Articles tagged with Genetic Variation
Researchers found that many changes to human DNA had opposing effects, with some variants making enhancers stronger while others made them weaker. This discovery has implications for understanding human evolution and the potential link between human DNA variations and psychiatric diseases.
Researchers have identified a new genetic pathway involved in regulating sleep from fruit flies to humans. The Pig-Q gene is associated with sleep regulation in both humans and animals, providing a novel insight into the genetics of insomnia.
Researchers developed a genotype-first approach that traces genomic variants back to genetic disorders, discovering new relationships between genes and clinical conditions. This approach broadened traits and symptoms associated with known disorders and offered insights into newly described disorders.
Researchers examined associations between APOE ε2 and ε4 alleles, polygenic profiles, and Alzheimer's disease biomarkers. They found links between ε4 alleles with plasma and CSF Aβ42 and CSF tau, as well as differences in associations with tau and Aβ42.
Researchers identified six genes associated with dementia risk in people of African ancestry, differing from those found in European populations. The study highlights the need for increased representation of non-European ancestry groups in genetic research to address health disparities.
Researchers have developed an improved genetic test that allows for more accurate prediction of which parent's genes led to an individual's increased cancer risk. The new test confirms whether a cancer predisposing gene variant is present in a patient and determines its origin, enabling targeted prevention efforts.
Black bears with a specific mutation in the TYRP1 gene have reduced eumelanin production, resulting in a cinnamon coat. The team found that this mutation arose spontaneously around 9,360 years ago in western US black bears and spread as they migrated across their range.
A recent study discovered a link between soluble urokinase plasminogen activator receptor (suPAR) and the development of atherosclerosis, a hardening of arteries that affects over a billion people worldwide. SuPAR was found to cause inflammation in blood vessels, leading to cardiovascular events and increasing risk of heart disease.
Researchers at the University of Bonn have uncovered new correlations between genetic mutations and cleft lip and palate. The study found that new mutations near the SPRY1 gene and transcription factor Musculin may contribute to disease risk, providing new insights into the biological mechanisms underlying the condition.
A Geisinger study of over 90,000 patients confirmed a strong link between genetics and neuropsychiatric disorders. The research revealed that approximately one in 100 participants carried a rare gene variant increasing the risk for conditions like schizophrenia and autism spectrum disorder.
Research confirms a strong link between four genetic mutations and progressive multifocal leukoencephalopathy (PML), a rare but often fatal brain infection. Patients with these variants are at an increased risk of developing PML, highlighting the potential for genetic screening to reduce disease risk.
Researchers from Japan have developed an RNA interference method using antisense oligonucleotides to correct a genetic defect in Fukuyama Muscular Dystrophy. This approach has shown promise in treating patients with the disease, which is characterized by generalized muscle weakness and intellectual disability.
A study found that genetic variants near ERAP2 and TICAM2 provided protection against Yersinia pestis, the bacterium responsible for the Black Death. These variants were also associated with improved detection and resistance to other pathogens, but at a cost: increased risk of autoimmune disorders like Crohn's disease.
Researchers at the University of Huddersfield used ancient DNA to reveal large-scale immigration in Early Bronze Age Orkney, contrary to popular belief. The findings also showed unusual female-dominated immigration during this period.
A study suggests that visceral fat cells, rather than subcutaneous fat cells, are more susceptible to infection by the COVID-19 virus. This increased susceptibility leads to a higher viral load and production of pro-inflammatory cytokines, which can exacerbate severe disease.
Researchers identified a genetic variant linked to digestive disturbances in patients with Chagas megaesophagus, a disorder characterized by esophageal dilation and loss of motility. The study suggests that increased interferon-gamma production leads to mitochondrial dysfunction, contributing to the development of the disease.
Research on Fanconi anemia reveals its link to aggressive head-and-neck tumors due to gene-copy chaos, increasing the need for new treatments. The study also highlights a connection between smoking and drinking and elevated cancer risk.
The study found that the Erfurt Jewish community was more genetically diverse than modern-day Ashkenazi Jews, with at least two distinct groups. The research team discovered that the founder event, which makes all Ashkenazi Jews today descendants of a small population, happened before the 14th century.
A study of over 1,000 healthcare workers found that medical masks may be as effective as N95 respirators in preventing COVID-19 infection. However, the results varied across countries and were influenced by factors such as vaccine use and variant circulating during the pandemic.
Gene variants associated with leukaemia produce 'rogue' killer T cells that drive autoimmune diseases, according to a new study. These rogue cells can cause autoimmune disease even at low levels, highlighting the connection between leukaemia and autoimmunity.
