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Ghanei M, Ghalebaghi B, Sami R, Torabizadeh M, Mirsadraee M, Amra B, Tavakol M, Raji H, Fallahpour M, Kiani A, Abedini A, Jabbari Azad F, Mahdaviani SA, Attaran D, Samet M, Tavana S, Haddadzadeh shoushtari M, Nazari J, AghaeiMeybodi F, Fazlollahi MR, Ghasemi R, Sabzvari A, Kafi H, Idani E. Efficacy and safety of a proposed omalizumab biosimilar compared to the reference product in the management of uncontrolled moderate-to-severe allergic asthma: a multicenter, phase III, randomized, double-blind, equivalency clinical trial. Front Immunol 2024; 15:1425906. [PMID: 39136011 PMCID: PMC11317399 DOI: 10.3389/fimmu.2024.1425906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 06/25/2024] [Indexed: 08/15/2024] Open
Abstract
Background and aims Allergic asthma has a considerable burden on the quality of life. A significant portion of moderate-to-severe allergic asthma patients need omalizumab, an anti-immunoglobulin-E monoclonal antibody, as an add-on therapy. In this phase III clinical trial P043 (Zerafil®, CinnaGen, Iran) efficacy, safety, and immunogenicity were compared with Xolair® (the originator omalizumab). The primary outcome was the rate of protocol-defined asthma exacerbations. Methods Exacerbation rates, Asthma Control Test (ACT) results, spirometry measurements, immunogenicity, and safety were evaluated. Each subject received either medication with a dose ranging from 150 to 375 mg based on pre-treatment serum total IgE level (IU/mL) and body weight (kg) every two or four weeks for a duration of 28 weeks. Results Exacerbation rates were 0.150 (CI: 0.079-0.220) in the P043 group, and 0.190 (CI: 0.110-0.270) in the omalizumab group (per-protocol). The least squares mean differences of predicted Forced Expiratory Volume in the First second (FEV1) were -2.51% (CI: -7.17-2.15, P=0.29) and -3.87% (CI: -8.79-1.04, P=0.12), pre- and post-bronchodilator use. The mean ± SD of ACT scores at the screening and the last visit were 10.62 ± 2.93 and 20.93 ± 4.26 in P043 and 11.09 ± 2.75 and 20.46 ± 5.11 in the omalizumab group. A total of 288 adverse events were reported for the 256 enrolled participants. Among all, "dyspnea" and "headache" were the most reported ones. The overall incidence of adverse events (P=0.62) and serious adverse events (P=0.07) had no significant differences between the two groups. None of the samples were positive for anti-drug antibodies. Conclusion P043 was equivalent to omalizumab in the management of asthma in reduction of exacerbations. There was no significant difference in other efficacy and safety parameters. Clinical trial registration www.clinicaltrials.gov (NCT05813470) and www.IRCT.ir (IRCT20150303021315N20).
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Affiliation(s)
- Mostafa Ghanei
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Babak Ghalebaghi
- Ear, Nose, Throat and Head and Neck Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ramin Sami
- Department of Internal Medicine, School of Medicine, Khorshid Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehdi Torabizadeh
- Golestan Hospital Clinical Research Development Unit, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Majid Mirsadraee
- Department of Internal Medicine, Islamic Azad University, Mashhad, Iran
| | - Babak Amra
- Bamdad Respiratory and Sleep Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Marzieh Tavakol
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Hanieh Raji
- Department of Internal Medicine, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Morteza Fallahpour
- Allergy Department, Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Arda Kiani
- Tracheal Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences and Health Services, Tehran, Iran
| | - Atefeh Abedini
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences and Health Services, Tehran, Iran
| | | | - Seyed Alireza Mahdaviani
- Pediatric Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davood Attaran
- Respiratory & Critical Care Division, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Samet
- Department of Internal Medicine, Division of Pulmonology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Sasan Tavana
- Department of Pulmonary Medicine, Clinical Research and Development Center, Shahid Modarres Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Haddadzadeh shoushtari
- Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Javad Nazari
- Lung Department, Ebnesina Hospital, Tehran, Iran
| | - FatemehAlsadat AghaeiMeybodi
- Department of Internal Medicine, Division of Pulmonology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohammad Reza Fazlollahi
- Immunology, Asthma and Allergy Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Ghasemi
- Eisabne Maryam Hospital, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Araz Sabzvari
- CinnaGen Medical Biotechnology Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Hamidreza Kafi
- Medical Department, Orchid Pharmed Company, Tehran, Iran
| | - Esmaeil Idani
- Pulmonary Rehabilitation Research Center (PRRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Pianigiani T, Luzzi S, Dilroba A, Meocci M, Salvadori E, Alderighi L, Bergantini L, d'Alessandro M, Sestini P, Bargagli E, Cameli P. Evaluation of multiple-flows exhaled nitric oxide and its clinical significance in severe asthmatic patients treated with biologics: a prospective real-life study. J Asthma 2024:1-10. [PMID: 38884564 DOI: 10.1080/02770903.2024.2370012] [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: 05/07/2024] [Accepted: 06/16/2024] [Indexed: 06/18/2024]
