ATSUSHI SUZUKI, SHIGEHIRO OBATA, MIDORI HAYASHIDA, HIROKAZU KAWANO, TAKESHI NAKANO AND KATSUYA SHIRAKI

Nature Med. 7, 88–93 (2001).

Our scientific colleagues at Daiichi Pharmaceutical Company were unable to reproduce the results we reported in this article. Hence, we wish to retract this article. We apologize for any misunderstanding this might have caused.

A. Suzuki, S. Obata, M. Hayashida, H. Kawano, T. Nakano and K. Shiraki

We conducted a thorough analysis of all of the experimental data presented in the article. We discovered a lack of documentation by the authors of the raw experimental data. We asked an independent team of scientists to reproduce the results, and they were unable to do so. In view of the uncertainties raised by this investigation, we respectfully ask to retract this article.

H. Tachizawa

Board Director

Daiichi Pharmaceutical Co. Ltd.

In view of the fact that the authors no longer stand by their results, I wish to retract the views reported in my News & Views article “A SADS defect in tumor cells provides optimism” (Nature Med. 7, 26–27 (2001)) which dealt with the above article.

H. Takahashi

Note from the editors: We at Nature Medicine strive to attain the highest standards of scientific accuracy through our rigorous peer-review process. After publication of the above article, we received numerous communications from scientists raising doubts about the accuracy of the data. In response to these concerns, we requested an investigation by Daiichi Pharmaceutical Company that sponsored the work. Based on the findings of this investigation, the authors and the sponsoring company requested a retraction of the article. In view of these circumstances, the author of the News & Views also requested a retraction. We thank the readers for their vigilance in bringing these matters to our attention.