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Li Y, Deng Z, Wen J, Ou C, Cen X, Liao Y, Zhang Q, Xie J. Efficacy of dupilumab and risk factors for dupilumab-induced hypereosinophilia in severe asthma: a preliminary study from China. Ann Med 2024; 56:2311843. [PMID: 38316016 PMCID: PMC10846423 DOI: 10.1080/07853890.2024.2311843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/24/2024] [Indexed: 02/07/2024] Open
Abstract
OBJECTIVE Dupilumab has been approved for the treatment of severe asthma with type 2 inflammation by inhibiting interleukin (IL)-4 and IL-13 signaling. However, dupilumab-induced hypereosinophilia (HE) has been reported and should not be ignored. The aim of this study was to investigate the efficacy of dupilumab in Chinese patients with severe asthma, whether HE affects its efficacy, and the possible risk factors for HE. METHODS 20 patients with severe asthma who received dupilumab treatment for at least 12 months in the First Affiliated Hospital of Guangzhou Medical University from 2019 to 2022 were included. We compared clinical data and laboratory tests results before dupilumab treatment and at 4 and 12 months after treatment. Based on whether dupilumab treatment triggers HE defined as blood eosinophil count (BEC) ≥ 1.5 × 109 cells/L, the patients were allocated into non-HE and HE groups. RESULTS The patients showed a significant increase in asthma control test (ACT) scores, a decrease in the number of exacerbations, a decrease in the proportion of patients taking an oral corticosteroid (OCS) and in the dose, and a significant improvement in the pulmonary function parameters FEV1/FVC (%) and FEV1 (% predicted) after 4 and 12 months of treatment with dupilumab. For type 2 inflammatory biomarkers, the levels of fractional concentration of exhaled nitric oxide (FeNO), sputum eosinophil count percentage (SEC%) and total immunoglobulin E (TIgE) decreased significantly, whereas BEC were higher after 4 months of treatment, but returned to baseline levels after 12 months. 8 patients (40%) developed asymptomatic HE after dupilumab, and the efficacy was not significantly different between the HE and non-HE groups. The earliest BEC elevation appeared at 1 month after treatment, but most of them declined after 6 months, and basically returned to the baseline level around 12 months of treatment. In addition, we further found that when patients had FeNO ≥ 60 ppb, food allergens positive and combined eosinophilic otitis media (EOM), their BEC increased significantly more than that of the control group after 4 months as well as 12 months of treatment. CONCLUSIONS This study demonstrated that dupilumab was efficacious in Chinese patients with severe asthma, and some patients developed asymptomatic, self-limited HE, which did not affect its efficacy. Additionally, FeNO ≥60 ppb, food allergens positive, and co-morbidities with EOM may be the risk factors for developing HE.
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Affiliation(s)
- You Li
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Department of Pulmonary and Critical Care Medicine, Shenzhen Guangming District People’s Hospital, Shenzhen, China
| | - Zhenan Deng
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Junjie Wen
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Changxing Ou
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaomin Cen
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yongkang Liao
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qingling Zhang
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiaxing Xie
- Department of pulmonary and Critical Care Medicine, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Larenas-Linnemann D, Morfin Maciel BM. How can we improve our use of allergen immunotherapy as a treatment option for asthma and severe asthma? Expert Rev Respir Med 2023; 17:717-725. [PMID: 37642332 DOI: 10.1080/17476348.2023.2251403] [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: 05/18/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
INTRODUCTION In patients suffering from allergic asthma, especially in the pediatric age-group, allergen immunotherapy (AIT) could be of benefit and has the potential of long-term disease modification. AREAS COVERED We reviewed the evidence for a beneficial effect of AIT in allergic asthma. A correct selection of the possible candidates for AIT is crucial. We define the comprehensive allergic asthma diagnosis: confirming asthma, confirming allergic sensitization and having symptoms on exposure to the relevant allergens.We analyze why the first trials on AIT for asthma were contradictory; we consider the results of systematic reviews and discuss the high degree of heterogeneity often found in meta-analysis. We assess recent, double-blind, placebo-controlled trials in sublingual AIT that provide robust evidence for a reduction in acute asthma exacerbations and a decrease in the use of inhaled corticosteroids. Further, we demonstrate how real-world trials and large pharmacy data-based analyses confirm these findings for SLIT and SCIT. Finally, we explore the option of AIT in severe asthma patients, once well-controlled on biologic therapy. EXPERT OPINION Clear indications for AIT in asthma guidelines would benefit allergic asthmatics. AIT is a therapeutic option in appropriately selected asthmatics. Three years treatment has the potential for long-term tolerance, with persisting benefits years after discontinuation.
