Clinical OutcomesNCT04463134
An Observational Study on Patients With NTM Pulmonary Disease
An observational study of Clinical Outcomes, run by Chinese University of Hong Kong.
Trial summary
Non-tuberculous mycobacterial (NTM) infection is becoming more and more common, especially causing pulmonary diseases in those elderly or the immunocompromised. The diagnosis, treatment and monitoring of NTM pulmonary disease(NTMPD) are not updated and real life management if also challenging. Read more about this study
- Who is it for?
- Ages 18 to 100 years
- Conditions the study is for
- Clinical Outcomes
- What is being tested?
- NTM drug treatment
- How many people
- 50 participants
- Where
- No sites listed yet
- Study dates
- 1 Aug 2020to 31 Jul 2023
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 100 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Adults suspected NTMPD followed up in the Prince of Wales Hospital will be recruited
Who may be able to join
- Patients aged 18 or above
- Two or more respiratory samples positive for NTM, including sputum, tracheal aspirates, bronchial washing, bronchial aspirates, bronchial trap and bronchoalveolar lavage or lung biopsy
Who cannot join
- NTM isolates from extrapulmonary samples
- Refused to sign an informed consent
About this study
Official title: A Prospective Observational Study of Parameters Related to the Clinical Outcomes of NTM Pulmonary Disease in Prince of Wales Hospital
Non-tuberculous mycobacterial (NTM) infection is becoming more and more common, especially causing pulmonary diseases in those elderly or the immunocompromised. The diagnosis, treatment and monitoring of NTM pulmonary disease(NTMPD) are not updated and real life management if also challenging.
Read the detailed description
Non-tuberculous mycobacteria (NTM) are a large group of ubiquitous microorganisms in the natural environment as well as household water systems . Over 180 different species have been identified but only 32 are reported to cause diseases in human or animals. NTM infection can affect the lung, skin and soft tissue, lymph node or cause disseminated diseases in the immunocompromised. NTM pulmonary diseases are the most important disease entity, accounting for 75-94% of all clinically important NTM cases.
The predominant species and their pathogenicity vary in different countries. While Mycobacterium avium-intracellulare complex (MAC) is most prevalent in the USA, Canada, Australia, Japan, Taiwan and Hong Kong, M. abscessus complex is more common in Singapore and M. Kansasii in European counties, respectively. Recently reports showed an increasing trend in importance of NTM PD in a few countries.
NTM can cause chronic and debilitating pulmonary disease with increased morbidity and even mortality. Healthy individuals can be affected though many have underlying structural lung diseases or immunodeficient conditions. Patients usually present with nonspecific symptoms, including productive cough, dyspnea, hemoptysis, fever, weight loss and malaise. Therefore, the diagnosis of NTM pulmonary disease (NTMPD) is challenging requiring comprehensive clinical, microbiological and radiological data according to in the American Thoracic Society and Infectious Diseases Society of America (ATS/IDSA) 2007 guidelines. Treatment of NTMPD is also a difficult decision because some remain stable for a long period without treatment while the others progress to severe and even fatal diseases. A prolonged course of antibiotic involving multiple agents with potential adverse effects is needed but a cure cannot be guaranteed. Moreover, the treatment regimens might be different from those recommended by the international guidelines after balancing multiple factors, including patients' comorbidities, disease severity, and the species and antimicrobial susceptibility of the causative organism. Therefore, whom to treat, when to start and how to treat is a clinical dilemma. Epidemiological data of NTM remains unclear although an increase in prevalence and incidence are consistently observed globally. It is not a notifiable disease in most of the countries and data mainly comes from sentinel surveillance and microbiological results.
Local epidemiological data of NTM infection in Hong Kong is largely scarce apart from a small study done 25 years ago in 1995. Further local investigation on the epidemiology, disease course and clinical practice is needed to optimize their management.
