"Gene variants" refers to different versions of a gene that can be found in individuals. These variants can result in slight differences in traits or characteristics between people, such as eye color, height, or risk of certain diseases.
Full definition
This is the prospect raised by the discovery
of gene variants that seem to predict whether an individual will produce enough antibodies in response to a vaccine to protect them against disease.
In this study we found that individuals
with gene variants that lead to increased body - mass index (BMI) also had an increased risk of heart failure and diabetes.
They applied the same analytic techniques to tease out connections between all 1,600 known transcription factors and the known
gene variants associated with more than 200 diseases.
The test scanned for about one million of the roughly 10 million
gene variants in the human genome.
In most cases, the researchers know only of the association with the
identified gene variants, and not what the genes might specifically do.
What the other four
gene variants do is less clear, but they could be an evolutionary response to selective pressures besides high altitude.
Now, researchers have discovered a handful of
new gene variants responsible for this palette of tones.
Patients who test positive may carry
certain gene variants that increase the risk of passing along a genetic condition to future offspring — key insight for both patients and clinicians.
When exposed to estrogen, an area in the brain's memory hub that is typically suppressed during such tasks instead activated in those with the uniquely
human gene variant.
Comparing the two sets of genes, the team discovered several immune -
related gene variants that were rare among the living.
Without knowing
which gene variants were contributing useful properties, people simply selected the best plants for continued cultivation, in this case choosing plants that had large backpacks.
The researchers said their finding could lead to new treatments that might help ease symptoms of menopause, but more research is needed to understand how other
rare gene variants could affect hot flashes.
While those studies identified
several gene variants that appeared to increase the risk of each disorder, none of the associations were strong enough to meet the strict standards of genome - wide significance.
Then he sent the new
gene variants into the cell, where the bacteria's own machinery for self - assembling DNA took over and incorporated the genes into the genome.
However, the research team now reports that menopause may begin at an earlier age in white female smokers who are carriers of two
different gene variants.
Three of the darker -
skin gene variants appear to have evolved from variants linked with less pigment.
The new study should help by identifying distinct populations in which to look for medically
important gene variants.
Strong swimming sperm's secret
A gene variant can make sperm strong and speedy, a study of wild mice suggests.
Scientists are now thinking that DNA might play a role in the way the body processes caffeine, with a certain
gene variant slowing the metabolism of coffee.
However, if a pregnant mother does not have good nutrition, her baby's immune system is less likely to activate the cancer -
fighting gene variant.
So gene variants that have been selected for are often found surrounded by the same stretches of DNA, whereas those that have not been selected do not have consistent genetic neighbours.
More recently, improved gene - sequencing technology and larger population studies have made it possible to
detect gene variants that appear in only 1 percent of the human population.
Next - generation DNA - sequencing developments will push the cost of DNA sequencing down to the point that anyone can afford to have complete knowledge of their
personal gene variants.
There are a number
of gene variants that may hold the key to a healthy old age life.
For eight of these sites, the researchers were able to identify a
specific gene variant that influences risk for both diseases.
Having more schizophrenia risk -
related gene variants was also associated with a greater decline in lifelong cognitive ability.
A statistical algorithm then analyzes
which gene variants the fetus has inherited from each parent and detects new mutations in the child's DNA.
The selection process increases the likelihood that
certain gene variants will be passed on, along with the risk for undesirable health issues.
ASHG 2015: Common
Gene Variant Linked to Chromosome Errors and Early Pregnancy Loss ASHG Press Release — October 8, 2015
«While this study does not show that these
common gene variants produce schizophrenia per se, it elegantly suggests that these variants may contribute to declines in intelligence, a clinical feature associated with schizophrenia,» commented Dr. John Krystal, Editor of Biological Psychiatry.
According to senior researcher Shoukhrat Mitalipov, «Every generation on would carry this repair because we've removed the disease - causing
gene variant from that family's lineage.»
Subjects were individuals who had a history of heart attack and / or coronary artery disease and who carry one or more of the at -
risk gene variants deCODE has linked to heart attack.
Slow - healing or non-healing bone fractures in otherwise healthy people may be caused
by gene variants that are common in the population, according to Penn State College of Medicine researchers.
Mekile says she plans to use her award to establish a link
between gene variants in patients and autism - like neurological disorders.
Refining the impact of TCF7L2
gene variants on type 2 diabetes and adaptive evolution.
In principle, identifying specific
gene variants as risk factors for poor fracture healing would lead not only to the development of patient screening tests, but also to a better understanding of the basic biology of how fractures heal.
To illustrate how it works in practice, Koenig offers the example of a professional hockey player whose profile shows that he has
gene variants found in people who respond rapidly to lactic - acid threshold training.
Phrases with «gene variants»