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Wu Y, Huang M, Zhong J, Lu Y, Gan K, Yang R, Liu Y, Li J, Chen J. The clinical efficacy of type 2 monoclonal antibodies in eosinophil-associated chronic airway diseases: a meta-analysis. Front Immunol 2023; 14:1089710. [PMID: 37114057 PMCID: PMC10126252 DOI: 10.3389/fimmu.2023.1089710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 03/22/2023] [Indexed: 04/29/2023] Open
Abstract
Background Anti-type 2 inflammation therapy has been proposed as a treatment strategy for eosinophil-associated chronic airway disorders that could reduce exacerbations and improve lung function. We performed a meta-analysis of randomized controlled trials to assess the effectiveness of type 2 monoclonal antibodies (anti-T2s) for eosinophil-associated chronic airway disorders. Methods PubMed, Embase, Web of Science, and Cochrane Library were searched from their inception to 21 August 2022. Randomized clinical trials evaluating the effectiveness of anti-T2s versus placebo in the treatment of chronic airway diseases were selected. The outcomes were exacerbation rate and change in pre-bronchodilator forced expiratory volume in 1 s (FEV1) from baseline. The Cochrane Risk of Bias Assessment Tool 1.0 was used to evaluate the risk of bias, and the random-effects or fixed-effect model were used to pool the data. Results Thirty-eight articles concerning forty-one randomized clinical trials with 17,115 patients were included. Compared with placebo, anti-T2s therapy yielded a significant reduction in exacerbation rate in COPD and asthma (Rate Ratio (RR)=0.89, 95%CI, 0.83-0.95, I2 = 29.4%; RR= 0.59, 95%CI, 0.52-0.68, I2 = 83.9%, respectively) and improvement in FEV1 in asthma (Standard Mean Difference (SMD)=0.09, 95%CI, 0.08-0.11, I2 = 42.6%). Anti-T2s therapy had no effect on FEV1 improvement in COPD (SMD=0.05, 95%CI, -0.01-0.10, I2 = 69.8%). Conclusion Despite inconsistent findings across trials, anti-T2s had a positive overall impact on patients' exacerbation rate in asthma and COPD and FEV1 in asthma. Anti-T2s may be effective in treating chronic airway illnesses related to eosinophils. Systematic Review Registration https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022362280.
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Affiliation(s)
- Yuan Wu
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Mengfen Huang
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinyao Zhong
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yue Lu
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Kao Gan
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
| | - Rongyuan Yang
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
- Guangzhou Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Emerging Infectious Diseases, Guangzhou, China
| | - Yuntao Liu
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
- Guangzhou Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Emerging Infectious Diseases, Guangzhou, China
| | - Jiqiang Li
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
- Guangzhou Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Emerging Infectious Diseases, Guangzhou, China
| | - Jiankun Chen
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, China
- Guangzhou Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Emerging Infectious Diseases, Guangzhou, China
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Pianigiani T, Alderighi L, Meocci M, Messina M, Perea B, Luzzi S, Bergantini L, D’Alessandro M, Refini RM, Bargagli E, Cameli P. Exploring the Interaction between Fractional Exhaled Nitric Oxide and Biologic Treatment in Severe Asthma: A Systematic Review. Antioxidants (Basel) 2023; 12:antiox12020400. [PMID: 36829959 PMCID: PMC9952501 DOI: 10.3390/antiox12020400] [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: 12/25/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Fractional exhaled nitric oxide (FeNO) is a biomarker of airway inflammation associated with airway hyper-responsiveness and type-2 inflammation. Its role in the management of severe asthmatic patients undergoing biologic treatment, as well as FeNO dynamics during biologic treatment, is largely unexplored. PURPOSE The aim was to evaluate published data contributing to the following areas: (1) FeNO as a predictive biomarker of response to biologic treatment; (2) the influence of biologic treatment in FeNO values; (3) FeNO as a biomarker for the prediction of exacerbations in patients treated with biologics. METHODS The systematic search was conducted on the Medline database through the Pubmed search engine, including all studies from 2009 to the present. RESULTS Higher baseline values of FeNO are associated with better clinical control in patients treated with omalizumab, dupilumab, and tezepelumab. FeNO dynamics during biologic treatment highlights a clear reduction in FeNO values in patients treated with anti-IL4/13 and anti-IL13, as well as in patients treated with tezepelumab. During the treatment, FeNO may help to predict clinical worsening and to differentiate eosinophilic from non-eosinophilic exacerbations. CONCLUSIONS Higher baseline FeNO levels appear to be associated with a greater benefit in terms of clinical control and reduction of exacerbation rate, while FeNO dynamics during biologic treatment remains a largely unexplored issue since few studies have investigated it as a primary outcome. FeNO remains detectable during biologic treatment, but its potential utility as a biomarker of clinical control is still unclear and represents an interesting research area to be developed.
