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  1. Article ; Online: Obstructive sleep apnea is associated with use of assisted ventilation among children with bronchopulmonary dysplasia hospitalized with respiratory illness: A nationwide inpatient cohort.

    Tsou, Po-Yang / Hayden, Lystra P

    Sleep medicine

    2023  Volume 109, Page(s) 181–189

    Abstract: Objective (s): Children with bronchopulmonary dysplasia (BPD) are at higher risk of respiratory insufficiency during respiratory illness. We aimed to investigate whether obstructive sleep apnea (OSA) is associated with increased morbidity among children ...

    Abstract Objective (s): Children with bronchopulmonary dysplasia (BPD) are at higher risk of respiratory insufficiency during respiratory illness. We aimed to investigate whether obstructive sleep apnea (OSA) is associated with increased morbidity among children with BPD hospitalized with acute respiratory illnesses.
    Study design: Hospital discharge records were obtained from the Kid's Inpatient Database for children <21 years of age with BPD hospitalized for acute respiratory illness between 1997 and 2012. Acute respiratory illnesses included bacterial and/or viral pneumonia, bronchiolitis, acute upper respiratory tract infections, aspiration pneumonia, or asthma exacerbation. The primary exposure was OSA. The primary outcome was invasive mechanical ventilation (IMV), and secondary outcomes were noninvasive mechanical ventilation (NIMV), length of hospital stay (LOS), and inflation-adjusted cost of hospitalization (IACH). Multivariable regression was conducted to ascertain the associations between OSA and primary and secondary outcomes accounting for BPD-associated comorbidities.
    Results: Among 33,640 hospitalizations of children with BPD for acute respiratory illness, there were 607 (1.8%) cases with comorbid OSA vs. 33,033 (98.2%) controls without OSA. Patients with OSA were more likely to have aspiration pneumonia, central sleep apnea, obesity, laryngeal stenosis, congenital airway, and skull/face/jaw anomalies. Multivariable regression showed that OSA was associated with IMV (OR 1.45, 95% CI 1.09-1.94, p = 0.012) and NIMV (OR 2.61, 95% CI 1.71-3.98, p < 0.001), but not LOS or IACH.
    Conclusions: In BPD patients hospitalized with acute respiratory illness, having OSA is associated with increased risks for respiratory insufficiency requiring noninvasive or invasive mechanical ventilation. Clinicians should consider OSA, along with other BPD-associated comorbidities, in the management of this population.
    MeSH term(s) Infant, Newborn ; Humans ; Child ; Respiration, Artificial ; Inpatients ; Bronchopulmonary Dysplasia/complications ; Bronchopulmonary Dysplasia/epidemiology ; Risk Factors ; Respiratory Insufficiency/epidemiology ; Respiratory Insufficiency/therapy ; Sleep Apnea, Obstructive/complications ; Sleep Apnea, Obstructive/epidemiology ; Sleep Apnea, Obstructive/therapy ; Pneumonia, Aspiration/complications ; Retrospective Studies
    Language English
    Publishing date 2023-07-07
    Publishing country Netherlands
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2023.06.030
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Pre-Flight Hypoxemia Challenge Testing in Bronchopulmonary Dysplasia.

    Levin, Jonathan C / Sheils, Catherine A / Hayden, Lystra P

    Pediatrics

    2023  Volume 152, Issue 2

    Abstract: Background and objectives: Former premature infants with bronchopulmonary dysplasia (BPD) are at risk for hypoxemia during air travel, but it is unclear until what age. We aimed to determine pass rates for high altitude simulation testing (HAST) by age ... ...

