grieskirchen, Wels, Austria
| | - Kristina Kutics
- grid.459707.80000 0004 0522 7001Department of Pulmology, Klinikum Wels-Grieskirchen, Wels, Austria
| | - Markus Rauter
- grid.415431.60000 0000 9124 9231Department of Pulmonology, Klinikum Klagenfurt Am Woerthersee, Klagenfurt, Austria
| | | | - Simona Müller
- Department of Pulmonology, Landeskrankenhaus Hohenems, Hohenems, Austria
| | - Norbert Kaufmann
- Division of Gastroenterology, Infectiology and Pneumology, Department of Medicine, LKH Graz II, Graz, Austria
| | - Judith Löffler-Ragg
- grid.5361.10000 0000 8853 2677Department of Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Arschang Valipour
- grid.487248.50000 0004 9340 1179Karl Landsteiner Institute for Lung Research and Pulmonary Oncology, Klinik Ottakring, Montleartstraße 37, 1160 Vienna, Austria ,Department of Respiratory and Critical Care Medicine, Klinik Floridsdorf, Vienna, Austria
| | - Georg-Christian Funk
- grid.487248.50000 0004 9340 1179Karl Landsteiner Institute for Lung Research and Pulmonary Oncology, Klinik Ottakring, Montleartstraße 37, 1160 Vienna, Austria ,Department of Medicine II With Pneumology, Klinik Ottakring, Vienna, Austria
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Acquavella J, Vágó E, Sorensen HT, Horváth-Puhó E, Hess GP. Registry-based cohort study of alpha-1 antitrypsin deficiency prevalence, incidence and mortality in Denmark 2000-2018. BMJ Open Respir Res 2022; 9:9/1/e001281. [PMID: 36549785 PMCID: PMC9791442 DOI: 10.1136/bmjresp-2022-001281] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE To estimate the prevalence of diagnosed alpha-1 antitrypsin deficiency (dAATD) in Denmark as of 31 December 2018, and dAATD incidence and mortality from 1 January 2000 to 31 December 2018. STUDY DESIGN AND SETTING We used the Danish National Patient Registry to identify patients with dAATD based on the International Classification of Diseases, 10th Revision (ICD-10) code E88.0A and the Danish Civil Registration System (CRS) for population counts and vital status. We estimated dAATD prevalence, incidence and mortality. We compared mortality among patients with dAATD and an age-matched and sex-matched cohort extracted from the Danish CRS. We conducted a sensitivity analysis to examine whether coding changes during 2000-2018, from a general to a more specific ICD-10 code for AATD, and left truncation affected results appreciably. RESULTS The prevalence of dAATD was 12.9 (95% CI 11.9 to 13.8) per 100 000 persons. The age distribution was bimodal, with peaks at ages ≤12 and ≥45 years. The incidence rate per 100 000 person-years was 0.90 (95% CI 0.85 to 0.96), again with a bimodal age distribution. Mortality was higher for patients with dAATD than for the general population (mortality rate ratio (mRR) 4.7, 95% CI 4.1 to 5.3), especially for children (mRR 33.8, 95% CI 6.8 to 167.4). The sensitivity analysis indicated that dAATD prevalence might have been as high as 19.7 per 100 000 persons due to less specific ICD-10 coding for AATD early in the study period or 21.4 per 100 000 persons correcting for left truncation. CONCLUSION Diagnosed AATD was associated with increased mortality, especially for children. The finding for children was based on few deaths and had very wide 95% CIs.
