Retrospective study on the outcome of two-drug regimens based on dolutegravir plus one reverse transcriptase inhibitor in virologically-suppressed HIV-infected patients.
PMID: 31926287
2020
International journal of antimicrobial agents
Abstract: One VF to DTG+RPV occurred because of historical resistance to RPV, accompanied by newly selected G140A and Q148R mutations.
Expanded Spectrum of Antiretroviral-Selected Mutations in Human Immunodeficiency Virus Type 2.
PMID: 31965175
2020
The Journal of infectious diseases
Abstract: In IN, 11 nonpolymorphic TSMs occurred in >=4 persons: Q91R, E92AQ, T97A, G140S, Y143G, Q148R, A153G, N155H, H156R, R231 5-amino acid insertions.
HIV-1 acquired drug resistance to integrase inhibitors in a cohort of antiretroviral therapy multi-experienced Mexican patients failing to raltegravir: a cross-sectional study.
Discussion: On the other hand, we do not find a significant difference between the mean viral load of the subjects with DTG resistance compared to the subjects without DTG resistance (n = 22), nor with samples harbouring a G140S/A + Q148H/R/K combination (n = 3) as described in that study.
High prevalence of integrase mutation L74I in West African HIV-1 subtypes prior to integrase inhibitor treatment.
PMID: 32105319
2020
The Journal of antimicrobial chemotherapy
Introduction: At VF the major integrase mutation Q148R occurred in two and G140R in one.
Impact of genotypic diversity on selection of subtype-specific drug resistance profiles during raltegravir-based therapy in individuals infected with B and BF recombinant HIV-1 strains.
PMID: 32125378
2020
The Journal of antimicrobial chemotherapy
Abstract: INI DRMs differed between B and F IN subtypes, with Q148K/R/H, G140S and E138K/A being more prevalent in subtype B (63% versus 0%, P = 0.0021; 50% versus 0%, P = 0.0096; and 50% versus 0%, P = 0.0096, respectively).
Characterization of viral rebounds on dual etravirine/raltegravir maintenance therapy (ANRS-163 ETRAL trial).
PMID: 32259255
2020
The Journal of antimicrobial chemotherapy
Abstract: Some RT variants became dominant at VF (K101E, 86.3%; Y181C, 100.0%; G190A, 100.0%) and others emerged in integrase (Y143C, 2.4%; Q148R, 6.2%; N155H, 18.8%).
Evidence for Disruption of Mg(2+) Pair as a Resistance Mechanism Against HIV-1 Integrase Strand Transfer Inhibitors.
PMID: 32974383
2020
Frontiers in molecular biosciences
Introduction: There are three commonly frequent resistance pathways among the resistance mutations: N155H, Q148HRK, and Y143HC; interestingly, N155H and Q148HRK are mutually exclusive.
Accumulation of integrase strand transfer inhibitor resistance mutations confers high-level resistance to dolutegravir in non-B subtype HIV-1 strains from patients failing raltegravir in Uganda.
PMID: 32853364
2020
The Journal of antimicrobial chemotherapy
Abstract: Two patients, one with E138A/G140A/Q148R/G163R and one with E138K/G140A/S147G/Q148K, displayed the highest reported resistance to raltegravir, elvitegravir and even dolutegravir.
Molecular dynamic simulations to investigate the structural impact of known drug resistance mutations on HIV-1C Integrase-Dolutegravir binding.
Introduction: Genetic resistance pathways including primary mutations at codons Y143C/H/R, Q148H/K/R or N155H together with one or more additional associated secondary mutations at L74M, E92Q, T97A, E138E/A/K or G140S/A, has been reported to result in higher levels of resistance with RAL treatment.
Table: Q148R
Discussion: showed the structural impact of mutations Q148H/R and G140S/A on the flexibility of the HIV-1 IN as a mechanism for RAL resistance.
Emergence of Resistance to Integrase Strand Transfer Inhibitors during Dolutegravir Containing Triple-Therapy in a Treatment-Experienced Patient with Pre-Existing M184V/I Mutation.
Result: This resistance test newly revealed the E138K, Q148R, and R263K INSTI mutations at frequencies of 100% by means of next-generation sequencing (NGS), causing high-level resistance to RAL, EVG, DTG, and BIC.
HIV mutation literature information.
PMID: 
2020
International journal of antimicrobial agents
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