Abstract: The best correlation with response was found with the derived score (
M41L x 2) +
E44D/A/G +
T69D/S/N/A + (
L210W x 2) +
T215Y or revertants +
L228H/R -
D123E/N/G/S, by use of which viruses were categorized as being susceptible (score < or =0), as having intermediate resistance (1-3), and as being resistant (> or =4) to didanosine.