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Affiliation(s)
- John Acquavella
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Emese Vágó
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Henrik Toft Sorensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark,Departments of Health Research and Policy (Epidemiology), Stanford University, Stanford, California, USA
| | | | - Gregory P Hess
- Department of Population Health, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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12
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Estey MP, Tahooni T, Nelson TN, Parker ML, Agbor TA, Yang HM, Jen R, Barakauskas VE, Lam GY, Matthews A, Mattman A. Is the diagnostic rate for the common subtypes of A1AT deficiency consistent across two Canadian Provinces? Clin Biochem 2021; 95:84-88. [PMID: 33964271 DOI: 10.1016/j.clinbiochem.2021.05.002] [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: 02/18/2021] [Revised: 04/29/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND The diagnosis of alpha-1-antitrypsin (A1AT) deficiency has been hindered by obscurity concerning the testing process and treatment implications. In this study, we aimed to identify regional differences in the diagnostic rates for A1AT deficiency in the western Canadian provinces of British Columbia (BC) and Alberta (AB). METHODS The number of A1AT deficiency variant genotype (ZZ, SZ, MZ, SS, and MS) diagnoses were reviewed for BC and AB. The regional diagnostic rates for A1AT deficiency variants in these two provinces, normalized for the predicted population prevalence of each variant genotype, was defined as the annual provincial diagnostic rate (APDR) for a given variant genotype. Sex specific variations in the mean age at diagnosis for the five variant genotypes were compared both within and between provinces. RESULTS The SZ and MZ genotype APDRs were significantly increased in the AB population compared to the BC population. The SS and MS APDRs were similar between AB and BC. There was a significantly decreased mean age of diagnosis for AB males, as compared to BC males (for the SZ, MS, and MZ genotypes) and as compared to AB females (for the MS, MZ, and SS genotypes). There were no significant differences in the mean age of diagnosis between the females and males in BC, or between females in AB and BC, for any genotype. CONCLUSION The notably higher APDR for more severe A1AT deficiency genotypes, and lower mean age of diagnosis for most variant genotypes in AB males, deserves further investigation to determine the explanation(s) for these differences.
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Affiliation(s)
- Mathew P Estey
- DynaLIFE Medical Labs, 200, 10150 102 St, Edmonton, AB T5J 5E2, Canada; Department of Laboratory Medicine and Pathology, University of Alberta, 5B4.02 Walter C. Mackenzie Health Sciences Centre, Edmonton, AB T6G 2R7, Canada.
| | - Tania Tahooni
- Department of Pathology and Laboratory Medicine, St Paul's Hospital, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada
| | - Tanya N Nelson
- Department of Pathology and Laboratory Medicine, BC Children's & BC Women's Hospitals, Children's and Women's Health Centre of British Columbia, 4480 Oak Street, Room 2J10, Vancouver, BC V6H 3V4, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, Rm. G227 - 2211 Westbrook Mall, Vancouver, BC V6T 2B5, Canada.
| | - Michelle L Parker
- DynaLIFE Medical Labs, 200, 10150 102 St, Edmonton, AB T5J 5E2, Canada; Department of Laboratory Medicine and Pathology, University of Alberta, 5B4.02 Walter C. Mackenzie Health Sciences Centre, Edmonton, AB T6G 2R7, Canada.
| | - Terence A Agbor
- DynaLIFE Medical Labs, 200, 10150 102 St, Edmonton, AB T5J 5E2, Canada; Department of Laboratory Medicine and Pathology, University of Alberta, 5B4.02 Walter C. Mackenzie Health Sciences Centre, Edmonton, AB T6G 2R7, Canada.
| | - Hui-Min Yang
- Department of Pathology and Laboratory Medicine, University of British Columbia, Rm. G227 - 2211 Westbrook Mall, Vancouver, BC V6T 2B5, Canada; Department of Pathology and Laboratory Medicine, Vancouver General Hospital, 910 W 10th Ave., Vancouver, BC V5Z 1M9, Canada
| | - Rachel Jen
- Department of Medicine, Division of Respiratory Medicine, University of British Columbia, 7th Floor, 2775 Laurel Street, BC V5Z 1M9, Canada; Department of Medicine, Division of Pulmonary Medicine, University of Alberta, 11302 83 Ave NW, Edmonton, AB T6G 2G3, Canada
| | - Vilte E Barakauskas
- Department of Pathology and Laboratory Medicine, BC Children's & BC Women's Hospitals, Children's and Women's Health Centre of British Columbia, 4480 Oak Street, Room 2J10, Vancouver, BC V6H 3V4, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, Rm. G227 - 2211 Westbrook Mall, Vancouver, BC V6T 2B5, Canada.
| | - Grace Y Lam
- Department of Medicine, Division of Pulmonary Medicine, University of Alberta, 11302 83 Ave NW, Edmonton, AB T6G 2G3, Canada.
| | - Allison Matthews
- Department of Pathology and Laboratory Medicine, BC Children's & BC Women's Hospitals, Children's and Women's Health Centre of British Columbia, 4480 Oak Street, Room 2J10, Vancouver, BC V6H 3V4, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, Rm. G227 - 2211 Westbrook Mall, Vancouver, BC V6T 2B5, Canada
| | - Andre Mattman
- Department of Pathology and Laboratory Medicine, St Paul's Hospital, 1081 Burrard St, Vancouver, BC V6Z 1Y6, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, Rm. G227 - 2211 Westbrook Mall, Vancouver, BC V6T 2B5, Canada.
