Clinical trial Recruiting at 1 site Observational

Household water and home environments as sources of non-tuberculous mycobacteria in people with cystic fibrosis

Official title: Environmental Reservoirs of Non-tuberculous Mycobacteria in Cystic Fibrosis Households: A Case-control Study of Exposure Risk at Home

Run by Research Center Borstel · NCT07369414 · Data updated 2026-11-12

This study will test whether household water, dust, and soil carry non-tuberculous mycobacteria that could infect people with cystic fibrosis.

More Cystic Fibrosis (CF) trials

Quick facts

Study typeObservational
SexAll
Enrollment120 (estimated)
SponsorResearch Center Borstel
Academic / other
Locations2 sites (Borstel, Schleswig-Holstein and 1 other locations)
StatusRecruiting
StartedFebruary 16, 2026
Main results expectedDecember 2028
Study endsDecember 2030
Registry record updatedAugust 19, 2026
Trial IDNCT07369414 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are people with confirmed cystic fibrosis (of any age) who can give informed consent, including about 60 with documented NTM per ATS/IDSA criteria and available clinical isolates and 60 without known NTM as controls.

Probably not a fit

People without cystic fibrosis, those unable to provide informed consent, or participants without available clinical isolates may not receive direct personal benefit since the study is observational.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This multicenter case-control study will enroll about 120 people with cystic fibrosis in Germany, including roughly 60 with current or past pulmonary NTM infection and 60 without known NTM. Environmental samples (water, dust, and soil) will be collected from participants' homes and analyzed by culture, PCR, and whole-genome sequencing. Findings in case and control households will be compared and any environmental isolates will be genetically compared with available clinical isolates. Standardized questionnaires and up to three years of follow-up for new NTM infections will be used to link environmental and behavioral risk factors to infection risk, and no additional medical procedures are required.

Why it matters

Potential benefit: If successful, the results could help patients by identifying household sources of NTM and informing practical prevention guidance to reduce future infections.

How similar studies have gone: Previous studies using environmental sampling and whole-genome sequencing have sometimes found matching household and patient strains, but results have been variable and not definitive.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Confirmed diagnosis of cystic fibrosis (CF)
* No age restriction (including minors with consent from legal guardians)
* Written informed consent to participate in the study (or consent provided by a legal guardian for minors)
* In the case of an NTM infection: diagnosis according to ATS/IDSA criteria and availability of a clinical NTM isolate

Exclusion Criteria:

* Lack of capacity to provide informed consent, refusal to participate, or withdrawal of informed consent

Where it's running

  • National and WHO-Supranational Reference Center for Mycobacteria, Research Center Borstel, Leibniz Lung Center
    Borstel, Schleswig-Holstein, Germany
    Recruiting
  • Klinik für Pneumologie, Universitätsklinikum Essen
    Essen, Germany
    Not yet recruiting

Study contacts

  • Principal investigator: Alexander Mischnik, Prof. Dr. med. — National and WHO-Supranational Reference Center for Mycobacteria, Research Center Borstel, Leibniz Lung Center
  • Study coordinator: Margo Diricks, PhD
  • Email: mdiricks@fz-borstel.de
  • Phone: +49 4537 / 188-7540

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.