Articles tagged with Genetic Variation
Researchers found that genetic variations from Neanderthals shape modern human brain structures, particularly those involved in tool use and visualization. This may lead to trade-offs with social brain function, potentially contributing to deficits seen in these disorders.
A large-scale study has identified over 50 new genetic markers associated with systemic lupus erythematosus (SLE), a common autoimmune disease. The research found that certain ethnic groups are more likely to develop SLE and experience more severe symptoms.
A study led by the University of Cambridge identified sixteen common genetic variants linked to muscle strength, revealing biological insights into complex traits. The findings suggest that genetic variation in genes related to muscle function may influence differences in strength in the general population.
A study by Harvard University found a genetic 'switch' that controls the activity of a key skeletal gene related to height, which is also linked to an increased risk of osteoarthritis. The variant, more prevalent in Eurasian populations, favors shortness and is associated with lower GDF5 activity in growth plates.
Researchers from the Wellcome Trust Sanger Institute and their collaborators have created a high-resolution map of the disease, pinpointing 18 genetic variants with over 95% certainty. This breakthrough has significant implications for the development of new treatments and personalized medicine for IBD.
A team of international researchers has identified seven risk genes for insomnia, revealing the genetic basis of this common health complaint. The study found a strong genetic overlap with anxiety disorders, depression, and neuroticism, suggesting that shared biological mechanisms contribute to insomnia and these traits.
Research reveals that nutritional factors significantly impact genetic variation and mutation patterns in bacteria, leading to distinct evolutionary paths. Environmental stresses like starvation for essential elements determine the availability of mutations, influencing the emergence of traits dependent on specific mutations.
Researchers identified a risk locus for urinary incontinence near the endothelin gene, which is involved in bladder contraction. The study suggests that drugs targeting this pathway may help alleviate symptoms, offering new hope for women suffering from stress and isolated urgency incontinence.
Scientists have discovered a genetic variant that enables the Mylopotamos Greek population to live long and healthy lives despite consuming an animal-rich diet. The variant, rs145556679, is associated with lower levels of 'bad' natural fats and cholesterol, reducing the risk of cardiovascular disease.
Researchers found distinct genetic variations in mountain and savannah honey bees that help them adapt to high altitudes. The study reveals a shared evolutionary history between the two sub-species.
Researchers have discovered two genetic variants associated with bicuspid aortic valve development, which affects the heart's ability to pump oxygen-rich blood. The study, published in Nature Communications, found that these variants affect a key cardiac transcription factor called GATA4, leading to disruptions in valve formation.
Researchers at George Washington University found a co-occurrence of COMT and BRCA 1/2 variants in women who remained cancer-free, suggesting potential protective effects. Further research is needed to confirm the findings and explore the mechanisms behind this association.
A recent study from Indiana University challenges the use of CRISPR-Cas9 technology to control disease-carrying insect populations. The research found that naturally occurring genetic variation can render CRISPR-based methods ineffective, complicating efforts to prevent diseases like malaria and crop blights.
Researchers analyzed DNA samples from over 95,000 participants to examine the association between Alzheimer's disease and low BMI. The study found no causal relationship, suggesting that individuals with Alzheimer's disease are more likely to have low BMIs due to weight loss in the early stages of the disease.
A new study using MaPSy technology identifies nearly 500 genetic mutations that cause errors in gene splicing, which can lead to diseases. The research also discovers patterns and predictions of problems, including vulnerabilities in genes and specific mutations that can be fixed.
Researchers have developed a new collection of induced pluripotent stem cells (iPSCs) to study human genetic variation. The iPSCORE collection includes 222 iPSC lines from diverse ethnic groups, enabling researchers to investigate the segregation of traits and their molecular mechanisms.
A genome-wide analysis identified 30 known risk variants, accounting for 6.5% of the inherited component of risk. The variants are common and have small effects on risk, with women carrying multiple variants still having a low lifetime risk of 2.8%.
A study on European populations reveals genetic adaptations to dietary changes, influencing the production of vital fatty acids. The findings suggest that Europeans are adapting to a diet rich in plant-derived fats, while those with high animal fat intake produce more long-chain PUFAs.
A common genetic variant, TMEM106B, accelerates normal brain aging by up to 12 years in people aged 65+, highlighting potential new targets for preventing age-associated brain disorders like Alzheimer's disease. Researchers also identified another variant associated with brain aging within the progranulin gene.
