Articles tagged with Genetic Variation
Researchers identified 7 genetic variants associated with surgical rhizarthrosis and 3 variants linked to nonsurgical rhizarthrosis. These findings suggest a potential genetic influence on the need for surgery, hinting at biological mechanisms underlying the disease.
Researchers found that hepatitis E virus (HEV) mutations made treatment with individual drugs less effective, highlighting the need for combination therapies. The study's findings also provide insights into the evolutionary dynamics of HEV, paving the way for next-generation antiviral treatments.
A new analysis focusing on people of African ancestry identified three gene variants linked to glaucoma, including two likely causal variants and one associated with cup-to-disc ratio. The study's findings could enhance early screening and personalized therapeutic interventions for this population.
Researchers have identified a significant link between inherited genetic variants and the development of rare blood cancer, myeloproliferative neoplasms (MPNs). Inherited genetic variants can influence whether a spontaneous mutation increases the risk of developing MPN.
Researchers discovered a link between PPFIA3 dysfunction and a rare neurodevelopmental disorder. The study identified 17 unique variants in the PPFIA3 gene, which cause delayed development, intellectual disability, and other symptoms.
A machine-learning enabled risk assessment model detects 72.8% of variants causing over 1,000 cases per million people within a week, increasing to 80.1% after two weeks. The model identifies key factors such as variant spike mutations and early infection trajectories.
The study found that solely the omicron variant influences cell cycle genes, leading to increased p21 expression and a senescence-associated secretory phenotype. This results in premature cellular senescence, potentially contributing to the reported cytokine storm and development of long-COVID.
Researchers developed an innovative machine learning tool, LoGoFunc, to predict pathogenic gain- and loss-of-function variants across the human genome. The tool distinguishes between different types of harmful mutations, offering valuable insights into diverse disease outcomes.
A study by researchers at the Medical University of Vienna found that natural killer cells may play a crucial role in protecting against multiple sclerosis (MS) disease. The investigation revealed that strong EBV-specific and autoreactive immune responses combined with poor autoimmunity control increase MS risk.
Genetic material from Neanderthal ancestors may have influenced the preference for waking up early in some people. Studies found that introgressed genetic variants from Neanderthals are associated with increased morningness and a shorter circadian period, which is beneficial at higher latitudes.
Researchers at Weill Cornell Medicine discovered a genetic variant in the GIP receptor that may help individuals resist obesity. The variant enhances insulin release and glucose metabolism, allowing mice with the variant to process sugar more efficiently and stay leaner.
Researchers found that a breakthrough infection builds upon existing memory B cell pool and introduces random mutations that prepare antibodies for new variants. Broad neutralizing antibodies can neutralize all tested Omicron variants.
Researchers have created the first extensive map showing which genetic changes can cause disease, leading to valuable insights into neurodevelopmental disorders and cancer. The study reveals that 90% of previously unexplained genetic changes' impact on health is significant, promising speedier diagnosis and new treatment avenues.
Researchers have developed gene-specific classification criteria for assessing the medical relevance of unclear genetic variants that can lead to hereditary colorectal cancer. The new criteria are expected to reclassify a significant proportion of these variants as harmless, providing relief to carriers worldwide.
A recent study by Goethe University Frankfurt has identified a mechanism that could be a suitable starting point for developing novel drugs against leukemia cells. The researchers discovered that the mutated NPM1 gene variant drives pro-autophagic activity, enabling cancer cells to recycle their structures and meet their needs.
Researchers examined venom genes in bees and other hymenopteran taxa using comparative genomics. They found that 12 'families' of peptides and proteins were present in all analyzed hymenopterans, indicating a common ancestor possessed these genes. This suggests that Hymenoptera insects are venomous as an entire group.
Researchers developed a non-invasive genetic test that can survey the entire fetal exome without amniocentesis. The test was able to capture inherited and new variants associated with prenatal diagnoses, demonstrating high sensitivity for discovering single-base DNA changes.
Researchers identified 38 unique pathogenic variants in 57 patients, including novel variants specific to the Kazakh population. These variants were associated with an increased risk of triple-negative breast cancer and family history of breast cancer.
Researchers discuss a new approach integrating genomic, epigenomic, transcriptomic, and machine learning methods to identify functional genetic variants and characterize their mode of action in regulating target genes. This method aims to improve understanding of disease etiology and prioritize causative inherited genetic variants.
A novel workflow has been developed to identify patients with 5q-SMA, a common type of spinal muscular atrophy, more accurately. The new approach uses a bioinformatics pipeline that masks the paralogous regions of the SMN1 gene, allowing for more precise detection of genetic variants.
