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Posterior fossa ependymoma: a comprehensive review of molecular classification, management guidelines, and clinical outcomes (Part I of ependymomas across compartments)

1 day 10 hours ago
CONCLUSIONS: PF ependymoma comprises two biologically and clinically distinct entities. Maximal safe resection and focal radiotherapy remain the backbone of treatment, but integrating molecular subgrouping, imaging biomarkers, and modern radiotherapeutic techniques into surgical and adjuvant planning offers the clearest path to improved outcomes, particularly for high-risk PFA tumors.
George W Koutsouras

Genetic data sharing by clinical laboratories in Canada: A position statement by the Canadian College of Medical Geneticists

1 day 10 hours ago
Next-generation sequencing has transformed diagnosis, prognosis, and treatment across rare disease, cancer, immunology, and infectious disease. As variant interpretation may evolve with emerging evidence, sharing genetic data is essential to improve diagnostic accuracy and advance genomic medicine. However, practical guidance for implementing clinical genetic data sharing remains limited. The Canadian College of Medical Geneticists (CCMG), therefore, developed national guidance to support...
Jordan Lerner-Ellis

Crystal structure and biochemical analysis of the polyester-degrading carboxylesterase SM0281 from the symbiotic legume-associated rhizobacterium Sinorhizobium (Ensifer) meliloti

1 day 10 hours ago
The microbial degradation of synthetic polyesters such as polyethylene terephthalate (PET) is mediated by diverse α/β-hydrolases, many of which remain poorly characterized. In this study, we investigated SM0281, an uncharacterized α/β-hydrolase from the symbiotic legume-associated rhizobacterium Sinorhizobium meliloti. Sequence analysis revealed that SM0281 shares low similarity with known polyester-degrading enzymes. Biochemical characterization of purified SM0281 demonstrated that it is a...
Sofia Lemak

Wearable-Based Assessment for Relapse Prediction Following Repetitive Transcranial Magnetic Stimulation for Depression: Protocol for a Feasibility Study (WARN-D Study)

2 days 10 hours ago
CONCLUSIONS: This study will provide initial evidence on the feasibility and utility of wearable-based digital phenotyping in individuals receiving rTMS for TRD. Our findings will inform the design of future large-scale studies aimed at wearable-supported relapse prevention and precision monitoring in depression care.
Clarissa Dine

Melatonin, circadian metabolism, mitochondrial remodeling, and cell size dynamics in primitive hematopoietic stem cells

2 days 10 hours ago
Primitive hematopoietic stem cells (pHSCs) sustain lifelong hematopoiesis through tightly regulated transitions between quiescence and activation. Circadian oscillations influence hematopoiesis; however, the mechanisms coordinating metabolic state and stem cell function daily remain incompletely defined. Here, we show that circadian cues coordinated a program of mitochondrial remodeling, metabolic reprogramming, and structural adaptation in pHSCs. At night, peak melatonin levels were associated...
Priyasmita Chakrabarti

A trainable language model with potential to modulate translation rates in non-model organisms by generating upstream untranslated region sequence libraries

6 days 10 hours ago
Tuning protein expression in non-model organisms is often constrained by the lack of validated genetic parts and predictive design tools. Translational tuning through the modulation of upstream untranslated regions (5'-UTRs) offers a potentially organism-agnostic route, but existing methods typically rely on mechanistic assumptions, prior knowledge that may not be available in non-model contexts, or the screening of sequence libraries. Here, we present a simple generative approach for creating...
Alexander D Duggan

A chromatin-informed transcriptional regulatory framework to stratify patients and guide therapy selection in triple-negative breast cancer

1 week ago
Triple-negative breast cancer is an aggressive and heterogeneous breast cancer subtype with few effective targeted therapies and frequent resistance to chemotherapy. Here, we integrate transcriptional regulatory network inference with chromatin accessibility across a large-scale multi-system collection of primary tumors, patient-derived xenografts and model cell lines to quantify transcription factor activity and identify regulators that underpin triple-negative breast cancer identity. This...
Shalini Bahl

Assessing SARS-CoV-2 immune markers in vaccinated asymptomatic adults after household exposure in Canada (AB-PROTECT): a prospective cohort study

1 week 1 day ago
BACKGROUND: Determining the early immune response against SARS-CoV-2 in individuals who are vaccinated is essential for better understanding immune memory and informing COVID-19 vaccine design and use. We aimed to evaluate antibody and T-cell immune markers against SARS-CoV-2 infection among household contacts of index patients infected with SARS-CoV-2.
Christopher Kandel

A Truncated Serpin D1 Variant Regulates Adseverin-Dependent Actin Severing and Is Required for Osteoclastogenesis

1 week 1 day ago
Adseverin is a Ca^(2+)-dependent, actin severing protein that promotes fusion of osteoclast precursors in osteoclast formation. Currently it is not understood how actin severing activity is regulated in osteoclastogenesis. Mass spectrometry of adseverin immunoprecipitates from osteoclasts showed that adseverin associated with Serpin D1. Purified Serpin D1 interacted with adseverin in vitro in a Ca^(2+)-dependent manner. Ca^(2+) increased actin severing by ~2-fold. Cells that differentiated into...
Yongqiang Wang