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13
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Sieloff EM, Rutledge B, Huffman C, Vos D, Melgar T. National trends and outcomes of genetically inherited non-alcoholic chronic liver disease in the USA: estimates from the National Inpatient Sample (NIS) database. Gastroenterol Rep (Oxf) 2021; 9:38-48. [PMID: 33747525 PMCID: PMC7962742 DOI: 10.1093/gastro/goaa091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/21/2020] [Accepted: 12/07/2020] [Indexed: 02/05/2023] Open
Abstract
Background Medical literature on the prevalence of genetic liver disease is lacking. In this study, we investigated the in-hospital healthcare and economic burden from genetic causes of non-alcoholic chronic liver disease (NACLD) and non-alcoholic liver cirrhosis (NALC) in the USA. Methods Data were abstracted from the National Inpatient Sample database between 2002 and 2014 using ICD9 codes for patients discharged with NACLD and NALC secondary to genetic diseases including alpha-1 antitrypsin deficiency (A1ATd), cystic fibrosis (CF), Wilson disease (WD), hereditary hemochromatosis (HHC), glycogen storage disease, and disorders of aromatic amino-acid metabolism (DAAAM). Results Throughout the study period, there were 19,332 discharges for NACLD associated with the six genetic diseases including 14,368 for NALC. There were $1.09 billion in hospital charges, 790 in-hospital deaths, and 955 liver transplants performed. Overall, A1ATd was associated with 8,983 (62.52%) hospitalizations for NALC followed by WD, CF, and HHC. The highest in-hospital mortality was seen with HHC. The greatest frequency of liver transplants was seen with DAAAM. Conclusion The number of hospitalizations for genetic liver diseases continues to increase. With increased funding and directed research efforts, we can aim to improve medical treatments and the quality of life for patients at risk for liver deterioration.
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Affiliation(s)
- Eric M Sieloff
- Department of Internal Medicine, Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, MI, USA
| | - Brian Rutledge
- Department of Internal Medicine, Division of Gastroenterology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Cuyler Huffman
- Department of Biostatistics, Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, MI, USA
| | - Duncan Vos
- Department of Biostatistics, Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, MI, USA
| | - Thomas Melgar
- Department of Pediatrics, Adolescent and Internal Medicine, Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, MI, USA
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14
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Quinn M, Ellis P, Pye A, Turner AM. Obstacles to Early Diagnosis and Treatment of Alpha-1 Antitrypsin Deficiency: Current Perspectives. Ther Clin Risk Manag 2020; 16:1243-1255. [PMID: 33364772 PMCID: PMC7751439 DOI: 10.2147/tcrm.s234377] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/30/2020] [Indexed: 11/23/2022] Open
Abstract
This review summarizes the current research and outlooks regarding the obstacles to diagnosing and treating early alpha-1-antitrypsin deficiency (AATD). It draws on prior systematic reviews and expert surveys to discover precisely what difficulties exist in early diagnosis and treatment of AATD and elucidate potential solutions to ease these difficulties. The perceived rarity of AATD may translate to a condition poorly understood by primary care physicians, and even many respiratory physicians, which results in opportunities for diagnosis being missed, especially in mild or asymptomatic patients. There are diagnostic techniques involving biomarkers and home testing methods which could improve the rate of early diagnosis. With respect to treatment, AATD involves treating two separate pathologies, lung disease and liver disease. The only specific AATD treatment, augmentation therapy, has proven ability in treating lung disease but not liver disease. Alpha-1-antitrypsin (AAT) synthesized in the liver can form damaging polymers that also result in reduced circulating AAT levels and, whilst liver transplantation is used to effectively treat AATD, it is inappropriate in early disease. Novel therapeutic areas such as gene editing and increasing autophagy are therefore being researched as future treatments. Ultimately, diagnosis and treatment are intrinsically linked in AATD, with earlier diagnosis leading to better treatment options and thus better patient outcomes.