A new USC study reveals that variants of the autism-linked gene SYNGAP1 can disrupt early brain development in the cortex, a region involved in higher-order cognitive functions. The research found that disease-causing variants of SYNGAP1 alter the cells' cytoskeletons and lead to disorganized neural circuits.
Researchers have identified 451 genetic variants associated with prostate cancer risk through a comprehensive analysis of nearly 950,000 men. The findings improve the accuracy of genetic risk scores and may lead to personalized screening recommendations for men at higher risk.
A new study analyzing lice genetic diversity found that head lice arrived in the Americas twice – once with early human migrants and again during European colonization. This discovery supports existing theories on human migration and provides insights into how lice have evolved alongside humans.
A study of 2,458 children found that genetic predisposition to insomnia affects sleep patterns, including frequent awakenings and difficulty initiating sleep. The research suggests a lifelong 'poor sleeper' trait, emphasizing the importance of early recognition and prevention.
The study demonstrates that concurrent DNA and RNA sequencing improves the detection of novel variants in individuals undergoing hereditary cancer testing, expanding identification of those with hereditary cancer predisposition. This advancement enables personalized therapeutics and surveillance for these individuals.
The study has shed light on how cats evolved into different species and how genetic changes relate to survival abilities like smell detection. It also revealed that cat genomes tend to have fewer complex genetic variations than other mammal groups, such as primates.
Researchers developed a mouse model with human-like telomeres by making a single genetic alteration, providing a valuable resource for studying aging and cancer. The discovery highlights the importance of the RTEL1 protein in determining telomere length.
Researchers at Hokkaido University identified 2-thiouridine as a broad-spectrum antiviral drug candidate targeting ssRNA+ viruses. It inhibits viral replication and increases survival rates in mice models for dengue and COVID-19.
A study involving 119,606 Chinese newborns found that concurrent hearing and high-throughput genetic screening significantly enhances congenital hearing loss management. The detection rate of certain gene mutations was also reported, highlighting the importance of considering multiple factors for accurate diagnosis.
A new AI tool named EVEscape can predict future viral variants of concern, potentially helping scientists develop more effective vaccines and therapies. The tool uses evolutionary and biological information to forecast which mutations will occur in viruses like SARS-CoV-2.
Researchers from the University of Virginia Health System have made significant discoveries about the genetic influences on fatty acid metabolism in diverse populations. The study found broad similarities among groups but also notable differences, highlighting the need for genetic studies in diverse groups.
Researchers discovered that people carrying three Neanderthal gene variants in the SCN9A gene are more sensitive to certain types of pain. The study found an association between the variants and a lower pain threshold in response to skin pricking after prior exposure to mustard oil.
Researchers have developed STARVar, an artificial intelligence-powered method that leverages diverse data sources to identify genetic variants associated with diseases. The tool prioritizes genomic variants based on real-world patient symptoms, providing a more nuanced understanding of clinical presentations.
Researchers identified a circulating tumor DNA (ctDNA) biomarker that can predict disease recurrence and response to treatment in patients with BRAF-negative melanoma. The study found that measuring ctDNA levels and variants can help tailor therapy and improve patient outcomes.
A genome-wide association study reveals 34 genes potentially involved in choosing a vegetarian diet, including those related to lipid metabolism and brain function. The findings suggest that genetics play a role in the ability to subsist on a vegetarian diet.
Researchers from The University of Queensland and The Alfred hospital in Melbourne have identified gene variants associated with a higher risk of nodular melanoma. The study found that four genes with rare DNA variants were linked to the aggressive subtype, which accounts for most melanoma deaths.
A study published in The Lancet Oncology reveals a genetic explanation for increased second-cancer risk and mortality among childhood cancer survivors. The research identified specific genes associated with this increased risk, enabling personalized cancer screening and prevention strategies.
Research reveals that female fruit flies pre-select for males with superior genes before influencing sperm storage to ensure compatible fertilization. The study provides new insights into the mechanisms and consequences of mate choice, shedding light on genetic variation and species evolution.
Five lung stem cell variants dominate CF lungs, causing inflammation, fibrosis, and mucin secretion. CFTR modulators fail to suppress these inflammatory variants, suggesting they as key targets for new drugs.
A new study reveals that consanguinity may increase the risk of common diseases such as type 2 diabetes and post-traumatic stress disorder. The research analyzed genomic data from diverse groups to investigate the relationship between autozygosity, or genetic relatedness, and disease prevalence.
