In the Literature
Genetic Ability, Wealth, and Financial Decision-Making
Daniel Barth et al.
Recent advances in behavioral genetics have enabled the discovery of genetic
variants linked to a variety of economic outcomes, including education. This study demonstrates that the same genetic variants that predict educational attainment independently predict household wealth in the Health and Retirement Study (HRS). Their findings suggest that genetic factors that promote human capital accumulation contribute to wealth disparities not only through education and higher earnings, but also through their impact on the ability to process information and make good financial decisions.
Set in Stone or Ray of Hope: Parents' Beliefs About Cause and Prognosis After Genomic Testing of Children Diagnosed with ASD
Marian Reiff et al.
Limited information exists about how results from chromosomal microarray analysis (CMA) for autism spectrum disorders (ASD) influence parents’ beliefs about etiology and prognosis. Through interviews with parents and children who received CMA results, the authors found that parents tended to incorporate their child’s CMA results within their existing beliefs about the etiology of ASD, regardless of CMA result. However, parents’ expectations for the future tended to differ depending on results.
Christine Grady et al.
This multipart review provides an overview of innovative approaches to improving and expanding the informed consent process for researchers and participants, along with short essays covering specific areas of innovation
Meta-assessment of Bias in Science
Daniele Fanelli et al.
To analyze biases and reproducibility issues in research, this study probed for multiple bias-related patterns in a large random sample of meta-analyses taken from all disciplines. While small, early, highly cited studies were likely to overestimate effects, very little evidence of biases exists overall.
Opposition Grows to ‘Workplace Wellness’ Bill That Would Scale Back Genetic Privacy
A bill currently going through Congress would eliminate the Genetic Information Nondiscrimination Act’s genetic privacy protections from workplace wellness programs, potentially allowing employers to require that employees undergo genetic testing and disclose their results.
This Company Wants to Analyze Your Saliva — To Try to Predict When You’ll Die
GWG Life, a company that buys life insurance policies from people who don’t want or can’t afford them anymore, has started requiring its clients to submit a saliva sample. The company analyzes patterns of DNA methylation with hopes of better predicting their clients’ life spans, despite doubts regarding the predictive value of DNA methylation signatures.
Evolving Policy with Science
R. Alta Charo and Richard O. Hynes
The co-chairs of the National Academy of Science’s Human Genome Editing Committee comment on United States policy governing heritable human germline modification, and discuss their committee’s report on human gene editing. The authors note that, under strict regulations, clinical trials for heritable editing may eventually be permissible for parents hoping to prevent serious diseases in their children.
Adding Protective Genetic Variants to Clinical Reporting of Genomic Screening Results
Marci L.B. Schwartz et al.
As the availability of sequence data from healthy individuals increases, the authors consider the clinical use, required levels of evidence and medical relevance of “protective” variants in human disease. To maximize the utility of protective variants, the authors argue that concerted efforts are needed to develop standards for the classification and reporting of such variants for precision medicine.
HudsonAlpha's 'Elective Genome' for Healthy Individuals Adds to Emerging Field
The HudsonAlpha Institute for Biotechnology has launched an 'elective genome' test for healthy individuals, called Insight Genome, that also allows participants to enroll in a clinical research study of genetic risks for common diseases. Insight Genome is self-paid, costs approximately $7,000, and has a turnaround time of about 90 days. The cost includes a clinical whole-genome sequencing test, a separate pharmacogenetic test, and pre- as well as post-test visits with physicians and genetic counselors.
Korean Startup 3billion Focuses on Rare Disease Community With DTC Exome Screening Test
Korean startup 3billion is getting ready to offer a direct-to-consumer (DTC) genomic rare disease screening test to patients in the United States. While strict regulations on DTC in Korea forbid the company from offering its service at home, less rigorous regulations allow 3billion to focus on the US market.
Out Now: Behavioral Genetics: 7th Edition
Behavioral Genetics, 7th edition introduces students to the field’s underlying principles, defining experiments, ongoing controversies, and most recent discoveries. The text outlines heredity, it’s DNA basis, the methods used to discover genetic influence on behavior and identify specific genes, what is known about genetic influence on cognitive ability, psychopathology, substance abuse, personality, health psychology, and aging, and future steps in the field.
The Alu Neurodegeneration Hypothesis: A Primate-specific Mechanism for Neuronal Transcription Noise, Mitochondrial Dysfunction, and Manifestation of Neurodegenerative Disease
Peter A. Larsen et al.
This study provides evidence of enriched Alu retrotransposons in mitochondrial genes, and postulates that Alus can disrupt mitochondrial populations in neurons, thereby setting the stage for progressive neurologic dysfunction. This Alu neurodegeneration hypothesis is compatible with past research and offers a plausible mechanism for the disruption of neuronal mitochondrial homeostasis, ultimately cascading into neurodegenerative diseases such as Alzheimer’s disease.
Whole Genome Sequencing Resource Identifies 18 New Candidate Genes for Autism Spectrum Disorder
Ryan K.C. Yuen et al.
The authors of this study performed whole-genome sequencing of families with autism spectrum disorder (ASD) to build a resource for subcategorizing the phenotypes and underlying genetic factors involved. The paper provides access to an online database of 5,205 sequences from families with ASD and their clinical information, and identifies 18 new candidate ASD-risk genes.
