Nationwide Study of Drug Resistance Mutations in HIV-1 Infected Individuals under Antiretroviral Therapy in Brazil.
PMID: 34069929
2021
International journal of molecular sciences
Result: The most common SDRM (Figure 1, Supplementary Table S2) were the substitutions in RT amino acids M184V (65.53%, n = 13,265), K103N (40.20%, n = 8738), and M41L (17.21%, n = 3480).
Result: The most common mutation across the years was M184V (Figure 1), notwithstanding a decreasing trend and a significant decrease between 2015 (68.29%, n = 1874) and 2016 (53.21%, n = 2684) (p < 0.001) (Table 2).
Discussion: Along with the most common mutations, M184V rates presented a decrease over the yrs (76.88% in 2008 to 51.48% in 2017).
Discussion: Also in line with previous studies is the finding of M184V (65.53%), K103N (40.20%), and M41L (17.21%) as the most common
Surveillance of Pretreatment Drug Resistance Among HIV-Infected Children in Ibadan, Nigeria.
PMID: 34074135
2021
AIDS research and human retroviruses
Abstract: Three out of the four mutations were identified as non-nucleoside reverse transcriptase inhibitors DRM (K103N), whereas the fourth had nucleoside reverse transcriptase inhibitors DRM (M184V).
Biochemical and Structural Properties of Entecavir-Resistant Hepatitis B Virus Polymerase with L180M/M204V Mutations.
Abstract: Crystallography of HIV RTY115F/F116Y/Q151M/F160M/M184V, mimicking HBV RT L180M/M204V, showed that the F115 bulge (F88 in HBV RT) caused by the F160M mutation induced deviated binding of dCTP from its normal tight binding position.
Reverse transcriptase and protease inhibitors mutational viral load in HIV infected pregnant women with transmitted drug resistance in Argentina.
PMID: 34085506
2021
Revista espanola de quimioterapia
Discussion: M184I/V was infrequent in naive pregnant women.
Discussion: Therefore, updated local studies evaluating prevalence of M184I/V mutations in general population are needed.
Transmitted drug resistance to Tenofovir/Emtricitabine among persons with newly diagnosed HIV infection in Shenyang city, Northeast China from 2016 to 2018.
Abstract: The TDF/FTC DRMs included K65R (8/13), M184I/V (5/13), and Y115F (2/13).
Introduction: The main drug resistance mutations (DRMs) to TDF/FTC include K65R and M184I/V, but the global
Result: K65R is known to confer high-level resistance to TDF and intermediate-level resistance to FTC, while M184I/V confers high-level resistance to FTC and 3TC and low-level resistance to abacavir (ABC).
Result: The mutations included K65R (61.5%, 8/13), M184I/V (38.5%, 5/13), and Y115F (2/13).
Table: M184M/V
Table: M184V
Evaluation of minor drug-resistant viral variants in patients experiencing virological failure (VF) on a first-line regimen in Fujian Province by high-throughput sequencing.
Abstract: RESULTS: NRTI drug resistant mutations (DRMs) were detected in a high proportion of subjects, with the most common being M184V and TAMs.
Nucleoside Reverse-Transcriptase Inhibitor Resistance Mutations Predict Virological Failure in Human Immunodeficiency Virus-Positive Patients During Lamivudine Plus Dolutegravir Maintenance Therapy in Clinical Practice.
PMID: 34327247
2021
Open forum infectious diseases
Abstract: In this dataset from clinical practice investigating the impact of past nucleoside reverse-transcriptase inhibitor resistance on this strategy, the combination of M184V/I plus at least
Discussion: However, previous observational studies suggested an increased risk of VF during 3TC-based DT when M184V/I was present in combination with a shorter time of viral suppression.
Discussion: Indeed, M184V/I and TAMs appear to synergize with each other since TAMs alone were not associated with VF.
Discussion: Our study showed that a shorter duration of virological suppression and the presence of M184V/I were independent predictors of VF; however, M184V/I alone was less accurate in predicting the outcome than its combination with TAMs.
High HIV-1 Virological Failure and Drug Resistance among Adult Patients Receiving First-Line ART for At least 12 Months at a Decentralized Urban HIV Clinic Setting in Senegal before the Test-and-Treat.
Abstract: Of the 27 viraemic isolates successfully genotyped, 20 (74.1%) carried DR mutations; most frequent were M184VI (55.6%), K103N (37.1%), thymidine analog mutations (29.6%), Y181CY (22.2%).
Result: FTC and 3TC were also predicted with high-level DR (55.6%), which however is associated with a higher fitness cost due to the point mutation M184V.
Result: For NRTIs, these were M184VI (55.6%), T215SNY (22.2%), and K65R (18.5%).
Table: M184V
Discussion: In subgroup analysis of DR, most widespread DRMs among failing patients were 3TC-resistance M184V and NVP-resistance
High Detection Rate of HIV Drug Resistance Mutations among Patients Who Fail Combined Antiretroviral Therapy in Manaus, Brazil.
Abstract: The DRMs most frequent were M184I/V (82.9%) for nucleoside reverse transcriptase inhibitors (NRTI), K103N/S (63.4%) for nonnucleoside reverse transcriptase inhibitor (NNRTI), and V82A/L/M (7.3%) for protease inhibitors (PI).
Discussion: An elevated frequency of M184V (75%) was also detected herein, as well as in the study conducted in Belem; this has ranged from 54.4% in Sao Paulo to 81.2% in Bahia.
Discussion: Despite the low impact of the M184V alone to NRTI resistance, when taken together to other
Prevalence of transmitted HIV-1 drug resistance among treatment-naive individuals in China, 2000-2016.