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• Rapid Acceleration of Diagnostics - Digital Health Technologies (RADx-DHT): Large Scale Flu Surveillance Study (LSFS)

  The purpose of this study was to better understand behavioral and physiological functioning in relation to recent self-reported influenza and influenza-like-illness (ILI), including coronavirus disease (COVID-19). Over 65,000 Achievement members responded to a weekly one-click survey asking if they had experienced ILI within the previous 7-day period. If they responded no, they were given the option to complete a survey about their risk factors and behavior. If they responded yes, they were given the option to complete a survey asking about the specifics of the incident. Participants were also asked to sync their wearable activity trackers and health apps in order for researchers to better understand changes in behavioral and physiological outcomes related to self-reported ILI experiences.DOI: https://rapids.ll.mit.edu/10.57895/fkth-d352

  Study phs002539

• HNPCC-Sys: Molecular Characterization of Lynch Syndromes

  Lynch Syndrome (LS) tumors are characterized by constitutional mutations in DNA mismatch-repair genes. Colorectal cancers (CRCs) are the predominant tumor type in patients with LS. Here, we have used whole-genome and transcriptome sequencing of LS- CRC to find similarities and differences of mutation and gene expression characteristics between LS-CRC and sporadic CRC (data provided by TCGA via dbGaP). Furthermore, we were interested in the molecular heterogeneity of LS-CRC. We have performed a molecular characterization of LS-tumors and of matched tumor-distant reference colonic mucosa based on whole-genome DNA- and RNA-sequencing analyses. Our data indicates the existence of two subgroups of LS-CRCs, G1 and G2, where G1 tumors show a higher number of somatic mutations, higher microsatellite slippage and a different mutation spectrum.

  Study phs001407

• Melanoma Brain Metastasis Single-Cell RNA Sequencing Atlas

  Melanoma brain metastasis (MBM) frequently occurs in patients with advanced melanoma, yet our understanding of the underlying salient biology is rudimentary. Here, we performed single-cell/nucleus RNA-seq in 22 treatment-naive MBM (scRNA-seq n=5; snRNA-seq n=17) and 10 extracranial melanoma metastases (ECM; all snRNA-seq), and matched spatial single-cell transcriptomics (n=16) and T cell receptor (TCR)-seq (n=5). Key observations were validated in matched bulk RNA- and ATAC-seq of isogenic MBM/ECM cell culture models (n=24; including triplicates (labeled as *-A, -B and -C) of 4 MBM- and 4 ECM-derived patient cell lines with 2 matched pairs). This work provides comprehensive insights into MBM biology and serves as a foundational resource for further discovery and therapeutic exploration.

  Study phs002944

• Prevention of Viral Hepatitis and HIV in Drug Users - A Hepatitis B Model for HIV and an HB Vaccine Model for HIV Vaccine Trials in Drug Users (DASH)

  The goal of the proposed study is to use the Hepatitis B virus (HBV) vaccine as a model for a future Human Immunodeficiency Virus (HIV) vaccine trial, examining the efficacy of community-based outreach intervention as well as an accelerated vaccine schedule as a method for increasing acceptance/adherence with HBV vaccination protocols among not-in-treatment drug users. This study also examined the effect of HBV vaccination coupled with community-based outreach intervention on reducing the incidence of HIV, HBV and Hepatitis C Virus (HCV) infections and the frequency of needle use and sexual risk behaviors related to these viral transmissions. A secondary purpose is to assess the antibody response after HBV vaccination as a measurement of immunological response in drug users.

  Study phs002331

• TCGA WGS Variants Across 18 Cancer Types

  Even though whole genome sequence (WGS) data has been generated and published in many studies, much of this information is not yet processed for use in down-stream analysis. This study's aim is to provide 1342 WGS normal-tumor paired single nucleotide variations (SNP) over 18 different cancer types provided by The Cancer Genome Atlas (TCGA) project. Individual level data for TCGA can be accessed by requesting access for phs000178. This data includes variations within self-reported white and African-American populations. Variations that exist within the tumor tissue but are absent in associated normal organ tissue (as compared to the human reference genome) are reported. Data published includes SNP and small insertions and deletions, which were generated through a pipeline including the VarScan2 variant calling software.

