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• Chicago Infant Mortality Study

  The Chicago Infant Mortality Study (CIMS) was a population-based, prospective, case-control study conducted in metropolitan Chicago, Cook County, Illinois, to examine the risk factors for sudden infant death syndrome (SIDS) among a primarily Black population. Eligible case infants were aged birth to one year where the cause of death was determined to be SIDS while eligible control infants were aged one month to one year who died of other sudden unexpected infant death (SUID) causes. Recruitment occurred between November 1993 and April 1996. The goal of this ancillary multiomics study was to evaluate possible genetic and epigenetic determinates of SIDS and together with metabolomic profiles, identify novel clinical diagnostic tools to enable molecular autopsies and biomarkers to proactively identify and intervene in infants at greater risk of death from SIDS. The multiomics data was generated from medical examiner autopsy specimens and includes: whole exome sequencing genotypes; RNA-seq transcriptome and methylome profiles from autopsy heart tissue; and serum metabolomics profiles. The sample size available varies with the modality of the omics assay, but the total number of unique infants included is about 400.

  Study phs003790

• Non-neuronal TGF-β–mediated extracellular matrix remodeling drives neurodegeneration in a PSP-Richardson syndrome model

  Progressive supranuclear palsy-Richardson syndrome (PSP-RS) is a devastating neurodegenerative disorder marked by rapid motor decline, cognitive impairment, and widespread accumulation of pathological tau. Yet, the molecular triggers of sporadic PSP-RS remain elusive. In this study, we combined patient-derived midbrain organoids with integrative multi-omics to uncover a previously unrecognized pathological cascade. At the core lies an early and aberrant activation of TGF-β signaling, which initiates profound extracellular matrix (ECM) remodeling and aberrant integrin-mediated focal adhesion. This cascade leads to persistent hyperactivation of PI3K/AKT and MAPK/ERK pathways, disrupting cytoskeletal integrity, impairing autophagy, promoting pathological tau phosphorylation and mislocalization, and ultimately driving synaptic degeneration. Single-cell RNA sequencing revealed an ectopic expansion of vascular leptomeningeal-like cells (VLMCs), a collagen-producing population, accompanied by a broad ECM gene dysregulation unique to PSP-RS. Remarkably, pharmacological blockade of TGF-β, AKT, ERK, or mTOR signaling reversed tau pathology and restored synaptic integrity. These findings position TGF-β-driven ECM remodeling as a master regulator of neurodegeneration in sporadic PSP-RS and unveil multiple actionable therapeutic targets for this currently untreatable disease.

  Study EGAS50000001236

• NCI COVID-19 in Cancer Patients Study (NCCAPS): A Longitudinal Natural History Study

  NCCAPS is a longitudinal prospective cohort study designed to assess patient, disease and treatment factors associated with short- and long-term outcomes in patients with cancer who develop COVID-19. We also aimed to describe COVID-19 symptoms and treatments, and to describe disruptions in cancer treatment due to COVID-19. The study enrolled patients with cancer on active treatment or with a history of stem cell transplant or CAR-T cell therapy with new, active COVID-19, defined as being within 14 days of their first positive SARS-CoV-2 test. The study found that receipt of chemotherapy and baseline history of stroke, atrial fibrillation or pulmonary embolism were associated with a higher risk of hospitalization for COVID-19. Vaccination for SARS-CoV-2 was associated with a lower risk of hospitalization. Death due to COVID-19 was highest in patients with lymphoma, intermediate in those with acute leukemia and lung cancer, and lowest in those with other solid tumors and other hematologic cancers. Disruptions of cancer treatment were frequent in the first 30 days after SARS-CoV-2 infection.

  Study phs004178

• Effective screening strategy for deafness using a new-genetation sequencing platform: a consecutive analysis

  The diagnosis of the genetic etiology of deafness contributes to the clinical management of patients. We performed the following four genetic tests in three stages for 52 consecutive deafness subjects in one facility. We used the Invade assay and Sanger sequencing for the GJB2 gene or SLC26A4 gene in the first stage test, TaqMan genotyping assay in second stage test, and targeted exon sequencing using the massively parallel DNA sequencing in third stage test. Overall, we identified the genetic cause in 40% (21/52) of patients. The diagnostic rates of the first-, second- and third-stage genetic testing were 17%(9/52), 9%(4/43) and 21% (8/39), respectively. The combination approach using these genetic tests appears to be useful as a diagnostic tool for deafness patients. We recommended that genetic testing for the screening of common mutations in deafness genes using the Invader assay or TaqMan genotyping assay be performed as the initial evaluation. For the remaining undiagnosed cases, targeted exon sequencing using MPS is clinically and economically beneficial. This data set was MPS reads data (fastq) for 39 sensorineural hearing loss patients.

