Articles tagged with Genetic Testing
A recent study by Mayo researchers found that about 40% of patients referred for a second opinion on long QT syndrome (LQTS) did not show sufficient evidence to merit the diagnosis. The study highlights the challenge in diagnosing LQTS, which can be lethal if not diagnosed correctly, and emphasizes the need for cautious evaluation by e...
Researchers developed a cell culture test for assessing genetic toxicity that may prove dramatically cheaper than existing animal tests. The assay allows genetic toxicity to be examined far earlier in the drug development process, making it much more efficient.
The AlloMap test has been shown to correlate with oxygen saturation levels, cardiac filling pressures, and the electrical properties of the transplanted heart. Non-invasive blood tests can also detect cytomegalovirus-induced immune responses in lung transplant patients.
A systematic review found that screening all women with newly diagnosed breast cancer using immunohistochemistry and confirming ambiguous results with fluorescence in situ hybridization is the most cost-effective strategy. Gene patenting can lead to restricted access to genetic testing and treatments, increasing healthcare costs.
Researchers investigate interest in genetic testing among healthy young adults and its impact on healthcare decisions. Participants receive free multiplex genetic testing, which detects variants of genes linked to various diseases.
Researchers have developed a genetic test that can predict which hepatitis C patients are at high risk of developing cirrhosis. The test uses a 'Cirrhosis Risk Score' based on seven genes and has been validated in independent studies, offering hope for more targeted treatment.
Researchers at Baylor College of Medicine found that chromosomal microarray analysis is remarkably sensitive in detecting abnormalities in individual chromosomes, identifying the source of problems in many cases. The technique improved detection rates by up to 12% compared to traditional methods.
A gene expression profiling test has been shown to correlate with oxygen saturation levels, pressure in the heart before pumping, and electrical properties of the transplanted heart. This test may provide a valuable tool to tailor therapies to meet the specific needs of each heart transplant patient.
Researchers at the University of Iowa have developed genetic tests that may help identify individuals at risk of substance abuse and behavioral disorders. The study found differences in gene expression between people with a history of smoking and those without, suggesting potential blood tests for identifying risk factors.
Researchers at the University of Iowa have discovered a link between genetic information in white blood cells and mental health conditions like panic disorder. The study found distinct patterns of gene expression in individuals with and without panic disorder, which could lead to new diagnostic tools and therapies.
Researchers have developed a new genomic microarray test that accurately identifies the ER and HER-2 status of breast tumors, which can inform personalized treatment planning. The test showed 90% accuracy for both receptors, comparable to existing pathology tests.
The study assessed molecular testing's utility in caring for patients with genetic retinal diseases. Molecular testing confirmed a clinical diagnosis of hereditary disorders in 133 out of 266 diagnostic tests, while also identifying carrier status and ruling out familial mutations in asymptomatic individuals.
Research reveals genetic variation in the DARPP-32 gene linked to improved cognitive performance and increased risk of schizophrenia. The study's findings suggest a possible genetic connection between the protein and frontostriatal brain structure and function.
As pharmacogenomics adoption advances, physicians are at risk of lawsuits for not recommending genetic tests before prescribing drugs that may harm patients with genetic vulnerabilities. Experts predict an increase in liability risks, citing scientific uncertainty, social concerns, and economic costs as hurdles.
A new study by researchers at the University of Bristol found that genetic vulnerability, not organophosphate exposure, may be a factor in Gulf War veterans' and farmers' depression. The study suggests that everyday toxins and activities, rather than specific chemical hazards, are likely to contribute to depressive symptoms.
Research casts doubt on organophosphate poisoning as cause of Gulf War Syndrome depression, suggesting genetic factors are more likely to cause symptoms. Studies show that individuals with specific gene variants, such as the PON1 Q192R gene, are more prone to depression.
Scientists discover that the structure of the bases, rather than the backbone, is critical in developing genetic material. They created molecules with alternative bases and found that only one pair was strong enough to form specific base pairs.
Scientists have developed an inexpensive gene chip test that can detect H5N1 infections with high accuracy, providing a significant advantage over existing tests. The MChip has the potential to revolutionize laboratory testing for influenza, enabling rapid and accurate identification of flu viruses, including avian influenza H5N1.
Research suggests women testing negative for BRCA1 and BRCA2 genes are still at higher risk of breast and ovarian cancer. Regular screening from age 35/40 is recommended due to genetic modifier genes, increasing their risk by three times that of the general population.
Researchers at UC Davis have successfully engineered fruit flies to respond to the scent of silkworm moths, a breakthrough that could lead to designing better chemicals to attract insects. The findings have important implications for agricultural pest control and medical entomology, with potential applications in suppressing insect com...