    Abstract Background and objectives: Former premature infants with bronchopulmonary dysplasia (BPD) are at risk for hypoxemia during air travel, but it is unclear until what age. We aimed to determine pass rates for high altitude simulation testing (HAST) by age in children with BPD and identify risks for failure.
    Methods: Retrospective, observational analysis of HAST in children with BPD at Boston Children's Hospital, using interval censoring to estimate the time-to-event curve of first pass. Curves were stratified by neonatal risk factors. Pass was considered lowest Spo2 ≥ 90%, or ≥94% for subjects with ongoing pulmonary hypertension (PH).
    Results: Ninety four HAST studies were analyzed from 63 BPD subjects; 59 studies (63%) were passed. At 3 months corrected gestational age (CGA), 50% of subjects had passed; at 6 months CGA, 67% has passed; at 12 and 18 months CGA, 72% had passed; and at 24 months CGA, 85% had passed. Neonatal factors associated with delayed time-to-pass included postnatal corticosteroid use, respiratory support at NICU discharge, and tracheostomy. BPD infants who did not require respiratory support at 36 weeks were likely to pass (91%) at 6 months CGA. At 24 months, children least likely to pass included those with a history of PH (63%) and those discharged from the NICU with oxygen or respiratory support (71%).
    Conclusions: Children with BPD on respiratory support at 36 weeks should be considered for preflight hypoxemia challenges through at least 24 months CGA, and longer if they had PH or went home from NICU on respiratory support.
    MeSH term(s) Infant, Newborn ; Infant ; Child ; Humans ; Bronchopulmonary Dysplasia/complications ; Bronchopulmonary Dysplasia/diagnosis ; Retrospective Studies ; Gestational Age ; Infant, Premature ; Respiration Disorders ; Hypoxia/etiology ; Hypoxia/complications ; Hypertension, Pulmonary/etiology ; Hypertension, Pulmonary/complications
    Language English
    Publishing date 2023-07-16
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 207677-9
    ISSN 1098-4275 ; 0031-4005
    ISSN (online) 1098-4275
    ISSN 0031-4005
    DOI 10.1542/peds.2022-061001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Comparison of Pneumotachometer and Portable Digital Turbine Spirometry for Field-Based Assessment: An Air Quality, Environment, and Respiratory Outcomes in Bronchopulmonary Dysplasia Study.

    Mukharesh, Lana / Ryan, Morgan / Hayden, Lystra P / Dahlberg, Suzanne E / Gaffin, Jonathan M

    Pediatric allergy, immunology, and pulmonology

    2023  Volume 36, Issue 3, Page(s) 115–118

    Abstract: Introduction: ...

    Abstract Introduction:
    MeSH term(s) Child ; Infant, Newborn ; Humans ; Female ; Bronchopulmonary Dysplasia/diagnosis ; Cross-Sectional Studies ; Spirometry ; Biomedical Research ; Breast Neoplasms ; Precancerous Conditions ; Air Pollution
    Language English
    Publishing date 2023-07-31
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2566338-0
    ISSN 2151-3228 ; 2151-321X
    ISSN (online) 2151-3228
    ISSN 2151-321X
    DOI 10.1089/ped.2023.0046
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Cost Savings Without Increased Risk of Respiratory Hospitalization for Preterm Children after the 2014 Palivizumab Policy Update.

    Levin, Jonathan C / Beam, Andrew L / Fox, Kathe P / Hayden, Lystra P

    American journal of perinatology

    2022  

    Abstract: Objective:  Our objective was to compare rates of hospitalizations for respiratory illnesses in preterm and full-term (FT) children for 4 years before and after the 2014 update to the American Academy of Pediatrics (AAP) respiratory syncytial virus (RSV) ...

    Abstract Objective:  Our objective was to compare rates of hospitalizations for respiratory illnesses in preterm and full-term (FT) children for 4 years before and after the 2014 update to the American Academy of Pediatrics (AAP) respiratory syncytial virus (RSV) immunoprophylaxis guidance, which restricted eligibility among infants born at 29 to 34 weeks in the first winter and all preterm infants in the second winter after neonatal discharge.
    Study design:  We conducted pre-post and interrupted time series analyses on claims data from a commercial national managed care plan. We compared the number of RSV and all respiratory hospital admissions in the first and second RSV seasons after neonatal discharge among a cohort of preterm children, regardless of palivizumab status, in the 4 years before and after the implementation of the 2014 palivizumab eligibility change. A FT group was included for reference.
    Results:  The cohort included 821 early preterm (EP, <29 weeks), 4,790 moderate preterm (MP, 29-34 weeks), and 130,782 FT children. Palivizumab use after the policy update decreased among MP children in the first and second RSV seasons after neonatal discharge, without any change in the odds of hospitalization with RSV or respiratory illness. For the EP group, there was no change in the rate of palivizumab or the odds of hospitalization with RSV or respiratory illness after the policy update. For the FT group, there was a slight decrease in odds of hospitalization post-2014 after the policy update. The interrupted time series did not reveal any secular trends over time in hospitalization rates among preterm children. Following the policy change, there were cost savings for MP children in the first and second RSV seasons, when accounting for the cost of hospitalizations and the cost of palivizumab.
    Conclusion:  Hospitalizations for RSV or respiratory illness did not increase, and cost savings were obtained after the implementation of the 2014 AAP palivizumab prophylaxis policy.
    Key points: · Palivizumab use decreased among children born moderate preterm (29 to34 weeks) after the 2014 palivizuamb policy update.. · There was no change in odds of hospitalization with respiratory syncitial virus or respiratory illness among preterm infants after the policy update when compared to before.. · There were cost savings, when accounting for the cost of hospitalizations and the cost of palivizumab, after the policy update among children born moderate preterm..
    Language English
    Publishing date 2022-08-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 605671-4
    ISSN 1098-8785 ; 0735-1631
    ISSN (online) 1098-8785
    ISSN 0735-1631
    DOI 10.1055/a-1845-2184
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Transpyloric feeding is associated with adverse in-hospital outcomes in infants with severe bronchopulmonary dysplasia.

