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In somatic cells the mechanisms maintaining the chromosome ends are normally inactivated; however, cancer cells can re-activate these pathways to support continuous growth. Here, the authors characterize the telomeric landscapes across tumour types and identify genomic alterations associated with different telomere maintenance mechanisms.

A multiancestry phenome-wide analysis of copy number variants in the UK Biobank genomes increases power to detect genetic associations with complex traits across human populations.

The goals, resources and design of the NHLBI Trans-Omics for Precision Medicine (TOPMed) programme are described, and analyses of rare variants detected in the first 53,831 samples provide insights into mutational processes and recent human evolutionary history.

A rare variant burden analytical framework for Mendelian diseases was developed and applied to data from the 100,000 Genomes Project, identifying 69 probable new disease–gene associations.

The authors show that plasma AT(N) biomarkers can distinguish Alzheimer’s disease and frontotemporal lobar degeneration in diverse Latin American populations. Using machine learning and integrating neuroimaging, significant diagnostic accuracy was achieved, enhancing clinical assessments of these conditions in Latin America.

An approach to estimate the contribution of all alleles to phenotypic variation is applied to transcription regulation using whole-genome sequencing and transcriptome data. Ultrarare variants contribute approximately 46% of cis heritability across genes.

Elyaman and colleagues performed comparative single-cell transcriptomic and TCR repertoire analyses on T cells obtained from human cadaver brain and leptomeningeal tissues from individuals diagnosed with neurodegenerative disease.

NIPBL perturbation activates long terminal repeat (LTR)-derived alternative promoters due to reorganization of chromatin’s hierarchical structure, leading to LTR co-option and oncogene activation in melanoma cell lines.

A soft robotic probe enables continuous in utero monitoring of fetal physiological parameters, including heart rate, blood oxygen saturation, temperature and electrocardiogram data, during open or fetoscopic surgery to provide real-time information on fetal condition and distress.

This Resource paper presents a global SARS-CoV-2 phylogenetic tree of 4,471,579 high-quality genomes consistently constructed by Viridian, an efficient amplicon-aware assembler.

This study presents the genomes of 2,101 emm28 Streptococcus pyogenes invasive strains, of which 492 were transcriptionally profiled, and 50 were assessed for virulence. GWAS, eQTL analysis, and study of isogenic mutant strains identified an intergenic region that alters global transcript profiles and bacterial virulence.

White-tailed deer are an important reservoir of SARS-CoV-2 in the USA and continued monitoring of the virus in deer populations is needed. In this genomic epidemiology study from Ohio, the authors show that the virus has been introduced multiple times to deer from humans, and that it has evolved faster in deer.

Anterior Uveitis is a common inflammatory eye disease that can result in vision loss. Here, the authors perform GWAS and whole-exome analyses of Anterior Uveitis to identify the underlying genetics of HLA-B*27 positive and negative forms of the disease.

An analysis of 24,202 critical cases of COVID-19 identifies potentially druggable targets in inflammatory signalling (JAK1), monocyte–macrophage activation and endothelial permeability (PDE4A), immunometabolism (SLC2A5 and AK5), and host factors required for viral entry and replication (TMPRSS2 and RAB2A).

By performing a global RNA-RNA interactome analysis in hypervirulent Klebsiella pneumoniae, the authors identify the small RNA ArcZ targets many capsule genes and a key virulence factor MlaA, inhibiting Klebsiella infection and pathogenesis in mice.

The authors analyze rare coding variants in 1990 individuals with congenital kidney anomalies, finding diagnostic variants in 14.1% of cases. They identify two new causal genes, ARID3A and NR6A1, along with 38 candidate genes, providing evidence for shared genetics with other developmental disorders.

The authors analyze 162 primary mismatch-repair-deficient gliomas and identify three subgroups underpinned by distinct somatic mutations in replicative DNA polymerases and IDH1.

Whole-genome sequencing and phenotype data sharing are introduced in a national health system to streamline diagnosis and to discover coding and non-coding variants that cause rare diseases.

Multi-omics datasets pose major challenges to data interpretation and hypothesis generation owing to their high-dimensional molecular profiles. Here, the authors develop ActivePathways method, which uses data fusion techniques for integrative pathway analysis of multi-omics data and candidate gene discovery.

Exome sequencing data from 60,706 people of diverse geographic ancestry is presented, providing insight into genetic variation across populations, and illuminating the relationship between DNA variants and human disease.

New Zealand implemented stringent COVID-19 control measures early after identification of its first case. Here, the authors perform whole genome sequencing of samples taken until 22 May 2020 and find high viral diversity indicative of multiple separate introductions and limited community transmission.

Antimicrobial resistance genes that have been mobilized between bacterial species represent a subset of the naturally occurring resistome. Here, the authors compare the abundance, diversity and geographical patterns of acquired resistance genes with latent resistance genes in global sewage metagenomes.