Determinants of functional burden pleiotropy and gene dosage responses across human traits

1 week 2 days ago
Pleiotropic and monotonic effects of gene dosage are central to understanding comorbidities in developmental pediatric and psychiatric disorders, yet the underlying biological processes are not well characterized. Here we develop a functional burden analysis to investigate the association of all protein-coding copy-number variants, genome-wide, with 43 complex traits in approximately 500,000 UK Biobank participants. We test variant associations disrupting 172 tissue or cell-type gene sets,...
Sayeh Kazem

Contribution of copy number variants to schizophrenia in East Asian populations

1 week 4 days ago
Studies on schizophrenia-associated rare copy number variants (CNVs) have predominantly focused on people of European (EUR) ancestry. Here we present a rare CNV study of schizophrenia in East Asian (EAS) populations, comprising 20,903 cases and 23,258 controls. We observed a significantly elevated genome-wide rare CNV burden in EAS cases compared with controls. Cross-population comparisons showed largely consistent rare CNV effects on schizophrenia risk. In the EAS sample, we identified nine...
Yu Chen

Ancestry-Dependent Immunologic and Prognostic Effects Characterize the Prostate Cancer Urinary Proteome

1 week 4 days ago
Urine is an attractive biomarker analyte for non-invasive longitudinal monitoring of health and disease, particularly for diseases of the genitourinary tract, like prostate and bladder cancer. The composition of an individual's urine reflects both genetic and lifestyle characteristics that differ across geographies and populations, like diet, hydration and other socio-economic factors. While men of African ancestry have elevated prostate cancer risk, it is unclear to what extent this influences...
Annie Ha

Characterizing features of the genetic architecture underlying autism from a multi-ancestry perspective

1 week 4 days ago
Autism spectrum disorder (ASD; MIM 209850) is reported to vary globally from 0.01% in East Asian populations to 4.36% in certain Australian cohorts. Despite high heritability estimates (61-94%), the genetic architecture underlying ASD susceptibility remains poorly characterized across diverse populations, as most genomic studies have initially focused on individuals of European ancestry. To investigate ancestry-specific genetic contributions to ASD, we analyzed whole-genome sequencing data from...
Marla Mendes

Evidence of ZZγ Production with the ATLAS Detector

1 week 5 days ago
This Letter presents the first evidence of the simultaneous production of two Z bosons and one photon with the ATLAS detector at the Large Hadron Collider. The measurement is performed using the full Run-2 dataset, recorded from 2015 to 2018, of proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 140 fb^{-1}. The fully leptonic final state with four leptons and one photon is analyzed, pp→ZZγ→ℓ^{+}ℓ^{-}ℓ^{'+}ℓ^{'-}γ with ℓ,ℓ^{'}=e or μ. This...
G Aad

Genomic meta-analyses of binge-eating behavior and anorexia nervosa yield insights into the unique and shared biology of eating disorder phenotypes

1 week 6 days ago
Eating disorders-including anorexia nervosa (AN), bulimia nervosa and binge-eating disorder-are clinically distinct but exhibit symptom overlap and diagnostic crossover. Genomic analyses have mostly examined AN. Here we conducted a genomic meta-analysis of case-control studies of binge-eating behavior (BE; 39,279 cases, 1,227,436 controls), alongside analyses of AN (24,223 cases, 1,243,971 controls) and its subtypes (all European ancestries). We identified six BE-associated loci, including loci...
Jet D Termorshuizen

Integrated signatures define mutational processes in prostate cancer

1 week 6 days ago
Prostate cancer follows a long and heterogeneous disease course with incompletely understood aetiology¹. Here we dissect the mutational processes shaping the genomes of 959 donors from the Pan Prostate Cancer Group and assess their clinical relevance. By integrating de novo extracted single-base substitution, insertion-deletion and copy-number signatures with six novel complex structural variant signatures, we identify eight integrated mutational footprints (IMFs) that collectively explain the...
Andreas J Gruber

Recurrent mechanisms of biallelic epigenetic inactivation reveal new putative tumour suppressor genes in prostate cancer

2 weeks ago
The inactivation of tumour suppressor genes is a key step in cancer development, and is usually achieved by homozygous loss. In prostate cancer, however, large genomic regions are often hemizygously lost, which complicates the identification of putative tumour suppressors in these regions. Here, we develop Epi2Hit, an integrative computational method that leverages whole genome sequencing, epigenomic profiling and gene expression to identify biallelic inactivation of tumour suppressor genes...
Daria Kiriy

Phenomenological, Diagnostic, and Forensic Aspects of Gangstalking and Targeted Individuals

2 weeks ago
Gangstalking is a persecutory belief system espoused by targeted individuals who report being followed, monitored, harassed, or otherwise persecuted by groups of people in their community, often through the coordinated efforts of the government, law enforcement agencies, and strangers. Although the alleged harassment can take the form of conventional stalking, stereotypical gangstalking claims often include added victimization by street theater and directed energy weapons, along with...
Joseph M Pierre