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Affiliation(s)
- Mark Quinn
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Paul Ellis
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Anita Pye
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Alice M Turner
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK.,University Hospitals Birmingham, Birmingham, UK
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15
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van Dijk M, Gan CT, Koster TD, Wijkstra PJ, Slebos DJ, Kerstjens HAM, van der Vaart H, Duiverman ML. Treatment of severe stable COPD: the multidimensional approach of treatable traits. ERJ Open Res 2020; 6:00322-2019. [PMID: 32984420 PMCID: PMC7502698 DOI: 10.1183/23120541.00322-2019] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 05/26/2020] [Indexed: 01/02/2023] Open
Abstract
Now that additional treatment options for severe chronic obstructive pulmonary disease (COPD) have emerged in recent years, patients with severe COPD should not be left in the rather hopeless situation of “there is nothing to improve” any more. Inertia or fatalism is a disservice to our patients. Ranging from advanced care planning to quite intense and demanding therapies such as multidisciplinary pulmonary rehabilitation, (endoscopic) lung volume reduction, chronic noninvasive ventilation and lung transplantation, caregivers should try to provide a personalised treatment for every severe COPD patient. In this review, we aim to describe the multidimensional approach to these patients at our centre along the lines of treatable traits leading to specific additional treatment modalities on top of standard care. Severe COPD is not hopeless; in light of treatment options such as pulmonary rehabilitation, bronchoscopic lung volume reduction, chronic noninvasive ventilation and lung transplantation, every patient deserves a personalised assessment of treatable traitshttps://bit.ly/2TO7jxB
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Affiliation(s)
- Marlies van Dijk
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands
| | - Christiaan T Gan
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands
| | - T David Koster
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands
| | - Peter J Wijkstra
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands
| | - Dirk-Jan Slebos
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands
| | - Huib A M Kerstjens
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands
| | - Hester van der Vaart
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands.,Centre of Rehabilitation Beatrixoord, Haren, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Marieke L Duiverman
- Dept of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Groningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, The Netherlands
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16
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Miravitlles M, Nuñez A, Torres-Durán M, Casas-Maldonado F, Rodríguez-Hermosa JL, López-Campos JL, Calle M, Rodríguez E, Esquinas C, Barrecheguren M. The Importance of Reference Centers and Registries for Rare Diseases: The Example of Alpha-1 Antitrypsin Deficiency. COPD 2020; 17:346-354. [DOI: 10.1080/15412555.2020.1795824] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Marc Miravitlles
- Pneumology Department, Hospital Universitari Vall d'Hebron; Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Alexa Nuñez
- Pneumology Department, Hospital Universitari Vall d'Hebron; Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Maria Torres-Durán
- Servicio de Neumología, Hospital Álvaro Cunqueiro. NeumoVigoI + i Research Group, IIS Galicia Sur, Vigo, Spain
| | - Francisco Casas-Maldonado
- Servicio de Neumología, Hospital Universitario San Cecilio, Departamento de Medicina, Facultad de Medicina, Universidad de Granada, Granada, Spain
| | - Juan Luis Rodríguez-Hermosa
- Servicio de Neumología. Hospital Clínico de San Carlos, Departamento de Medicina, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - José Luis López-Campos
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias. Instituto de Biomedicina de Sevilla (IBiS). Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Sevilla, Spain
| | - Myriam Calle
- Servicio de Neumología. Hospital Clínico de San Carlos, Departamento de Medicina, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - Esther Rodríguez
- Pneumology Department, Hospital Universitari Vall d'Hebron; Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Cristina Esquinas
- Pneumology Department, Hospital Universitari Vall d'Hebron; Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Miriam Barrecheguren
- Pneumology Department, Hospital Universitari Vall d'Hebron; Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
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17
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Scarlata S, Santangelo S, Ferrarotti I, Corsico AG, Ottaviani S, Finamore P, Fontana D, Miravitlles M, Incalzi RA. Electrophoretic α1-globulin for screening of α1-antitrypsin deficient variants. Clin Chem Lab Med 2020; 58:1837-1845. [DOI: 10.1515/cclm-2020-0071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/23/2020] [Indexed: 12/31/2022]
Abstract
Abstract
Background
Available screening procedures for the detection of α1-antitrypsin-deficient (AATD) mutations have suboptimal cost-effectiveness ratios. The aim in this study was to evaluate and compare the viability of a composite approach, primarily based on the α1-globulin fraction, in identifying AAT genetic analysis eligible patients against standard screening procedures, based on clinically compatible profiling and circulating AAT < 1 g/L.