African American women who carry a specific genetic variant of the p53 gene may have a nearly 70% increased risk of developing breast cancer before menopause. The study found an association between the polymorphism and breast cancer risk in premenopausal women, highlighting disparities in cancer research.
A team of scientists has conducted the largest genome-wide association study on proteomics to date, revealing 539 associations between protein levels and genetic variants in complex diseases. The study found these associations overlap with risk genes for 42 complex conditions, such as cardiovascular disease and Alzheimer's disease.
Researchers identified a genetic variant in neutrophil cystolic factor 1 (NCF1) associated with increased risk for autoimmune diseases. The study found that increased NCF1 protects against systemic lupus erythematosus (SLE), while decreased NCF1 raises SLE risk.
Researchers discovered 83 genetic variations affecting adult height by more than 2 centimeters, influencing bone and cartilage development. The study's findings may help identify genetic variations that influence common diseases and develop personalized treatments.
A massive international study of over 750,000 people has uncovered 83 rare genetic variants that significantly affect human height. The findings shed light on previously unknown biological pathways involved in skeletal growth, with some variants influencing height by more than 2 cm.
Scientists have identified a genetic variant that doubles an individual's risk of developing ulcerative colitis and uncovered novel genetic associations to IBD risk. The study provides clues on new drug targets for IBD treatment.
Researchers identified genetic variants that affect Crohn's disease severity, but found these variants do not determine individual risk of developing the condition. The study suggests new pathways for treating established disease.
Researchers have identified rare genetic variants linked to observable physiological characteristics in over 50,000 individuals. This approach has the potential to inform healthcare and prevent undiagnosed single-gene disorders like familial hypercholesterolemia.
A University of Florida study found that discrimination interacts with certain genetic variants to alter blood pressure and increase the risk of hypertension. Vicarious unfair treatment, or experiencing discrimination through close friends and family, also had a significant impact on stress levels.
Researchers have identified six loci linked to personality traits and found correlations between these traits and distinct psychiatric disorders. Personality factors such as extraversion and neuroticism were associated with specific genetic variants.
Researchers investigated whether genetic variation in an immune system component called the complement system may contribute to vision loss during anti-VEGF therapy in wet AMD patients. Genetic variations were found to lead to complement system dysregulation, which was enhanced by blocking VEGF signaling.
A recent study by Guimarães et al. found that patients with atypical cutaneous leishmaniasis (ACL) in northeast Brazil have distinct genetic variations and higher levels of inflammatory cytokines. ACL is characterized by longer disease duration, more lesions above the waist, and reduced effectiveness of antimony treatment.
A recent study identified five genetic variants associated with higher levels of isoleucine, leucine, and valine, which are linked to an increased risk of type 2 diabetes. The researchers also found that these genetic variants were more common in individuals with impaired metabolism of branched-chain amino acids.
A team of scientists found that corals in the genus Orbicella have high genetic diversity, allowing them to adapt to environmental changes. This discovery predicts their potential survival under future climate change, making them a key species for conservation efforts.
Researchers identified a genetic variant in MYBPC3 that predisposes South Asians to hypertrophic cardiomyopathy, an enlarged heart condition. Early screening of this variant can help reduce the incidence of sudden cardiac death in this population.
A new technique allows researchers to quickly and cheaply generate DNA variants in a particular stretch of DNA, enabling the distinction between harmless and potentially hazardous genetic variations. This technique has the potential to speed up gene catalog creation and aid clinicians in interpreting genetic mutations.
Researchers at Wayne State University School of Medicine have shown that interactions between genetic variants and environmental exposures significantly impact human traits and diseases. The study highlights the importance of precision medicine initiatives for communities with different ancestries, including urban areas.
African genetic variants associated with increased risk of albuminuria and low glomerular filtration rate among Hispanic/Latino adults, highlighting the importance of ancestry in kidney disease risk, researchers say.
An international study has clarified which specific genes are affected by genetic variants associated with schizophrenia, providing a blueprint for researchers to tackle complex diseases.
A genome-wide association study identified genetic variants that contribute to the formation of healthy facial traits, including nose size and face width. The study confirmed previous findings and provided insights into the role genes play in facial development.
A Harvard Medical School study reveals genetic tests may have disproportionately misdiagnosed hypertrophic cardiomyopathy in black Americans due to racially biased methodologies. The findings highlight the importance of using diverse control populations to ensure accurate test results.
