Rising rates of recent preexposure prophylaxis exposure among men having sex with men newly diagnosed with HIV: antiviral resistance patterns and treatment outcomes.
Abstract: M184V mutation was harboured more commonly in the recent PrEP use group (30% vs.
Abstract: DISCUSSION: Rapid PrEP intensification to ART allowed to achieve high rates of HIV viral suppression despite significant rates of M184V mutation harboured in those newly diagnosed with HIV and reporting recent PrEP exposure.
Result: Among those harbouring a Discussion: At least two-thirds of those carrying a M184V/I mutation in our cohort acquired HIV recently, with a large majority reporting sub-optimal PrEP adherence, irrespectively of the PrEP scheme adopted, confirming the trend observed previously in our cohort and in other reports.
Discussion: We confirm high rates of acquired viral resistance to emtricitabine, mostly in the form of M184V/I mutation, harboured in almost a third of these cases.
Brief Report: Bictegravir/Emtricitabine/Tenofovir Alafenamide Efficacy in Participants With Preexisting Primary Integrase Inhibitor Resistance Through 48 Weeks of Phase 3 Clinical Trials.
PMID: 34897227
2022
Journal of acquired immune deficiency syndromes (1999)
Result: Notably, 4 had INSTI-R combined with NRTI-R substitutions relevant to the emtricitabine (FTC) or TAF components of the B/F/TAF regimen (M184V and/or K70E).
Table: M184V/I
Table: M184V
Discussion: In the 3 real-world cases, other INSTI-R substitutions were also noted, including L74I, E138K, S147G, and H51Y, along with M184V in RT.
Discussion: The accumulation of multiple INSTI-R mutations, along with M184V, which confe
Characterization of HIV-1 drug resistance among patients with failure of second-line combined antiretroviral therapy in central Ethiopia.
Abstract: K103N (59%) and M184V (52%) were the most common mutations, followed by V106M and K65R (31% each).
Real-life experience with bictegravir/emtricitabine/tenofovir alafenamide in a large reference clinical centre.
PMID: 35040990
2022
The Journal of antimicrobial chemotherapy
Abstract: In PLWH carrying an M184V/I substitution, OT RNA <50 copies/mL was 89.5% at M6.
Prevalence of transmitted drug resistance among ART-naive HIV-infected individuals, Beijing, 2015-2018.
PMID: 35092830
2022
Journal of global antimicrobial resistance
Abstract: The thymidine analogue mutations (TAMs) M41L/LM (4, 0.12%) and non-TAMs mutations M184V/MV/MI (8; 0.24%) were the primary NRTI-associated resistance mutations.
Molecular characterisation of the pol gene of vertically transmitted HIV-1 strains in children with virological failure.
PMID: 35302390
2022
AIDS research and human retroviruses
Abstract: M184V/I, K103N/S and Y181C were the most commonly occurring mutations, seen in 76%, 51% and 36% children.
Abstract: At BL, K103N (5), E138A/G (4) and M184V (3) were the most common mutations.
HIV-1-infection in a man who has sex with men despite self-reported excellent adherence to pre-exposure prophylaxis, the Netherlands, August 2021: be alert to emtricitabine/tenofovir-resistant strain transmission.
Discussion: A combination of RAM similar to those found in this case (M184V, K65R, V108I and E138A) has not been reported in PrEP users.
Discussion: Although theoretically possible, it is unlikely that the short-term and limited drug exposure was sufficient to select for both M184V and K65R, with only few M184V mutations, and even more rarely K65R, described in the literature.
Discussion: However, six cases of HIV infection despite PrEP use have been described previously; in two cases both M184V and K65R were identified.
Discussion: Possible explanations for the PrEP failure in our
Prevalence and patterns of HIV drug resistance in patients with suspected virological failure in North-Western Tanzania.
PMID: 35107140
2022
The Journal of antimicrobial chemotherapy
Abstract: Common mutations in RT were M184V (75%), T215Y (41.1%), K103N (39.3%), M41L (32.1%), D67DN (30.3%), G190A (28.6%) and A98G (26.8%).
Table: M184V
Discussion: Some of the most common mutations in this study were M184V, K103N, Y181C and G190A, which occurred at similar frequencies to those reported in studies from other SSA and Tanzanian settings.
Discussion: The presence of M184V was in line with a study done in Tanzania that showed a high prevalence of this mutation among
Kinetics of Archived M184V Mutation in Treatment-Experienced Virally Suppressed HIV-Infected Patients.
Abstract: Among adult participants, factors associated with preexisting M184 V/I included other resistance, Black race, Hispanic/Latinx ethnicity, lower baseline CD4 cell count, advanced HIV disease, longer duration of antiretroviral therapy, and greater number of prior third agents.
Abstract: At last on-treatment visit, 98% (179/182) with preexisting M184 V/I and 99% (2012/2034) of all B/F/TAF-treated participants had HIV-1 RNA <50 copies/mL, with no treatment-emergent resistance to B/F/TAF.
Abstract: CONCLUSIONS: M184 V/I was detected in 10% of virologically suppressed clinical trial participants at study baseline.
Abstract: Most substitutions were M184 V (n = 161) or M184 V/I mixtures (n = 10).
HIV mutation literature information.
PMID: 
2022
AIDS (London, England)
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