4815 results for "*oma"

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• 3D genome topology distinguishes molecular subgroups of medulloblastoma

  Medulloblastoma (MB) has four molecular subtypes, but their 3D genome architecture differences are unclear. We used in situ Hi-C on 28 surgical specimens and a patient-derived xenograft to reconstruct the 3D genome architecture of MB subtypes, finding that topologically associating domain (TAD) insulation scores could distinguish MB subtypes.

  Study EGAS50000000540

• AYA glioma NGS

  Gliomas are a major cause of cancer-related death in adolescents and young adults (AYA, ages 15-39 years). Different molecular alterations drive gliomas in children and adults leading to distinct biology and clinical consequences. At the convergence of these age groups - the AYA population – little is known about the implications of pediatric vs adult-type alterations. To address this, we analyzed a population-based cohort of 1456 clinically and molecularly characterized gliomas aged 0-39 years. Potentially targetable pediatric-type alterations were found in 31% of AYA gliomas and conferred superior outcomes compared to adult-type alterations. This submission includes the generated NGS data for children, adolescent, and young adults with gliomas. Data includes targeted panel of glioma genes and low-pass WGS (1x coverage).

  Study EGAS50000000383

• CAYA glioma sequencing data

  Low pass WGS and targeted glioma panel sequencing of low and high-grade gliomas in children, adolescent, and young adult patients.. File type is paired-read fastq files (2 per sample). Sequencing was performed on Illumina NextSex instruments. Genes covered on panel: TP53, H3F3A, HIST1H3B, HIST1H3C, IDH1, IDH2, KRAS, PIK3CA, TERT promoter, PTPN11, FGFR1/2/3, MYB, BRAF, MYBL1, EGFR, PDGFRA, MYCN, MYC, CDKN2A.

  Dataset EGAD50000000560

• Mayo Clinic - Fecal Microbiota and Adenomas

  Background: Adenomatous polyps are the most common precursor to colorectal cancer (CRC), the second leading cause of cancer death in the United States. We sought to learn more about early events of carcinogenesis by investigating shifts in the gut microbiota of patients with adenomas. Methods: We analyzed 16S rRNA gene sequences from the fecal microbiota of patients with adenomas (n=233) and without (n=547). Results: Multiple taxa were significantly more abundant in patients with adenomas, including Bilophila, Desulfovibrio, pro-inflammatory bacteria in the genus Mogibacterium, and multiple Bacteroidetes species. Patients without adenomas had greater abundances of Veillonella, Firmicutes (Order Clostridia), and Actinobacteria (family Bifidobacteriales). Many of our findings were consistent with previously reported shifts in the gut microbiota of CRC patients. Importantly, the altered adenoma profile is predicted to increase primary and secondary bile acid production, as well as starch, sucrose, lipid, and phenylpropanoid metabolism. Conclusions: These data suggest that diets rich in refined sugar, protein, and lipids may lead to increased bile acid production, creating a colonic environment that promotes the growth of bile-tolerant microbes such as Bilophilia and Desulfovibrio. In turn, these microbes may produce genotoxic or inflammatory metabolites such as H2S and secondary bile acids, catalyzing adenoma development and eventually CRC. Impact: This study suggests a plausible biological mechanism to explain the links between diet, shifts in the microbiota, and CRC. This represents a first step toward resolving the complex interactions that shape the adenoma-carcinoma sequence of CRC and may facilitate personalized therapeutics focused on the microbiota.

