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CompletedNCT04024423HALTNTMUpdated Dec 4, 2023

Healthcare-associated Links in Transmission of Nontuberculous Mycobacteria in Cystic Fibrosis

An observational study in Cystic Fibrosis and Nontuberculous Mycobacterium Infection, sponsored by National Jewish Health. Completed at 1 site in United States. Per ClinicalTrials.gov, last updated 2023-12-04.

Sponsored by National Jewish Health · Observational

Study type
Observational
Model
Other
Time perspective
Retrospective
Enrollment
100
Sex
All
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Study summary

Sources of NTM infection and modes of transmission among CF patients are poorly understood. Healthcare-associated transmission of NTM among CF patients has been suspected and is of growing concern for CF Centers. There is a need for a systematic evidence-based approach to investigating potential episodes of healthcare-associated transmission. Clusters of highly similar strains of NTM in CF patients cared for at the same CF Center may arise from healthcare sources including patient-to-patient transmission and/or acquisition from water sources within a healthcare setting. The primary objective of the study is to facilitate a standardized process by which CF Centers may perform data abstraction on patients identified with highly similar NTM isolates and determine if clustered NTM strains are related to strains isolated from healthcare setting water biofilm sources. HALT NTM is available to the entire CF Foundation Care Network, under a collaborative agreement, to initiate a standardized, independent, confidential, internal NTM outbreak investigation. Patients that are identified by whole genome sequencing as having highly similar NTM strains and receiving care in the same CF Care Center are eligible. The study's primary endpoint is to identify potential modes and sources of healthcare-associated acquisition of CF NTM, thereby revealing risk factors for NTM acquisition.

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Conditions studied

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In context

Mycobacterium Infections

136 studies on the registry are indexed under Mycobacterium Infections; 17 are open to participants now.

This study's enrollment of 100 is below the median of 150 across 54 observational studies indexed under Mycobacterium Infections.

Browse Mycobacterium Infections studies →

Lead sponsor

National Jewish Health is the lead sponsor of 108 studies on the registry; 14 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Participants with cystic fibrosis and growth of respiratory NTM on one or more occasion that have undergone whole genome sequencing of the NTM core genome at National Jewish Health.

Inclusion criteria

  • Participants with cystic fibrosis and respiratory NTM growth on one or more occasions

Exclusion criteria

Exclusion Criteria:

  • Participants without cystic fibrosis
  • Participants without pulmonary NTM growth
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Study design

Observational model
Other
Time perspective
Retrospective
Enrollment
100 participants (actual)
Patient registry
No
Biospecimen retention
Samples with dna

Groups and cohorts

  • Related M. abscess isolates

    Characterize the source(s) of direct or indirect patient-to-patient transmission of NTM within an individual CF healthcare setting among participants with highly related isolates.

    Other: Epidemiologic investigation

  • Unrelated M. abscessus isolates

    Characterize the source(s) of direct or indirect patient-to-patient transmission of NTM within an individual CF healthcare setting among participants with unrelated isolates.

    Other: Epidemiologic investigation

  • Related M. avium isolates

    Characterize the source(s) of direct or indirect patient-to-patient transmission of NTM within an individual CF healthcare setting among participants with highly related isolates.

    Other: Epidemiologic investigation

  • Unrelated M. avium isolates

    Characterize the source(s) of direct or indirect patient-to-patient transmission of NTM within an individual CF healthcare setting among participants with unrelated isolates.

    Other: Epidemiologic investigation

  • Related M. intracellulare isolates

    Characterize the source(s) of direct or indirect patient-to-patient transmission of NTM within an individual CF healthcare setting among participants with highly related isolates.

    Other: Epidemiologic investigation

  • Unrelated M. intracellulare isolates

    Characterize the source(s) of direct or indirect patient-to-patient transmission of NTM within an individual CF healthcare setting among participants with unrelated isolates.

    Other: Epidemiologic investigation

Interventions

  • OtherEpidemiologic investigation

    Identification of overlaps in source(s) of care between participants with NTM isolates in a Cystic Fibrosis Care Center.

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What researchers measure

Primary outcomes

  1. Number of cystic fibrosis participants with NTM isolates in related clusters and receiving care in the same Cystic Fibrosis Care Center as assessed by whole genome sequencing

    Retrospective epidemiologic study

    Time frame: Three years

  2. Number of cystic fibrosis participants with NTM isolates matching environmental isolates from the participant's Cystic Fibrosis Care Center as assessed by whole genome sequencing

    Retrospective epidemiologic study

    Time frame: Three years

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Study locations

1 site
  • National Jewish Health
    Denver, Colorado 80206, United States
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References and documents

Publications

  • Gross JE, Caceres S, Poch K, Hasan NA, Davidson RM, Epperson LE, Lipner E, Vang C, Honda JR, Strand M, Strong M, Saiman L, Prevots DR, Olivier KN, Nick JA. Healthcare-associated links in transmission of nontuberculous mycobacteria among people with cystic fibrosis (HALT NTM) study: Rationale and study design. PLoS One. 2021 Dec 20;16(12):e0261628. doi: 10.1371/journal.pone.0261628. eCollection 2021. PubMed 34929010 ↗

Study documents

  • Study protocol · May 8, 2020

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No — There is no plan to make IPD available to other researchers.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 4, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04024423
Lead sponsor
National Jewish Health
Collaborators
Cystic Fibrosis Foundation
Responsible party
Jane Gross (Assistant Professor, National Jewish Health) — Principal investigator
First posted
Jul 18, 2019
Start date
Jul 1, 2019
Primary completion
May 1, 2023
Completion
Jul 1, 2023
Last update
Dec 4, 2023

Study contacts

Jane E Gross, MD PhD
study director · National Jewish Health

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2023. You cannot join it, but the record below documents what was studied.

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