Table 1

Enzymatic in vitro drug resistance data for telaprevir (VX-950)


IC50 mean (nM)
IC50 range (nM)
IC50 (fold changes)

HCV genotype 1a
70
-
-
V36A/G/L/M
226
110-444
1.7-6.9
T54S
120
-
1.9
T54A
749
-
11.7
R155G/I/K/L/M/S/T
538
275-1,050
4.3-16.4
A156I/T/V
29,800
12,500-50,000
195-781
A156S
1,400
-
21.9

Enzymatic in vitro resistance data for VX-950 (mean IC50 values, IC50 range and IC50 fold changes) are compared to the reference strain HCV-H, genotype 1a (UniProtKB accession number P27958) and are shown for VX-950 inhibition of wild-type and mutant NS3-4A proteases (V36, T54, R155 and A156) [19,26,28].

Welsch et al. Genome Biology 2008 9:R16   doi:10.1186/gb-2008-9-1-r16