CI

At a glance

ClinicalIndex Comparison Record
Early Ph 1Completed· 14 enrolled / 14 target
Drug / intervention
Ozone +1 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03599206
NCT03599206Early Ph 1CompletedUpdate Overdue (0.2/mo)Completion was 31mo ago

CXCL10/CXCR3 Regulation of Ozone-Induced Epithelial Permeability

Robert Tighe, MD·interventional·Posted Jul 26, 2018·Updated Jun 15, 2026

In Brief

A Early Phase 1 clinical trial evaluating Ozone and Filtered Air for Environmental and Genetic Factors on Lung Function. Completed, enrolled 14 participants across 1 site.

Signals

Enrollment appears stalled

Detailed Summary

The purpose of this research study to understand how environmental and genetic factors may be involved in lung function. Study participants will undergo a 1-day screening that includes a blood draw and breathing testing, return for a two-day series of testing to include blood draw, and brief breathing test before and after an inhaled challenge with either filtered air (FA) or ozone (O3). Participants return the next day for a brief breathing test, a blood draw and a procedure called bronchoscopy to evaluate the lung after the challenge. Participants then return 18 - 20 days later to repeat the two-day series of testing to be challenged with the exposure not received on the first series, (FA or O3). Each visit will take about 3 - 3.5 hours. Follow-up phone calls from the study team will occur at 24 hours after each 2-day test series. Total study duration is about one to one-and a half months.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States
Collaborators--

Timeline

Early Ph 1CompletedFinished
20192020202120222023202420252026
First PostedJul 26, 2018
Enrollment StartAug 16, 2019
Primary CompletionNov 29, 2023
Study CompletionJan 24, 2024
TodayJul 2, 2026
Enrollment to primary: 4.3 yearsPosted 7.9 years ago

Arms & Interventions

Ozoneexperimental

Drug: Ozone
Filtered Airplacebo_comparator

Other: Filtered Air

Interventions

Ozonedrug

Subjects will perform alternating 15 minutes rest with 15 minutes treadmill walk exercise periods for 135 minutes in while breathing Ozone (O3).

Filtered Airother

Subjects will perform alternating 15 minutes rest with 15 minutes treadmill walk exercise periods for 135 minutes in while breathing filtered air.