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An Observational Cohort Study of Interstitial Lung Abnormalities (ILAs) in a Large Japanese Health Screening Population (Kumamoto ILA study in Japan: KILA-J)

An Observational Cohort Study of Interstitial Lung Abnormalities (ILAs) in a Large Japanese Health Screening Population (Kumamoto ILA study in Japan: KILA-J) - Kumamoto ILA study in Japan (KILA-J)

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000045149
Enrollment
1500
Registered
2021-12-01
Start date
2022-06-20
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

Progressive fibrosing interstitial lung diseases including idiopathic pulmonary fibrosis

Interventions

None listed

Sponsors

Department of Respiratory Medicine Kumamoto University Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Patients who have a finding suggestive of interstitial pneumonia at the JRCS Health Management Center (approximately 30,000 people per year in general medical examination), Center for Preventive Medicine at the Saiseikai Kumamoto Hospital (approximately 30,000 people per year in general medical examination), and other medical facilities, and ILA is observed in HRCT findings by thorough examination at Kumamoto University Hospital, JRCS, and Saiseikai Kumamoto Hospital. According to Reference 3), the diagnostic criteria for ILA are as follows: Abnormal shadows in the lung parenchyma such as reticular shadows and ground-glass opacity not due to gravity on the dorsal side of bilateral lower lobes, whose extent accounts for 5% or more of the lung field area.

Exclusion criteria

Exclusion criteria: 1) Patients who are confirmed to refuse to participate in the study after receiving an explanation of the contents released for opt-out. 2) Patients with interstitial pneumonia occurring in an acute or subacute course with no underlying confirmed or presumed chronic course. 3) Patients who are difficult to be followed up regularly due to circumstances such as residential areas. 4) Patients considered inappropriate for the study by the attending physician at the time of HRCT examination. E.g.) In case it is difficult to appropriately perform or evaluate the pulmonary function test or 6-minute walk test In case understanding of the disease status is not obtained. 5) Patients who are enrolled in interventional studies, such as clinical trial, for which participation in other observational studies has not been allowed. However, in the case of observational study, it is acceptable.

Design outcomes

Primary

MeasureTime frame
Annual frequency of cases diagnosed with IPF and PPF in Interstitial Lung Abnormality (ILA) cases by high resolution CT images in general medical examinees.

Secondary

MeasureTime frame
1) Frequency of ILA cases in all general medical examinations. 2) Frequency of chronic hypersensitivity pneumonia and interstitial pneumonia associated with collagen disease in patients diagnosed with PPF.

Countries

Japan

Contacts

Public ContactHidenori Ichiyasu

Kumamoto University Medical Sciences Department of Respiratory Medicine

ichiyasu@kumamoto-u.ac.jp096-373-5012

Outcome results

None listed

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