Researchers at the University Hospital Bonn have discovered a new function of CRISPR/Cas9 gene scissors, which produce small signal molecules that bind to proteins, activating an emergency response. This discovery opens up new possibilities for treating diseases using CRISPR technology.
Researchers have identified a tailor-made pocket feature in the spike glycoproteins of deadly coronaviruses, including SARS-CoV-2, MERS, and Omicron. This finding could lead to the development of a pan-coronavirus treatment that exploits this pocket feature to stop virus infectivity.
A new study explores the value of 'trash data' from cancer genome sequencing, identifying new strategies to uncover previously unexplored information. The researchers found that genomic and transcriptomic data contain relevant information that can help elucidate carcinogenesis and discover putative biomarkers with clinical applications.
A research team at Pohang University of Science & Technology has developed a tailored neutralizer that can adapt to all kinds of mutations in the virus. The hybrid agent mimics the principle of hotspot interaction between the virus and the hACE2 receptor, inhibiting its penetration into cells.
Researchers have identified genetic variants associated with natural resistance to SARS-CoV-2, including a gene linked to mucin production. These findings may help develop vaccines and treatments for viral diseases by understanding the mechanisms underlying immune responses.
Researchers identified five genetic variants that progressively increase the risk of becoming nearsighted with more schooling, especially for university-level education. These findings provide new insights into biological pathways causing nearsightedness and its interaction with lifestyle factors.
A large-scale analysis of over 2,700 species of anurans reveals that the vertebral stripe evolves repeatedly and is adaptive to the animal's habitat. The study identifies a key gene linked to the stripe pattern, which may allow species to adapt to environmental changes.
A novel HNF1A gene variant has been found to cause monogenic diabetes, affecting almost seven percent of all cases in Greenland. This discovery may pave the way for precision treatment using tablet therapy with sulphonylurea, offering a simpler and cheaper alternative to insulin.
Researchers from SickKids have uncovered new genes and genetic changes associated with autism spectrum disorder, including 134 linked genes and gene copy number variations. The study offers a better understanding of the 'genomic architecture' underlying this disorder.
The study reveals the structure of the 15-subunit IFT-B complex, a crucial component in cilia formation and maintenance. The complex's elongated and flexible nature is consistent with previous low-resolution reconstructions, and two configurations are identified that may drive bi-directional movement.
Research reveals natural genetic variation impacting brain development contributes to autism's diverse behaviors, with implications for tailored support. The study sheds light on the complex relationships between genetics, brain development, and behavior in individuals with autism.
A genetic variant associated with a 10-15% reduction in fat storage has been identified in 60% of Europeans. Researchers studied the effect of this variant in mice and found it to be linked to leanness, highlighting the complex interplay between genetics and obesity.
Researchers developed STAARpipeline to analyze rare genetic variants, enabling comprehensive analysis of noncoding variants. The tool found significant associations in gene-centric and non-gene-centric analyses, advancing genetic research.
Researchers identified a genetic variant that predisposes people to being slim, carried by 60% of Europeans. The variant affects the amount of fat stored in the body and is associated with the biochemical signalling pathway that tells cells what nutrients are available.
Researchers found that the presence of one Mindbomb1 mutation does not always lead to non-compaction cardiomyopathy, but depends on genetic context provided by other gene mutations. The study identified modifier genes contributing to disease severity and diversity in affected individuals.
A team at the University of Exeter has found genetic changes in a region that controls the activity of the genome, turning on or off genes, which led to the discovery of the cause of Congenital Hyperinsulinism. This breakthrough could unlock new causes of rare diseases and pave the way for improved treatments.
A study published in PLOS Genetics found that genetic variants linked to systemic lupus erythematosus (SLE) may also provide protection against severe COVID-19 infection. The researchers identified TYK2, a gene involved in interferon production, as the key locus behind this protective effect.
A rare genetic variation in the X chromosome's TLR7 gene has been identified as a five times greater risk factor for severe COVID-19. The study, conducted across 12 countries, highlights the importance of host genetics in COVID-19 outcomes.
Researchers found elevated C4A levels in first-episode psychosis patients who later developed schizophrenia, correlating with increased IL-1beta and synapse density. This suggests a link between inflammation and genetic risk variants in schizophrenia.
Two new discoveries led by Cedars-Sinai Cancer investigators improve understanding of ovarian cancer's development and suggest personalized therapeutic approaches. They identified four new genetic regions linked to increased ovarian cancer risk and found that some tumors may develop resistance to chemotherapy from an early stage.