    Levin, Jonathan C / Kielt, Matthew J / Hayden, Lystra P / Conroy, Sara / Truog, William E / Guaman, Milenka Cuevas / Abman, Steven H / Nelin, Leif D / Rosen, Rachel L / Leeman, Kristen T

    Journal of perinatology : official journal of the California Perinatal Association

    2024  Volume 44, Issue 2, Page(s) 307–313

    Abstract: Objective: To estimate the association of transpyloric feeding (TPF) with the composite outcome of tracheostomy or death for patients with severe bronchopulmonary dysplasia (sBPD).: Study design: Retrospective multi-center cohort study of preterm ... ...

    Abstract Objective: To estimate the association of transpyloric feeding (TPF) with the composite outcome of tracheostomy or death for patients with severe bronchopulmonary dysplasia (sBPD).
    Study design: Retrospective multi-center cohort study of preterm infants <32 weeks with sBPD receiving enteral feedings. We compared infants who received TPF at 36, 44, or 50 weeks post-menstrual age to those who did not receive TPF at any of those timepoints. Odds ratios were adjusted for gestational age, small for gestational age, male sex, and invasive ventilation and FiO
    Results: Among 1039 patients, 129 (12%) received TPF. TPF was associated with an increased odds of tracheostomy or death (aOR 3.5, 95% CI 2.0-6.1) and prolonged length of stay or death (aOR 3.1, 95% CI 1.9-5.2).
    Conclusions: Use of TPF in sBPD after 36 weeks was infrequent and associated with worse in-hospital outcomes, even after adjusting for respiratory severity at 36 weeks.
    MeSH term(s) Female ; Humans ; Infant, Newborn ; Male ; Bronchopulmonary Dysplasia/therapy ; Bronchopulmonary Dysplasia/complications ; Cohort Studies ; Gestational Age ; Infant, Premature ; Intensive Care Units, Neonatal ; Retrospective Studies
    Language English
    Publishing date 2024-01-13
    Publishing country United States
    Document type Multicenter Study ; Journal Article
    ZDB-ID 645021-0
    ISSN 1476-5543 ; 0743-8346
    ISSN (online) 1476-5543
    ISSN 0743-8346
    DOI 10.1038/s41372-024-01867-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Long-term respiratory and developmental outcomes in children with bronchopulmonary dysplasia and history of tracheostomy.

    Annesi, Chandler A / Levin, Jonathan C / Litt, Jonathan S / Sheils, Catherine A / Hayden, Lystra P

    Journal of perinatology : official journal of the California Perinatal Association

    2021  Volume 41, Issue 11, Page(s) 2645–2650

    Abstract: Objective: The long-term morbidity among children with severe bronchopulmonary dysplasia who require tracheostomy (tBPD) relative to those without tracheostomy (sBPD) is not well characterized. We compared childhood lung function and neurodevelopmental ... ...

