Runaway Kaposi Sarcoma-associated herpesvirus replication correlates with systemic IL-10 levels
2019
Abstract KSHV-associated inflammatory cytokine syndrome (KICS) is caused by
Kaposi's sarcoma-associated herpesvirus(KSHV). KICS is associated with high-level, systemic replication of KSHV. This study characterized the clinical and virologic features of a KICS patient over time. Additionally, it compared the cytokine profiles of the KICS case to
Kaposi's sarcoma(KS) (n = 11) and non-KS (n = 6) cases. This KICS case presented with elevated levels of KSHV and IL-10, as expected. Surprisingly, this case did not have elevated levels of IL-6 or
human immunodeficiency virus 1(HIV-1). Nevertheless, treatment with anti-IL6 receptor antibody (
tocilizumab) reduced KSHV viral load and IL-10. The KSHV genome sequence showed no significant changes over time, except in ORF24. Phylogenetic analysis established this isolate as belonging to KSHV clade A and closely related to other US isolates. These findings suggest IL-10 as potential biomarker and therapy target for KICS.
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