The study shows that open-access BRCA testing to Ashkenazi women enables the identification of carriers who would otherwise have been missed. Carrying one of the mutations for the BRCA genes means that women affected have a 50-80% risk of developing breast cancer and a 20-50% risk for ovarian cancer.
The UK's two-tier system balances individual concerns about genetic discrimination with insurer needs, while Australia and Canada face challenges in regulating insurers' use of genetic information. A comparative study found that the UK's moratorium on predictive genetic test results for life insurance policies below £500,000 helps main...
Research links loss of Y chromosome in blood cells to increased risk of developing Alzheimer's disease in men. A study of over 3,200 men found that those with an existing diagnosis of AD had a higher degree of lost Y chromosome, and LOY was also a marker for the likelihood of developing the disease.
Researchers have identified a new disease gene associated with severe pediatric cardiomyopathies, allowing for improved genetic counselling, predictive testing, and early treatment. The discovery also provides a potential drug development target for treating affected children and family members.
Researchers used genetically-engineered mice to study the role of a Western-style diet in colon cancer development. They found that a low-fiber, high-fat diet increased the risk of colon cancer and identified key changes in gene expression profiles before tumor formation.
Researchers found simultaneous changes in response to obesity in almost all tissues studied, including the digestive system and internal organs. The study highlights the burden of overweight and obesity on these systems and may lead to personalized care.
Researchers identify mutation in ATP4a gene responsible for aggressive form of inherited gastric NET. Restoring normal gastric acid balance with hydrogen chloride solution prevents tumour development in genetically engineered mice.
A study of 7,000 participants from 75 countries found that most people want access to genes linked to serious conditions and want to be 'forewarned' about their future health risk. Participants also expressed interest in having raw genomic data, despite its limited usefulness for predicting health outcomes.
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.
At least 6.5% of de novo genetic mutations now known to arise during post-zygotic development, affecting clinical outcomes and recurrence risk. Better information on mutation origin will enable more informed reproductive choices.
A new genetic mutation in the TGFB3 gene has been discovered, linking it to serious aortic disorders. This finding allows for improved diagnostic screening, enabling early identification of patients at risk and potentially preventing aortic aneurysm formation through preventive treatment.
Researchers from the UCL Institute of Child Health and Great Ormond Street Hospital found non-invasive prenatal testing to be highly effective and acceptable to parents. Over 2,500 women underwent NIPT for high and medium risk pregnancies with Down's syndrome, showing a sharp decrease in invasive tests and increased detection rates.
Researchers found that Non-Invasive Prenatal Testing (NIPT) can detect maternal cancers at an early stage, before symptoms appear. The study identified three different early-stage cancers in three women and showed the potential of NIPT for non-invasive cancer screening.
A study has found that copy number variants (CNVs) are a common event contributing to various conditions, including blindness, deafness, and metabolic disorders. CNV screening can aid in diagnosis, clinical management, and prognosis, providing valuable information for reproductive counselling.
Researchers identified 17 independent genes related to liking for certain foods, including artichokes and white wine, which can be used to personalize nutrition plans and improve health outcomes. This study has the potential to significantly impact diet-related diseases such as obesity, diabetes, and hypertension.
Exome sequencing may miss a high proportion of clinically relevant regions in key disease-causing genes, raising concerns about patient diagnosis. The study's findings highlight the need for improved methods to provide reliable coverage of these genes.
A new study using next-generation DNA sequencing shows that it can accurately screen embryos for genetic disease prior to implantation, improving outcomes in IVF treatments. The technique has been shown to be effective, reliable and cost-efficient, resulting in more ongoing pregnancies.
Researchers have discovered a new target, human plastin 3 (PLS3), that may be critical for the treatment of osteoporosis. Injection of PLS3 or related proteins in zebrafish where it has been suppressed can replace its loss and repair bone development anomalies.
A large-scale genetic study found a significant link between high vitamin D levels and reduced blood pressure, reducing the risk of hypertension. The researchers used genetic variants as proxy markers for vitamin D status to test for causality, providing strong evidence for the potential prevention of cardiovascular disease through vit...
Researchers have found that interferon-beta treatment significantly improves the physical condition of animal models of spinocerebellar ataxia 7, a fatal genetic disorder characterized by coordination problems. The treatment reduces the load of mutant ataxin-7 and leads to increased PML nuclear bodies involved in protein degradation.
A recent study reveals that rare mitochondrial mutations are more prevalent than previously thought, affecting 7.1% of patients with a respiratory chain disorder. Comprehensive analysis of all mitochondrial DNA is crucial for early diagnosis and treatment.
Researchers investigated the role of mitochondria in adrenoleukodystrophy, a disease causing spinal cord degeneration. They found that a diabetes drug, pioglitazone, halted nerve fibre degeneration by preventing mitochondrial loss and oxidative stress.
A new study reveals low uptake of genetic testing for cancer-causing mutations in affected families in France. Despite steady increase in tests for BRCA1/2, MMR mutation testing remains under-used, putting whole families at risk.
The European Society of Human Genetics urges caution on using new genetic sequencing techniques due to potential risks and benefits. The society recommends targeted analysis to limit unsolicited findings, ensuring patients' rights are protected while also providing them with necessary health information.
Scientists have identified genetic heart conditions as a possible cause of unexplained stillbirths, with up to 8% of cases attributed to cardiac channelopathies. The research, led by Ms Alice Ghidoni, used molecular screening to detect disease-causing variants in stillborn fetuses.