Abstract
BACKGROUND Specific biomarkers, such as eosinophilia in peripheral blood or fractional exhaled nitric oxide (FeNO), can guide us in the choice of biologic therapy, allowing a more personalized approach. Although there are multiple evidences in the literature about the role of FeNO as a predictor of response to different biologic treatments, there are no data on the relationship between FeNO changes and clinical response to the four biologic drugs currently in use. OBJECTIVE To evaluate and to compare the expression of multiple-flows FeNO parameters in a cohort of patients with severe asthma (SA) before and during the treatment with biologics to evaluate the performance of these biomarkers in predicting the achievement of clinical remission. METHODS We prospectively enrolled 50 patients with severe asthma eligible for biologic therapy. Patients underwent clinical and functional monitoring at baseline (T0) and after 1, 6, and 12 months of treatment (T1, T6, T12), including multiple flows FeNO assessment. RESULTS A statistically significant reduction of FeNO50 values and J'awNO was observed only in benralizumab and dupilumab subgroups. Among biomarkers, the reduction of FeNO 50 values at T1 was associated with a higher probability of achieving clinical remission at T12 (p = 0.003), which was also confirmed by ROC curve analysis (AUC 0.758, p = 0.002; sensitivity 60% and specificity 74% for a reduction of 16 ppb). CONCLUSION These data confirm the potential of this biomarker in predicting clinical response to biologic treatment in patients with severe asthma in order to guide clinical decisions and evaluate a shift to other biologic therapy.
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Affiliation(s)
- Tommaso Pianigiani
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Simona Luzzi
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Akter Dilroba
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Martina Meocci
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Elisa Salvadori
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Lorenzo Alderighi
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Laura Bergantini
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Miriana d'Alessandro
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Piersante Sestini
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Elena Bargagli
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
| | - Paolo Cameli
- Respiratory Diseases Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
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3
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Denton E, Hew M, Peters MJ, Upham JW, Bulathsinhala L, Tran TN, Martin N, Bergeron C, Al-Ahmad M, Altraja A, Larenas-Linnemann D, Murray R, Celis-Preciado CA, Al-Lehebi R, Belhassen M, Bhutani M, Bosnic-Anticevich SZ, Bourdin A, Brusselle GG, Busby J, Canonica GW, Heffler E, Chapman KR, Charriot J, Christoff GC, Chung LP, Cosio BG, Côté A, Costello RW, Cushen B, Fingleton J, Fonseca JA, Gibson PG, Heaney LG, Huang EWC, Iwanaga T, Jackson DJ, Koh MS, Lehtimäki L, Máspero J, Mahboub B, Menzies-Gow AN, Mitchell PD, Papadopoulos NG, Papaioannou AI, Perez-de-Llano L, Perng DW, Pfeffer PE, Popov TA, Porsbjerg CM, Rhee CK, Roche N, Sadatsafavi M, Salvi S, Schmid JM, Sheu CC, Sirena C, Torres-Duque CA, Salameh L, Patel PH, Ulrik CS, Wang E, Wechsler ME, Price DB. Real-world biologics response and super-response in the International Severe Asthma Registry cohort. Allergy 2024. [PMID: 38923444 DOI: 10.1111/all.16178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 05/08/2024] [Accepted: 05/12/2024] [Indexed: 06/28/2024]
Abstract
BACKGROUND Biologic asthma therapies reduce exacerbations and long-term oral corticosteroids (LTOCS) use in randomized controlled trials (RCTs); however, there are limited data on outcomes among patients ineligible for RCTs. Hence, we investigated responsiveness to biologics in a real-world population of adults with severe asthma. METHODS Adults in the International Severe Asthma Registry (ISAR) with ≥24 weeks of follow-up were grouped into those who did, or did not, initiate biologics (anti-IgE, anti-IL5/IL5R, anti-IL4/13). Treatment responses were examined across four domains: forced expiratory volume in 1 second (FEV1) increase by ≥100 mL, improved asthma control, annualized exacerbation rate (AER) reduction ≥50%, and any LTOCS dose reduction. Super-response criteria were: FEV1 increase by ≥500 mL, new well-controlled asthma, no exacerbations, and LTOCS cessation or tapering to ≤5 mg/day. RESULTS 5.3% of ISAR patients met basic RCT inclusion criteria; 2116/8451 started biologics. Biologic initiators had worse baseline impairment than non-initiators, despite having similar biomarker levels. Half or more of initiators had treatment responses: 59% AER reduction, 54% FEV1 increase, 49% improved control, 49% reduced LTOCS, of which 32%, 19%, 30%, and 39%, respectively, were super-responses. Responses/super-responses were more frequent in biologic initiators than in non-initiators; nevertheless, ~40-50% of initiators did not meet response criteria. CONCLUSIONS Most patients with severe asthma are ineligible for RCTs of biologic therapies. Biologics are initiated in patients who have worse baseline impairments than non-initiators despite similar biomarker levels. Although biologic initiators exhibited clinical responses and super-responses in all outcome domains, 40-50% did not meet the response criteria.