Researchers have discovered a new gene, HTRA1, that significantly increases the risk of developing Age Related Macular Degeneration. This discovery may lead to new treatments and preventive strategies for patients with AMD.
Researchers at Johns Hopkins Medicine have identified four mutations in the Desmoglein-2 gene as a significant contributor to arrhythmogenic right ventricular dysplasia (ARVD), a condition that causes sudden cardiac death in young athletes. The findings should increase the accuracy of tests to identify those at risk for ARVD.
Researchers found that both amniocentesis and chorionic villus sampling (CVS) carry a low risk of miscarriage. While CVS was initially believed to have a higher rate of miscarriage, the study revealed that this risk decreased over time.
Researchers report first case of total suppression of male killing in a butterfly, revealing genetic conflict between elements promoting life and death. Breeding experiments show that counteracting elements can spread quickly through the population, potentially leading to widespread disappearance of male-killing bacteria.
A new computer model combines ocean current simulations and genetic forecasting to predict coral reef ecology and animal dispersion patterns. The model was tested with empirical data from threatened staghorn corals, showing successful predictions of genetic patterns on a regional scale.
A team of researchers developed a new method to specifically recognize anthrax spores using monoclonal antibodies that target a unique sugar component called anthrose. This breakthrough offers a promising solution for rapid and accurate diagnosis, potentially reducing the risk of death from anthrax if treatment is delayed.
Researchers confirm four new cases of Rett syndrome in boys with no family history, highlighting need for prenatal diagnosis and pediatrician awareness. The condition affects mostly females due to the presence of a single X chromosome, but its incidence may be higher than initially thought.
A unique medical research study has begun evaluating 1,001 individuals at risk of developing Huntington's disease who do not know whether they carry the genetic defect. The PHAROS study aims to identify early signs of the disease and inform clinicians in designing better studies for new drugs.
Researchers at the University of Kentucky have developed a blood test to detect lung cancer in early stages, showing 90% accuracy in predicting non-small-cell lung cancer. The test identifies the body's immune response to tumors and could become the first blood test to predict cancer since the PSA test was introduced.
Researchers developed a genetic test for CMT2, a leading cause of the condition, which is characterized by muscle weakness and nerve damage. The new test offers hope for early diagnosis and potential treatment of CMT2, a complex disorder with no effective therapies yet.
A new study uses high-resolution genomic microarrays to detect small rearrangements in chromosomes that cause rare birth defects. The technology allows for rapid and precise diagnosis, providing a target for future therapies.
A new screening method using cells in lung mucus can predict tumor development up to 18 months in advance. The test identified 65% of individuals who later developed symptoms of lung cancer, but also misidentified 35% of cancer-free participants.
A large European study found that a top candidate gene variant does not significantly increase the risk of osteoporosis, contrary to previous research. The study, which involved over 20,000 participants, suggests that genetic testing for this variant alone is not sufficient to accurately predict fracture risk.
The Genetics & Public Policy Center urges the government to issue proposed regulations for a genetic testing specialty, citing concerns over the lack of oversight in the industry. The center argues that a genetic testing specialty is achievable with key quality requirements such as analytic and clinical validity.
A new test developed by a McMaster virologist can identify infected individuals early in an outbreak, limiting the spread of virus in the community. The test will be available for evaluation by hospital-based laboratories and reference laboratories by early December.
A novel 'Flu Chip' developed at the University of Colorado at Boulder can determine the genetic make-up of influenza strains within 11 hours, significantly faster than current methods. The technology has shown over 90% accuracy in identifying flu subtypes and could aid global surveillance and vaccine development.
Researchers analyzed genetic data and outbreak patterns to find that the Zaire strain of Ebola virus is spreading as a wave from its first epidemic in Yambuku, Gabon. This suggests that the virus may reach populated areas within 1-2 years and devastated gorilla populations in 3-6 years.
A study characterized the clinical predictors of BRCA1 and BRCA2 mutations among high-risk individuals of European and African ancestry. Researchers found that early age at diagnosis and family history were associated with an increased likelihood of carrying a deleterious mutation.
A novel genetic testing tool has been developed to screen for multiple retinal disease genes on a single microchip, offering faster and more accurate diagnoses for conditions like RP. The arRP-I chip is 23% less expensive than current sequencing methods and can detect both known and novel mutations.
The NewMood project aims to identify genetic traits that contribute to depression by analyzing brain responses to fearful faces and rewards. Volunteers will participate in a online test and provide a mouth swab for genetic analysis.
