TCTim Clark

Tim Clark

*This is an algorithmically generated author record based on publicly available information.

Current Organizations / Institutes

The organizations/institutes from the scholar's latest article

Previous Organizations / Institutes

The organizations / institutes from the scholar's other articles in the past ten years


Tim Clark has a total of 487 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Unique, Persistent, Resolvable: Identifiers as the Foundation of FAIR

    by Nick Juty, Sarala M. Wimalaratne, Stian Soiland-Reyes, John Kunze, Carole A. Goble, Tim Clark

    The FAIR principles describe characteristics intended to support access to and reuse of digital artifacts in the scientific research ecosystem. Persistent, globally unique identifiers, resolvable on the Web, and associated with a set of additional descriptive metadata, are foundational to FAIR data. Here we describe some basic principles and exemplars for their design, use and orchestration with other system elements to achieve FAIRness for digital research objects.


  • Open Access

    A data citation roadmap for scholarly data repositories

    by Martin Fenner, Mercè Crosas, Jeffrey S. Grethe, David Kennedy, Henning Hermjakob, Phillippe Rocca-Serra, Gustavo Durand, Robin Berjon, Sebastian Karcher, Maryann Martone, et al.

    This article presents a practical roadmap for scholarly data repositories to implement data citation in accordance with the Joint Declaration of Data Citation Principles, a synopsis and harmonization of the recommendations of major science policy bodies. The roadmap was developed by the Repositories Expert Group, as part of the Data Citation Implementation Pilot (DCIP) project, an initiative of FORCE11.org and the NIH-funded BioCADDIE (https://biocaddie.org) project. The roadmap makes 11 specific recommendations, grouped into three phases of implementation: a) required steps needed to support the Joint Declaration of Data Citation Principles, b) recommended steps that facilitate article/data publication workflows, and c) optional steps that further improve data citation support provided by data repositories. We describe the early adoption of these recommendations 18 months after they have first been published, looking specifically at implementations of machine-readable metadata on dataset landing pages.


  • Top Cited Papers
    Open Access

    A data citation roadmap for scientific publishers

    by Helena Cousijn, Amye Kenall, Emma Ganley, Melissa Harrison, David Kernohan, Thomas Lemberger, Fiona Murphy, Patrick Polischuk, Simone Taylor, Maryann Martone, et al.

    This article presents a practical roadmap for scholarly publishers to implement data citation in accordance with the Joint Declaration of Data Citation Principles (JDDCP), a synopsis and harmonization of the recommendations of major science policy bodies. It was developed by the Publishers Early Adopters Expert Group as part of the Data Citation Implementation Pilot (DCIP) project, an initiative of FORCE11.org and the NIH BioCADDIE program. The structure of the roadmap presented here follows the “life of a paper” workflow and includes the categories Pre-submission, Submission, Production, and Publication. The roadmap is intended to be publisher-agnostic so that all publishers can use this as a starting point when implementing JDDCP-compliant data citation. Authors reading this roadmap will also better know what to expect from publishers and how to enable their own data citations to gain maximum impact, as well as complying with what will become increasingly common funder mandates on data transparency.


  • Open Access

    Analysis of extracellular mRNA in human urine reveals splice variant biomarkers of muscular dystrophies

    by Layal Antoury, Ningyan Hu, Leonora Balaj, Sudeshna Das, Sofia Georghiou, Basil Darras, Tim Clark, Xandra O. Breakefield, Thurman M. Wheeler

    Urine contains extracellular RNA (exRNA) markers of urogenital cancers. However, the capacity of genetic material in urine to identify systemic diseases is unknown. Here we describe exRNA splice products in human urine as a source of biomarkers for the two most common forms of muscular dystrophies, myotonic dystrophy (DM) and Duchenne muscular dystrophy (DMD). Using a training set, RT-PCR, droplet digital PCR, and principal component regression, we identify ten transcripts that are spliced differently in urine exRNA from patients with DM type 1 (DM1) as compared to unaffected or disease controls, form a composite biomarker, and develop a predictive model that is 100% accurate in our independent validation set. Urine also contains mutation-specificDMDmRNAs that confirm exon-skipping activity of the antisense oligonucleotide drug eteplirsen. Our results establish that urine mRNA splice variants can be used to monitor systemic diseases with minimal or no clinical effect on the urinary tract.


  • Neuronal calcineurin transcriptional targets parallel changes observed in Alzheimer disease brain

    by Sarah C. Hopp, Nathan A. Bihlmeyer, John P. Corradi, Charles Vanderburg, Angela M. Cacace, Sudeshna Das, Timothy W. Clark, Rebecca A. Betensky, Bradley T. Hyman, Eloise Hudry

    Synaptic dysfunction and loss are core pathological features in Alzheimer disease (AD). In the vicinity of amyloid‐β plaques in animal models, synaptic toxicity occurs and is associated with chronic activation of the phosphatase calcineurin (CN). Indeed, pharmacological inhibition of CN blocks amyloid‐β synaptotoxicity. We therefore hypothesized that CN‐mediated transcriptional changes may contribute to AD neuropathology and tested this by examining the impact of CN over‐expression on neuronal gene expression in vivo. We found dramatic transcriptional down‐regulation, especially of synaptic mRNAs, in neurons chronically exposed to CN activation. Importantly, the transcriptional profile parallels the changes in human AD tissue. Bioinformatics analyses suggest that both nuclear factor of activated T cells and numerous microRNAs may all be impacted by CN, and parallel findings are observed in AD. These data and analyses support the hypothesis that at least part of the synaptic failure characterizing AD may result from aberrant CN activation leading to down‐regulation of synaptic genes, potentially via activation of specific transcription factors and expression of repressive microRNAs.Open science badges: This article has received a badge for *Open Materials* because it provided all relevant information to reproduce the study in the manuscript. The complete Open Science Disclosure form for this article can be found at the end of the article. More information about the Open Practices badges can be found at https://cos.io/our-services/open-science-badges/. image Read the Editorial Highlight for this article on page 8.


