Using droplet digital polymerase chain reaction for cell-free DNA to diagnose tuberculous pleural effusion
A blood-based test detecting tuberculosis DNA in pleural fluid achieves 83% sensitivity, substantially outperforming standard tests for this diagnosis.
In a prospective two-hospital Taiwan cohort (N=91), ddPCR targeting Mycobacterium tuberculosis-derived cell-free DNA in pleural effusion achieved 83% sensitivity and 84% specificity for tuberculous pleural effusion, substantially outperforming Xpert Ultra (31.8% sensitivity). This demonstrates a novel liquid biopsy-adjacent application of cfDNA technology to infectious disease diagnosis.
What the study was
- Study design
- Prospective diagnostic accuracy study (two hospitals, Taiwan)
- Population
- Adults with pleural effusion; N=91 (29 TPE, 62 non-TPE), Taiwan
- Sample size
- 91
- Category
- Diagnostics
- Maturity
- Validated
- Journal
- International Journal of Infectious Diseases
Why it surfaced
cfDNA/ddPCR technology applied to infectious disease diagnosis outperforms current gold standard; relevant to liquid biopsy technology generalizability and could inform oncology cfDNA assay development.
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