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中国防痨杂志 ›› 2026, Vol. 48 ›› Issue (7): 985-991.doi: 10.19982/j.issn.1000-6621.20260027

• 论著 • 上一篇    下一篇

Genewise-MTBC系统快速检测结核分枝杆菌复合群的性能评估

王聪丽, 王昊然, 黄海荣, 姜广路()   

  1. 北京市结核病胸部肿瘤研究所/首都医科大学附属北京胸科医院国家结核病临床实验室/耐药结核病研究北京市重点实验室, 北京 101149
  • 收稿日期:2026-01-16 出版日期:2026-07-10 发布日期:2026-07-02
  • 通信作者: 姜广路,Email:guanglu0725@126.com
  • 基金资助:
    北京市卫生健康委员会高层次公共卫生人才(G2023-2-002);北京市科技新星计划(20230484411)

Performance evaluation of the Genewise-MTBC System in the rapid detection of the Mycobacterium tuberculosis complex

Wang Congli, Wang Haoran, Huang Hairong, Jiang Guanglu()   

  1. National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory on Drug-resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis and Thoracic Tumor Institute, Beijing 101149, China
  • Received:2026-01-16 Online:2026-07-10 Published:2026-07-02
  • Contact: Jiang Guanglu,Email:guanglu0725@126.com
  • Supported by:
    Beijing Municipal Health Commission High-Level Public Health Talent(G2023-2-002);Beijing Science and Technology New Star Program(20230484411)

摘要:

目的: 初步评价Genewise-MTBC系统对结核分枝杆菌复合群的检测性能。方法: 使用连续稀释的结核分枝杆菌和牛分枝杆菌的模式菌株来确定Genewise-MTBC的检测限。以17株非结核分枝杆菌和其他14种病原微生物的模式菌株或分离株与痰液混合,测试该系统特异度。同时,将潜在的干扰物质在其最高生理浓度下与痰液混合,以测试系统的抗干扰能力。此外,对71份临床标本进行了Genewise-MTBC检测,与GeneXpert MTB/RIF检测平行进行,以临床诊断为标准,评估其临床可行性。结果: Genewise-MTBC检测系统针对结核分枝杆菌复合群的最低检出限为18CFU/ml。同时,该检测系统与17种非结核分枝杆菌和14种其他病原微生物均无交叉反应。对71份临床标本检测,以临床诊断为金标准,Genewise-MTBC系统和GeneXpert MTB/RIF检测的敏感度分别为61.11%(33/54)和57.41%(31/54),特异度分别为94.12%(16/17)和100.00%(17/17),阳性预测值分别为97.06%(33/34)和100.00%(31/31),阴性预测值分别为43.24%(16/37)和43.50%(17/40)。结论: Genewise-MTBC系统具有较高的敏感度、特异度、稳定性和抗干扰性,值得在未来进行大规模临床评价。

关键词: 分枝杆菌, 结核, 诊断, 鉴别, 分子诊断技术

Abstract:

Objective: To preliminarily evaluate the performance of the Genewise-MTBC system for the Mycobacterium tuberculosis complex detection. Methods: Serially diluted type strains of M.tuberculosis and M.bovis were used to identify the limit of detection (LOD) of Genewise-MTBC. A total of 17 strains of nontuberculous mycobacteria (NTM) and 14 other pathogenic microorganisms were included to test its specificity. Meanwhile, potential interfering substances at their highest physiological concentrations were mixed with sputum to test the anti-interference ability of the system. Moreover, based on clinical diagnosis, Genewise-MTBC tests were performed on 71 clinical specimens in parallel with GeneXpert MTB/RIF assay to evaluate the clinical feasibility. Results: The LOD of Genewise-MTBC was defined as 18 CFU/ml for MTBC detection. Meanwhile, the test had no cross-reactivity with 17 NTM and 14 other respiratory pathogens. With clinical diagnosis as the gold standard, for the 71 clinical specimens, the sensitivities of Genewise-MTBC and GeneXpert MTB/RIF were 61.11% (33/54) and 57.41% (31/54), respectively; the specificities were 94.12% (16/17) and 100.00% (17/17), respectively; the positive predictive values were 97.06% (33/34) and 100.00% (31/31), respectively; and the negative predictive values were 43.24% (16/37) and 43.50% (17/40), respectively. Conclusion: The Genewise-MTBC system possesses high sensitivity, specificity, stability and anti-interference capability, which is worthy of a large-scale clinical evaluation in the future.

Key words: Mycobacterium tuberculosis, Diagnosis, differential, Molecular diagnostic techniques

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