Methods
A total of 21,094 subjects were screened for AATD and deemed eligible when meeting one of these criteria: α1-globulin ≤2.6%; α1-globulin 2.6%–2.9% and AST: >37 U/L and ALT: > 78 U/L; α1-globulin %: 2.9–4.6% and AST: >37 U/L and ALT: >78 U/L and erythrocyte sedimentation rate (ESR) >34 mm/h and C-reactive protein (CRP) >3 mg/L. Subjects were genotyped for the AAT gene mutation. Detection rates, including those of the rarest variants, were compared with results from standard clinical screenings. Siblings of mutated subjects were included in the study, and their results compared.
Results
Eighty-two subjects were identified. Among these, 51.2% were found to carry some Pi*M variant versus 15.9% who were clinically screened. The detection rates of the screening, including relatives, were: 50.5% for the proposed algorithm and 18.9% for the clinically-based screening. Pi*M variant prevalence in the screened population was in line with previous studies. Interestingly, 46% of subjects with Pi*M variants had an AAT plasma level above the 1 g/L threshold.
Conclusions
A composite algorithm primarily based on the α1-globulin fraction could effectively identify carriers of Pi*M gene mutation. This approach, not requiring clinical evaluation or AAT serum determination, seems suitable for clinical and epidemiological purposes.
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Affiliation(s)
- Simone Scarlata
- Unit of Respiratory Pathophysiology and Thoracic Endoscopy – Geriatrics, Department of Medicine , Campus Bio-Medico University and Teaching Hospital , Rome , Italy
| | - Simona Santangelo
- Unit of Respiratory Pathophysiology and Thoracic Endoscopy – Geriatrics, Department of Medicine , Campus Bio-Medico University and Teaching Hospital , Rome , Italy
| | - Ilaria Ferrarotti
- Center for Diagnosis of Inherited α 1 -Antitrypsin Deficiency, Department of Internal Medicine and Therapeutics, Pneumology Unit, Fondazione IRCCS Policlinico San Matteo , Università di Pavia , Pavia , Italy
| | - Angelo Guido Corsico
- Center for Diagnosis of Inherited α 1 -Antitrypsin Deficiency, Department of Internal Medicine and Therapeutics, Pneumology Unit, Fondazione IRCCS Policlinico San Matteo , Università di Pavia , Pavia , Italy
| | - Stefania Ottaviani
- Center for Diagnosis of Inherited α 1 -Antitrypsin Deficiency, Department of Internal Medicine and Therapeutics, Pneumology Unit, Fondazione IRCCS Policlinico San Matteo , Università di Pavia , Pavia , Italy
| | - Panaiotis Finamore
- Unit of Respiratory Pathophysiology and Thoracic Endoscopy – Geriatrics, Department of Medicine , Campus Bio-Medico University and Teaching Hospital , Rome , Italy
| | - Davide Fontana
- Unit of Respiratory Pathophysiology and Thoracic Endoscopy – Geriatrics, Department of Medicine , Campus Bio-Medico University and Teaching Hospital , Rome , Italy
| | - Marc Miravitlles
- Pneumology Department Hospital Universitari Vall d’Hebron/Vall d’Hebron Research Institute Barcelona , Barcelona , Spain
| | - Raffaele Antonelli Incalzi
- Unit of Respiratory Pathophysiology and Thoracic Endoscopy – Geriatrics, Department of Medicine , Campus Bio-Medico University and Teaching Hospital , Rome , Italy
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Dummer J, Dobler CC, Holmes M, Chambers D, Yang IA, Parkin L, Smith S, Wark P, Dev A, Hodge S, Dabscheck E, Gooi J, Samuel S, Knowles S, Holland AE. Diagnosis and treatment of lung disease associated with alpha one-antitrypsin deficiency: A position statement from the Thoracic Society of Australia and New Zealand. Respirology 2020; 25:321-335. [PMID: 32030868 PMCID: PMC7078913 DOI: 10.1111/resp.13774] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/27/2019] [Accepted: 01/10/2020] [Indexed: 12/18/2022]
Abstract
