Related Experiment Video
Updated: Feb 21, 2026

11:19
Pairwise Growth Competition Assay for Determining the Replication Fitness of Human Immunodeficiency Viruses
Published on: May 4, 2015
11.8K
Human Immunodeficiency Virus Type 1 Drug Resistance Mutations Update
1Division of Infectious Diseases, Department of Medicine, Stanford University School of Medicine.
The Journal of Infectious Diseases
|October 3, 2017
Summary
Drug resistance mutations (DRMs) are emerging with widely used antiretroviral drugs (ARVs). Understanding these DRMs is crucial for effective HIV treatment strategies and patient response to therapy.
Area of Science:
- Virology
- Infectious Diseases
- Pharmacology
Background:
- Treatment options for HIV are consolidating around fewer antiretroviral drugs (ARVs).
- Emerging data highlight drug resistance mutations (DRMs) selected by commonly used ARVs.
- These DRMs impact ARV susceptibility and treatment outcomes.
Purpose of the Study:
- To review and synthesize current data on drug resistance mutations (DRMs) associated with widely used antiretroviral drugs (ARVs).
- To assess the impact of these DRMs on ARV susceptibility and virological response in HIV treatment regimens.
Main Methods:
- Review of recent studies documenting DRMs in patients receiving specific ARVs.
- Analysis of data on the selection of DRMs by tenofovir prodrugs, efavirenz, rilpivirine, ritonavir-boosted lopinavir, raltegravir, elvitegravir, and dolutegravir.
Main Results:
- Specific DRMs have been identified for tenofovir prodrugs, NNRTIs (efavirenz, rilpivirine), boosted protease inhibitors (lopinavir/ritonavir), and integrase inhibitors (raltegravir, elvitegravir).
- Emerging evidence also describes DRMs associated with dolutegravir, though from smaller studies.
Conclusions:
- The emergence of DRMs is a significant concern with current ARV regimens.
- Continued monitoring and research into DRMs are essential for optimizing HIV treatment strategies and managing drug resistance.
Related Concept Videos
Viral Mutations
40.0K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
40.0K
Retrovirus Life Cycles
49.9K
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
49.9K
Immunodeficiency Diseases
2.6K
Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...
There are three main causes of immunodeficiency...
2.6K
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
24
Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
24
Treatment Resistant Cancers
3.8K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.8K