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Affiliation(s)
- Eve Denton
- Allergy, Asthma & Clinical Immunology, Alfred Health, Melbourne, Victoria, Australia
- Department of Medicine, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Mark Hew
- Allergy, Asthma & Clinical Immunology, Alfred Health, Melbourne, Victoria, Australia
- Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Matthew J Peters
- Department of Thoracic Medicine, Concord Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - John W Upham
- Frazer Institute & PA-Southside Clinical Unit, The University of Queensland, Brisbane, Queensland, Australia
| | - Lakmini Bulathsinhala
- Optimum Patient Care Global, Cambridge, UK
- Observational and Pragmatic Research Institute, Singapore, Singapore
| | - Trung N Tran
- BioPharmaceuticals Medical, AstraZeneca, Gaithersburg, Maryland, USA
| | - Neil Martin
- BioPharmaceuticals Medical, AstraZeneca, Gaithersburg, Maryland, USA
- Department of Respiratory Medicine, University of Leicester, Leicester, UK
| | - Celine Bergeron
- Centre for Lung Health, Vancouver General Hospital, Vancouver, British Columbia, Canada
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Mona Al-Ahmad
- Microbiology Department, College of Medicine, Kuwait University, Kuwait City, Kuwait
- Al-Rashed Allergy Center, Ministry of Health, Kuwait City, Kuwait
| | - Alan Altraja
- Department of Pulmonology, University of Tartu and Lung Clinic, Tartu University Hospital, Tartu, Estonia
| | | | | | - Carlos Andrés Celis-Preciado
- Pulmonary Unit, Hospital Universitario San Ignacio, Bogota, Colombia
- Faculty of Medicine, Pontificia Universidad Javeriana, Bogota, Colombia
| | - Riyad Al-Lehebi
- Department of Pulmonology, King Fahad Medical City, Riyadh, Saudi Arabia
- Alfaisal University, Riyadh, Saudi Arabia
| | | | - Mohit Bhutani
- Department of Medicine, Division of Pulmonary Medicine, University of Alberta, Alberta, Canada
| | - Sinthia Z Bosnic-Anticevich
- Faculty of Medicine, Health and Human Sciences, Macquarie Medical School, Macquarie University, Sydney, New South Wales, Australia
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Arnaud Bourdin
- PhyMedExp, University of Montpellier, CNRS, INSERM, CHU Montpellier, Montpellier, France
| | - Guy G Brusselle
- Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
- Department of Epidemiology and Respiratory Medicine, Erasmus Medical Center Rotterdam, Rotterdam, the Netherlands
| | - John Busby
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Giorgio Walter Canonica
- Personalized Medicine, Asthma and Allergy, IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
| | - Enrico Heffler
- Personalized Medicine, Asthma and Allergy, IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
| | | | - Jérémy Charriot
- PhyMedExp, University of Montpellier, CNRS, INSERM, CHU Montpellier, Montpellier, France
| | | | - Li Ping Chung
- Fiona Stanley Hospital, Perth, Western Australia, Australia
| | - Borja G Cosio
- Son Espases University Hospital-IdISBa-Ciberes, Mallorca, Spain
| | - Andréanne Côté
- Department of Medicine, Laval University, Quebec City, Quebec, Canada
| | - Richard W Costello
- Department of Respiratory Medicine, Clinical Research Centre, Smurfit Building Beaumont Hospital, RCSI, Dublin, Ireland
| | - Breda Cushen
- Department of Respiratory Medicine, Beaumont Hospital, Dublin, Ireland
| | - James Fingleton
- Capital and Coast District Health Board, Wellington, New Zealand
| | - João A Fonseca
- CINTESIS@RISE, MEDCIDS, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Peter G Gibson
- Australian Severe Asthma Network, Priority Research Centre for Healthy Lungs, University of Newcastle, Newcastle, New South Wales, Australia
- Department of Respiratory and Sleep Medicine, Hunter Medical Research Institute, John Hunter Hospital, New Lambton Heights, New South Wales, Australia
| | - Liam G Heaney
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Erick Wan-Chun Huang
- Department of Internal Medicine, Division of Pulmonary Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | | | - David J Jackson
