Result: We also investigated the levels of preexisting T215 reversion mutations (
T215A/C/D/E/G/H/I/L/N/S/V) and found that four of five patients had preexisting levels of
T215A and/or
T215I that ranged from 0.05% to 0.11% (Table 3), whereas we did not detect any of the other 215 reversion mutations.