Researchers sequenced exomes of 60,706 individuals from diverse populations to identify 7.4 million genetic variants, providing unprecedented resolution into low-frequency protein-coding variants. The analysis found only nine pathogenic variants with strong disease associations.
A study by Hokkaido University researchers found that juvenile songbirds exhibit familial differences in their earliest vocal babblings, suggesting a possible genetic basis for these variations. The findings reveal that the variations are more pronounced among different families and persist even when deafened.
A study identified two genetic variants associated with an increased risk of radiotherapy side-effects in prostate cancer patients, including rectal bleeding and urinary frequency. The findings suggest that these variants are located in genes expressed in tissues exposed to radiation.
A recent study identified a genetic variant associated with higher BMI levels and increased efficiency of fat storage among Samoans. This 'thrifty' variant, found on chromosome 5, is linked to the islands' high obesity rates and may have evolved as an adaptation to food scarcity in ancient times.
Researchers used a genetic scoring technique to predict academic achievement from DNA, achieving 10% accuracy. This surpasses previous methods like gender and 'grit', which explained only 1-5% of the variance in educational achievement.
Researchers sequenced whole genomes and epigenomes of 1,001 Arabidopsis plants to illuminate evolutionary history and interaction between genetic and epigenetic variation. The study found that approximately 25% of genes exhibit diversity in their methylation state, with correlations to climate and geographic location.
A study led by Queen Mary University of London suggests that genetic variation in ribosomal DNA could be driving how a mother's diet during pregnancy affects her offspring's weight and attributes. This discovery may shed light on the conundrum of disease inheritance, particularly for conditions like type 2 diabetes.
A large-scale genetic study has identified 38 new susceptibility loci for migraine, with most variants overlapping with genes regulating the vascular system. The findings support the importance of blood vessels in migraine attacks and hold promise for developing personalized treatments.
The study reveals that genetic variants can affect protein levels through post-transcriptional effects, including direct protein-protein interactions. By combining quantitative proteomics and transcriptomics, researchers can infer the proteome-wide effects of a specific genetic variant.
A new study published in the International Journal of Epidemiology found that genetic research in large-scale biobank studies can significantly improve the drug development pipeline and reduce costs. The study used a genetic variant linked to cardiovascular disease to demonstrate the value of Mendelian randomization.
A genetic variant in the HO-1 gene is highly associated with development of AKI following cardiac surgery, leading to decreased expression and iron toxicity. Testing for this variant may help identify patients at risk, enabling therapeutic strategies to mitigate kidney damage.
Researchers developed a tool to untangle which genetic variants actually create risk for heart disease, diabetes, and other diseases. The 'massively parallel reporter assay' technique lets scientists probe thousands of DNA variations to identify ones that affect gene regulation.
A new gene, ANKRD55, has been discovered to play a significant role in the neuro-inflammation process of Multiple Sclerosis. The study found that genetic variants associated with MS increase the production of ANKRD55 transcripts in immune cells, suggesting a key gene involved in deregulation.
Two papers address challenges in interpreting clinical genome and exome sequencing results. The CSER Consortium has developed approaches for using sequencing to diagnose rare diseases, cancer, and other conditions. A new set of guidelines may help different labs interpret sequencing results consistently.
A large-scale genetic study identified 74 variants linked to educational attainment, which also influence cognitive function and personality traits. The findings suggest that genetic factors account for a small fraction of individual differences in education, with many genes playing a role in brain development.
Researchers at Cedars-Sinai Medical Center discovered that genetic variants can prevent 'good' gut bacteria from functioning properly, contributing to the development of Crohn's disease. This study provides new insight into the interaction between genes and microorganisms in promoting health and preventing inflammation.
Researchers identified two genes associated with twinning, including one linked to higher levels of FSH that may lead to multiple eggs being released at once. The findings have implications for infertility treatments and may help predict how women respond to fertility treatments.
Researchers identified thousands of RNA splicing mutations involved in complex traits and diseases, enabling accurate functional interpretation of genome-wide association study data. The findings highlight the importance of RNA splicing in linking genetic variation to disease.
A large-scale international study has identified three genetic variants associated with happiness and two variants linked to depression. The findings provide new insights into the genetic basis of neuroticism and the interplay between nature and nurture in shaping human happiness.
The Channel Island fox population has been found to have a surprising absence of genetic variation, with one population on San Nicolas Island showing an order of magnitude lower variation than any other known species. This near-absence of genetic variation poses a puzzle as to how the foxes have managed to thrive despite it.