Instances of Scientific Misconduct


Yuhji Saitoh

Yuhji Saitoh who worked in the Yachiyo Medical Center and the Tokyo Women’s Medical University in Japan, received 53 retractions at one point.  Along with his co-author Yoshitaka Fujii (who is also featured on this site for having roughly 183 retractions), received many retractions due to the falsification/fabrication of data and results, lack of IRB (Institutional Review Board) approval, lack of patient/participant consent, ethical violations by author, and general concerns about data and results. Both Yuhji Saitoh and Yoshitaka Fujii were members of the Japanese Society of Anesthesiology (JSA), but received permanent bans from the society due to the misconduct. Their retractions were evaluated based on the codes of COPE (Committee of Publication Ethics) and their retracted papers were within the scopes of anesthesia, pharmacology, toxicology, neurology, neuroscience, etc.


A year ago, an academic society recommended nine papers be retracted. Journals have retracted only two. (Retraction Watch, August 21, 2018)

Anesthesiology group loses ten papers at once in one journal (Retraction Watch, June 2, 2020)

Anesthesiology society bans co-author of researcher with record-number of retractions (June 6, 2017)

Co-author of retraction record-holder likely fabricated his own data, analysis shows (Retraction Watch, December 20, 2016)

Numerous Retractions Lead to Permanent Ban for Japanese Anesthesia Researcher (National Library of Medicine, June 9, 2017)

Retraction of papers authored by Yuhji Saitoh – Beyond the Fujii phenomenon (Ebscohost, July 2019)

Retraction of Papers Authored by Yuhji Saitoh – Beyond the Fujii Phenomenon (National Library of Medicine, July 2019)

Retraction of papers authored by Yuhji Saitoh – Beyond the Fujii phenomenon (PMC, July 2019)

Retraction of papers authored by Yuhji Saitoh – Beyond the Fujii phenomenon (Semantic Scholar, 2019)

Yuhji Saitoh (ResearchGate, December 2019)