AATD is a common inherited disorder associated with an increased risk of developing pulmonary emphysema and liver disease. Many people with AATD-associated pulmonary emphysema remain undiagnosed and therefore without access to care and counselling specific to the disease. AAT augmentation therapy is available and consists of i.v. infusions of exogenous AAT protein harvested from pooled blood products. Its clinical efficacy has been the subject of some debate and the use of AAT augmentation therapy was recently permitted by regulators in Australia and New Zealand, although treatment is not presently subsidized by the government in either country. The purpose of this position statement is to review the evidence for diagnosis and treatment of AATD-related lung disease with reference to the Australian and New Zealand population. The clinical efficacy and adverse events of AAT augmentation therapy were evaluated by a systematic review, and the GRADE process was employed to move from evidence to recommendation. Other sections address the wide range of issues to be considered in the care of the individual with AATD-related lung disease: when and how to test for AATD, changing diagnostic techniques, monitoring of progression, disease in heterozygous AATD and pharmacological and non-pharmacological therapy including surgical options for severe disease. Consideration is also given to broader issues in AATD that respiratory healthcare staff may encounter: genetic counselling, patient support groups, monitoring for liver disease and the need to establish national registries for people with AATD in Australia and New Zealand.
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Affiliation(s)
- Jack Dummer
- Department of Medicine, Dunedin School of MedicineUniversity of OtagoDunedinNew Zealand
| | - Claudia C. Dobler
- Institute for Evidence‐Based HealthcareBond University and Gold Coast University HospitalGold CoastQLDAustralia
- Department of Respiratory MedicineLiverpool HospitalSydneyNSWAustralia
| | - Mark Holmes
- Department of Thoracic MedicineRoyal Adelaide HospitalAdelaideSAAustralia
- Faculty of MedicineThe University of AdelaideAdelaideSouth AustraliaAustralia
| | - Daniel Chambers
- Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
- Queensland Lung Transplant ProgramThe Prince Charles HospitalBrisbaneQLDAustralia
| | - Ian A. Yang
- Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
- Department of Thoracic MedicineThe Prince Charles HospitalBrisbaneQLDAustralia
| | - Lianne Parkin
- Department of Preventive and Social Medicine, Dunedin School of MedicineUniversity of OtagoDunedinNew Zealand
| | - Sheree Smith
- School of Nursing and MidwiferyWestern Sydney UniversitySydneyNSWAustralia
| | - Peter Wark
- Centre for Healthy LungsUniversity of NewcastleNewcastleNSWAustralia
- Department of Respiratory and Sleep MedicineJohn Hunter HospitalNew LambtonNSWAustralia
| | - Anouk Dev
- Department of GastroenterologyMonash HealthMelbourneVICAustralia
| | - Sandra Hodge
- Department of Thoracic MedicineRoyal Adelaide HospitalAdelaideSAAustralia
- Faculty of MedicineThe University of AdelaideAdelaideSouth AustraliaAustralia
| | - Eli Dabscheck
- Department of Respiratory MedicineAlfred HospitalMelbourneVICAustralia
- Department of Allergy, Immunology and Respiratory Medicine, Central Clinical SchoolMonash UniversityMelbourneVICAustralia
| | - Julian Gooi
- Department of Cardiothoracic SurgeryAlfred HospitalMelbourneVICAustralia
| | - Sameh Samuel
- Department of Respiratory MedicineWollongong HospitalWollongongNSWAustralia
- School of Medicine, University of WollongongWollongongNSWAustralia
| | | | - Anne E. Holland
- Department of Allergy, Immunology and Respiratory Medicine, Central Clinical SchoolMonash UniversityMelbourneVICAustralia
- Department of PhysiotherapyAlfred HealthMelbourneVICAustralia
- Institute for Breathing and SleepMelbourneVICAustralia
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19
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Chorostowska-Wynimko J, Barrecheguren M, Ferrarotti I, Greulich T, Sandhaus RA, Campos M. New Patient-Centric Approaches to the Management of Alpha-1 Antitrypsin Deficiency. Int J Chron Obstruct Pulmon Dis 2020; 15:345-355. [PMID: 32103933 PMCID: PMC7024807 DOI: 10.2147/copd.s234646] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 01/24/2020] [Indexed: 12/30/2022] Open
Abstract