  Study JGAS000032

• Induction of fetal meiotic oocytes from embryonic stem cells in cynomolgus monkeys

  Human in vitro oogenesis provides a framework for clarifying the mechanism of human oogenesis. To create its benchmark, it is vital to promote in vitro oogenesis using a model physiologically close to humans. Here, we establish a foundation for in vitro oogenesis in cynomolgus (cy) monkeys: cy female embryonic stem cells harboring one active and one inactive X chromosome (Xa and Xi, respectively) differentiate robustly into primordial germ cell-like cells, which in xenogeneic reconstituted ovaries develop efficiently into oogonia and, remarkably, further into meiotic oocytes at the zygotene stage. This differentiation entails a comprehensive epigenetic reprogramming, including Xi reprogramming, yet, as partly observed in vivo, Xa and Xi remain epigenetically asymmetric with incomplete Xi reactivation. In humans and monkeys, the Xi epigenome in pluripotent stem cells functions as an Xi-reprogramming determinant. We further show that developmental-pathway over-activations with suboptimal up-regulation of relevant meiotic genes impede in vitro meiotic progression. Cy in vitro oogenesis exhibits critical homology with the human system, including with respect to bottlenecks, providing a salient model for advancing human in vitro oogenesis.

  Study JGAS000573

• Proteomic predictors of individualized nutrient-specific insulin secretion in health and disease

  Population level variation and molecular mechanisms behind insulin secretion in response to carbohydrate, protein, and fat remain uncharacterized despite ramifications for personalized nutrition. We now define prototypical insulin secretion dynamics in response to the three macronutrients in islets from 140 cadaveric donors, including those diagnosed with type 2 diabetes. We leverage the insulin response heterogeneity and use transcriptomics and proteomics to identify molecular pathways of specific nutrient responsiveness. Surprisingly, we find robust insulin secretion to fatty acid stimulus in ~8% of donors, challenging the idea that fat has negligible effects on insulin release. Distinct islet proteomes with differences in metabolic signalling networks convey this hyper-responsiveness to fat relative to carbohydrate. By comparing human islets to human embryonic stem cell-derived islet clusters, we show that, unlike glucose-responsiveness, fat hyper-responsiveness is equivalent and may be a hallmark of functionally immature cells. Our study represents the first comparison of dynamic responses to nutrients and multi-omics analysis in human insulin secreting cells. Responses of different people’s islets to carbohydrate, protein, and fat lay the groundwork for personalized nutrition.

  Study EGAS00001007241

• A Single-Cell and Spatial Atlas of Early Human Olfactory Development

  The human nasal region is a complex anatomical structure comprising neural crest- and placode-derived lineages, yet its developmental dynamics in humans remain poorly understood due to limited access to fetal tissue and challenges in resolving its spatial and cellular complexity. We built a single-cell and spatial transcriptomic atlas of the human fetal nasal region from 10 fetuses spanning post-conceptional weeks 7 to 12. Using snRNA-seq, we identify 34 cell types in the fetal nasal region and reconstruct lineage trajectories in the olfactory epithelium (OE). Spatial analyses uncover regionalized OE organization, dorsoventral gradients of olfactory receptors (ORs) and high-resolution OR expression. Combining snRNAseq and MERFISH, we reveal early onset of OR gene expression, with most olfactory sensory neurons (OSNs) following the one neuron-one receptor rule already during the first trimester. This work provides the first integrated molecular and spatial framework of early human nasal region and it provides an unprecedented molecular blueprint of the human olfactory system development. In addition, this study offers a foundational resource for embryologists and developmental biologists investigating sensory neurogenesis, epithelial patterning, and congenital diseases.

