Could antibiotics tame sarcoidosis? new study investigates
NCT ID NCT05291468
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether a combination of two antibiotics (azithromycin and doxycycline) can reduce bacteria linked to sarcoidosis and lower inflammation. About 40 adults with biopsy-confirmed sarcoidosis and active inflammation on a PET scan will receive the antibiotics or a placebo. The goal is to see if targeting the bacteria improves disease activity and quality of life.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 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.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Biopsy proven sarcoidosis. * No treatment indication for the sarcoidosis * Inflammatory activity according to FDG-PET scan at baseline * SUVmax above 3 in the lung and/or above 5 in mediastinum/hili Exclusion Criteria: * Increased duration of QT interval (\>440ms for men and \>450ms for women) on ECG * Hearing deficits, as this is a possible side effect of azithromycin * Being pregnant or breastfeeding at time of inclusion
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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.
Contacts and locations
Locations
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St. Antonius Hospital
Nieuwegein, Utrecht, 3435 CM, Netherlands
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Other studies related to the condition(s) this trial covers.
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