SciELO - Scientific Electronic Library Online

vol.144 número1Acortar los estudios de pre título en Medicina, en Chile: ¿Ahora y para todos?Problemas ético-clínicos en hemodiálisis crónica: percepción de médicos y enfermeras índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google


Revista médica de Chile

versión impresa ISSN 0034-9887

Rev. méd. Chile vol.144 no.1 Santiago ene. 2016 



Sharing clinical trial data: a proposal from the International Committee of Medical Journal Editors

Compartir los datos de los ensayos clínicos: una propuesta del Comité Internacional de Editores de Revistas Médicas


Darren B. Taichman, MD, PhD; Joyce Backus, MSLS; Christopher Baethge, MD; Howard Bauchner, MD; Peter W. de Leeuw, MD; Jeffrey M. Drazen, MD; John Fletcher, MB, BChir, MPH; Frank A. Frizelle, MBChB, FRACS; Trish Groves, MBBS, MRCPsych; Abraham Haileamlak, MD; Astrid James, MBBS; Christine Laine, MD, MPH; Larry Peiperl, MD; Anja Pinborg, MD; Peush Sahni, MBBS, MS, PhD; Sinan Wu, MD

Corresponding to:

El Comité Internacional de Editores de Revistas Médicas (ICMJE) considera que es una obligación ética compartir responsablemente los datos generados por ensayos clínicos, porque los participantes se han sometido a un riesgo particular. En un consenso creciente, muchos patrocinadores en el mundo -Fundaciones, Agencias Gubernamentales y la industria proveedora en salud- ya exigen compartir los datos. Por este motivo, en esta Editorial, que será publicada simultáneamente en enero de 2016 por las revistas que a la fecha integran el ICMJE, dicho Comité propone requerir a los autores de ensayos clínicos que compartan con otros los datos individuales, anónimos, que generaron los resultados que se presentan en el manuscrito enviado a publicación (incluyendo Tablas, Figuras y anexos o material suplementario) en un plazo menor a seis meses después de su publicación. Se define como “datos que generaron los resultados” a los datos individuales de cada paciente (anónimos) que se requieren para reproducir los hallazgos que muestra el manuscrito, incluyendo sus metadatos. Este requisito será aplicado a los ensayos clínicos que comiencen a reclutar pacientes desde un año después que el ICMJE adopte como requisito compartir los datos, lo que ocurrirá después de considerar el “feedback” que se reciba al difundir esta Editorial. El documento original, que se reproduce a continuación, reitera la definición de “ensayo clínico” y explicita la forma y condiciones que propone para cumplir con este requisito.


The International Committee of Medical Journal Editors (ICMJE) believes that there is an ethical obligation to responsibly share data generated by interventional clinical trials because participants have put themselves at risk. In a growing consensus, many funders around the world -foundations, government agencies, and industry- now mandate data sharing. Here we outline ICMJE’s proposed requirements to help meet this obligation. We encourage feedback on the proposed requirements. Anyone can provide feedback at by 18 April 2016.

The ICMJE defines a clinical trial as any research project that prospectively assigns people or a group of people to an intervention, with or without concurrent comparison or control groups, to study the cause-and-effect relationship between a health-related intervention and a health outcome. Further details may be found in the Recommendations for the Conduct, Reporting, Editing and Publication of Scholarly Work in Medical Journals at

As a condition of consideration for publication of a clinical trial report in our member journals, the ICMJE proposes to require authors to share with others the deidentified individual-patient data (IPD) underlying the results presented in the article (including tables, figures, and appendices or supplementary material) no later than 6 months after publication. The data underlying the results are defined as the IPD required to reproduce the article’s findings, including necessary metadata. This requirement will go into effect for clinical trials that begin to enroll participants beginning 1 year after the ICMJE adopts data-sharing requirements*.

Enabling responsible data sharing is a major endeavor that will affect the fabric of how clinical trials are planned and conducted and how their data are used. By changing the requirements of the manuscripts we will consider for publication in our journals, editors can help foster this endeavor. As editors, our direct influence is logically, and practically, limited to those data underpinning the results and analyses we publish in our journals.

The ICMJE also proposes to require that authors include a plan for data sharing as a component of clinical trial registration. This plan must include where the researchers will house the data and, if not in a public repository, the mechanism by which they will provide others access to the data, as well as other data-sharing plan elements outlined in the 2015 Institute of Medicine Report (e.g., whether data will be freely available to anyone upon request or only after application to and approval by a learned intermediary, whether a data use agreement will be required)1. has added an element to its registration platform to collect data-sharing plans. We encourage other trial registries to similarly incorporate mechanisms for the registration of data-sharing plans. Trialists who want to publish in ICMJE member journals (or nonmember journals that choose to follow these recommendations) should choose a registry that includes a data-sharing plan element as a specified registry item or allows for its entry as a free-text statement in a miscellaneous registry field. As a condition of consideration for publication in our member journals, authors will be required to include a description of the data-sharing plan in the submitted manuscript. Authors may choose to share the deidentified IP Dunderlying the results presented in the article under less restrictive, but not more restrictive, conditions than were indicated in the registered data-sharing plan.

ICMJE already requires the prospective registration of all clinical trials prior to enrollment of the first participant. This requirement aims, in part, to prevent selective publication and selective reporting of research outcomes, and to prevent unnecessary duplication of research effort. Including a commitment to a data-sharing plan is a logical addition to trial registration that will further each of these goals. Prospective trial registration currently includes documenting the planned primary and major secondary endpoints to be assessed, which enables identification of incomplete reporting as well as posthoc analyses. Declaring the plan for sharing data prior to their collection will further enhance transparency in the conduct and reporting of clinical trials by exposing when data availability following trial completion differs from prior commitments.