  Study phs001204

• Somatic Mutations in Individual Skin Cells

  Ultraviolet (UV) radiation is the primary cause of melanoma through the acquisition of driver mutations in melanocytes. It also plays a significant role in oncogenesis in other skin cells, such as keratinocytes. However, the mutational profiles vary widely among different skin cancers, and the early mutational processes in different cell types from the same skin, is not well understood. Additionally, our preliminary studies also suggest that the mutation burden in different skin cells vary significantly based on risk factors such as the anatomical site and the use of tanning beds. To explore this, we employed innovative Next Generation Sequencing (NGS) tools to perform a site-matched comparison of the genomic landscapes of melanocytes, keratinocytes, and fibroblasts. From 20 biopsies of physiologically normal skin, collected from various anatomical sites across 16 donors, we have performed DNA-sequencing on 106 melanocytes, 78 keratinocytes and 13 fibroblasts. Of these samples, we have also simultaneously performed RNA-sequencing on 78 melanocytes, 46 keratinocytes and 9 fibroblasts. For normal bulk DNA, we also performed targeted (UCSF500; n=9) or exome sequencing (n=8) of skin or saliva samples from the donors.

  Study phs003683

• Whole-genome array data for 42 Roma and 52 non-Roma from Czech Republic

  This dataset contains one VCF file with 94 individuals genotyped with the Human Origins Array.

  Dataset EGAD50000001103

• Czech Roma and non-Roma array data

  42 Roma and 52 non-Roma Czech volunteers genotyped with the Axiom TM genome-wide human origins array

  Dac EGAC50000000478

• MET amplification in gastric cancer

  Targeting MET in gastric and gastroesophageal junction adenocarcinoma (GC) with monoclonal antibodies or tyrosine kinase inhibitors has had limited success. We hypothesize that other prognostic and response determining genetic alterations explain the poor outcome and lack of response to MET-targeted therapies.

  Study EGAS50000000744

• Spatially Resolved Tumor Ecosystems and Cell States in Gastric Adenocarcinoma Progression and Evolution

  This whole-section GeoMx Digital Spatial Profiler (DSP) dataset was a part of the discovery cohort in the study. The dataset contains raw FASTQ files from Regions of Interest (ROIs) across complete tumor tissue sections, enabling detection of 18,000 protein-coding genes. GeoMx DSP data from 1063 ROIs (after QC) from 15 GCs were included in the datasets.

  Dataset EGAD50000000500

• Single cell multi-omics analysis of chromothriptic medulloblastoma highlights genomic and transcriptomic consequences of genome instability

  Chromothripsis is a form of genome instability, whereby a presumably single catastrophic event generates extensive genomic rearrangements of one or few chromosome(s). However, little is known about the heterogeneity of chromothripsis across different clones from the same tumor, as well as changes in response to treatment. We analyzed single-cell genomic and transcriptomic alterations linked with chromothripsis in human p53-deficient medulloblastoma (n=7). We reconstructed the order of somatic events, identified early alterations likely linked to chromothripsis and depicted the contribution of chromothripsis to malignancy. We characterized subclonal variation of chromothripsis and its effects on double-minute chromosomes, cancer drivers and putatively druggable targets. Furthermore, we highlighted the causative role and the fitness consequences of specific rearrangements in neural progenitors.

  Study EGAS00001005410

• A Phase Ib/II Study of Regorafenib and Paclitaxel in Beyond First-line Advanced Esophagogastric Carcinoma (REPEAT)

  Regorafenib showed promising results in gastric cancer. We aimed to assess the tolerability of regorafenib and paclitaxel in advanced esophagogastric cancer (EGC) patients refractory to first-line treatment and explore potential biomarkers.. We performed enzyme-linked immunosorbent assay measurements of galectin-1, RNA sequencing, and shallow wholegenome sequencing of metastatic tumor biopsies for biomarker analyses.