    Abstract Objective: The long-term morbidity among children with severe bronchopulmonary dysplasia who require tracheostomy (tBPD) relative to those without tracheostomy (sBPD) is not well characterized. We compared childhood lung function and neurodevelopmental outcomes in tBPD and sBPD.
    Study design: Retrospective case-control study of N = 49 tBPD and N = 280 sBPD subjects in Boston Children's Hospital Preterm Lung Patient Registry and medical record. We compared NICU course, childhood spirometry, and neurodevelopmental testing.
    Result: tBPD subjects were more likely than sBPD to be Black, have pulmonary hypertension, and have subglottic stenosis. tBPD subjects had lower maximal childhood FEV
    Conclusion: Compared to subjects with sBPD who did not require tracheostomy, tBPD subjects suffer from increased long-term impairment in respiratory function and neurodevelopment.
    MeSH term(s) Bronchopulmonary Dysplasia/epidemiology ; Case-Control Studies ; Child ; Humans ; Infant, Newborn ; Infant, Premature ; Retrospective Studies ; Tracheostomy
    Language English
    Publishing date 2021-07-21
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 645021-0
    ISSN 1476-5543 ; 0743-8346
    ISSN (online) 1476-5543
    ISSN 0743-8346
    DOI 10.1038/s41372-021-01144-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Cost Savings Without Increased Risk of Respiratory Hospitalization for Preterm Children after the 2014 Palivizumab Policy Update

    Levin, Jonathan C. / Beam, Andrew L. / Fox, Kathe P. / Hayden, Lystra P.

    American Journal of Perinatology

    2022  

    Abstract: Objective: Our objective was to compare rates of hospitalizations for respiratory illnesses in preterm and full-term (FT) children for 4 years before and after the 2014 update to the American Academy of Pediatrics (AAP) respiratory syncytial virus (RSV) ...

    Abstract Objective: Our objective was to compare rates of hospitalizations for respiratory illnesses in preterm and full-term (FT) children for 4 years before and after the 2014 update to the American Academy of Pediatrics (AAP) respiratory syncytial virus (RSV) immunoprophylaxis guidance, which restricted eligibility among infants born at 29 to 34 weeks in the first winter and all preterm infants in the second winter after neonatal discharge.
    Study Design: We conducted pre-post and interrupted time series analyses on claims data from a commercial national managed care plan. We compared the number of RSV and all respiratory hospital admissions in the first and second RSV seasons after neonatal discharge among a cohort of preterm children, regardless of palivizumab status, in the 4 years before and after the implementation of the 2014 palivizumab eligibility change. A FT group was included for reference.
    Results: The cohort included 821 early preterm (EP, <29 weeks), 4,790 moderate preterm (MP, 29–34 weeks), and 130,782 FT children. Palivizumab use after the policy update decreased among MP children in the first and second RSV seasons after neonatal discharge, without any change in the odds of hospitalization with RSV or respiratory illness. For the EP group, there was no change in the rate of palivizumab or the odds of hospitalization with RSV or respiratory illness after the policy update. For the FT group, there was a slight decrease in odds of hospitalization post-2014 after the policy update. The interrupted time series did not reveal any secular trends over time in hospitalization rates among preterm children. Following the policy change, there were cost savings for MP children in the first and second RSV seasons, when accounting for the cost of hospitalizations and the cost of palivizumab.
    Conclusion: Hospitalizations for RSV or respiratory illness did not increase, and cost savings were obtained after the implementation of the 2014 AAP palivizumab prophylaxis policy.
    Key Points: Palivizumab use decreased among children born moderate preterm (29 to34 weeks) after the 2014 palivizuamb policy update. There was no change in odds of hospitalization with respiratory syncitial virus or respiratory illness among preterm infants after the policy update when compared to before. There were cost savings, when accounting for the cost of hospitalizations and the cost of palivizumab, after the policy update among children born moderate preterm.
    Keywords respiratory syncytial virus ; palivizumab ; bronchopulmonary dysplasia ; chronic lung disease ; Prematurity
    Language English
    Publishing date 2022-05-06
    Publisher Thieme Medical Publishers, Inc.
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 605671-4
    ISSN 1098-8785 ; 0735-1631
    ISSN (online) 1098-8785
    ISSN 0735-1631
    DOI 10.1055/a-1845-2184
    Database Thieme publisher's database

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  8. Article ; Online: Vitamin D deficiency is associated with respiratory symptoms and airway wall thickening in smokers with and without COPD: a prospective cohort study.

    Ghosh, Auyon J / Moll, Matthew / Hayden, Lystra P / Bon, Jessica / Regan, Elizabeth / Hersh, Craig P

    BMC pulmonary medicine

    2020  Volume 20, Issue 1, Page(s) 123

    Abstract: Background: Previous studies have established a higher prevalence of vitamin D deficiency in patients with COPD, but the relationship between vitamin D levels and COPD exacerbations remains controversial. In addition, the effect of vitamin D levels on ... ...

