Blood marker may predict lung disease worsening in NTM patients
NCT ID NCT05678166
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether a substance in the blood called soluble PD-1 can help predict if a certain type of lung disease caused by NTM bacteria will get worse. Researchers will follow 500 adults from different countries to see if higher levels of this marker are linked to more severe disease or death within two years. The goal is to find a simple way to identify who needs treatment early.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 500 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2023
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients with NTM-LD at National University Hospital, Taiwan ,Fukujuji Hospital, Japan and Seoul National University, Korea.
- Ages
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20 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age ≥ 20 years * NTM-LD: (N=250) Diagnosis is made on the basis of the guidelines produced by the American Thoracic Society.Patients have pulmonary symptoms with identified chest image and fit with the microbiology criteria. * NTM pulmonary colonizers and others: (N=100) Those without fulfilling the diagnostic criteria but having at least one set of positive sputum for MAC or patients infected with NTM other than MAC species. * Pulmonary tuberculosis (TB): (N=100) Those with respiratory specimen culture positive for Mycobacterium tuberculosis or typical TB pulmonary pathology. * Healthy control (N=50) Exclusion Criteria: * Patients who have acquired immunodeficiency syndrome
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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National Taiwan University Hospital
RECRUITINGTaipei, Taiwan
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