  Study phs003155

• International Genetics of Parkinson Disease Progression (IGPP) Consortium: EPIPARK and HBS2 Cohorts

  EPIPARK and HBS2 cohorts were analyzed as part of the International Genetics of Parkinson Disease Progression (IGPP) Consortium. EPIPARK is a population-based cohort to study non-motor symptoms in parkinsonism in the city of Lübeck, Germany led by Drs. Meike Kasten and Christine Klein. HBS2 is a recently enrolled subset of participants in the Harvard Biomarkers Study led by Dr. Clemens Scherzer (www.bwhparkinsoncenter.org/biobank) of 89 participants with a diagnosis of Parkinson Disease (PD). Genotyping with Illumina Infinium Multi-Ethnic Genotyping Arrays (MEGA chip) was performed by Dr. Scherzer, Harvard Medical School and Brigham and Women’s Hospital. 179 participants with a diagnosis of PD from EPIPARK and 89 participants with a diagnosis of PD from HBS2 met Q/C criteria were analyzed.

  Study phs002328

• RNA-Seq from PMM2-CDG Patients and Healthy Controls

  Besides the predominant neurological involvement of PMM2-CDG patients, around 20% of patient mortality has been linked to severe infections. However, the immunological dysfunction in PMM2-CDG is not well understood. In this study, we aimed to address this gap and study the molecular mechanisms affected behind immunological issues in PMM2-CDG. Primary skin fibroblasts from three PMM2-CDG patients and three healthy controls were stimulated or not with TNF-alpha and their gene expression was assessed by RNA sequencing. The response to TNF-alpha was characterized based on the differential expressed genes and functional enrichment and and compared between PMM2-CDG and healthy individuais. Gene expression alterations and functional enrichment were further validated by several experimental assays by ELISA, Flow Cytometry and Western Blotting.

  Study phs003313

• National Sleep Research Resource (NSRR): Hispanic Community Health Study/Study of Latinos

  The Hispanic Community Health Study / Study of Latinos (HCHS/SOL) is a multi-center epidemiologic study in Hispanic/Latino populations to determine the role of acculturation in the prevalence and development of disease, and to identify risk factors playing a protective or harmful role in Hispanics/Latinos. The study is sponsored by the National Heart, Lung, and Blood Institute (NHLBI) and six other institutes, centers, and offices of the National Institutes of Health (NIH) contributed to the first phase of the project. Raw polysomnography data are available from the HCHS/SOL Baseline visit and raw actigraphy data are available from the Sueño Ancillary visit. Primary HCHS/SOL data can be requested through dbGaP phs000810 Hispanic Community Health Study /Study of Latinos (HCHS/SOL).

  Study phs003543

• 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

• Clinical relevance of TCGA subtypes for gastric cancer patients

  There is a clinical need for the availability of molecular biomarkers in the tratment of gastric cancer (GC), since survival rates remain poor with a 5-year survival rate of only ~`40% for patients with resectable disease. These markers will elad to a more tailored approach in the treatment of GC, which enhances efficacy and reduces toxicity. Recently, The Cancer Genome Atlas (TCGA) classified GC patients into four molecular subgroups: Epstein Barr Virus positive (EBV+), genomically stable (GS), microsatellite instable (MSI), and chromosomal instable (CIN). For this purpose we aim to collect tumor tissue blocks from patients who participated in the Dutch D1/D2 or the CRITICS trial and who gave informed consent for translational studies. Associations between TCGA subtypes and outcomes to these different therapeutic options will be analyzed.

  Study EGAS50000000779