- Conditions
- Clinical Outcomes
- Being tested
- NTM drug treatment
- Keywords
- Disease progression, death
- Medical subject headings
- Disease Progression, Death
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
NTM drug treatmentDrug
Also called pharmacological treatment
NTM drug treatment according to guideline and sensitivity test results
| Study group | Role | What they receive |
|---|---|---|
| Treatment group | They will start pharmacological treatment according to guidelines and sensitivity Receives: Drug: NTM drug treatment | |
| Observation group | They will not start pharmacological treatment. They will be monitored on symptoms, sputum conversion and radiological progression |
What is being measured
The primary outcome is the main question the study is designed to answer.
Clinical outcomes of NTMPD patients with or without treatment in 1 year
Clinical outcomes include stable disease, disease progression, chest infection, death.
Measured: 1 year
Secondary outcomes (4)
Clinical parameters that predict the disease progression
Clinical parameters include demographics and comorbidities.
Measured: 1 year
Functional
functional capacity of patients including mobility, exercise tolerance, lung function
Measured: 1 year
Microbiological parameters that predict disease progression
species subtypes, smear positivity and drug resistance
Measured: 1 year
Radiological features that predict disease progression
Pattern and extent of lung involvement
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Jul 2020
- Study start1 Aug 2020 (estimated)
- Primary completion31 Jul 2022 (estimated)
- Study completion31 Jul 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (23)Papers the sponsor has linked to this study.
- Other trials for Clinical OutcomesStudies of the same condition, open and under way.
- More trials run by Chinese University of Hong KongThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 50 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Chinese University of Hong Kong
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, LAI PING LO, Chinese University of Hong Kong
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04463134
- Sponsor's protocol ID
- 2020.123
- Status last verified
- Jul 2020
- First submitted
- 29 Jun 2020
- Last updated
- 14 Jul 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Falkinham JO 3rd. Environmental sources of nontuberculous mycobacteria. Clin Chest Med. 2015 Mar;36(1):35-41. doi: 10.1016/j.ccm.2014.10.003. Epub 2014 Nov 6.
PubMed 25676517Gebert MJ, Delgado-Baquerizo M, Oliverio AM, Webster TM, Nichols LM, Honda JR, Chan ED, Adjemian J, Dunn RR, Fierer N. Ecological Analyses of Mycobacteria in Showerhead Biofilms and Their Relevance to Human Health. mBio. 2018 Oct 30;9(5):e01614-18. doi: 10.1128/mBio.01614-18.
PubMed 30377276Gupta RS, Lo B, Son J. Phylogenomics and Comparative Genomic Studies Robustly Support Division of the Genus Mycobacterium into an Emended Genus Mycobacterium and Four Novel Genera. Front Microbiol. 2018 Feb 13;9:67. doi: 10.3389/fmicb.2018.00067. eCollection 2018.
PubMed 29497402Henkle E, Winthrop KL. Nontuberculous mycobacteria infections in immunosuppressed hosts. Clin Chest Med. 2015 Mar;36(1):91-9. doi: 10.1016/j.ccm.2014.11.002. Epub 2014 Dec 23.
PubMed 25676522Johnson MM, Odell JA. Nontuberculous mycobacterial pulmonary infections. J Thorac Dis. 2014 Mar;6(3):210-20. doi: 10.3978/j.issn.2072-1439.2013.12.24.
PubMed 24624285Zweijpfenning SMH, Ingen JV, Hoefsloot W. Geographic Distribution of Nontuberculous Mycobacteria Isolated from Clinical Specimens: A Systematic Review. Semin Respir Crit Care Med. 2018 Jun;39(3):336-342. doi: 10.1055/s-0038-1660864. Epub 2018 Aug 2.
PubMed 30071548Prevots DR, Shaw PA, Strickland D, Jackson LA, Raebel MA, Blosky MA, Montes de Oca R, Shea YR, Seitz AE, Holland SM, Olivier KN. Nontuberculous mycobacterial lung disease prevalence at four integrated health care delivery systems. Am J Respir Crit Care Med. 2010 Oct 1;182(7):970-6. doi: 10.1164/rccm.201002-0310OC. Epub 2010 Jun 10.
PubMed 20538958Namkoong H, Kurashima A, Morimoto K, Hoshino Y, Hasegawa N, Ato M, Mitarai S. Epidemiology of Pulmonary Nontuberculous Mycobacterial Disease, Japan. Emerg Infect Dis. 2016 Jun;22(6):1116-7. doi: 10.3201/eid2206.151086. No abstract available.
