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18.02.2024 | Research

Utilizing metagenomic next-generation sequencing for pathogen detection and diagnosis in lower respiratory tract infections in real-world clinical practice

verfasst von: Tangfeng Lv, Qi Zhao, Jia Liu, Song Wang, Weiwei Wu, Liyun Miao, Ping Zhan, Xiaoli Chen, Manman Huang, Mingxiang Ye, Qiuxiang Ou, Yeqing Zhang

Erschienen in: Infection | Ausgabe 2/2024

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Abstract

Background

Infectious etiologies of lower respiratory tract infections (LRTIs) by the conventional microbiology tests (CMTs) can be challenging. Metagenomic next-generation sequencing (mNGS) has great potential in clinical use for its comprehensiveness in identifying pathogens, particularly those difficult-to-culture organisms.

Methods

We analyzed a total of 205 clinical samples from 201 patients with suspected LRTIs using mNGS in parallel with CMTs. mNGS results were used to guide treatment adjustments for patients who had negative CMT results. The efficacy of treatment was subsequently evaluated in these patients.

Results

mNGS-detected microorganisms in 91.7% (188/205) of the clinical samples, whereas CMTs demonstrated a lower detection rate, identifying microorganisms in only 37.6% (77/205) of samples. Compared to CMT results, mNGS exhibited a detection sensitivity of 93.5% and 95.4% in all 205 clinical samples and 180 bronchoalveolar lavage fluid (BALF) samples, respectively. A total of 114 patients (114/201; 56.7%) showed negative CMT results, among which 92 received treatment adjustments guided by their positive mNGS results. Notably, 67.4% (62/92) of patients demonstrated effective treatment, while 25% (23/92) experienced a stabilized condition. Subgroup analysis of cancer patients revealed that 41.9% (13/31) exhibited an effective response to treatment, and 35.5% (11/31) maintained a stable condition following medication adjustments guided by mNGS.

Conclusion

mNGS demonstrated great potential in identifying microorganisms of clinical significance in LRTIs. The rapid turnaround time and reduced susceptibility to the impact of antimicrobial administration make mNGS a valuable supplementary tool for diagnosis and treatment decision-making for suspected LRTIs in clinical practice.

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Titel: Utilizing metagenomic next-generation sequencing for pathogen detection and diagnosis in lower respiratory tract infections in real-world clinical practice
verfasst von: Tangfeng Lv
Qi Zhao
Jia Liu
Song Wang
Weiwei Wu
Liyun Miao
Ping Zhan
Xiaoli Chen
Manman Huang
Mingxiang Ye
Qiuxiang Ou
Yeqing Zhang
Publikationsdatum: 18.02.2024
Verlag: Springer Berlin Heidelberg
Erschienen in: Infection / Ausgabe 2/2024
Print ISSN: 0300-8126
Elektronische ISSN: 1439-0973
DOI: https://doi.org/10.1007/s15010-024-02185-1

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Utilizing metagenomic next-generation sequencing for pathogen detection and diagnosis in lower respiratory tract infections in real-world clinical practice