Despite high levels of inbreeding, the Svalbard reindeer population has developed adaptations to thrive in extreme Arctic conditions. Researchers found that inbreeding may help eliminate harmful mutations, leading to a viable and genetically resilient population.
A study using engineered mice found that BA.5, a contagious omicron subvariant, replicates rapidly early during infection, causing significant weight loss and high levels of inflammatory cells and cytokines in lungs.
A recent study published in Nature Communications has identified five rare genetic variants associated with male-pattern hair loss. The researchers analyzed the genetic sequences of 72,469 male participants from the UK Biobank project and found associations between rare variants in genes such as EDA2R, WNT10A, HEPH, CEPT1, and EIF3F.
Scientists have identified thousands of non-coding genetic variants linked to Alzheimer's disease, focusing on their impact on microglial gene expression and function. The study found that turning off specific regions can affect multiple genes, highlighting the complex mechanisms underlying AD.
A Geisinger-led study found that knowing the genetic cause of high cholesterol increases heart disease risk more than having high cholesterol levels alone. The study used UK Biobank data and observed distinct differences in heart disease rates among participants with different genetic causes.
Researchers at Monell Chemical Senses Center identified genetic markers that can predict a child's reaction to sweetened medicine. These findings suggest that tailoring medications to individual tastes could help prevent unintentional poison exposures among children under six years old.
Researchers have identified 439 genetic variants that regulate gene expression and may contribute to the development of schizophrenia. This discovery could pave the way for more precise interventions and therapies by providing insights into the complex genetic architecture underlying the condition.
A recent study published in Cell found that genetic variants can influence the risk of cardiovascular disease by interacting with environmental factors. For example, carriers of certain sequence variants are protected against the negative effects of alcohol consumption on coronary artery disease.
A new SARS-CoV-2 variant Eris has been detected, showing an advantage in evading neutralizing antibodies and increasing infectivity. The study found that Eris is less effectively neutralized by antibodies present in the blood of vaccinated individuals or those with a previous infection.
A new study published in Genome Biology analyzed the genomes of 2000 dogs from 321 breeds, revealing 25 major groups that match expected breed origins. The research found significant genetic variation among breeds, with wolves exhibiting 14% more variation than dogs.
Researchers at Pitt Public Health analyzed thousands of human genomes to find new gene variations influencing Alzheimer's disease risk. They identified 15 additional variations in the APOE gene and other genome areas that may influence disease risk, although more research is needed for definitive conclusions.
The study validates a comprehensive genomic profiling assay, NeXT Dx, which detects single nucleotide variants, indels, copy number alterations, and gene fusions. The assay demonstrates high analytic sensitivities and specificity, providing personalized recommendations critical to clinical decision-making.
New SARS-CoV-2 variants, such as BQ.11 and XBB.1.5, bind to cells more tightly and evade antibodies more efficiently than earlier variants, allowing reinfections and breakthrough infections. Previous infection or vaccination can generate antibodies that recognize some proteins on newer variants, reducing the risk of serious illness.
Research from Aarhus University suggests that smoking may increase the risk of depression, bipolar disorder, and schizophrenia by 250 percent. The study analyzed genetic data from over half a million people and found that certain genetic variants linked to smoking also contribute to mental illness.
A team of scientists has generated and analysed 2000 canine genomes, creating a toolkit for answering complex biological questions. The study reveals genetic diversity in breed morphology, behaviour, and disease susceptibility, as well as the structure of the genome.
A new study has identified thousands of shared genetic variants between patients with irritable bowel syndrome (IBS) and psychiatric disorders such as bipolar disorder, schizophrenia, depression, and anxiety. This discovery provides a new understanding of the brain-gut axis and holds promise for developing effective treatments for IBS.
A computational genetic model has been developed to predict individual genetic risk of developing breast cancer based on a woman's genetic profile. The model uses data from a large-scale international study and identifies women at high risk, who may benefit from earlier and more frequent screening.
A new study has identified four genetic variants associated with the direction of human scalp hair whorls, revealing a polygenic inheritance pattern. The findings may help unravel biological processes related to abnormal neurological development.
A new study revealed that people in the UK have facial skin with more DNA damaged from the sun than those in Singapore, leading to a higher risk of developing keratinocyte skin cancers. This is despite lower UV light exposure levels in the UK.
Researchers found that African ancestry patients with dilated cardiomyopathy have fewer clinically actionable variants in DCM genes compared to European ancestry patients. The study enrolled 1,198 patients with dilated cardiomyopathy, revealing a racial imbalance in genetic trials for heart failure.