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Stem Cell Trial Data Mostly Go Unpublished

Less than half of completed stem cell studies in humans are published in peer-reviewed journals, according to an analysis of regenerative medicine trials. 

Written byAnna Azvolinsky
| 4 min read

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FLICKR, PETEThe results of about 45 percent of completed stem cell clinical trials end up published in academic journals, according to a study published in Stem Cell Reports (April 13). This trend is consistent with prior studies that found trial publication is not inevitable and only occurs for about 30 to 60 percent of all clinical trials from around the world registered within the National Institutes of Health (NIH)-maintained clinicaltrials.gov registry and results database.

“The study shows a gap between studies that have taken place and actual publication of the data, so a substantial number of trials testing cell-based interventions are not entering the public domain,” Leigh Turner, a bioethicist at the University of Minnesota who was not involved in the work, told The Scientist. “The underlying question [to this study and others] is, what is the ethical and scientific basis to exposing human research subjects to risk if there is not going to be any meaningful contribution to knowledge at the end of the process?”

“What is a consistent finding with prior work is that the results of a lot of trials, and especially early-phase trials, are never published. What’s novel is that this is the first such ...

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Meet the Author

  • head shot of blond woman wearing glasses

    Anna Azvolinsky received a PhD in molecular biology in November 2008 from Princeton University. Her graduate research focused on a genome-wide analyses of genomic integrity and DNA replication. She did a one-year post-doctoral fellowship at Memorial Sloan Kettering Cancer Center in New York City and then left academia to pursue science writing. She has been a freelance science writer since 2012, based in New York City.

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