  Study EGAS50000001203

• Non-canonical NF-κB signaling skews B cells away from germinal center to low-affinity effector fate

  The non-canonical (NC) NF-κB pathway is a central regulator of B-cell development and survival, yet its role during B-cell mediated adaptive responses remains uncharted. Here, we uncover an unanticipated regulatory function for NC NF-κB in shaping humoral immunity. High-resolution mapping of NC NF-kB status in B cells from human lymphoid tissues revealed low activity in germinal center B-cells (GCB) than effector subsets, suggesting a selective attenuation. Consistently, mice model harboring B-cells with enforced NC NF-κB activation revealed near- complete loss of GCB and high-affinity antibodies, following vaccination. GCB loss was not driven by intrinsic defects in formation or expansion, but by an immune-niche dysregulation marked by regulatory T-cell expansion. Mechanistically, NC NF-κB activation promoted B-cell- derived IL-10, and blocking this axis normalize the niche and rescue GCB. Concurrently, NC NF- κB signaling boosted low-affinity antibody responses by transcriptionally priming follicular B- cells for plasmacytic differentiation. Together, these findings position NC NF-κB as a tunable rheostat linking B-cell signaling to immune-niche control and humoral immunity.

  Study EGAS50000001646

• Submitters and requesters Statistics

  EGA Statistics Bibliography Growth Community Archive Distribution Catalogue Here, we show the amount and global distribution of submitters and requesters Requester accounts created by country The below figure represents the number of requester accounts by country. In most of the cases cases, country was inferred from the requester email domain. Those requesters whose email domain could not be assigned to a country such as @gmail.com, are not included. Note that a requester is a user that has had a granted permission at some point in time. Requester Accounts Created by Country Download as PNG Download as JPG Download as WEBP Download as CSV map pie mapChart('requester-country', 'https://stats.ega-archive.org/requester/country') pieChart('requester-country-pie-chart', 'https://stats.ega-archive.org/requester/country','Requester accounts created by country') Requester accounts created by year The below figure represents the number of requester accounts by year. Note that a requester is a user that has had a granted permission at some point in time. Requester Accounts Created by Year Download as PNG Download as JPG Download as WEBP Download as CSV barChart('requester-year', 'https://stats.ega-archive.org/requester/year', ['Requester Accounts', 'Years'], true) Industry requester accounts The below figure represents the top 15 industry requesting companies. Industry Requester Accounts Download as PNG Download as JPG Download as WEBP Download as CSV pieChart('industry-requester-accounts', 'https://stats.ega-archive.org/industry/requester/accounts', 'Industry Requester Accounts') Submitter accounts created by country The below figure represents the number of submitter accounts by country. Location was infered from the requester email domain. Submitter Accounts Created by Country Download as PNG Download as JPG Download as WEBP Download as CSV map pie mapChart('submitter-accounts', 'https://stats.ega-archive.org/submitter/accounts/country') pieChart('submitter-accounts-pie-chart', 'https://stats.ega-archive.org/submitter/accounts/country','Submitter accounts created by country') Submitter accounts created by year The below figure represents the number of submitter accounts by year. Submitter Accounts Created by Year Download as PNG Download as JPG Download as WEBP Download as CSV barChart('submitter-users-year', 'https://stats.ega-archive.org/submitter/users/year', ['Submitter Accounts', 'Years'], true) DAC Members by Country The below figure represents the number of DAC members by country. DAC Members by Country Download as PNG Download as JPG Download as WEBP Download as CSV map pie mapChart('dac-members-by-country', 'https://stats.ega-archive.org/dac_member/country') pieChart('dac-members-by-country-pie-chart', 'https://stats.ega-archive.org/dac_member/country','DAC members by country')

  Documentation about/statistics/community

• Adaptive Therapy Exploits Fitness Deficits in Chemotherapy-Resistant Ovarian Cancer to Achieve Long-Term Tumor Control Open Access

  Drug resistance results in poor outcomes for cancer patients. Adaptive therapy is a potential strategy to address drug resistance that exploits competitive interactions between sensitive and resistant subclones. Here, we showed that adapting carboplatin dose according to tumor response (adaptive therapy) significantly prolonged survival of murine ovarian cancer models compared to standard carboplatin dosing, without increasing mean daily drug dose or toxicity. Platinum resistant ovarian cancer cells exhibited diminished fitness when drug was absent in vitro and in vivo, which caused selective decline of resistant populations due to reduced proliferation and increased apoptosis. Conversely fitter, sensitive cells re-grew when drug was withdrawn. Using a bioinformatics pipeline that exploits copy number changes to quantify the emergence of treatment resistance, analysis of cell‐free DNA obtained longitudinally from ovarian cancer patients during treatment showed subclonal selection through therapy, and measurements of resistant population growth correlated strongly with disease burden. These preclinical findings pave the way for future clinical testing of personalized adaptive therapy regimens tailored to the evolution of carboplatin resistance in individual ovarian cancer patients.

  Study EGAS50000001142