    Abstract Background: Previous studies have established a higher prevalence of vitamin D deficiency in patients with COPD, but the relationship between vitamin D levels and COPD exacerbations remains controversial. In addition, the effect of vitamin D levels on imaging characteristics remains mostly unexplored. Using cross-sectional and longitudinal follow up data from the COPDGene Study, we assessed the association between vitamin D levels on respiratory symptoms, exacerbations, and imaging characteristics. We hypothesized that vitamin D deficiency will be associated with worse respiratory-related outcomes.
    Methods: Current and former smokers between ages 45-80 were enrolled the COPDGene Study. Subjects completed questionnaires, spirometry, six-minute walk test, and chest computed tomography scans. A subset of subjects had measurement of serum concentration of 25-hydroxyvitamin D (25(OH)D). Vitamin D deficiency was defined as serum concentration less than 20 ng/mL. Longitudinal follow up was conducted via a web-based or telephone questionnaire.
    Results: Vitamin D levels were measured on 1544 current and former smokers, of which 981 subjects had sufficient vitamin D levels and 563 subjects had vitamin D deficiency. Subjects with vitamin D deficiency were younger with increased likelihood of being African American, being current smokers, having a lower percent predicted FEV
    Conclusion: Vitamin D deficiency was associated with increased respiratory symptoms, decreased functional status, increased frequency of severe exacerbations, as well as airway wall thickening on chest CT scans. Further research is needed to determine the potential impact of vitamin D supplementation to improve disease outcomes.
    MeSH term(s) Aged ; Aged, 80 and over ; Cross-Sectional Studies ; Female ; Humans ; Linear Models ; Lung/physiopathology ; Male ; Middle Aged ; Multivariate Analysis ; Prospective Studies ; Pulmonary Disease, Chronic Obstructive/blood ; Pulmonary Disease, Chronic Obstructive/complications ; Pulmonary Disease, Chronic Obstructive/epidemiology ; Quality of Life ; Respiratory Function Tests ; Severity of Illness Index ; Smokers ; Spirometry ; Surveys and Questionnaires ; United States/epidemiology ; Vitamin D/analogs & derivatives ; Vitamin D/blood ; Vitamin D Deficiency/blood ; Vitamin D Deficiency/complications ; Vitamin D Deficiency/epidemiology ; Walk Test
    Chemical Substances Vitamin D (1406-16-2) ; 25-hydroxyvitamin D (A288AR3C9H)
    Language English
    Publishing date 2020-05-04
    Publishing country England
    Document type Journal Article ; Multicenter Study ; Observational Study
    ZDB-ID 2059871-3
    ISSN 1471-2466 ; 1471-2466
    ISSN (online) 1471-2466
    ISSN 1471-2466
    DOI 10.1186/s12890-020-1148-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Lung function trajectories in children with post-prematurity respiratory disease: identifying risk factors for abnormal growth.

    Levin, Jonathan C / Sheils, Catherine A / Gaffin, Jonathan M / Hersh, Craig P / Rhein, Lawrence M / Hayden, Lystra P

    Respiratory research

    2021  Volume 22, Issue 1, Page(s) 143

    Abstract: Background: Survivors of prematurity are at risk for abnormal childhood lung function. Few studies have addressed trajectories of lung function and risk factors for abnormal growth in childhood. This study aims to describe changes in lung function in a ... ...