Alpha-1 antitrypsin deficiency (AATD) is a rare and underdiagnosed genetic predisposition for COPD and emphysema and other conditions, including liver disease. Although there have been improvements in terms of awareness of AATD and understanding of its treatment in recent years, current challenges center on optimizing detection and management of patients with AATD, and improving access to intravenous (IV) AAT therapy – the only available pharmacological intervention that can slow disease progression. However, as an orphan disease with geographically dispersed patients, international cooperation is essential to address these issues. To achieve this, new European initiatives in the form of the European Reference Network for Rare Lung Diseases (ERN-LUNG) and the European Alpha-1 Research Collaboration (EARCO) have been established. These organizations are striving to address the current challenges in AATD, and provide a new platform for future research efforts in AATD. The first objectives of ERN-LUNG are to establish a quality control program for European AATD laboratories and create a disease management program for AATD, following the success of such programs in the United States. The main purpose of EARCO is to create a pan-European registry, with the aim of understanding the natural history of the disease and supporting the development of new treatment modalities in AATD and access to AAT therapy. Going further, other patient-centric initiatives involve improving the convenience of intravenous AAT therapy infusions through extended-interval dosing and self-administration. The present review will discuss the implementation of these initiatives and their potential contribution to the optimization of patient care in AATD.
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Affiliation(s)
- Joanna Chorostowska-Wynimko
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland
| | | | - Ilaria Ferrarotti
- Department of Internal Medicine and Therapeutics, Pneumology Unit IRCCS San Matteo Hospital Foundation, University of Pavia, Pavia, Italy
| | - Timm Greulich
- Department of Medicine, Pulmonary and Critical Care Medicine, University Medical Centre Giessen and Marburg, Philipps-University, Member of the German Centre for Lung Research (DZL), Marburg, Germany
| | - Robert A Sandhaus
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, CO, USA
| | - Michael Campos
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, FL, USA
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Belmonte I, Nuñez A, Barrecheguren M, Esquinas C, Pons M, López-Martínez RM, Ruiz G, Blanco-Grau A, Ferrer R, Genescà J, Miravitlles M, Rodríguez-Frías F. Trends in Diagnosis of Alpha-1 Antitrypsin Deficiency Between 2015 and 2019 in a Reference Laboratory. Int J Chron Obstruct Pulmon Dis 2020; 15:2421-2431. [PMID: 33116457 PMCID: PMC7548232 DOI: 10.2147/copd.s269641] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 09/28/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Alpha-1 antitrypsin deficiency (AATD) remains largely underdiagnosed despite recommendations of healthcare institutions and programmes designed to increase awareness. The objective was to analyse the trends in AATD diagnosis during the last 5 years in a Spanish AATD reference laboratory. METHODS This was a retrospective revision of all alpha-1 antitrypsin (AAT) determinations undertaken in our laboratory from 2015 to 2019. We analysed the number of AAT determinations performed and described the characteristics of the individuals tested, as well as the medical specialties and the reasons for requesting AAT determination. RESULTS A total of 3507 determinations were performed, of which 5.5% corresponded to children. A significant increase in the number of AAT determinations was observed from 349 in 2015 to 872 in 2019. Among the samples, 57.6% carried an intermediate AATD (50-119 mg/dL) and 2.4% severe deficiency (<50 mg/dL). The most frequent phenotype in severe AATD individuals was PI*ZZ (78.5%), and aminotransferase levels were above normal in around 43% of children and 30% of adults. Respiratory specialists requested the highest number of AAT determinations (31.5%) followed by digestive diseases and internal medicine (27.5%) and primary care physicians (19.7%). The main reason for AAT determination in severe AATD adults was chronic obstructive pulmonary disease (41.7%), but reasons for requesting AAT determination were not reported in up to 41.7% of adults and 58.3% of children. CONCLUSION There is an increase in the frequency of AATD testing despite the rate of AAT determination remaining low. Awareness about AAT is probably increasing, but the reason for testing is not always clear.
