A more dramatic reduction was observed in cccDNA levels in anti-HBV AAV- Sa Cas9-treated animals compared with control animals, both before and after entecavir withdrawal ( Figure 5 B), but again this did not reach statistical significance.
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CRISPR-Cas9 gene editing of hepatitis B virus in chronically infected humanized mice.
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The sentences
HBV-specific AAV- Sa Cas9 therapy significantly improved survival of human hepatocytes, showed a trend toward decreasing total liver HBV DNA and cccDNA, and was well tolerated.
Treated animals demonstrated a highly significant improvement in human hepatocyte survival compared with control animals.