PubMed 27191735Kim HO, Lee K, Choi HK, Ha S, Lee SM, Seo GH. Incidence, comorbidities, and treatment patterns of nontuberculous mycobacterial infection in South Korea. Medicine (Baltimore). 2019 Nov;98(45):e17869. doi: 10.1097/MD.0000000000017869.
PubMed 31702652Morimoto K, Iwai K, Uchimura K, Okumura M, Yoshiyama T, Yoshimori K, Ogata H, Kurashima A, Gemma A, Kudoh S. A steady increase in nontuberculous mycobacteriosis mortality and estimated prevalence in Japan. Ann Am Thorac Soc. 2014 Jan;11(1):1-8. doi: 10.1513/AnnalsATS.201303-067OC.
PubMed 24102151Vinnard C, Longworth S, Mezochow A, Patrawalla A, Kreiswirth BN, Hamilton K. Deaths Related to Nontuberculous Mycobacterial Infections in the United States, 1999-2014. Ann Am Thorac Soc. 2016 Nov;13(11):1951-1955. doi: 10.1513/AnnalsATS.201606-474BC.
PubMed 27607541Griffith DE, Aksamit T, Brown-Elliott BA, Catanzaro A, Daley C, Gordin F, Holland SM, Horsburgh R, Huitt G, Iademarco MF, Iseman M, Olivier K, Ruoss S, von Reyn CF, Wallace RJ Jr, Winthrop K; ATS Mycobacterial Diseases Subcommittee; American Thoracic Society; Infectious Disease Society of America. An official ATS/IDSA statement: diagnosis, treatment, and prevention of nontuberculous mycobacterial diseases. Am J Respir Crit Care Med. 2007 Feb 15;175(4):367-416. doi: 10.1164/rccm.200604-571ST. No abstract available.
PubMed 17277290Hwang JA, Kim S, Jo KW, Shim TS. Natural history of Mycobacterium avium complex lung disease in untreated patients with stable course. Eur Respir J. 2017 Mar 8;49(3):1600537. doi: 10.1183/13993003.00537-2016. Print 2017 Mar.
PubMed 28275170Park J, Cho J, Lee CH, Han SK, Yim JJ. Progression and Treatment Outcomes of Lung Disease Caused by Mycobacterium abscessus and Mycobacterium massiliense. Clin Infect Dis. 2017 Feb 1;64(3):301-308. doi: 10.1093/cid/ciw723. Epub 2016 Nov 10.
PubMed 28011609Igari H, Yamagishi K, Yamazaki S, Murata S, Yahaba M, Takayanagi S, Kawasaki Y, Taniguchi T. A retrospective observational study of antimicrobial treatment for non-tuberculous mycobacteria disease using a nationwide claims database in Japan. J Infect Chemother. 2020 Apr;26(4):349-352. doi: 10.1016/j.jiac.2019.10.009. Epub 2019 Nov 11.
PubMed 31727566
Study at a glance
From the registry record, last updated by the sponsor on 14 Jul 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Prospective Observational Study of Parameters Related to the Clinical Outcomes of NTM Pulmonary Disease in Prince of Wales Hospital
- ClinicalTrials.gov ID
- NCT04463134
- Acronym / sponsor ID
- 2020.123
- Conditions
- Clinical Outcomes
- Keywords
- Disease progression, death
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 50 participants (estimated)
- Lead sponsor
- Chinese University of Hong KongUniversity, hospital or other
- Study start
- 1 Aug 2020 (estimated)
- Primary completion
- 31 Jul 2022 (estimated)
- Study completion
- 31 Jul 2023 (estimated)
- First posted
- 9 Jul 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Non-tuberculous mycobacterial (NTM) infection is becoming more and more common, especially causing pulmonary diseases in those elderly or the immunocompromised. The diagnosis, treatment and monitoring of NTM pulmonary disease(NTMPD) are not updated and real life management if also challenging.