In The Media
Autism Genes Conserved During Human Evolution to Make Us Smarter, Say Scientists
John von Radowitz
Researchers from Yale School of Medicine have identified strong positive evolutionary forces acting on variants that are associated with both autism spectrum disorder and intellectual achievement, possibly indicating why many genetic variants contributing to the disorder persist throughout society.
Psychiatric Disorder Sequencing Project Adds 10x Genomics Tech for Phasing, Structural Variant ID
The InPSYght project is about halfway towards its goal of sequencing 10,000 whole genomes in order to study schizophrenia and bipolar disorder, as well as to increase the amount of genomic data available from individuals of African ancestry.
Understanding the Roots of Human Musicality
Researchers from MIT and Brandeis University are using multiple methods to study the origins of humans’ capacity to perceive and produce music. Their results contribute to an enduring debate of the biological and cultural influences on humans’ musicality.
African Ancestry-Specific Variant Linked to Increased BMI, Obesity
GenomeWeb Staff Reporter
In a new study, a National Human Genome Research Institute-led team conducted a genome-wide association study for body-mass index on some 1,570 people from West Africa and found a novel variant within the SEMA4D gene, which has a role in immune response and other processes. They also found that higher serum levels of the protein SEMA4D were linked to increased obesity risk.
In the Literature, cont.
Autism Gene Ube3a and Seizures Impair Sociability by Repressing VTA Cbln1
Vaishnav Krishnan et al.
Maternally inherited 15q11-13 chromosomal triplications cause a frequent and highly penetrant type of autism. This in vivo mouse genetics study suggests that gene and seizure interactions in ventral tegmental area (VTA) glutamatergic neurons impair sociability by downregulating the synapse organizer Cbln1, a key node in the expanding protein interaction network of autism genes.
Depression and Genetic Causal Attribution of Epilepsy in Multiplex Epilepsy Families
Shawn T. Sorge et al.
Little is known about how epilepsy patients and their relatives will respond to genetic attributions of epilepsy, despite increased emphasis on genetic components of the disease. Through a survey of multiplex epilepsy families, the authors found that depression is associated with perceived likelihood of carrying an epilepsy-related mutation, specifically among individuals without epilepsy in families containing multiple affected individuals. This association should be considered when addressing mental health issues in such families.
Traumatic Brain Injury Induces Genome-Wide Transcriptomic, Methylomic, and Network Perturbations in Brain and Blood Predicting Neurological Disorders
Qingying Meng et al.
This study utilized modern systems biology in a rodent model of concussive injury to understand the impact of traumatic brain injury (TBI) on fundamental aspects of gene regulation, which have the potential to drive or alter the course of the TBI pathology. The study found that concussive brain injury reprograms genes which could lead to predispositions to neurological and psychiatric disorders, and that genomic information from peripheral leukocytes has the potential to predict TBI pathogenesis in the brain.
Diagnostic Yield and Novel Candidate Genes by Exome Sequencing in 152 Consanguineous Families With Neurodevelopmental Disorders
Miriam S. Reuter et al.
The study aimed to promote the identification of neurodevelopmental disease genes and provide an overview of the diagnostic yield of exome sequencing in consanguineous families. Because of the possibility of identifying treatable diseases or the coexistence of several disease-causing variants, the authors recommend using exome sequencing as a first-line diagnostic approach in consanguineous families with neurodevelopmental disorders. The study also identified 52 novel candidate genes that are awaiting confirmation in independent families.
Understanding Psychiatric Disorders in People With 22q11.2 Deletion and Duplication
James C. Harris
Microdeletions and microduplications on chromosome 22 at the 22q11.2 locus are associated with increased risk of developing a wide range of cognitive and psychiatric disorders. The most frequent microdeletion syndrome in the general population is the hemizygous microdeletion 22q11.2 deletion syndrome, while a smaller percentage of affected individuals have shorter contiguous gene deletions in the same region. Several genes linked to psychiatric disorder are in the deletion region.
Factors Related to Genetic Testing in Adults At Risk for Huntington Disease: The Prospective Huntington At-Risk Observational Study (PHAROS)
Kimberly A. Quaid et al.
The PHAROS study is a unique observational study of 1001 individuals at risk for Huntington disease (HD) who had not been previously tested for HD and had no plans to do so. Within the cohort, baseline behavioral scores, especially apathy, were more strongly associated with later genetic testing than motor and chorea scores. Following genetic testing, subject’s experiences of depression varied based on the number of cytosine–adenine–guanine repeats in the Huntingtin gene.
Further Evidence for Genetic Variation at the Serotonin Transporter Gene SLC6A4 Contributing Toward Anxiety.
Andreas J. Forstner et al.
Social anxiety disorder (SAD) is a common and heritable psychiatric disorder, for which only a few candidate genes have been implicated so far. The study investigated single-nucleotide polymorphisms (SNPs) associated with other psychiatric disorders, finding evidence for an involvement of the serotonin transporter gene SLC6A4 in the etiology of anxiety-related traits. Variation at the genome-wide associated bipolar disorder locus ANK3 might also influence anxiety-related personality traits.