Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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NOT_YET_RECRUITING
230 participants
OBSERVATIONAL
2026-01-01
2026-12-31
Brief Summary
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The main question the study aims to answer is:
What is the prevalence of remission among adults with severe asthma in Thailand? Participants will complete questionnaires on asthma symptoms and undergo pulmonary function testing and a blood test once.
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Detailed Description
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Conditions
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Study Design
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COHORT
CROSS_SECTIONAL
Study Groups
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Severe asthma
Asthma that requires treatment with high-dose inhaled corticosteroids plus a second controller, or requires systemic corticosteroids for ≥50% of the previous year to prevent it from becoming uncontrolled, or remains uncontrolled despite this therapy.
Global Initiative for Asthma (GINA) and Asthma Control Test (ACT) questionnaires
GINA and ACT are questionnaires used to assess the level of asthma control.
Spirometry
Spirometry is a tool used to assess pulmonary function.
Fractional exhaled nitric oxide (FeNO) test
FeNO is a tool used to assess eosinophilic airway inflammation and asthma remission.
Blood eosinophil count (BEC)
BEC is a tool used to assess eosinophilic inflammation and asthma remission.
Interventions
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Global Initiative for Asthma (GINA) and Asthma Control Test (ACT) questionnaires
GINA and ACT are questionnaires used to assess the level of asthma control.
Spirometry
Spirometry is a tool used to assess pulmonary function.
Fractional exhaled nitric oxide (FeNO) test
FeNO is a tool used to assess eosinophilic airway inflammation and asthma remission.
Blood eosinophil count (BEC)
BEC is a tool used to assess eosinophilic inflammation and asthma remission.
Eligibility Criteria
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Inclusion Criteria
* age 18 years or older
Exclusion Criteria
18 Years
ALL
No
Sponsors
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Thammasat University
OTHER
Responsible Party
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Narongkorn Saiphoklang, MD
Associate Professor
Principal Investigators
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Narongkorn Saiphoklang
Role: PRINCIPAL_INVESTIGATOR
Thammasat University Faculty of Medicine
Central Contacts
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References
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McDowell PJ, McDowell R, Busby J, Eastwood MC, Patel PH, Jackson DJ, Mansur A, Patel M, Burhan H, Doe S, Chaudhuri R, Gore R, Dodd JW, Subramanian D, Brown T, Heaney LG; UK Severe Asthma Registry. Clinical remission in severe asthma with biologic therapy: an analysis from the UK Severe Asthma Registry. Eur Respir J. 2023 Dec 14;62(6):2300819. doi: 10.1183/13993003.00819-2023. Print 2023 Dec.
Tupper OD, Hakansson KEJ, Ulrik CS. Remission and Changes in Severity Over 30 Years in an Adult Asthma Cohort. J Allergy Clin Immunol Pract. 2021 Apr;9(4):1595-1603.e5. doi: 10.1016/j.jaip.2020.11.013. Epub 2020 Nov 19.
Chipps BE, Lugogo N, Carr W, Zhou W, Patel A, Carstens DD, Trudo F, Ambrose CS. On-treatment clinical remission of severe asthma with real-world longer-term biologic use. J Allergy Clin Immunol Glob. 2024 Oct 30;4(1):100365. doi: 10.1016/j.jacig.2024.100365. eCollection 2025 Feb.
Perez-de-Llano L, Scelo G, Tran TN, Le TT, Fageras M, Cosio BG, Peters M, Pfeffer PE, Al-Ahmad M, Al-Lehebi RO, Altraja A, Bergeron C, Bjermer LH, Bjerrum AS, Bulathsinhala L, Busby J, Cano Rosales DJ, Canonica GW, Carter VA, Charriot J, Christoff GC, Denton EJ, Dorscheid DR, Fernandez Sanchez MJ, Fonseca JA, Gibson PG, Goh CYY, Heaney LG, Heffler E, Hew M, Iwanaga T, Katial R, Koh MS, Kuna P, Larenas-Linnemann DES, Lehtimaki L, Mahboub B, Martin N, Matsumoto H, Menzies-Gow AN, Papadopoulos NG, Popov TA, Porsbjerg CM, Patel P, Rhee CK, Sadatsafavi M, Taille C, Torres-Duque CA, Tsai MJ, Ulrik CS, Upham JW, von Bulow A, Wang E, Wechsler ME, Price DB. Exploring Definitions and Predictors of Severe Asthma Clinical Remission after Biologic Treatment in Adults. Am J Respir Crit Care Med. 2024 Oct 1;210(7):869-880. doi: 10.1164/rccm.202311-2192OC.
Hansen S, Baastrup Sondergaard M, von Bulow A, Bjerrum AS, Schmid J, Rasmussen LM, Johnsen CR, Ingebrigtsen T, Hakansson KEJ, Johansson SL, Bisgaard M, Assing KD, Hilberg O, Ulrik C, Porsbjerg C. Clinical Response and Remission in Patients With Severe Asthma Treated With Biologic Therapies. Chest. 2024 Feb;165(2):253-266. doi: 10.1016/j.chest.2023.10.046. Epub 2023 Nov 3.
Holm M, Omenaas E, Gislason T, Svanes C, Jogi R, Norrman E, Janson C, Toren K; RHINE Study Group. Remission of asthma: a prospective longitudinal study from northern Europe (RHINE study). Eur Respir J. 2007 Jul;30(1):62-5. doi: 10.1183/09031936.00121705. Epub 2007 Mar 14.
Almqvist L, Ronmark E, Stridsman C, Backman H, Lindberg A, Lundback B, Hedman L. Remission of adult-onset asthma is rare: a 15-year follow-up study. ERJ Open Res. 2020 Nov 23;6(4):00620-2020. doi: 10.1183/23120541.00620-2020. eCollection 2020 Oct.
Other Identifiers
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MTU-EC-IM-0-283/68
Identifier Type: -
Identifier Source: org_study_id
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