Recent scientific studies have shed light on the effects of exposure to earlier SARS-CoV-2 forms on immune response to Omicron variants. Researchers identified a pan-variant antibody with ultra-potent neutralizing potency, which may help reduce treatment resistance.
Researchers at Massachusetts General Hospital analyzed data from March 2020 to June 2022 to assess the severity of SARS-CoV-2 Omicron BA.2 subvariant compared to earlier variants. The study found that BA.2 was associated with lower mortality rates and reduced need for hospitalizations, invasive ventilation, and intensive care admissions.
A genetic variant associated with low levels of HDL 'good' cholesterol and high triglycerides has been identified in Polynesian people. This discovery provides new insights into the genetic causes of high cholesterol and may lead to the development of more effective treatment options.
Research found that the Black Death drove changes in immune-related genetic variants, affecting disease susceptibility. A specific gene variant, ERAP2, was associated with increased protection against the plague, but also linked to autoimmune diseases like Crohn's disease.
Researchers identified unique mutations in the omicron spike protein adapted to the mouse receptor, suggesting possible animal origin. The findings also highlight the importance of epidemic surveillance of rodents to stop new COVID-19 variants.
Researchers used machine learning to predict sugarcane yield based on DNA. The technique improved accuracy by over 50% compared to traditional breeding methods.
A study reveals that BA.2.75.2, a new Omicron sublineage, largely evades neutralizing antibodies and is resistant to several monoclonal antibody treatments, posing an increased risk of SARS-CoV-2 infections this winter.
Researchers have analyzed data from 5.4 million people to uncover 12,000 genetic variants influencing height, explaining 40% of differences. This breakthrough enables the prediction of height with greater accuracy, particularly for children, and has implications for medical investigation and police investigations.
The study found that genetic variants associated with height are concentrated in regions covering just over 20% of the genome. The variants identified explain 40% of the variation in height for people of European ancestry, and around 10-20% for those of non-European ancestry.
Researchers have found evidence of genetic diversity in the prion protein gene of endangered Eld's deer, which could provide resistance to chronic wasting disease. The study suggests reducing the frequency of a variant associated with the disease and implementing strict management practices to prevent exposure.
A new study found that the detection of resistant variants is only possible using population deep sequencing, suggesting treatment with antibiotics may contribute to their presence. The research highlights the potential for PDS to improve understanding of pathogens like Streptococcus pneumoniae and inform treatment strategies.
A new study suggests that genetic sequencing can detect emerging COVID-19 variants with enough time to contain them at their source. This approach requires coordinated global efforts to prevent the spread of new variants.
A University of California, Berkeley study found that aging and environment are more important than genetic variation in affecting gene expression. As individuals age, their gene expression profiles diverge, making genetics less useful in predicting which genes are ramped up or down.
Researchers have discovered two genes contributing to a paradoxical drug effect in Aspergillus fumigatus, a fungus that causes deadly infections. The findings could lead to the development of new treatments and improve patient outcomes.
A novel COVID-19 vaccine developed by Brazilian scientists combines two SARS-CoV-2 proteins to trigger a cellular immune response. The vaccine, called SpiN, showed promise in animal trials, protecting against three strains of the virus and reducing viral load by up to 50 times.
A study published in Nature has identified 61 additional genetic loci associated with stroke and six genes that are potential targets for drug therapy. The research also found a significant overlap between stroke and dementia, suggesting common biology between the two conditions.
Researchers discovered a new genetic variation in old wheat varieties that enhances yield potential and resistance to yellow rust, potentially replacing current elite varieties. The findings also reveal possible new gene variants for resistance to yellow rust infestation, paving the way for more sustainable farming practices.
Researchers from Aarhus University identified seven genetic variants common to both autism and ADHD, as well as five specific to only one diagnosis. The study suggests a significant overlap in underlying genetic causes and may lead to more precise diagnoses and earlier interventions.
A study led by Dr. Hugo Bellen has identified a new syndromic intellectual disability caused by a spontaneous mutation in the MTSS2 gene. The research used fruit fly models to investigate the genetic alteration, which resulted in a functionally-altered MTSS2 protein leading to symptoms similar to those seen in patients with the condition.
This study reveals genetic insights into artificial selection and ecological adaptation in silkworms, identifying 468 domestication-associated genes and 198 improvement-associated genes. The pangenome dataset also sheds light on the origins of domesticated silkworms and their economic traits.