Sharing clinical trial data, including deidentified IPD, requires planning to ensure appropriate ethics committee or institutional review board approval and the informed consent of study participants. Accordingly, we will defer these requirements for 1 year to allow investigators, trial sponsors, and regulatory bodies time to plan for their implementation.

Just as the confidentiality of trial participants must be protected (through the deidentification of IPD), and the needs of those reasonably requesting data met (through the provision of useable data), the reasonable rights of investigators and trial sponsors must also be protected. ICMJE proposes the following to safeguard these rights. First, ICMJE editors will not consider the deposition of data in a registry to constitute prior publication. Second, authors of secondary analyses using these shared data must attest that their use was in accordance with the terms (if any) agreed to upon their receipt. Third, they must reference the source of the data using a unique identifier of a clinical trial’s data set to provide appropriate credit to those who generated it and allow searching for the studies it has supported. Fourth, authors of secondary analyses must explain completely how theirs differ from previous analyses. In addition, those who generate and then share clinical trial data sets deserve substantial credit for their efforts. Those using data collected by others should seek collaboration with those who collected the data. However, because collaboration will not always be possible, practical, or desired, an alternative means of providing appropriate credit needs to be developed and recognized in the academic community. We welcome ideas about how to provide such credit.

Data sharing is a shared responsibility. Editors of individual journals can help foster data sharing by changing the requirements of the manuscripts they will consider for publication in their journals. Funders and sponsors of clinical trials are in a position to support and ensure adherence to IPD sharing obligations. If journal editors become aware that IPD sharing obligations are not being met, they may choose to request additional information; to publish an expression of concern; to notify the sponsors, funders, or institutions; or in certain cases, to retract the publication.

In the rare situation in which compliance with these requirements is impossible, editors may consider authors’ requests for exceptions. If an exception is made, the reason(s) must be explained in the publication.

Sharing data will increase confidence and trust in the conclusions drawn from clinical trials. It will enable the independent confirmation of results, an essential tenet of the scientific process. It will foster the development and testing of new hypotheses. Done well, sharing clinical trial data should also make progress more efficient by making the most of what may be learned from each trial and by avoiding unwarranted repetition. It will help to fulfill our moral obligation to study participants, and we believe it will benefit patients, investigators, sponsors, and society.

ICMJE Members identified as authors of this Editorial

Darren B. Taichman, MD, PhD, Secretary, ICMJE, Executive Deputy Editor, Annals of Internal Medicine

Joyce Backus, MSLS, Representative and Associate Director for Library Operations, National Library of Medicine

Christopher Baethge, MD, Chief Scientific Editor, Deutsches Ärzteblatt (German Medical Journal)

Howard Bauchner, MD, Editor-in-Chief, JAMA (Journal of the American Medical Association) and the JAMA Network

Peter W. de Leeuw, MD, Editor-in-Chief, Nederlands Tijdschrift voor Geneeskunde (The Dutch Medical Journal)

Jeffrey M. Drazen, MD, Editor-in-Chief, New England Journal of Medicine

John Fletcher, MB, BChir, MPH, Editor-in-Chief, Canadian Medical Association Journal

Frank A. Frizelle, MBChB, FRACS, Editor-in-Chief, New Zealand Medical Journal

Trish Groves, MBBS, MRCPsych, Head of Research, British Medical Journal

Abraham Haileamlak, MD, Editor-in-Chief, Ethiopian Journal of Health Sciences

Astrid James, MBBS, Deputy Editor, The Lancet

Christine Laine, MD, MPH, Editor-in-Chief, Annals of Internal Medicine

Larry Peiperl, MD, Chief Editor, PLOS Medicine

Anja Pinborg, MD, Scientific Editor-in-Chief, Ugeskrift for Laeger (Danish Medical Journal)

Peush Sahni, MBBS, MS, PhD, Representative and Past President, World Association of Medical Editors

Sinan Wu, MD, Representative, Chinese Medical Journal

Feedback may be posted at by 18 April 2016.

Note: This editorial is being published simultaneously in Annals of Internal Medicine, British Medical Journal, Canadian Medical Association Journal, Chinese Medical Journal, Deutsches Ärzteblatt (German Medical Journal), Ethiopian Journal of Health Sciences, JAMA (Journal of the American Medical Association), Nederlands Tijdschrift voor Geneeskunde (The Dutch Medical Journal), New England Journal of Medicine, New Zealand Medical Journal, PLOS Medicine, Revista Médica de Chile, The Lancet, and Ugeskrift for Laeger (Danish Medical Journal).

Disclaimer: Dr. Sahni's affiliation as representative and past president of the World Association of Medical Editors (WAME) does not imply endorsement by WAME member journals that are not part of the ICMJE.

Disclosures: Disclosures can be viewed at

Ann Intern Med. 2016. doi:10.7326/M15-2928


* The ICMJE plans to adopt data-sharing requirements after considering feedback received to the proposals made here.



1. Institute of Medicine. Sharing Clinical Trial Data: Maximizing Benefits, Minimizing Risk. Washington, DC: National Academies Pr; 2015.         [ Links ]


Corresponding Author: Darren B. Taichman, MD, PhD,
American College of Physicians, 190 N. Independence Mall West, Philadelphia, PA 19106;

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons