22994 results for "ega"

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• Whole Exome sequencing of colorectal cancer patients (SG-BULK)

  The study was approved by the institutional review board of Singhealth (2018-2795). Ten 5-µm tissue sections were cut using standard microtomy techniques. Each collected cell population was then extracted using the allprep kit. Extracted material was then quantified using a Qubit fluorometer. DNA-seq libraries were captured to exome regions using xGen Exome Research Panel v1.0 (IDT), and libraries were prepared using the KAPA Hyper prep kit. DNA libraries were sequenced to a target depth of ×200 for tumor sample, ×100 for normal samples on the Illumina HiSeq platform.

  Study EGAS00001006006

• Chromatin activation profiling of stereotyped chronic lymphocytic leukemias reveals a subset #8 specific signature

  The chromatin activation landscape of major subsets of chronic lymphocytic leukemia (CLL) with stereotyped B-cell receptor immunoglobulin is currently unknown. Here, we report the results of a whole-genome chromatin profiling of histone 3 lysine 27 acetylation of 18 CLLs from subsets #1, #2, #4, and #8 which were compared against non-stereotyped CLLs and normal B cell subpopulations. Although subsets #1, #2, and #4 were similar to their non-stereotyped CLL counterparts with concordant somatic hypermutation status, subset #8 displayed a remarkably different chromatin activation profile.

  Study EGAS00001006457

• High-resolution lung adenocarcinoma expression subtypes identify tumors with dependencies on MET, CDK4, CDK6, and PD-L1

  Lung adenocarcinoma is one of the most common cancer types with various treatment modalities. However, better biomarkers to predict therapeutic response are still needed to improve precision medicine. We utilized a consensus hierarchical clustering approach on 509 LUAD cases from TCGA to identify five robust LUAD expression subtypes. We then integrated genomic (patient and cell line) and proteomic data to help define biomarkers of response to targeted therapies and immunotherapies. This approach defined subtypes with unique proteogenomic and dependency profiles.

  Study EGAS00001006461

• Guardians_of_the_genome__protecting_DNA_from_endogenous_sources_of_damage_

  Analysis of mutational signatures caused by DNA repair defects in human induced pluripotent stem (iPS) cells. A reference human iPS cell line will be used for genetic manipulation to introduce homozygous knockouts of 100 genes known to be involved in or connected to DNA repair or DNA editing. Following a defined period of growth after homozygous knockout of each gene, sub clones will be generated and sequenced. The progenitor “parental” IPS cell line will be used to generate reference sequence data, in order to determine the mutational signature acquired due to the gene knockout.

  Study EGAS00001000800

• An isolated cohort of samples from the Greek island of Crete that have been genotyped on the Illumina CoreExome array.

  Isolated populations can empower the identification of rare variation associated with complex traits through next generation association studies. Here we have genotyped individuals from a Greek population isolate on the Illumina CoreExome Beadchip. The HELIC (Hellenic Isolated Cohorts) MANOLIS (Minoan Isolates) collection focuses on Anogia and surrounding Mylopotamos villages. Recruitment of this population-based sample was primarily carried out at the village medical centres. All individuals were older than 17 years and had to have at least one parent from the Mylopotamos area. www.helic.org

  Study EGAS00001000896

• Whole Genome Sequences of 18th century African descended individuals from Charleston, South Carolina.

  This study presents Whole Genome Sequencing results from the Anson Street African Burial Ground Project, which is a community-based initiative aimed at understanding the histories of 37 Ancestors found during construction in Charleston, South Carolina. Here we report fastq files for all 37 Ancestors. DNA was extracted at the University of Tennessee-Knoxville following Dabney et al. 2013, and dual index libraries prepared using a modified NEBNext Ultra II kit with partial USER enzyme digestion. Libraries were then enriched for human genomic DNA (MyBaits) and sequenced on Illumina Platforms.

  Study EGAS00001006693

• Exome Sequencing Reveals Frequent Inactivating Mutations in BAP1, ARID1A, and PBRM1 in Intrahepatic Cholangiocarcinomas

  Through exomic sequencing of 32 intrahepatic cholangiocarcinomas, we discovered frequent inactivating mutations in multiple chromatin remodeling genes (including BAP1, ARID1A, and PBRM1) – mutation in one of these genes occurred in almost half of the carcinomas sequenced. We also identified frequent mutations at previously reported hotspots in genes encoding the metabolic enzymes IDH1 and IDH2 in intrahepatic cholangiocarcinomas. In contrast, TP53 was the most frequently altered gene in a series of nine gallbladder carcinomas. These studies highlight the importance of dysregulation of chromatin remodeling in intrahepatic cholangiocarcinomas.

  Study EGAS00001001108

• Analyzing the expression profiles of genes in ureters with and without indwelling stents using RNAseq 

  The objective of the work is to explore the pathways and mechanisms driving inflammation and fibrosis in stented ureters. In total, 6 pigs underwent cystoscopic unilateral ureteral stent insertion for 14 days. Ureteral tissue was harvested in 3 pigs, while the remaining 3 pigs had their stents removed, and were recovered for 7 days. Three separate pigs served as controls. Stents cause significant inflammation and fibrosis of ureters. Gene set enrichment analysis confirmed fibrotic changes and tissue proliferation and suggests that epithelial-mesenchymal transition is a driver of fibrosis.

  Study EGAS00001006855

• Genome-wide identification of distinct miRNA-mRNA target regulation pairs in Non-Hodgkin lymphomas: a report from the ICGC MMML-Seq consortium

  We obtained miRNA profiles by miRnome sequencing from ICGC MMML-Seq patients diagnosed with Burkitt lymphoma, diffuse large B-cell lymphoma and follicular lymphoma and provide evidence of subtype-specific miRNA expression differences. We describe differentially expressed, mutated, edited and not previously annotated miRNAs. Addditionally, by performing argonaute-2 photoactivatable ribonucleoside-enhanced cross-linking and immunoprecipitation (PAR-CLIP) experiments, we obtained a set of biochemically-validated miRNA binding sites and identified miRNA-mRNA interaction pairs with a negative correlation in patient RNASeq data.

  Study EGAS00001001394

• Accuracy and repeatability of epigenome-based signatures trained on Illumina MethylationEPIC BeadChip data

  Illumina DNA methylation microarrays are popular tools for discovering methylation patterns that enable epigenome-based trait prediction. To ensure reliable and accurate predictions, the robustness of the methylation assay is critical. This dataset comprises technical quadruplicate llumina MethylationEPIC (v1.0) data from matched cervical and blood samples, derived from four individuals, to evaluate the precision of methylation values and the repeatability of epigenome-based models trained to predict disease and aging. Fresh, and frozen blood were treated as separate tissue types, so the data stems from 4 * 4 * 3 = 48 microarrays.

  Study EGAS00001007184