- Guy's Severe Asthma Centre, Guy's Hospital, King's College London, London, UK
| | - Mariko Siyue Koh
- Department of Respiratory and Critical Care Medicine, Singapore General Hospital, Singapore, Singapore
| | - Lauri Lehtimäki
- Allergy Centre, Tampere University Hospital, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jorge Máspero
- Clinical Research for Allergy and Respiratory Medicine, CIDEA Foundation, Buenos Aires, Argentina
- University Career of Specialists in Allergy and Clinical Immunology at the Buenos Aires University School of Medicine, Buenos Aires, Argentina
| | - Bassam Mahboub
- Rashid hospital, Dubai Health Authority (DHA), Dubai, United Arab Emirates
| | - Andrew N Menzies-Gow
- AstraZeneca, Cambridge, UK
- Lung Division, Royal Brompton & Harefield Hospital, London, UK
| | | | - Nikolaos G Papadopoulos
- Division of Infection, Immunity & Respiratory Medicine, University of Manchester, Manchester, UK
- Allergy Department, 2nd Pediatric Clinic, University of Athens, Athens, Greece
| | - Andriana I Papaioannou
- 2nd Respiratory Medicine Department, National and Kapodistrian University of Athens Medical School, Attikon University Hospital, Athens, Greece
| | - Luis Perez-de-Llano
- Pneumology Service, Lucus Augusti University Hospital, EOXI Lugo, Monforte, Cervo, Spain
| | - Diahn-Warng Perng
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Paul E Pfeffer
- Department of Respiratory Medicine, Barts Health NHS Trust, London, UK
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Todor A Popov
- University Hospital St. Ivan Rilski, Sofia, Bulgaria
| | - Celeste M Porsbjerg
- Department of Respiratory Medicine and Infectious Diseases, Research Unit, Bispebjerg Hospital, Copenhagen, Denmark
| | - Chin Kook Rhee
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Nicolas Roche
- Department of Respiratory Medicine, APHP-Centre University Paris Cité, Cochin Hospital and Institute (UMR1016), Paris, France
| | - Mohsen Sadatsafavi
- Respiratory Evaluation Sciences Program, Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Sundeep Salvi
- Pulmocare Research and Education Foundation, Pune, India
| | | | - Chau-Chyun Sheu
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Internal Medicine, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | | | - Carlos A Torres-Duque
- CINEUMO, Respiratory Research Center, Fundación Neumológica Colombiana, Bogotá, Colombia
- Universidad de La Sabana, Chia, Colombia
| | - Laila Salameh
- Rashid hospital, Dubai Health Authority (DHA), Dubai, United Arab Emirates
- College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Pujan H Patel
- Respiratory Medicine, Royal Brompton Hospital, London, UK
| | | | - Eileen Wang
- Department of Medicine, Division of Allergy and Clinical Immunology, National Jewish Health and University of Colorado School of Medicine, Denver, Colorado, USA
| | - Michael E Wechsler
- Department of Medicine, NJH Cohen Family Asthma Institute, National Jewish Health, Denver, Colorado, USA
| | - David B Price
- Optimum Patient Care Global, Cambridge, UK
- Observational and Pragmatic Research Institute, Singapore, Singapore
- Division of Applied Health Sciences, Centre of Academic Primary Care, University of Aberdeen, Aberdeen, UK
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Rojo-Tolosa S, Sánchez-Martínez JA, Pineda-Lancheros LE, Gálvez-Navas JM, González-Gutiérrez MV, Jiménez-Gálvez G, Pérez-Ramírez C, Morales-García C, Jiménez-Morales A. Influence of Genetics on the Response to Omalizumab in Patients with Severe Uncontrolled Asthma with an Allergic Phenotype. Int J Mol Sci 2023; 24:ijms24087029. [PMID: 37108192 PMCID: PMC10139019 DOI: 10.3390/ijms24087029] [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: 02/21/2023] [Revised: 04/06/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Omalizumab is a monoclonal antibody indicated for the treatment of severe uncontrolled asthma with an allergic phenotype. Its effectiveness could be influenced by clinical variables and single nucleotide polymorphisms (SNPs) in one or more