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HBV DNA quantitative — viral-load monitoring during nucleos(t)ide analogue therapy

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IDBIO-HBV-DNA-QUANTITATIVE-MONITORING
TipoBiomarcador
Alegais
Monitorização quantitativa do ADN do VHBAvaliação da presença de um sistema de controlo de ensaio de ensaios de ensaioPCR quantitativo do VHBMonitorização da carga viral do VHBHBV ДНК кількісна — моніторинг вірусного навантаження під час нуклеоз(т)идної терапії
Estadoreviewed 2026-05-18 | pending_clinical_signoff
DoençasDIS-HCC
FontesSRC-AASLD-HBV-2024 SRC-AASLD-HCC-2023 SRC-EASL-HBV-2025

Fatos de biomarcadores

Tipo de biomarcadorviral_load
Medição
MétodoReal-time quantitative PCR (HBV DNA, IU/mL); high-sensitivity assay (LOD ≤10-20 IU/mL) required
UnidadesIU/mL
Gama típica
  • 0
  • 100000000
Biomarcadores relacionadosBIO-HBV-STATUS

Notas

Quantitative HBV DNA used to TRACK viral suppression over time during chronic-HBV antiviral therapy (entecavir or tenofovir TDF/TAF — first- line nucleos(t)ide analogues per AASLD 2024 / EASL 2025). Distinct from BIO-HBV-STATUS (serology-based screening / treatment-decision gate). Two clinical contexts: (1) Treatment monitoring in HBeAg+/HBeAg− chronic HBV: baseline HBV DNA + ALT + HBeAg + HBsAg → start NA → recheck q3 months for first year, then q6 months. Goal: HBV DNA undetectable on treatment; ALT normalization; HBeAg seroconversion (HBeAg+ patients) or HBsAg loss (functional cure — rare on NA monotherapy, ~1% per year). Virologic breakthrough (≥1-log rise from nadir) prompts adherence review then switch (entecavir → tenofovir if NA-naïve resistance). (2) Prophylaxis monitoring during B-cell-depleting therapy (rituximab, obinutuzumab) or anti-CD38 (daratumumab, isatuximab) in HBsAg+ or anti-HBc+ patients: entecavir prophylaxis baseline → HBV DNA q3 months during chemotherapy and for 12+ months post-treatment; any detectable HBV DNA = reactivation, hepatology consult. HCC surveillance in chronic HBV (cirrhotic OR Asian male >40 OR Asian female >50 OR African >20 OR family histo...

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