    Abstract Background: Survivors of prematurity are at risk for abnormal childhood lung function. Few studies have addressed trajectories of lung function and risk factors for abnormal growth in childhood. This study aims to describe changes in lung function in a contemporary cohort of children born preterm followed longitudinally in pulmonary clinic for post-prematurity respiratory disease and to assess maternal and neonatal risk factors associated with decreased lung function trajectories.
    Methods: Observational cohort of 164 children born preterm ≤ 32 weeks gestation followed in pulmonary clinic at Boston Children's Hospital with pulmonary function testing. We collected demographics and neonatal history. We used multivariable linear regression to identify the impact of neonatal and maternal risk factors on lung function trajectories in childhood.
    Results: We identified 264 studies from 82 subjects with acceptable longitudinal FEV
    Conclusions: Children with post-prematurity respiratory disease demonstrate worsening obstruction in lung function throughout childhood. Neonatal risk factors including exposure to mechanical ventilation and postnatal steroids, as well as maternal atopy and asthma, were associated with diminished rate of rise in lung function. These results may have implications for lung function trajectories into adulthood.
    MeSH term(s) Adolescent ; Adolescent Development ; Age Factors ; Boston ; Bronchopulmonary Dysplasia/diagnosis ; Bronchopulmonary Dysplasia/physiopathology ; Child ; Child Development ; Child, Preschool ; Female ; Forced Expiratory Volume ; Gestational Age ; Humans ; Infant, Newborn ; Infant, Premature ; Longitudinal Studies ; Lung/growth & development ; Male ; Premature Birth ; Prospective Studies ; Registries ; Respiratory Function Tests ; Risk Assessment ; Risk Factors ; Vital Capacity ; Young Adult
    Language English
    Publishing date 2021-05-10
    Publishing country England
    Document type Journal Article ; Observational Study
    ZDB-ID 2041675-1
    ISSN 1465-993X ; 1465-9921
    ISSN (online) 1465-993X
    ISSN 1465-9921
    DOI 10.1186/s12931-021-01720-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: X chromosome associations with chronic obstructive pulmonary disease and related phenotypes: an X chromosome-wide association study.

    Hayden, Lystra P / Hobbs, Brian D / Busch, Robert / Cho, Michael H / Liu, Ming / Lopes-Ramos, Camila M / Lomas, David A / Bakke, Per / Gulsvik, Amund / Silverman, Edwin K / Crapo, James D / Beaty, Terri H / Laird, Nan M / Lange, Christoph / DeMeo, Dawn L

    Respiratory research

    2023  Volume 24, Issue 1, Page(s) 38

    Abstract: Background: The association between genetic variants on the X chromosome to risk of COPD has not been fully explored. We hypothesize that the X chromosome harbors variants important in determining risk of COPD related phenotypes and may drive sex ... ...

    Abstract Background: The association between genetic variants on the X chromosome to risk of COPD has not been fully explored. We hypothesize that the X chromosome harbors variants important in determining risk of COPD related phenotypes and may drive sex differences in COPD manifestations.
    Methods: Using X chromosome data from three COPD-enriched cohorts of adult smokers, we performed X chromosome specific quality control, imputation, and testing for association with COPD case-control status, lung function, and quantitative emphysema. Analyses were performed among all subjects, then stratified by sex, and subsequently combined in meta-analyses.
    Results: Among 10,193 subjects of non-Hispanic white or European ancestry, a variant near TMSB4X, rs5979771, reached genome-wide significance for association with lung function measured by FEV
    Conclusions: This investigation identified loci influencing lung function, COPD, and emphysema in a comprehensive genetic association meta-analysis of X chromosome genetic markers from multiple COPD-related datasets. Sex differences play an important role in the pathobiology of complex lung disease, including X chromosome variants that demonstrate differential effects by sex and variants that may be relevant through escape from X chromosome inactivation. Comprehensive interrogation of the X chromosome to better understand genetic control of COPD and lung function is important to further understanding of disease pathology. Trial registration Genetic Epidemiology of COPD Study (COPDGene) is registered at ClinicalTrials.gov, NCT00608764 (Active since January 28, 2008). Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints Study (ECLIPSE), GlaxoSmithKline study code SCO104960, is registered at ClinicalTrials.gov, NCT00292552 (Active since February 16, 2006). Genetics of COPD in Norway Study (GenKOLS) holds GlaxoSmithKline study code RES11080, Genetics of Chronic Obstructive Lung Disease.
    MeSH term(s) Female ; Male ; Humans ; Genetic Predisposition to Disease/genetics ; Genome-Wide Association Study ; Pulmonary Disease, Chronic Obstructive/diagnosis ; Pulmonary Disease, Chronic Obstructive/epidemiology ; Pulmonary Disease, Chronic Obstructive/genetics ; Pulmonary Emphysema ; Phenotype ; Emphysema ; X Chromosome
    Language English
    Publishing date 2023-02-01
    Publishing country England
    Document type Meta-Analysis ; Journal Article
    ZDB-ID 2041675-1
    ISSN 1465-993X ; 1465-993X
    ISSN (online) 1465-993X
    ISSN 1465-993X
    DOI 10.1186/s12931-023-02337-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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