An initial draft of the human pangenome is presented and made publicly available by the Human Pangenome Reference Consortium; the draft contains 94 de novo haplotype assemblies from 47 ancestrally diverse individuals.

Understanding the mechanisms underlying the survival of drug tolerant persister cells following chemotherapy remains elusive. Here, multi-omics analysis and experimental approaches show that the germ-cell-specific H3K4 methyltransferase PRDM9 promotes metabolic rewiring in glioblastoma stem cells.

Polygenic scores for body mass index and obesity constructed using data from 5 million people with different ancestries were associated with distinct weight gain trajectories from early childhood to adulthood.

Genomic analyses in individuals with index and familial intracranial aneurysms and experiments in vertebrate models identify pathogenic variants in the PPIL4 gene implicated in cerebral angiogenesis and cerebrovascular integrity, through the Wnt signaling pathway.

A large genome-wide association study of more than 5 million individuals reveals that 12,111 single-nucleotide polymorphisms account for nearly all the heritability of height attributable to common genetic variants.

Microflora Danica—an atlas of Danish environmental microbiomes—reveals that although human-disturbed habitats have high alpha diversity, species reoccur, revealing hidden homogeneity.

Lousdal et al. investigate the changes in polygenic scores for schizophrenia, depression, autism and attention deficit hyperactivity disorder using data from a Danish population-based case–cohort study that includes individuals born between 1981 and 2008.

Snelling et al. describe the methods used to establish a pregnancy register in the QResearch database. The resulting algorithm successfully sorts and consolidates delivery and pregnancy loss (incl. terminations) records from primary and secondary care datasets, creating a valuable resource for future research into pregnant populations in England.

A global network of researchers was formed to investigate the role of human genetics in SARS-CoV-2 infection and COVID-19 severity; this paper reports 13 genome-wide significant loci and potentially actionable mechanisms in response to infection.

Classification of archaeal and bacterial viruses can be automated with an algorithm that identifies relationships on the basis of shared gene content.

The CommonMind Consortium sequenced RNA from dorsolateral prefrontal cortex of subjects with schizophrenia (N = 258) and control subjects (N = 279), creating a resource of gene expression and its genetic regulation. Using this resource, they found that ∼20% of schizophrenia loci have variants that may contribute to altered gene expression and liability.

Sequencing data from two large-scale studies show that most of the genetic variation influencing the risk of type 2 diabetes involves common alleles and is found in regions previously identified by genome-wide association studies, clarifying the genetic architecture of this disease.

A large-scale multi-ancestry whole-genome sequencing study of Alzheimer’s and related dementias identifies novel potential disease-causing variants, genetic risk and resilience factors, and offers a platform for advancing global research.

Biller et al. use long-read sequencing of fractionated ocean nanoparticles, showing that extracellular vesicles and virus-like particles contain distinct pools of genetic information and thus may differentially contribute to horizontal gene transfer dynamics in the ocean.

An analysis of 38 ancient genomes from the aurochs, the extinct ancestor of modern cattle, provides insight into the population ancestry and domestication of this species.

A consensus cell type atlas for the fly brain provides both an intellectual framework and open-source toolchains for brain-scale comparative connectomics.

Whole-exome sequencing identifies ten risk genes for schizophrenia implicated by rare protein-coding variants, a subset of which overlap with risk genes in other neurodevelopmental disorders.

A study shows that cross-reactivity of microbial antigens and self-antigens presented by HLA-B*27 may be important in the pathogenesis of diseases associated with HLA-B*27 and identifies the shared binding motif responsible.

Last year the first map of single nucleotide changes was published; now an international consortium has mapped even larger areas of differences, called copy number variants. These variants are at least 1,000-base-pair differences between individual people, and have been linked to both benign and disease-causing changes in the human genome.

Body size and composition are complex traits that are challenging to characterize due to environmental and genetic influences. Here, Arehart et al. disentangle shared and distinct genetic signals underlying body size and composition.

Whole-genome sequencing, transcriptome-wide association and fine-mapping analyses in over 7,000 individuals with critical COVID-19 are used to identify 16 independent variants that are associated with severe illness in COVID-19.

Using well-calibrated statistical methods the authors jointly analyze Undiagnosed Diseases Network genomes, identifying known and novel disease genes. Software is publicly available to support future cross-cohort rare disease discovery efforts.

Here the authors perform a trans expression quantitative trait locus meta-analysis study of over 3,700 people and link a USP18 variant to expression of 50 inflammation genes and lupus risk, highlighting how genetic regulation of immune responses drives autoimmune disease and informs new therapies.

Wolf Reik and Ian Dunham and colleagues cloned and sequenced the complete IGF2-H19 locus in tammar wallaby, a marsupial. Functional analyses revealed conservation of imprinting mechanisms, including germline DNA methylation, between marsupials and eutherians.