HIV-1 RNA monitoring with a dual-target diagnostic assay: a case report.

Heliyon(2024)

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摘要
In a restricted subset of people living with HIV-1 (PLWH) on antiretroviral therapy (ART) with persistent suppressed viral load (i.e., pol-based HIV-RNA repeatedly undetected), a dual-target (pol and LTR) diagnostic assay for HIV-RNA monitoring can measure quantifiable levels of viral loads (VL) above 30 copies/mL exclusively through the amplification of the LTR region, while the pol target results undetected.We report a patient who shows high levels of HIV-RNA detected exclusively through amplification of the LTR region while undetected by the pol region, during a long monitoring period, from 2018 to date. In this follow-up, the ART was modified without reaching LTR-based undetected HIV-RNA values. Immunological and virological parameters remained optimal with a progressive and steady gain of the CD4/CD8 ratio.The clinical history of this patient, shows that LTR-based viremia above 50 copies/mL can be found occasionally or persistently in the plasma of PLWH under suppressive ART, even at high levels. Based on previous studies, VL detected and quantified exclusively through the amplification of the LTR region corresponds to partial or incomplete HIV-RNA transcripts, which cannot trigger new infections. Interestingly, changes in ART do not eliminate repeated findings of these unusual viral elements.
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关键词
HIV-1 RNA monitoring,dual-target assay,antiretroviral therapy,case report,LTR
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