Risk Factors and Biomarkers for Post-tuberculosis Lung Damage

Risk Factors and Biomarkers for Post-tuberculosis Lung Damage in a Chinese Cohort: Protocol for a Prospective Observational Study


Lead Sponsor: Peking University Third Hospital

Collaborator: Beijing Geriatric Hospital

Source Peking University Third Hospital
Brief Summary

This prospective study aims to determine the incidence of Post-tuberculosis lung damage (PTLD), examine trends in the changes in lung function, and investigate the impact of smoking and other factors on respiratory symptoms, lung function, and chest CT findings, which will aid in the development of prognostic and therapeutic strategies for PTLD.

Detailed Description

Introduction: Post-tuberculosis lung damage (PTLD) refers to residual pulmonary impairment following the completion of tuberculosis (TB) treatment, characterized by persistent respiratory symptoms and abnormal pulmonary function. The risk factors and biomarkers for PTLD have been scarcely investigated. Additionally, it remains unclear whether and to what extent cigarette smoking affects PTLD in patients with TB. Methods and analysis: This prospective observational study will enroll 400 adult male ever-smoker or never-smoker patients aged 25-60 years, with newly confirmed active TB between 2022 and 2024 from the Department of Respiratory and Critical Care Medicine at Peking University Third Hospital and the Tuberculosis Department at Beijing Geriatric Hospital. Baseline data (age, smoking history, and smoking pack-years), clinical symptoms, lung functions, and chest CT (computed tomography) findings will be prospectively collected. Respiratory questionnaires, lung function measurements, and chest CT examinations will be completed during follow-up visits at 6 months after the initiation of TB treatment, immediately at the completion of TB treatment, and at 1 year, 2 years, and 3 years after the completion of TB treatment. Peripheral blood samples will be obtained at baseline to measure inflammatory mediators and cytokines in serum. The collected data will be analyzed to determine the incidence of and factors/biomarkers for PTLD after TB treatment.

Overall Status Recruiting
Start Date 2022-01-01
Completion Date 2027-12-31
Primary Completion Date 2024-12-31
Study Type Observational
Primary Outcome
Measure Time Frame
lung function half a year, 1 year, 2 year, and 3-year follow-up
Secondary Outcome
Measure Time Frame
Absorption of TB lesions on lung CT scans after TB treatment half a year, 1 year, 2 year, and 3year follow-up
Enrollment 400

Intervention Type: Other

Intervention Name: no intervention

Description: no intervention; This study is a observational study. All patients received routine anti-tuberculosis regimen. Researchers will observe the clinical manifestation, pulmonary function and pulmonary CT manifestation within a few years after the cure of tuberculosis.

Arm Group Label: patients with pulmonary tuberculosis


Sampling Method:

Non-Probability Sample


Inclusion Criteria: Male patients aged 25-60 years newly diagnosed with active pulmonary TB. Exclusion Criteria: 1. patients with positive sputum smear or TB culture results; 2. human immunodeficiency virus-positive patients; 3. patients infected with multidrug-resistant TB; 4. patients with malignant neoplasms (e.g., lung cancer) or severe cardiovascular and cerebrovascular diseases; 5. non-compliant patients who were unable to complete the lung function tests; 6. patients without lung parenchymal destruction (such as tuberculous pleurisy). -



Gender Based:


Gender Description:

self-representation of gender identity

Minimum Age:

25 Years

Maximum Age:

60 Years

Healthy Volunteers:


Overall Official
Last Name Role Affiliation
Yongchang Sun, MD Study Director Respiratory and Critical Care Department, Peking University Third Hospital
Overall Contact

Last Name: Xiaoyan Gai, MD

Phone: 13522708870

Email: [email protected]

Facility: Status: Contact:
Peking University Third Hospital | Beijing, 100191, China Recruiting Xiaoyan Gai, MD. 008613522708870 [email protected]
Beijing Geriatric Hospital | Beijing, China Recruiting Wenli Cao, MD 13161220446 [email protected]
Location Countries


Verification Date


Responsible Party

Type: Sponsor

Has Expanded Access No
Condition Browse
Arm Group

Label: patients with pulmonary tuberculosis

Description: male patients aged 25-60 with active pulmonary tuberculosis

Patient Data Undecided
Study Design Info

Observational Model: Case-Only

Time Perspective: Prospective

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