Result: The most common accessory
PI resistance mutations found were
M36I (56/61 patients) and
R41K (56/61 patients), followed by mutations
L89M (51/61),
I15V (50/61), and
L63T (41/61).
Discussion: A high frequency of minor
PI resistance mutations (
M36I,
L63P, and
K20R/I) has been reported in newly diagnosed immigrants from Spain, infected with non-B subtypes.
Discussion: The most common accessory
PI resistance mutation observed in this study was
M36I, and this has been reported to increase viral fitness and confer resistance to ritonavir and nelfinavir.