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Guilleminault L, Camus C, Raherison-Semjen C, Capdepon A, Bourdin A, Bonniaud P, Fry S, Devouassoux G, Blanc FX, Pison C, Dupin C, Khayath N, Courdeau J, Valcke-Brossollet J, Nocent-Ejnaini C, Rolland F, Lamandi C, Proust A, Ozier A, Portel L, Gaspard W, Roux-Claude P, Beurnier A, Martinez S, Dot JM, Hennegrave F, Vignal G, Auvray E, Paleiron N, Just N, Miltgen J, Russier M, Olivier C, Taillé C, Didier A. Improvement in severe asthma patients receiving biologics and factors associated with persistent insufficient control: a real-life national study. Ther Adv Respir Dis 2023; 17:17534666231202749. [PMID: 37966015 PMCID: PMC10655663 DOI: 10.1177/17534666231202749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/22/2023] [Indexed: 11/16/2023] Open
Abstract
BACKGROUND Biological therapies have revolutionized the treatment of severe asthma with type 2 inflammation. Although such treatments are very effective in reducing exacerbation and the dose of oral steroids, little is known about the persistence of symptoms in severe asthma patients treated with biologics. PURPOSE We aim to describe asthma control and healthcare consumption of severe asthma patients treated with biologics. DESIGN The Second Souffle study is a real-life prospective observational study endorsed by the Clinical Research Initiative in Severe Asthma: a Lever for Innovation & Science Network. METHODS Adults with a confirmed diagnosis of severe asthma for at least 12 months' duration were enrolled in the study. A self-administered questionnaire including the Asthma Control Questionnaire (ACQ), Asthma Quality of Life Questionnaire (AQLQ) and a compliance evaluation test was given to the patients. Healthcare consumption within 12 months prior to enrolment was documented. In patients receiving biologics, doctors indicated whether the patients were biologic responders or non-responders. RESULTS The characteristics of 431 patients with severe asthma were analysed. Among them, 409 patients (94.9%) presented asthma with type 2 inflammation (T2 high) profile, and 297 (72.6%) patients with a T2 high phenotype were treated with a biologic. Physicians estimated that 88.2% of patients receiving biologics were responders. However, asthma control was only achieved in 25.3% of those patients (ACQ > 0.75). A high proportion of patients (77.8%) identified as responders to biologics were not controlled according to the ACQ score. About 50% of patients continue to use oral corticosteroids either daily (25.2%) or more than three times a year for at least three consecutive days (25.6%). Gastro-oesophageal Reflux Disease (GERD) and Obstructive Sleep Apnoea syndrome (OSA) were identified as independent factors associated with uncontrolled asthma. CONCLUSION Although a high proportion of severe asthma patients respond to biologics, only 25.3% have controlled asthma. GERD and OSA are independent factors of uncontrolled asthma.
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Affiliation(s)
- Laurent Guilleminault
- Department of Respiratory Medicine, Faculty of Medicine, Toulouse University Hospital Centre, 24 chemin de Pouvourville, Toulouse 31059, France
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Inserm U1291, University of Toulouse, CNRS U5282, Toulouse, France
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
| | - Claire Camus
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
| | - Chantal Raherison-Semjen
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- University of French West Indies, Respiratory Diseases Department, Pointe -à Pitre, Guadeloupe
| | | | - Arnaud Bourdin
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Montpellier University Hospital, Montpellier, France
| | - Philippe Bonniaud
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Dijon University Hospital, Dijon, France
| | - Stéphanie Fry
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Lille University Hospital, Lille, France
| | - Gilles Devouassoux
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Lyon University Hospital, HCL, Lyon, France
| | - François-Xavier Blanc
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Nantes Université, CHU de Nantes, INSERM, Service de Pneumologie, CIC 1413, l’Institut du Thorax, Nantes, France
| | - Christophe Pison
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Grenoble University Hospital, Grenoble, France
| | - Clairelyne Dupin
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Bichat Hospital, AP-HP, Paris, France
| | - Naji Khayath
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Strasbourg University Hospital, Strasbourg, France
| | - Joelle Courdeau
- Respiratory Diseases Department, Bigorre Hospital, Tarbes, France
| | | | | | - Fabien Rolland
- Respiratory Diseases Department, Cannes Hospital, Cannes, France
| | - Carmen Lamandi
- Respiratory Diseases Department, GHRMSA Hospital, Mulhouse, France
| | - Alain Proust
- Respiratory Diseases Department, Nimes Hospital, Nîmes, France
| | - Anaig Ozier
- Respiratory Diseases Department, Saint Augustin Clinic, Bordeaux, France
| | - Laurent Portel
