Related Experiment Video
Updated: Jan 22, 2026
10:17
An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
Published on: November 3, 2010
23.3K
Genetic Contribution in Low Back Pain: A Prospective Genetic Association Study
César Margarit1,2, Reyes Roca2, María-Del-Mar Inda2
1Pain Unit, Department of Health of Alicante, Alicante General Hospital, Alicante, Spain.
Summary
Genetic variations influence how patients with chronic low back pain respond to opioids. Understanding these pharmacogenetic factors can help personalize pain management strategies for better outcomes.
Area of Science:
- Pharmacogenetics
- Pain Management
- Genomics
Background:
- Chronic pain is a significant health issue with variable patient responses to analgesics.
- Interindividual differences in drug response are partly due to genetic variations affecting drug metabolism and action.
Purpose of the Study:
- To investigate the effectiveness of opioid therapy in chronic low back pain (CLBP) patients.
- To determine the impact of pharmacogenetics on opioid response in CLBP.
Main Methods:
- 231 opioid-naïve CLBP patients were studied over 2-4 years.
- Genetic analysis of OPRM1, COMT, UGT2B7, ABCB1, KCNJ6, and CYP3A5*3A gene variants was performed.
- Pain intensity, quality of life, disability, and adverse events were assessed post-opioid titration.
Main Results:
- Specific genotypes (COMT G472A-AA, KCNJ6 A1032G-A) correlated with higher opioid dosing needs.
- OPRM1 and UGT2B7 genotypes influenced the neuropathic pain component.
- Opioid titration led to significant reductions in CLBP intensity, neuropathic symptoms, disability, anxiety, and depression, with improved quality of life.
Conclusions:
- Single-nucleotide polymorphisms in pain-related and opioid-metabolizing genes may affect opioid efficacy in CLBP.
- Clinical trials are recommended to apply these pharmacogenetic findings in chronic pain management.
Related Concept Videos
02:16Genetics of Speciation
20.9K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
20.9K
01:25What is Population Genetics?
64.5K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
64.5K
02:59Animal Mitochondrial Genetics
9.0K
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
9.0K
00:49What is Genetic Engineering?
79.8K
Overview
79.8K
01:09Mutation, Gene Flow, and Genetic Drift
63.1K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
63.1K
02:18Types of Genetic Transfer Between Organisms
30.6K
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
30.6K