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. 2023 Feb 10;78(4):946–952. doi: 10.1093/jac/dkad027

Table 1.

In vitro efficacy of ensitrelvir in cell lines compared with that of nirmatrelvir, remdesivir and NHC

Cells SARS-CoV-2 Assay Ensitrelvir Nirmatrelvir Remdesivir NHC
VeroE6/TMPRSS2 WK-521 qRT–PCR
EC90 (nmol/L)
91.1 ± 26.4 1320 ± 150 906 ± 243 606 ± 128
VeroE6/TMPRSS2 + P-gp inhibitor WK-521 qRT-PCR
EC90 (nmol/L)
33.3 ± 2.7 21.5 ± 4.0 17.5 ± 3.2 1450 ± 130
HEK293T/ACE2-TMPRSS2 WK-521 CPE
EC50 (nmol/L)
27 ± 2 41 ± 13 12 ± 2 4000 ± 3500

Results are presented as mean ± SD calculated from three independent experiments.

+P-gp inhibitor, 0.75 µmol/L CP-100356.