  Study EGAS00001006054

• Blood-based monitoring of relapsed/refractory cHL patients predict responses to PD-1 blockade treatment

  Hodgkin lymphoma (cHL) patients are uniquely susceptible to treatment with programmed cell death-1 (PD-1) treatment. However, monitoring with FDG-PET/CT, the current response detection standard, is challenging. Here, we address the potential applicability of tissue biomarkers and blood-based biomarkers in PD-1 treated cHL patients. We evaluated 9p24.1/PD-L1/PD-L2 alterations, and expression of PD-L1 and antigen presentation molecules (HLA class I/II) in 9 tissue biopsies of 4 patients. In addition, we assessed circulating tumor DNA (ctDNA), extracellular vesicle associated miRNAs (EV-miRNAs), soluble PD-L1 and serum TARC (sTARC) in 26 longitudinal blood samples of these patients during PD-1 treatment. We found that the predictive power of tissue biomarkers is dependent on the timing of the biopsy . The dynamics of blood-based biomarkers: sTARC, EV-miRNAs and ctDNA corresponded well immunotherapy treatment response. Therefore, blood-based biomarkers are promising monitoring strategies in PD-1 treated cHL patients and should be further explored in clinical trials or observational studies.

  Study EGAS00001005894

• Analysis of T cells in follicular lymphoma

  This study aimed to identify new heterogeneities in human T cells of follicular lymphoma. To do so, we performed scRNA-seq of human lymph node and follicular lymphoma samples. We identified minor T cell subsets expanding in follicular lymphoma.

  Study EGAS50000000778

• Shallow Whole Genome Sequencing (sWGS) from REPEAT trial

  Samples associated to: "A phase Ib/II study of regorafenib and paclitaxel in patients with beyond first-line advanced esophagogastric carcinoma (REPEAT)". sWGS from 97 Esophagogastric Carcinoma samples. sWGS was done to carry out Copy Number Analysis. Dataset includes: .fastq, .bam and .bai files.

  Dataset EGAD50000001161

• Refractory Classic Hodgkins Lymphoma (cHL) sWGS

  Associated with the study: Blood-based Monitoring of Relapsed/Refractory Hodgkin Lymphoma Patients Predict Responses to Anti-PD-1 Treatment. 26 ctDNA Samples from 4 patients followed longitudinally. sWGS performed for copy number aberration (CNA) analysis.

  Dataset EGAD50000001163

• scRNA-seq of human follicular lymphoma and lymph node

  Cryopreserved cells from human nodal follicular lymphoma and lymph node samples were thawed and processed for scRNA-seq analysis. CD3+ CD19− 7-AAD− live T cells (six FL samples from the Original cohort) or 7-AAD− whole live hematopoietic cells (five lymph node and nine FL samples from Validation cohort 1) were sorted using a FACS Aria II or III instrument (BD Biosciences). To generate single-cell emulsions, 6,000–10,000 live cells were loaded into the 10X Genomics Chromium Controller for single-cell partitioning, along with the reverse transcriptase reagent mixture and 3' or 5' gel beads. Sorted T or whole hematopoietic cells were converted to barcoded scRNA-seq libraries using 10X Genomics Chromium single cell 3' reagent kits (v3) for the Validation cohort 1, 5' reagent kits (v1) for the Original cohort, according to the manufacturer’s instructions. The libraries were sequenced on an Illumina HiSeq X Ten or NovaSeq X Plus system, mapped to the human genome (build GRCh38), and demultiplexed using CellRanger pipelines (v3.1.0, 10x Genomics).

  Dataset EGAD50000001143

• RNA-sequencing from ALL patients treated on the Australasian Leukaemia and Lymphoma Group (ALLG) ALL06 study.

  Dataset contains RNA-sequencing data (fastq files) from 45 patients treated on the the Australasian Leukaemia and Lymphoma Group (ALLG) ALL06 study, an MRD-stratified Paediatric Protocol. Patient samples (bone marrow or peripheral blood) were taken at diagnosis. mRNA was extracted from blast cells and underwent paired-end sequencing (75bp) using the illumina NextSeq platform. Genomic data was used for identification of genomic drivers of acute lymphoblastic leukaemia (ALL).

  Dataset EGAD50000001111

• High-grade serous ovarian carcinoma tumour whole genome sequencing variants

  Tumour somatic variants (in VCF format) called from paired tumour-germline whole genome sequencing (using IDT library preparation system followed by sequencing on Illumina NovaSeq platform) of three high-grade serous ovarian tumour samples. The dataset comprises three VCF variant files.