  • Open Access

    Uniform resolution of compact identifiers for biomedical data

    by Sarala M. Wimalaratne, Nick Juty, John Kunze, Greg Janée, Julie A. McMurry, Niall Beard, Rafael Jimenez, Jeffrey S. Grethe, Henning Hermjakob, Maryann E. Martone, et al.

    Most biomedical data repositories issue locally-unique accessions numbers, but do not provide globally unique, machine-resolvable, persistent identifiers for their datasets, as required by publishers wishing to implement data citation in accordance with widely accepted principles. Local accessions may however be prefixed with a namespace identifier, providing global uniqueness. Such “compact identifiers” have been widely used in biomedical informatics to support global resource identification with local identifier assignment. We report here on our project to provide robust support for machine-resolvable, persistent compact identifiers in biomedical data citation, by harmonizing the Identifiers.org and N2T.net (Name-To-Thing) meta-resolvers and extending their capabilities. Identifiers.org services hosted at the European Molecular Biology Laboratory - European Bioinformatics Institute (EMBL-EBI), and N2T.net services hosted at the California Digital Library (CDL), can now resolve any given identifier from over 600 source databases to its original source on the Web, using a common registry of prefix-based redirection rules. We believe these services will be of significant help to publishers and others implementing persistent, machine-resolvable citation of research data.


  • Open Access

    Open Science strategies for NIH data management, sharing, and citation

    by Tim Clark, Helena Cousijn, Daniel S Katz, Martin Fenner

    This document summarizes a series of authoritative views on research data management, sharing and citation, developed in Expert Groups, Working Groups, and other activities organized through FORCE11 (http://force11.org), an international community of over 2,000 members dedicated to advancing research communications and e-scholarship. It was prepared in response to NIH Request for Information (RFI) NOT-OD-17-015 (URL: https://grants.nih.gov/grants/guide/notice-files/NOT-OD-17-015.html), and was reviewed and approved by the FORCE11 Board of Directors on January 19, 2017.

  • Open Access

    Open Science strategies for NIH data management, sharing, and citation

    by Tim Clark, Helena Cousijn, Daniel S Katz, Martin Fenner

    This document summarizes a series of authoritative views on research data management, sharing and citation, developed in Expert Groups, Working Groups, and other activities organized through FORCE11 (http://force11.org), an international community of over 2,000 members dedicated to advancing research communications and e-scholarship. It was prepared in response to NIH Request for Information (RFI) NOT-OD-17-015 (URL: https://grants.nih.gov/grants/guide/notice-files/NOT-OD-17-015.html), and was reviewed and approved by the FORCE11 Board of Directors on January 19, 2017.

  • Open Access

    Uniform resolution of compact identifiers for biomedical data

    by Sarala M. Wimalaratne, Nick Juty, John Kunze, Greg Janée, Julie A. McMurry, Niall Beard, Rafael Jimenez, Jeffrey S. Grethe, Henning Hermjakob, Maryann E. Martone, et al.

    Most biomedical data repositories issue locally-unique accessions numbers, but do not provide globally unique, machine-resolvable, persistent identifiers for their datasets, as required by publishers wishing to implement data citation in accordance with widely accepted principles. Local accessions may however be prefixed with a namespace identifier, providing global uniqueness. Such “compact identifiers” have been widely used in biomedical informatics to support global resource identification with local identifier assignment. We report here on our project to provide robust support for machine-resolvable, persistent compact identifiers in biomedical data citation, by harmonizing the Identifiers.org and N2T.net (Name-To-Thing) meta-resolvers and extending their capabilities. Identifiers.org services hosted at the European Molecular Biology Laboratory – European Bioinformatics Institute (EMBL-EBI), and N2T.net services hosted at the California Digital Library (CDL), can now resolve any given identifier from over 600 source databases to its original source on the Web, using a common registry of prefix-based redirection rules. We believe these services will be of significant help to publishers and others implementing persistent, machine-resolvable citation of research data.


  • Open Access

    Interoperability and FAIRness through a novel combination of Web technologies

    by Mark D Wilkinson, Ruben Verborgh, Luiz Olavo Bonino da Silva Santos, Tim Clark, Morris A Swertz, Fleur D.L. Kelpin, Alasdair J. G. Gray, Erik A. Schultes, Erik M. van Mulligen, Paolo Ciccarese, et al.

    Data in the life sciences are extremely diverse and are stored in a broad spectrum of repositories ranging from those designed for particular data types (such as KEGG for pathway data or UniProt for protein data) to those that are general-purpose (such as FigShare, Zenodo, Dataverse or EUDAT). These data have widely different levels of sensitivity and security considerations. For example, clinical observations about genetic mutations in patients are highly sensitive, while observations of species diversity are generally not. The lack of uniformity in data models from one repository to another, and in the richness and availability of metadata descriptions, makes integration and analysis of these data a manual, time-consuming task with no scalability. Here we explore a set of resource-oriented Web design patterns for data discovery, accessibility, transformation, and integration that can be implemented by any general- or special-purpose repository as a means to assist users in finding and reusing their data holdings. We show that by using off-the-shelf technologies, interoperability can be achieved atthe level of an individual spreadsheet cell. We note that the behaviours of this architecture compare favourably to the desiderata defined by the FAIR Data Principles, and can therefore represent an exemplar implementation of those principles. The proposed interoperability design patterns may be used to improve discovery and integration of both new and legacy data, maximizing the utility of all scholarly outputs.