Detailed description
Non-tuberculous mycobacteria (NTM) are a large group of ubiquitous microorganisms in the natural environment as well as household water systems . Over 180 different species have been identified but only 32 are reported to cause diseases in human or animals. NTM infection can affect the lung, skin and soft tissue, lymph node or cause disseminated diseases in the immunocompromised. NTM pulmonary diseases are the most important disease entity, accounting for 75-94% of all clinically important NTM cases.
The predominant species and their pathogenicity vary in different countries. While Mycobacterium avium-intracellulare complex (MAC) is most prevalent in the USA, Canada, Australia, Japan, Taiwan and Hong Kong, M. abscessus complex is more common in Singapore and M. Kansasii in European counties, respectively. Recently reports showed an increasing trend in importance of NTM PD in a few countries.
NTM can cause chronic and debilitating pulmonary disease with increased morbidity and even mortality. Healthy individuals can be affected though many have underlying structural lung diseases or immunodeficient conditions. Patients usually present with nonspecific symptoms, including productive cough, dyspnea, hemoptysis, fever, weight loss and malaise. Therefore, the diagnosis of NTM pulmonary disease (NTMPD) is challenging requiring comprehensive clinical, microbiological and radiological data according to in the American Thoracic Society and Infectious Diseases Society of America (ATS/IDSA) 2007 guidelines. Treatment of NTMPD is also a difficult decision because some remain stable for a long period without treatment while the others progress to severe and even fatal diseases. A prolonged course of antibiotic involving multiple agents with potential adverse effects is needed but a cure cannot be guaranteed. Moreover, the treatment regimens might be different from those recommended by the international guidelines after balancing multiple factors, including patients' comorbidities, disease severity, and the species and antimicrobial susceptibility of the causative organism. Therefore, whom to treat, when to start and how to treat is a clinical dilemma. Epidemiological data of NTM remains unclear although an increase in prevalence and incidence are consistently observed globally. It is not a notifiable disease in most of the countries and data mainly comes from sentinel surveillance and microbiological results.
Local epidemiological data of NTM infection in Hong Kong is largely scarce apart from a small study done 25 years ago in 1995. Further local investigation on the epidemiology, disease course and clinical practice is needed to optimize their management.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Treatment group | – | Drug: NTM drug treatmentThey will start pharmacological treatment according to guidelines and sensitivity |
| Observation group | – | –They will not start pharmacological treatment. They will be monitored on symptoms, sputum conversion and radiological progression |
Who may qualify
- Ages
- 18 to 100 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Adults suspected NTMPD followed up in the Prince of Wales Hospital will be recruited
Key inclusion criteria (2 listed)
- Patients aged 18 or above
- Two or more respiratory samples positive for NTM, including sputum, tracheal aspirates, bronchial washing, bronchial aspirates, bronchial trap and bronchoalveolar lavage or lung biopsy
Key exclusion criteria (2 listed)
- NTM isolates from extrapulmonary samples
- Refused to sign an informed consent
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| NTM drug treatmentAlso: pharmacological treatmentNTM drug treatment according to guideline and sensitivity test results | Drug | Treatment group |
Primary outcome
Clinical outcomes of NTMPD patients with or without treatment in 1 year
Time frame: 1 year
Clinical outcomes include stable disease, disease progression, chest infection, death.
4 secondary outcomes
Clinical parameters that predict the disease progression
Time frame: 1 year
Functional
Time frame: 1 year
Microbiological parameters that predict disease progression
Time frame: 1 year
Radiological features that predict disease progression
Time frame: 1 year
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Jul 2020.
- Background: PubMed 25676517Falkinham JO 3rd. Environmental sources of nontuberculous mycobacteria. Clin Chest Med. 2015 Mar;36(1):35-41. doi: 10.1016/j.ccm.2014.10.003. Epub 2014 Nov 6.
- Background: PubMed 30377276Gebert MJ, Delgado-Baquerizo M, Oliverio AM, Webster TM, Nichols LM, Honda JR, Chan ED, Adjemian J, Dunn RR, Fierer N. Ecological Analyses of Mycobacteria in Showerhead Biofilms and Their Relevance to Human Health. mBio. 2018 Oct 30;9(5):e01614-18. doi: 10.1128/mBio.01614-18.