Researchers found paternal discrepancy rates range from less than 1% to as much as 30%, with genetic testing potentially boosting these rates. Around one in 25 families could be affected, highlighting the need for support services and guidance on disclosure.
A new study suggests that men over 50 with unexplained ataxia or tremors should undergo testing to check if they have the FMR1 gene, which causes Fragile X-related disorder. The guidelines were developed after a multi-center study found 56 people had received prior diagnoses of other conditions before being correctly diagnosed with FXTAS.
The Genetics and Public Policy Center at Johns Hopkins University will launch a new genetic-testing initiative to build consensus on the safe and accurate use of genetic testing. The two-year $3 million grant aims to improve our understanding of genetic tests and their impact on public health.
A new genetic test detects malignant hyperthermia susceptibility in 25-50% of cases, improving patient safety during general anesthesia. The test requires only a blood sample and can substitute other anesthesia drugs to prevent the rare but life-threatening condition.
A study on genetic testing in families found that individuals with a family history of disease tend to form cliques with those who test positive for a mutation. The timing of disclosure is influenced by the type of disease and perceived need to prepare, highlighting the complexities of sharing genetic information within families.
The revised Bethesda guidelines effectively identify patients at risk for hereditary nonpolyposis colorectal cancer (HNPCC), also known as Lynch syndrome. A study of 1,222 patients found that these guidelines are the most effective way to detect MSH2 or MLH1 gene carriers.
Women with a family history of breast or ovarian cancer are more likely to receive genetic counseling if they're white. African American women are less aware of genetic testing technology and underestimate their cancer risk. The study found a significant racial disparity in the use of BRCA1/2 testing, which is not explained by socioeco...
The 21st-century model of healthcare focuses on the family before and after genetic testing, clustering genomic disorders based on similar patterns of psychosocial demands. This approach incorporates key disease variables to inform effective treatment interventions.
The new test can identify babies born with Severe Combined Immunodeficiency (SCID), a life-threatening illness, early on, allowing for effective treatment. The test uses dried blood samples from newborns, providing the first accurate and high-throughput screen for immune deficiencies.
A panel discussion at the American Association for the Advancement of Science annual meeting explores issues of public confidence in genetic technologies. Stanford University School of Medicine associate professor Barbara Koenig addresses concerns about regulating new genetic technologies and ensuring their effectiveness.
The MammaPrint test uses gene expression profiling to assess recurrence risk in breast cancer patients, providing valuable assistance for oncologists. Approximately 70% of breast cancer patients are stage I and II, with nearly 50% under age 60.
Researchers at Johns Hopkins Medicine have developed a genetic test that accurately distinguishes between ischemic and nonischemic heart failure. The test uses gene expression profiling to identify 90 genes that differentiate the two forms of the disease, improving accuracy and potentially leading to better treatment outcomes.
A study published in Clinical Genetics found that genetic testing for a rare cancer syndrome saved $16,900 per year for 54 family members. The test also identified two asymptomatic family members who underwent prophylactic surgery to significantly decrease their risk of cancer.
A survey of over 700 adults found that 50% of men and only 32% of women supported routine paternity testing. The difference in response remained consistent despite marital and income status. Researchers speculate that women may seek a father's genetic heritage or parental investment, but this practice is rare due to the potential risks.
A new gene test can predict a child's risk of having an isolated cleft lip and palate, allowing parents to make informed decisions about future pregnancies. The test, based on distinct mutations in the IRF6 gene, has been shown to be effective in predicting the birth defect with approximately 12% accuracy.
Two studies found that interactive computer programs improve women's knowledge of breast cancer and genetic testing, while also reducing anxiety and increasing satisfaction. The programs can supplement standard genetic counseling for those at high risk and stand alone for those at low risk.
A new computer program was found to be more effective in increasing knowledge about breast cancer risk and genetic testing among low-risk women, reducing their perceived risk of getting breast cancer. However, one-on-one genetic counseling was superior in helping women better understand their risk and reduce anxiety.
Researchers are developing new tests to identify illegal substances and methods used by athletes. Genetic engineering approaches also raise concerns as genes can be used to enhance performance via gene transfer methods.
A study found that mouse mammary tumor virus (MMTV) is linked to aggressive breast cancers, particularly in North African countries. The virus was found in 74% of Tunisian samples but only 36% in US samples, suggesting geographic differences in prevalence.
Researchers have developed a method to detect all cystic fibrosis mutations with 100% accuracy using microarray technology. The technology could be used to diagnose genetic diseases during preimplantation genetic diagnosis, providing rapid and reliable results.