of the genes involved in the mechanism of action and process of response to omalizumab, and these could be used as predictive biomarkers of response. We conducted an observational retrospective cohort study that included patients with severe uncontrolled allergic asthma treated with omalizumab in a tertiary hospital. Satisfactory response after 12 months of treatment was defined as (1) Reduction ≥ 50% of exacerbations or no exacerbations, (2) Improvement of lung function ≥ 10% FEV1, and (3) Reduction ≥ 50% of OCS courses or no OCS. Polymorphisms in the FCER1A (rs2251746, rs2427837), FCER1B (rs1441586, rs573790, rs1054485, rs569108), C3 (rs2230199), FCGR2A (rs1801274), FCGR2B (rs3219018, rs1050501), FCGR3A (rs10127939, rs396991), IL1RL1 (rs1420101, rs17026974, rs1921622), and GATA2 (rs4857855) genes were analyzed by real-time polymerase chain reaction (PCR) using TaqMan probes. A total of 110 patients under treatment with omalizumab were recruited. After 12 months of treatment, the variables associated with a reduction in exacerbations were the absence of polyposis (odds ratio [OR] = 4.22; 95% confidence interval [CI] = 0.95-19.63), IL1RL1 rs17026974-AG (OR = 19.07; 95% CI = 1.27-547), and IL1RL1 rs17026974-GG (OR = 16.76; 95% CI = 1.22-438.76). Reduction in oral corticosteroids (OCS) was associated with age of starting omalizumab treatment (OR = 0.95; 95% CI = 0.91-0.99) and blood eosinophil levels > 300 cells/µL (OR = 2.93; 95% CI = 1.01-9.29). Improved lung function showed a relationship to the absence of chronic obstructive pulmonary disease (COPD) (OR = 12.16; 95% CI = 2.45-79.49), FCGR2B rs3219018-C (OR = 8.6; 95% CI = 1.12-117.15), GATA2 rs4857855-T (OR = 15.98; 95% CI = 1.52-519.57) and FCGR2A rs1801274-G (OR = 13.75; 95% CI = 2.14-142.68; AG vs. AA and OR = 7.46; 95% CI = 0.94-89.12; GG vs. AA). Meeting one response criterion was related to FCER1A rs2251746-TT (OR = 24; 95% CI = 0.77-804.57), meeting two to age of asthma diagnosis (OR = 0.93; 95% CI = 0.88-0.99), and meeting all three to body mass index (BMI) < 25 (OR = 14.23; 95% CI = 3.31-100.77) and C3 rs2230199-C (OR = 3; 95% CI = 1.01-9.92). The results of this study show the possible influence of the polymorphisms studied on the response to omalizumab and the clinical benefit that could be obtained by defining predictive biomarkers of treatment response.
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Affiliation(s)
- Susana Rojo-Tolosa
- Respiratory Medicine Department, University Hospital Virgen de las Nieves, 18014 Granada, Spain
- Pharmacy Service, Pharmacogenetics Unit, University Hospital Virgen de las Nieves, 18014 Granada, Spain
- Center of Biomedical Research, Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "José Mataix", University of Granada, Avda. del Conocimiento s/n., 18016 Granada, Spain
| | | | - Laura Elena Pineda-Lancheros
- Pharmacy Service, Pharmacogenetics Unit, University Hospital Virgen de las Nieves, 18014 Granada, Spain
- Center of Biomedical Research, Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "José Mataix", University of Granada, Avda. del Conocimiento s/n., 18016 Granada, Spain
| | - José María Gálvez-Navas
- Pharmacy Service, Pharmacogenetics Unit, University Hospital Virgen de las Nieves, 18014 Granada, Spain
- Center of Biomedical Research, Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "José Mataix", University of Granada, Avda. del Conocimiento s/n., 18016 Granada, Spain
- Cancer Registry of Granada, Andalusian School of Public Health, Carretera del Observatorio, 4, 18011 Granada, Spain
| | | | - Gonzalo Jiménez-Gálvez
- Respiratory Medicine Department, University Hospital Virgen de las Nieves, 18014 Granada, Spain
| | - Cristina Pérez-Ramírez
- Center of Biomedical Research, Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology "José Mataix", University of Granada, Avda. del Conocimiento s/n., 18016 Granada, Spain
| | | | - Alberto Jiménez-Morales
- Pharmacy Service, Pharmacogenetics Unit, University Hospital Virgen de las Nieves, 18014 Granada, Spain
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