Researchers successfully used exome sequencing to diagnose genetic diseases in patients with intellectual disability, blindness, deafness, movement disorders, cancer, and OXPHOS diseases. The technique was able to identify causative mutations in up to 20% of cases, offering a more efficient alternative to traditional Sanger sequencing.
Researchers used genome-wide array analysis to find that parents of affected children often have previously undetected genetic abnormalities. These abnormalities can increase the risk of having another affected child, and understanding them can help provide better genetic counseling.
A study by European Society of Human Genetics researchers identifies a crucial factor, CD36 fatty acid transporter protein, in suppressing response to VPA treatment. Monitoring blood for CD36 levels can help doctors determine response to treatment before starting therapy.
Researchers found a 95% chance of an unaffected child when mutant mtDNA levels are below 18%, enabling PGD as a viable option. This discovery gives genetic counselling and the chance to have a healthy baby to women at risk, affecting 146,000 European families.
A recent study by Rachel Kalf found that DTC genetic tests have moderate predictive ability but often assign increased risk to individuals without substantially higher disease rates. The researchers concluded that these tests are inaccurate and do not provide significant benefits to individuals.
Researchers have made significant breakthroughs in detecting diabetes and cardiovascular disease through advanced lipid genetics. Dr. Joanne Curran discovered that dihydroceramide (dhCer) is a reliable early indicator of diabetes risk, while Dr. Sara Willems found a link between genetic variants and atherosclerosis.
A study of 15,162 children born after assisted reproduction found a major congenital malformation rate of 4.24%, exceeding previous estimates. The majority of malformations were heart diseases and uro-genital system disorders, with a five times higher rate of angioma in girls.
Researchers generally agree that genetic variation findings should be shared with participants if clinically significant, but confidence levels vary across disciplines and conditions. The study highlights the complexity of this issue, suggesting that factors beyond scientific robustness influence researchers' decisions on disclosure.
A small genetic change in the IL28B gene can predict how well individuals with hepatitis C will respond to treatment. Those carrying this protective allele are more likely to clear the virus and respond to therapy.
A new test of sense of smell may help diagnose and treat early-stage Parkinson's disease. The research used transgenic mice with high levels of human alpha-synuclein, a protein linked to PD, to develop a model for studying the disease's effects on dopamine regulation.
A new gene has been discovered that explains variability in symptoms of Usher syndrome, a condition affecting hearing and vision. The discovery could lead to more precise genetic diagnosis and improved treatment options for patients.
Researchers analyze genomes of two individuals with mixed ancestry to study the genetic basis of complex diseases. The study provides a clearer picture of the ancestry of genome sequences for individuals studied, revealing the approximate number of generations at which genetic mixing occurred and estimating the rate of admixture.
A study revealed that inherited heart disease was present in over 30% of families of sudden unexplained death (SUD) victims. The research found that cardiological and genetic examination of surviving first-degree relatives can reveal an inherited heart disease, allowing for treatment and prevention.
Researchers have identified a genetic link between periodontitis and coronary heart disease (CHD), with a shared genetic variant located on chromosome 9. The study found that the genetic variation associated with both diseases is identical, indicating a strong genetic basis for the connection.
A genome-wide association study identified 20 single nucleotide polymorphisms related to an earlier menopause, which could affect fertility in women. The study suggests that understanding these genetic variants may help improve fertility treatment for women with infertility issues.
Research finds that humans with diverse major histocompatibility complexes (MHCs) are more likely to choose mates with dissimilar MHCs, increasing genetic variability and immune system efficiency. This evolutionary strategy may help ensure healthy offspring and avoid endogamy.
Researchers discovered a new family of genetic mutations involved in inflammatory intestinal diseases, including coeliac disease and Crohn's disease. The study found common origins for the two diseases and identified eight new areas with genes controlling immune responses.
Researchers have found that aminoglycosides and a new compound NB30 can suppress nonsense mutations in Usher syndrome, potentially delaying vision loss. The study aims to develop therapy to delay the progression of USH1-related disease.
Current prenatal biochemical screening tests only detect half of chromosomal abnormalities, including trisomies and deletions. This limitation emphasizes the importance of counseling patients on the limitations of these tests to make informed decisions about invasive diagnostic testing.
A genetic mutation in the VLDLR gene is implicated in quadrupedal locomotion in four families affected by Unertan syndrome. Despite shared DNA regions across chromosomes, distinct genes are responsible for the condition in each family.
Scientists have identified a genetic mutation responsible for impaired fetal movement, which can lead to multiple miscarriages and birth defects. The mutation affects the acetylcholine receptor pathway, disrupting normal muscle function and fetal development.
Researchers discovered previously unknown exons outside annotated genes in human proteins, suggesting complex gene regulation and increasing the risk of disease-causing mutations. This finding has significant implications for medicine, requiring extra caution when studying genetic phenotypes.
Researchers found that embryos initially deemed abnormal can undergo chromosomal modifications, leading to a higher rate of mosaicism. This challenges the effectiveness of preimplantation genetic screening (PGS) for increasing pregnancy potential.
In Denmark, non-invasive screening of pregnant women using ultrasound and blood analysis has reduced the number of children born with Down Syndrome by 50%. The new guidelines have also led to a significant decrease in invasive pre-natal diagnostic procedures, from 11% to around 6% of pregnancies.
A recent study of 583 children born after preimplantation genetic diagnosis (PGD) found no significant increase in major malformations compared to those born after conventional IVF. The average birthweight and length of pregnancies were comparable to those born after IVF, providing reassurance about the safety of PGD.