Summary of integrase strand transfer inhibitor drug resistance mutations.
Bold/underline: High-level reduced susceptibility or virological response. Bold: reduced suceptibility or virological response. Plain text: reduced susceptibility in combination with other INSTI-resistance mutations. Asterisk: increased susceptibility. Abbreviations: raltegravir (RAL), elvitegravir (EVG), dolutegravir (DTG). Additional mutations: H51Y, L74M, T97A, S153YF, G163RK, S230R, and R263K are relatively nonpolymorphic INSTI-selected accessoryresistance mutations. E92GV, E138T, Y143KSGA, Q148N, and N155ST are unusual variants at the positions listed above. P145S and Q146P are rare EVG-resistance mutations. G118R and F121Y are rare nonpolymorphic INSTI resistance mutations. References: http://hivdb.stanford.edu/DR/INIResiNote.html.