  Dataset EGAD50000001131

• High-grade serous ovarian carcinoma tumour exome sequencing variants

  Tumour variants (in VCF format) from exome sequencing (using Agilent SureSelect and TWIST library preparation systems followed by sequencing on Illumina HiSeq and NovaSeq platforms) of 108 high-grade serous ovarian tumour samples. Germline variants from EGAD00001006030 for these individuals were used to call somatic and tumour-only variants separately, creating two VCF files per sample (except for one sample without paired germline data- somatic variant file only provided). The dataset comprises 215 VCF variant files.

  Dataset EGAD50000001132

• Transcriptome - Uveal Melanomas MPI

  Total RNA sequencing on 4 uveal melanoma samples. Libraries were prepared using the TruSeq Stranded Total RNA Library Prep Kit with Ribo-Zero Gold. Paired-end libraries (2 x 75 bp) were sequenced on HiSeq 4000 instrument (Illumina).

  Dataset EGAD50000001138

• Exome - Uveal Melanomas MPI

  Whole exome sequencing on 4 uveal melanoma samples and corresponding germline samples. Libraries were prepared using the Nextera Rapid Capture Expanded Exome kit. Paired-end libraries (2 x 75 bp) were sequenced on HiSeq 4000 instrument (Illumina).

  Dataset EGAD50000001137

• WGS of CTCs enriched using high-throughout microfluidic device from entire cancer patient leukopak

  Single-cell low-pass WGS analysis (illumina platform, PE150, 1-2x coverage) was performed on CTCs enriched using high-throughout microfluidic device from entire leukopak from patients with metastatic prostate cancer (GU-1 and GU-2) and metastatic hepatocellular carcinoma (HCC-1 and HCC-2).

  Study EGAS50000000723

• Spatiotemporal Charting of Human Esophageal Development for Epidermolysis Bullosa Cell Therapy

  Human fetal esophageal development is not well understood. We present a spatio-temporal single-cell multi-omics atlas to close such a long-standing knowledge gap. With such an atlas, we describe the cellular heterogeneity and lineage transitions of esophageal epithelium and stroma. We delineate the cellular dynamics of both epithelial and stromal populations during the establishment of esophageal tissue architecture. We identify niche paracrine signals that drive the development of the epithelium. We develop an in silico perturbation deep learning algorithm to further enlighten the in vitro derivation of esophageal basal cells (eBCs) and we use the algorithm to screen for effective and efficient signaling pathway perturbations that could guide in vitro eBC differentiation. We observe that chemically perturbing prioritized pathways yields functional eBCs. Such success sheds light on cell replacement therapy of eBC dysfunction, such as Epidermolysis Bullosa.

  Study phs003281

• Genotyping Data From Subjects With Brain Lesions

  These data are from subjects with adult diffuse glioma (IDH wildtype, IDH mutant/1p19q intact, and IDH mutant/1p19q co-deleted), brain lesions, tumefactive multiple sclerosis, brain metastases, central nervous system lymphoma and controls genotyped on the Affymetrix Axiom Precision Medicine array. Data from this study were used for case/control association studies and developing polygenic risk scores.

  Study phs003806

• Evolutionary Pressures Shape Undifferentiated Pleomorphic Sarcoma Development and Radiotherapy Response

  To study tumor evolution during tumorigenesis and in response to radiotherapy, we performed whole exome sequencing of 120 spatially distinct tumor regions and matched germline DNA from 20 patients with undifferentiated pleomorphic sarcoma. This data was utilized to generate personalized capture probes for targeted resequencing of the tumor and normal samples along with 17 matched plasma samples for circulating tumor DNA analysis. We found evidence of subclonal selection prior to treatment that was increased after radiotherapy. In addition, circulating tumor DNA analysis was able to measure the abundance of subclones before, during, and after treatment. This dbGaP submission includes whole exome sequencing and targeted resequencing from the study.

  Study phs003830