Intended for healthcare professionals


The BMJ requires data sharing on request for all trials

BMJ 2015; 350 doi: (Published 07 May 2015) Cite this as: BMJ 2015;350:h2373
  1. Elizabeth Loder, acting head of research ,
  2. Trish Groves, deputy editor and editor in chief, BMJ Open
  1. 1The BMJ, London, UK
  1. Correspondence to: E Loder eloder{at}

Heeding calls from the Institute of Medicine, WHO, and the Nordic Trial Alliance, we are extending our policy

The movement to make data from clinical trials widely accessible has achieved enormous success, and it is now time for medical journals to play their part. From 1 July The BMJ will extend its requirements for data sharing to apply to all submitted clinical trials, not just those that test drugs or devices.1 The data transparency revolution is gathering pace.2 Last month, the World Health Organization (WHO) and the Nordic Trial Alliance released important declarations about clinical trial transparency.3 4

These announcements come on the heels of the US Institute of Medicine’s (IOM) report on sharing clinical trial data, which called for a transformation of existing scientific culture to one where “data sharing is the expected norm.”5 The efforts of industry, too, must be acknowledged, some of which caught many people by surprise. In particular, Medtronic’s cooperation with the Yale University Open Data project and GlaxoSmithKline’s leadership …

View Full Text