NCT04919915 (HAPI) is a NA clinical trial of HEPA air cleaner in Asthma in Children, sponsored by University of Washington.

Who is sponsoring NCT04919915?

NCT04919915 is sponsored by University of Washington.

What drugs are being tested in NCT04919915?

Interventions in NCT04919915: HEPA air cleaner.

What condition does NCT04919915 study?

NCT04919915 studies Asthma in Children.

Is NCT04919915 still recruiting?

NCT04919915 is currently completed. Last updated 9 June 2021.

Last reviewed 2021-06-09 · How we verify

NCT04919915: HAPI

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Home Air in Agriculture: Pediatric Intervention Trial

Completed NA Last updated 9 June 2021

What this trial tests

NA trial testing HEPA air cleaner in Asthma in Children in 71 participants. Completed in 27 February 2019.

Timeline

14 July 2015

Primary endpoint
27 February 2019

27 February 2019

Quick facts

Lead sponsor	University of Washington
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	none
Primary purpose	prevention
Enrollment	71
Start date	14 July 2015
Primary completion	27 February 2019
Estimated completion	27 February 2019
Sites	1 location across United States

Drugs / interventions tested

HEPA air cleaner

Conditions studied

Asthma in Children — all drugs for Asthma in Children →

Sponsor

University of Washington

Who can join

Adults 6 to 12, any sex, with Asthma in Children. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

This study seeks to reduce exposure to asthmagens in the homes of a community of Latino children residing in an area of intense agricultural production in Eastern Washington by testing the effectiveness of an intervention (high efficiency particulate air filter- HEPA portable room air cleaners) plus asthma education to reduce indoor measures of particulate matter, ammonia, improve clinically relevant measures of asthma health, and reduce biomarkers of inflammation.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

Randomized trial of a portable HEPA air cleaner intervention to reduce asthma morbidity among Latino children in an agricultural community.
Drieling RL, Sampson PD, Krenz JE, Tchong French MI, et al · · 2022 · cited 27× · PMID 34980119 · DOI 10.1186/s12940-021-00816-w
Randomized Trial of a Portable HEPA Air Cleaner Intervention to Reduce Asthma Morbidity among Latino Children in an Agricultural Community
Drieling R, Sampson PD, Krenz JE, French MIT, et al · · 2021 · cited 1× · DOI 10.21203/rs.3.rs-621994/v1

Verify or expand the search:

Other recruiting trials for Asthma in Children

Currently open trials in the same condition.

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NCT06851715 — Improving Quality of Life for Teenagers With Asthma · NA · recruiting

Other University of Washington trials

Trials by the same sponsor.

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NCT07322341 — SX-682 and Atezolizumab for the Treatment of Advanced or Metastatic, Recurrent Non-small Cell Lung Cancer · Phase 2 · not yet recruiting
NCT07332351 — Neoadjuvant Intravesical Nadofaragene Firadenovec With Gemcitabine, Cisplatin and Durvalumab for the Treatment of Muscle · Phase 2 · not yet recruiting

Verify against primary sources

ClinicalTrials.gov — authoritative US registry record
WHO ICTRP — international registry index
EU Clinical Trials Register
Sponsor press releases (Google)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT04919915 (US National Library of Medicine, public domain)
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by University of Washington
Last refreshed: 9 June 2021

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04919915.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing