Articles tagged with Genetic Analysis
New tools, MEGENA and SuperExactTest, help genomics researchers study hierarchical organization patterns in complex networks and compare large sets of data. These tools were published in PLoS Computational Biology and Scientific Reports.
The researchers have developed a new model that allows atomic-level simulations of DNA dynamics, achieving extraordinary accuracy in just 5 years of work. The data is stored in a public website with over 4 Terabytes of information.
A Chinese family with GJB2-associated hearing loss underwent an integrated reproductive strategy combining preimplantation genetic diagnosis and noninvasive prenatal testing. The approach resulted in a healthy baby, demonstrating its potential to prevent hereditary hearing loss globally.
A new study suggests using contingent screening could detect higher proportions of affected pregnancies, but parental choices limit its impact. Only 60% of women considered high-risk after standard first-trimester screening choose cfDNA testing, resulting in a limited effect on live births with trisomy 21.
A new paper device developed by scientists can rapidly and inexpensively diagnose hepatitis B and assess male fertility, making it a valuable tool for diagnosing people in low-income areas. The test, which costs less than $1 per device, can detect the hepatitis B virus in blood serum and determine sperm DNA integrity with high accuracy.
A recent study suggests that offering pregnant women a DNA test for Down's syndrome on the NHS could reduce the number of invasive tests and potentially save lives. The 'cell-free' DNA test has been found to be highly reliable and can be easily incorporated into routine clinical care within the NHS.
Researchers identified three genetic factors associated with peripheral artery disease, including variations on chromosome 13 that affect protein expression and blood vessel constriction. The study provides insight into the condition's causes and potential therapeutic targets.
A new UCL study has highlighted genes involved in schizophrenia and obesity, which could aid in developing improved prevention and treatment strategies. Variants in CRHR1 and SNORD115 were found to be more common in obese subjects, suggesting that disruptions in these genes may increase the risk of obesity.
A new series of assays explores how African smallholders can meet SDG2 by using biosciences to protect crops from diseases and pests, increase yields, and promote food security. The results provide recommendations for policymakers, educationalists, and those interested in smallholder agriculture.
A study of Inuit DNA reveals how their unique genetic makeup helps them thrive on a high-fat diet, with genes associated with fat metabolism, height and weight, and cholesterol playing key roles. The research suggests that the Inuit population has undergone significant adaptation to its extreme climate environment.
VIB and UGent scientists developed a new method to predict plant size by analyzing RNA molecules. This approach allows breeders to select disease-resistant plants earlier and accelerate breeding programs. The study's findings have the potential to improve agricultural productivity and address global food security challenges.
A recent study published in Nature Communications reveals that protein lamin A plays a crucial role in maintaining genomic structural stability by forming 'cross-links' that limit genetic material's freedom of movement within the nucleus. This creates a stable and linked polymeric structure promoting chromosomal integrity.
A team of researchers from Kobe University has developed a novel method to quantify the proportion of native and non-native genotypes in aquatic species. By analyzing environmental DNA (eDNA) from water samples, they were able to detect the presence of invasive non-native strains in rivers and reservoirs of western Japan.
Researchers discovered rare gene variants associated with a severe form of inflammatory bowel disease (IBD) that affects children under age five. The findings suggest that these genes play important roles in immune function and may be linked to primary immunodeficiency disorders.
The ESC recommends DNA analysis in post mortems of young sudden death victims to identify genetic causes and facilitate early diagnosis of relatives. This approach helps protect them through personalized approaches, such as lifestyle modifications and therapies.
A team of scientists has discovered that gene regulatory networks are inherently unstable, leading to aging and disease. Stabilizing these networks could lead to therapies against age-related diseases and increased lifespan.
Researchers at Chapman University have published two studies revealing widespread mislabeling of meat species in consumer commercial products, including ground meat and game meats. The studies identified significant discrepancies between product labels and actual species, highlighting the need for improved quality control measures.
A recent study published in PLOS Medicine suggests that a mother's genetic makeup plays a significant role in determining her baby's birth weight and length, rather than their own height. The research also found that taller mothers tend to deliver babies at earlier gestational ages.
A recent study published in PLOS ONE suggests that the Cape Parrot should be classified as a distinct species due to its genetically distinct markers. The research analyzed DNA samples from five Poicephalus species and found that the Cape Parrot shares common ancestry with other subspecies only at around 2 million years ago.
A large international study has identified genetic factors that modify the age of onset for Huntington's disease symptoms. The research, supported by the NIH, used precision medicine to analyze over 4,000 patients' DNA and found associations with genes involved in DNA repair and mitochondrial function.
ArroGen Group's Fingerprint Molecular Identification (FMID) technology analyzes chemical residues on fingerprints to reveal a suspect's gender, nicotine status, and exposure to explosives or drugs. This non-invasive process will empower law enforcement investigations with indisputable scientific evidence.
Researchers have identified two gene variants on chromosomes 15 and 8 associated with earlier- or later-than-expected symptom onset in Huntington's disease patients. The findings suggest that these variants may influence the disease process prior to symptoms appear, offering new potential therapeutic strategies.
Researchers found that electrochemical disinfection creates numerous 'disinfection by-products', which can have unknown environmental impacts. Alternative methods like filtration or adsorption are recommended to prevent the transfer of harmful organisms.
The Next Generation Science Standards (NGSS) show a modest improvement over state standards in genetics content, but fall short on key concepts like Mendelian inheritance. The study highlights the importance of interpreting standards consistently to ensure consistent implementation.
A study by UCLA and University of Pittsburgh researchers has isolated specific genetic differences between people with DiGeorge syndrome who have autism and those who have psychosis. The findings suggest a potential way to determine which child is at risk for which disorder, allowing for early intervention and improvement.
Researchers developed a web tool to estimate the impact of genetic modification of mice, which can complicate biomedical research interpretation. The tool aids in explaining controversies and improving translation from lab animals to humans.
The discovery of Tetrapodophis amplectus, a four-legged snake fossil from Brazil's Crato Formation, supports the idea that snakes evolved from burrowing ancestors. The species' unique features, including short snout and flexible jaw, suggest it was adapted for grasping prey or clasp during mating.
A portable 'paper machine' uses DNA analysis and detection to diagnose infectious diseases, genetic conditions, and cancer in resource-limited areas. The device costs less than $2 total and can detect as few as five cells of E. coli using ultraviolet light and a smartphone camera.
A study published in Molecular Psychiatry identified a genetic mutation linked to healthy information processing, shedding light on cognitive aging and age-related diseases. The CADM2 gene was found to be strongly associated with performance on tests of information processing speed.
The Paul G. Allen Family Foundation has awarded $7 million to five research teams to investigate the fundamental causes of Alzheimer's disease. The projects will focus on uncovering the biological roots of the disease, including gene combinations, white matter damage, and pH levels.
Researchers found a strong correlation between the three-dimensional shape of the cerebral cortex and ancestral background. The study used data from over 1,200 children and adolescents to analyze genetic and neuroimaging information.
Researchers at PolyU have developed a novel big data analysis platform that unveils the unregulated patterns of gene network in cancer. The platform discovers potential diagnostic and therapeutic target genes, including Nucleophosmin (NPM1), for Chronic Myelogenous Leukemia (CML).
A gene previously suspected of influencing human obesity has been cleared of its connection, according to a new study. The researchers developed tools to analyze complex genomic regions, including the AMY1 locus, and found no association with body mass index.
The study analyzes 100,000 Californians' health records and genetic data to track down genetic contributions to disease. Researchers have identified genetic variants linked to various diseases, including prostate cancer, allergies, and diabetes.
A new study uses massively parallel gene function assays to characterize nearly 2000 BRCA1 variants, providing a potential solution for sorting out harmful and harmless variants. The approach demonstrates promise but is not yet ready for use in the clinic.
Researchers identified epigenetic alterations in CVID patients by comparing monozygotic twins. They found higher DNA methylation levels and impaired DNA demethylation in immunodeficient B cells, leading to reduced antibody production and altered cell maturation. These findings provide new insights into the diagnosis and treatment of CVID.
Researchers at EMBL-EBI developed a new method and algorithm that enables fast and efficient genetic analysis of large cohorts. The mSet algorithm allows for the simultaneous analysis of many genetic variants and traits, improving statistical power and enabling the study of up to half a million individuals.
A new national study in the Netherlands reveals that non-invasive prenatal testing (NIPT) is accurate and preferred by pregnant women at high risk of having a baby with Down's syndrome. The TRIDENT study found 89 cases of trisomy 21, 11 of trisomy 18, and ten of trisomy 13, with only nine false positives.
Researchers analyzed thousands of women's genomes to determine how genes affect the age of first-time mothers and family size. They found that genes account for about 15% of the differences in these outcomes, suggesting an inherited reproductive advantage.
A new study finds that genetic differences between American eels that feed in freshwater and brackish environments explain their decline. The research identifies 99 genes associated with growth rate, heart development, and smell, highlighting the importance of genetics in determining eel survival.
The GTEx project analyzed over 54,000 genes across 43 body sites from 175 individuals to identify distinct regions in the genome that affect gene expression. This work sheds light on how genetic variation predisposes people to disease and provides a resource for future studies investigating genetic control of gene expression.
A multi-year study by Olga Troyanskaya and her team identified 144 functional gene interaction networks for organs as diverse as the kidney, liver, and whole brain. The technique, NetWAS, combines quantitative genetics with functional genomics to increase the power of GWAS and identify genes underlying complex human diseases.
Scientists have discovered a crucial signaling pathway in diffuse large B-cell lymphoma that can be targeted with substances already in clinical development for other diseases. This finding holds promise for diagnosis, prognosis, and treatment of the disease.
Researchers identified duplicate regions on chromosomes 18 as a cause of false-positive results, with longer chromosomes more prone to errors. The study suggests maternal copy-number variants may contribute substantially to elevated risks, emphasizing the need for follow-up testing.
A new study found that kidneys from deceased African-American donors with two APOL1 gene renal risk variants failed more rapidly after transplantation. The study suggests that rapid genotyping of these donors at the time of organ recovery may improve transplant outcomes.
A genetic analysis of current smokers reveals that those consuming high amounts of tobacco are more likely to weigh less. The study found a 1.2kg lower body weight among double carriers of the CHRNA3 gene variant associated with higher tobacco consumption.
A recent study suggests a link between genes linked with autism and higher intelligence in individuals who do not have the condition. Researchers found that carrying genetic traits associated with autism is, on average, linked to slightly better cognitive test scores, even in those without autism.
Researchers analyzed DNA from three enslaved Africans with highly degraded skeletal remains to uncover their origins. The study's findings demonstrate the potential for genomic data to identify ancient individuals' genetic ancestry, especially in cases where historical records are limited.
A recent study has found that mutations in the APC2 gene cause Sotos-like symptoms, including nervous system-related issues and abnormal brain structure. The research team also discovered that APC2 is a crucial downstream gene of the NSD1 gene, which is responsible for Sotos syndrome.
The GeneSight test combines multiple gene variations to predict patient responses to medications, improving treatment outcomes and healthcare resource utilization. The study found that patients on red category medications showed significantly less improvement in depressive symptoms.
Breeding dogs solely based on DNA tests can increase inbreeding and reduce genetic diversity, experts warn. A combined approach of DNA analysis, health screening, and pedigree information is necessary to minimize inherited diseases and improve the health of pedigree lines.
A large twin study suggests that genetic factors may explain the association between low back pain and depression. The study, published in PAIN, analyzed data from nearly 2,150 Spanish twins and found a significant link between symptoms of depression and low back pain.
Scientists at Karolinska Institutet have created a detailed map of cortical cell types and the genes active within them using single-cell sequencing. They identified 47 different kinds of cells, including hitherto unknown types, which can help shed more light on diseases like multiple sclerosis.
A study has found that certain genetic variants in a baby's DNA may increase the risk of preterm birth. The researchers analyzed the DNA of hundreds of babies and their mothers, finding a link between duplicated or deleted genes in the babies and an increased risk of early birth.
A new software pipeline called Churchill can analyze human genomes in as little as 90 minutes, compared to weeks or years with existing technologies. This breakthrough enables rapid diagnosis of genetic diseases and scalable genomic analysis for population studies.
A large-scale analysis of the gut microbiome has identified significant variations in gene copy numbers across different strains of the same microbe species. These strain-level variations can affect the microbes' capabilities, lifestyle, and impact on human health, including obesity and inflammatory bowel disease.
Researchers identified five genetic variants influencing brain structure size, particularly in regions associated with memory and movement. The study, the largest analysis of brain structure and genetics, aims to understand the causes of variation in human brain development and disease predisposition.
Researchers from the Keck School of Medicine of USC led a global consortium to identify eight common genetic mutations that appear to age the brain an average of three years. The discovery could lead to targeted therapies and interventions for Alzheimer's disease, autism, and other neurological conditions.
A new gene, hexokinase 1 (HK1), has been linked to retinitis pigmentosa, an incurable eye disorder affecting millions worldwide. The discovery brings the total number of genes associated with this disease to over 60 and offers potential targets for drug treatments and gene therapy.
The university's forensic geneticist will use the grant to develop and improve 'DNA intelligence' tools that can predict eye, hair, or skin color from genetic material. This technology will aid investigators in identifying unknown suspects and solving cold cases.