Prospective Study on the Efficacy and Safety of Bronchoalveolar Lavage Combined With Pathogen Metagenomic Sequencing Technology in the Diagnosis of Immune Checkpoint Inhibitor Associated Pneumonia

NCT ID: NCT06192303

Last Updated: 2024-01-05

Basic Information

• Recruitment Status: RECRUITING
• Total Enrollment: 104 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2023-01-01
• Study Completion Date: 2026-01-01

Brief Summary

Immune checkpoint inhibitor associated pneumonia (CIP) is a common immune related adverse reaction, accounting for 35% of all deaths. However, due to the lack of typical clinical symptoms and imaging manifestations, CIP needs to be differentiated from other diseases such as pulmonary infections and lung cancer progression. Currently, there is a lack of diagnostic gold standards, which belongs to exclusive diagnosis. Empirical diagnosis and treatment in clinical practice can easily lead to the abuse of hormones and antibiotics, and even misdiagnosis and mistreatment, resulting in patient death. Therefore, early identification of CIP and pulmonary infection is the key to successful diagnosis and treatment. The CIP diagnosis and treatment guidelines recommend performing bronchoalveolar lavage as appropriate, but there is still a lack of large-scale prospective clinical studies. The beneficial pathogen metagenomic sequencing technology for the diagnosis of pulmonary infections has not been mentioned. Our research group conducted a prospective clinical study for the first time to evaluate the effectiveness and safety of bronchoalveolar lavage combined with pathogen metagenomic sequencing technology in diagnosing CIP, explore biomarkers for diagnosing CIP, in order to improve the early diagnosis rate and treatment efficiency of CIP, and reduce the abuse of antibiotics and hormones.

Conditions

Immune Checkpoint Inhibitor Associated Pneumonia

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

CIP cohort

Bronchoalveolar lavage and pathogen metagenomic sequencing

Intervention Type: DIAGNOSTIC_TEST

After the patient is enrolled, traditional pathogen testing will be improved, and the clinical physician will make a preliminary diagnosis based on routine pathogen testing, clinical manifestations, infection indicators, and imaging. Within 24 hours of initial diagnosis, bronchoalveolar lavage and pathogen metagenomic sequencing were performed, and BALF mNGS results were fed back to clinical physicians (without interfering with clinical decision-making). Clinical treatment data of patients were collected at 72 hours, 7 days, 14 days, and 28 days after the start of treatment, and follow-up and efficacy evaluation were conducted. Finally, a review committee consisting of two senior respiratory physicians and one imaging physician conducted a systematic review of cases to make the final diagnosis of enrolled patients (as the gold standard), analyzing the accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of BALF mNGS in diagnosing CIP.

non CIP cohort

Bronchoalveolar lavage and pathogen metagenomic sequencing

Intervention Type: DIAGNOSTIC_TEST

After the patient is enrolled, traditional pathogen testing will be improved, and the clinical physician will make a preliminary diagnosis based on routine pathogen testing, clinical manifestations, infection indicators, and imaging. Within 24 hours of initial diagnosis, bronchoalveolar lavage and pathogen metagenomic sequencing were performed, and BALF mNGS results were fed back to clinical physicians (without interfering with clinical decision-making). Clinical treatment data of patients were collected at 72 hours, 7 days, 14 days, and 28 days after the start of treatment, and follow-up and efficacy evaluation were conducted. Finally, a review committee consisting of two senior respiratory physicians and one imaging physician conducted a systematic review of cases to make the final diagnosis of enrolled patients (as the gold standard), analyzing the accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of BALF mNGS in diagnosing CIP.

Interventions

Bronchoalveolar lavage and pathogen metagenomic sequencing

After the patient is enrolled, traditional pathogen testing will be improved, and the clinical physician will make a preliminary diagnosis based on routine pathogen testing, clinical manifestations, infection indicators, and imaging. Within 24 hours of initial diagnosis, bronchoalveolar lavage and pathogen metagenomic sequencing were performed, and BALF mNGS results were fed back to clinical physicians (without interfering with clinical decision-making). Clinical treatment data of patients were collected at 72 hours, 7 days, 14 days, and 28 days after the start of treatment, and follow-up and efficacy evaluation were conducted. Finally, a review committee consisting of two senior respiratory physicians and one imaging physician conducted a systematic review of cases to make the final diagnosis of enrolled patients (as the gold standard), analyzing the accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of BALF mNGS in diagnosing CIP.

Intervention Type: DIAGNOSTIC_TEST

Eligibility Criteria

Inclusion Criteria

1. Voluntarily sign an informed consent form;

2. Age range from 18 to 75 years old, regardless of gender;

3. Immunosuppressive host;

4. Symptoms, signs, or imaging signs of pneumonia are visible, and empirical anti infection treatment is ineffective.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Nanfang Hospital, Southern Medical University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Southern Medical University Nanfang Hospital

Guangzhou, Guangdong, China

Site Status: RECRUITING

Countries

China

Central Contacts

Xintong Huang

Role: CONTACT

1556807596@qq.com

8619355230761

Facility Contacts

Xintong Huang

Role: primary

1556807596@qq.com

8619355230761

Other Identifiers

NFEC-2023-276

Identifier Type: -

Identifier Source: org_study_id