Examination of effects of bronchial thermoplasty on mediators in the respiratory tract, exercise induced asthma, asthma control and QOL and confirmation of safety

Examination of effects of bronchial thermoplasty on mediators in the respiratory tract, exercise induced asthma, asthma control and QOL and confirmation of safety - Examination of effects of bronchial BT on mediators in the respiratory tract, exercise induced asthma, asthma control and QOL and confirmation of safety

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000026578

Enrollment

Registered

2017-03-17

Start date

2017-01-21

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

severe refractory asthma

Interventions

BT is performed at least three weeks apart, and preformed three times in tota

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Adult (over 20 years) patients with severe refractory asthma who require regular maintenance medications of inhaled corticosteroids and a long-acting beta agonist.

Exclusion criteria

Exclusion criteria: Patients with BT contraindicated Patients incapable of general anesthesia Patients whose exercise stress test is considered contraindicated

Design outcomes

Primary

Measure	Time frame
Decrease rate of FEV 1 before and after exercise load at 52 weeks after the last BT	—

Countries

Japan

Contacts

Public ContactJohsuke Hara

Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University Department of Respiratory Medicine

hara0728@gmail.com076-265-2000

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026