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Affiliation(s)
- Irene Belmonte
- Pneumology Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Alexa Nuñez
- Pneumology Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès). Barcelona, Spain
| | - Miriam Barrecheguren
- Pneumology Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Cristina Esquinas
- Pneumology Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Mònica Pons
- Liver Unit, Department of Internal Medicine, Hospital Universitari Vall d’Hebron; Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Rosa M López-Martínez
- Department of Clinical Biochemistry, Hospital Universitari Vall d’Hebron, Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Gerard Ruiz
- Department of Clinical Biochemistry, Hospital Universitari Vall d’Hebron, Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Albert Blanco-Grau
- Department of Clinical Biochemistry, Hospital Universitari Vall d’Hebron, Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Roser Ferrer
- Department of Clinical Biochemistry, Hospital Universitari Vall d’Hebron, Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
| | - Joan Genescà
- Liver Unit, Department of Internal Medicine, Hospital Universitari Vall d’Hebron; Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Madrid, Spain
| | - Marc Miravitlles
- Pneumology Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain
- Correspondence: Marc Miravitlles Pneumology Department, Hospital Universitari Vall d’Hebron, Vall d’Hebron Institut de Recerca (VHIR), Vall d’Hebron Barcelona Hospital Campus, P. Vall d’Hebron 119-129, Barcelona08035, Spain Email
| | - Francisco Rodríguez-Frías
- Department of Clinical Biochemistry, Hospital Universitari Vall d’Hebron, Vall d’Hebron Barcelona Hospital Campus, Barcelona, Spain
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Abstract
Alpha-1 antitrypsin (AAT) protects the lung by inhibiting neutrophil proteinases, but AAT has many other non-proteolytic functions that are anti-inflammatory, antiviral and homeostatic. Approximately 1 in 1600 to 1 in 5000 people have the homozygous Z mutation, which causes AAT misfolding, accumulation in (predominantly) liver cells and low circulating levels of AAT, leading to AAT deficiency (AATD). AATD is classically a disease of neutrophilic inflammation, with an aggressive and damaging innate immune response contributing to emphysema and other pathologies. AATD is one of the most common genetic disorders but considerably under-recognised. Most patients are diagnosed later in life, by which time they may have accumulated significant lung, liver and multisystem damage. Disease presentation is heterogeneous and not fully explained by deficiency levels alone or exposure to cigarette smoking. This suggests other factors influence AATD-associated pathological processes. Aging itself is associated with organ dysfunction, including emphysema and airflow obstruction, inflammation, altered immune cell responses (termed immunosenescence) and a loss of proteostasis. Many of these processes are present in AATD but at an earlier age and more advanced stage compared with chronological aging alone. Augmentation therapy does not completely abrogate the manifold disease processes present in AATD. New approaches are needed. There is emerging evidence that both age- and AATD-related disease processes are amenable to correction by targeting proteostasis, autophagy, immunosenescence and epigenetic factors. This review explores the impact of the aging process on AATD presentation and discusses novel therapeutic strategies to mitigate low levels of AAT or misfolded AAT in an aging host.
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Soriano JB. Challenges in interpreting trends in testing for α 1-antitrypsin deficiency in COPD patients from UK primary care. Eur Respir J 2018; 52:52/6/1802064. [PMID: 30573694 DOI: 10.1183/13993003.02064-2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 10/30/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Joan B Soriano
- Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, Madrid, Spain
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Morales DR. Challenges in interpreting trends in testing for α 1-antitrypsin deficiency in COPD patients from UK primary care. Eur Respir J 2018; 52:52/6/1801986. [PMID: 30573693 DOI: 10.1183/13993003.01986-2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 10/22/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Daniel R Morales
- Division of Population Health and Genomics, University of Dundee, Dundee, UK
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