- Background: PubMed 29497402Gupta RS, Lo B, Son J. Phylogenomics and Comparative Genomic Studies Robustly Support Division of the Genus Mycobacterium into an Emended Genus Mycobacterium and Four Novel Genera. Front Microbiol. 2018 Feb 13;9:67. doi: 10.3389/fmicb.2018.00067. eCollection 2018.
- Background: PubMed 25676522Henkle E, Winthrop KL. Nontuberculous mycobacteria infections in immunosuppressed hosts. Clin Chest Med. 2015 Mar;36(1):91-9. doi: 10.1016/j.ccm.2014.11.002. Epub 2014 Dec 23.
- Background: PubMed 24624285Johnson MM, Odell JA. Nontuberculous mycobacterial pulmonary infections. J Thorac Dis. 2014 Mar;6(3):210-20. doi: 10.3978/j.issn.2072-1439.2013.12.24.
- Background: PubMed 30071548Zweijpfenning SMH, Ingen JV, Hoefsloot W. Geographic Distribution of Nontuberculous Mycobacteria Isolated from Clinical Specimens: A Systematic Review. Semin Respir Crit Care Med. 2018 Jun;39(3):336-342. doi: 10.1055/s-0038-1660864. Epub 2018 Aug 2.
- Background: PubMed 20538958Prevots DR, Shaw PA, Strickland D, Jackson LA, Raebel MA, Blosky MA, Montes de Oca R, Shea YR, Seitz AE, Holland SM, Olivier KN. Nontuberculous mycobacterial lung disease prevalence at four integrated health care delivery systems. Am J Respir Crit Care Med. 2010 Oct 1;182(7):970-6. doi: 10.1164/rccm.201002-0310OC. Epub 2010 Jun 10.
- Background: PubMed 27191735Namkoong H, Kurashima A, Morimoto K, Hoshino Y, Hasegawa N, Ato M, Mitarai S. Epidemiology of Pulmonary Nontuberculous Mycobacterial Disease, Japan. Emerg Infect Dis. 2016 Jun;22(6):1116-7. doi: 10.3201/eid2206.151086. No abstract available.
- Background: PubMed 31702652Kim HO, Lee K, Choi HK, Ha S, Lee SM, Seo GH. Incidence, comorbidities, and treatment patterns of nontuberculous mycobacterial infection in South Korea. Medicine (Baltimore). 2019 Nov;98(45):e17869. doi: 10.1097/MD.0000000000017869.
- Background: PubMed 24102151Morimoto K, Iwai K, Uchimura K, Okumura M, Yoshiyama T, Yoshimori K, Ogata H, Kurashima A, Gemma A, Kudoh S. A steady increase in nontuberculous mycobacteriosis mortality and estimated prevalence in Japan. Ann Am Thorac Soc. 2014 Jan;11(1):1-8. doi: 10.1513/AnnalsATS.201303-067OC.
- Background: PubMed 27607541Vinnard C, Longworth S, Mezochow A, Patrawalla A, Kreiswirth BN, Hamilton K. Deaths Related to Nontuberculous Mycobacterial Infections in the United States, 1999-2014. Ann Am Thorac Soc. 2016 Nov;13(11):1951-1955. doi: 10.1513/AnnalsATS.201606-474BC.
- Background: PubMed 17277290Griffith DE, Aksamit T, Brown-Elliott BA, Catanzaro A, Daley C, Gordin F, Holland SM, Horsburgh R, Huitt G, Iademarco MF, Iseman M, Olivier K, Ruoss S, von Reyn CF, Wallace RJ Jr, Winthrop K; ATS Mycobacterial Diseases Subcommittee; American Thoracic Society; Infectious Disease Society of America. An official ATS/IDSA statement: diagnosis, treatment, and prevention of nontuberculous mycobacterial diseases. Am J Respir Crit Care Med. 2007 Feb 15;175(4):367-416. doi: 10.1164/rccm.200604-571ST. No abstract available.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Clinical Outcomes, run by Chinese University of Hong Kong.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 14 Jul 2020. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Clinical outcomes of NTMPD patients with or without treatment in 1 year (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04463134, which also lists 23 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Jul 2020.