- Respiratory Diseases Department, Libourne Hospital, Libourne, France
| | - Wanda Gaspard
- Respiratory Diseases Department, Army Training Hospital HIA Percy Clamart, Clamart, France
| | - Pauline Roux-Claude
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Jean Minjoz University Hospital, Besançon, France
| | - Antoine Beurnier
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Department of Physiology – Function Tests, DMU 5 Thorinno, twin-site Hôpital Bicêtre (Le Kremlin Bicêtre) and Ambroise Paré (Boulogne-Billancourt), AP-HP, Paris, France
| | - Stéphanie Martinez
- Respiratory Diseases Department, Aix-en-Provence Hospital, Aix-en-Provence, France
| | - Jean-Marc Dot
- Respiratory Diseases Department, Médipôle Hospital, Villeurbanne, France
| | | | | | - Etienne Auvray
- Respiratory Diseases Department, Métropole Savoie Hospital, Chambéry, France
| | - Nicolas Paleiron
- Respiratory Diseases Department, Army Training Hospital HIA Ste Anne Toulon, Toulon, France
| | - Nicolas Just
- Respiratory Diseases Department, Roubaix Hospital, Roubaix, France
| | - Jean Miltgen
- Respiratory Diseases Department, Polyclinique Les Fleurs, Ollioules, France
| | - Maud Russier
- Respiratory Diseases Department, Orléans Regional Hospital, Orléans, France
| | - Cécile Olivier
- Respiratory Diseases Department, La Louvière Private Hospital, Lille, France
| | - Camille Taillé
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
- Respiratory Diseases Department, Bichat Hospital, AP-HP, Paris, France
| | - Alain Didier
- Department of Respiratory Medicine, Faculty of Medicine, Toulouse University Hospital Centre, 24 chemin de Pouvourville, Toulouse 31059, France
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Inserm U1291, University of Toulouse, CNRS U5282, Toulouse, France
- CRISALIS/F-CRIN INSERM Network, Toulouse, France
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Shrestha Palikhe N, Mackenzie CA, Licskai C, Kim RB, Vliagoftis H, Cameron L. The CRTh2 polymorphism rs533116 G > A associates with asthma severity in older females. Front Med (Lausanne) 2022; 9:970495. [PMID: 36314028 PMCID: PMC9606418 DOI: 10.3389/fmed.2022.970495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 09/22/2022] [Indexed: 12/03/2022] Open
Abstract
Background CRTh2 is G protein coupled receptor for prostaglandin D2 (PGD)2 expressed by immune cells that drive type 2 inflammation such as CD4+ T cells (Th2), eosinophils and group 2 innate lymphoid cells (ILC2) as well as structural cells including smooth muscle and epithelium. CRTh2-expressing cells are increased in the blood and airways of asthmatics and severe asthma is characterized by increased activity of the PGD2-CRTh2 pathway. The CRTh2 single nucleotide polymorphism (SNP) rs533116 G > A is associated with development of asthma and increased Th2 cell differentiation. Objective To examine whether CRTh2 rs533116G > A associates with asthma severity. Since severe asthma is more common in females than males, we performed a sex-stratified analysis. Methods Clinical data from asthmatics (n = 170) were obtained from clinic visits and chart review. Asthma severity was assessed according to ERS/ATS guidelines. Peripheral blood cells were characterized by flow cytometry and qRT-PCR. Genotyping was performed by TaqMan assay. Results Older females (≥45 years) homozygous for minor A allele of rs533116 were more likely to have severe asthma, lower FEV1, a higher prescribed dose of inhaled corticosteroid and more type 2 inflammation than females carrying GA or GG genotypes. Comparing females and males with the AA genotype also revealed that women had more type 2 inflammation. Conclusions and significance The polymorphism CRTh2 rs533116 G > A associates with severe asthma and type 2 inflammation in older females. This study reveals a gene-sex-aging interaction influencing the effect of CRTh2 on asthma severity.
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Affiliation(s)
- Nami Shrestha Palikhe
- Division of Pulmonary Medicine, Department of Medicine and Alberta Respiratory Centre, University of Alberta, Edmonton, AB, Canada
| | - Constance A. Mackenzie
- Division of Respirology, Department of Medicine, Western University, London, ON, Canada,Division of Clinical Pharmacology, Department of Medicine, Western University, London, ON, Canada,Division of Clinical Pharmacology and Toxicology, Ontario Poison Centre, The Hospital for Sick Children, Toronto, ON, Canada
| | - Christopher Licskai
- Division of Respirology, Department of Medicine, Western University, London, ON, Canada
| | - Richard B. Kim
- Division of Clinical Pharmacology, Department of Medicine, Western University, London, ON, Canada
| | - Harissios Vliagoftis
- Division of Pulmonary Medicine, Department of Medicine and Alberta Respiratory Centre, University of Alberta, Edmonton, AB, Canada
| | - Lisa Cameron
- Division of Pulmonary Medicine, Department of Medicine and Alberta Respiratory Centre, University of Alberta, Edmonton, AB, Canada,Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada,*Correspondence: Lisa Cameron,
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