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bioRxiv · 10.64898/2026.08.12.744373

Analytical concordance of targeted next-generation sequencing and whole-genome sequencing for Mycobacterium tuberculosis drug resistance and lineage determination in West Java, Indonesia

Pradani, G. A. P.·Alifia, A.·Syahbaniati, A. P.·Larasmanah, A. N.·Busaeri, M.·Djunaedy, H.·Choerunisa, T. F.·Massi, M. N.·Rachman, R. W.·Fibriani, A.·van Crevel, R.·van Ingen, J.·Lestari, B. W.
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Abstract

As drug-resistant tuberculosis (DR-TB) cases rise, resistance detection in a timely manner is essential to lead effective treatment and limit transmission. Targeted next-generation sequencing (tNGS) offers quick results with multiple important drugs covered, but assessments regarding its performance for DR-TB diagnostic use compared to whole genome sequencing (WGS) as the most comprehensive genomic-based tool are still limited. This cross-sectional study compared resistance profiles generated by Deeplex Myc-TB tNGS assay with WGS for 116 prospectively-collected rifampicin resistant TB samples from West Java, Indonesia. All 116 samples were subject to paired analysis, the clinical samples were split to be directly processed for tNGS and to be cultivated for culture-based WGS. Both WGS and tNGS were carried out using Illumina MiSeq platform. High concordance of tNGS and WGS were observed across thirteen anti-TB drugs evaluated, particularly for drugs included in the BPaLM regimen. Isoniazid had the lowest concordance of 86.73%. Of 116 samples, 31.03% (n = 36) had discrepant resistance calling from the two methods for one or more drugs, which came from 73 discordant variants identification. The most common source of discrepancy was when tNGS detected a resistance-conferring mutation while WGS did not (54.8%). tNGS could detect mixed infection better than WGS, but WGS was superior in identifying detailed major Mycobacterium tuberculosis lineage of the sample. tNGS showed a good level concordance with WGS in detecting resistance-conferring mutations in rifampicin-resistant TB samples, with a more rapid turnaround time. Continuous update to tNGS panel and mutation catalogue is needed to keep the tool clinically relevant. ImportanceDrug-resistant tuberculosis (DR-TB) continues to pose worldwide threat, and newer diagnostic tools to generate quick, comprehensive resistance profile are crucial to provide timely appropriate treatment. Targeted next-generation sequencing (tNGS) is a promising new alternative, but more evidence on its performance is needed to support programmatic adoption. By analysing DR-TB samples with both tNGS and whole genome sequencing (WGS) and evaluating their results agreement, this study shows that tNGS works just as well as WGS in detecting TB drug resistance-conferring mutations, confirming its potential for routine diagnostic use. This study also observed that while WGS is superior in identifying Mycobacterium tuberculosis lineage with high resolution, it did not detect mixed infection better than tNGS. Notably, this study demonstrated that tNGS is clinically relevant for DR-TB detection in a high burden setting, providing evidence for programmatic consideration in Indonesia and other settings with similar demographics and TB situation.

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Pradani, G. A. P., Alifia, A., Syahbaniati, A. P., Larasmanah, A. N., Busaeri, M., Djunaedy, H., Choerunisa, T. F., Massi, M. N., Rachman, R. W., Fibriani, A., van Crevel, R., van Ingen, J., Lestari, B. W.. 2026-08-12. Analytical concordance of targeted next-generation sequencing and whole-genome sequencing for Mycobacterium tuberculosis drug resistance and lineage determination in West Java, Indonesia. https://doi.org/10.64898/2026.08.12.744373

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