MEDICAL SCIENCES Retraction for “Deficient Smad7 expression: A putative molecular defect in scleroderma,” by Chunming Dong, Shoukang Zhu, Tao Wang, Woohyun Yoon, Zhiru Li, Rene J. Alvarez, Peter ten Dijke, Barbara White, Fredrick M. Wigley, and Pascal J. Goldschmidt-Clermont, which appeared in issue 6, March 19, 2002, of Proc Natl Acad Sci USA (99:3908–3913; 10.1073/pnas.062010399).
The authors wish to note the following: “It has recently been brought to our attention that some of the elements in Fig. 3 of our paper may have been fabricated. Unfortunately, because of the time elapsed since publication, we no longer have in our possession the original gels and blots that were used to produce the figure. While we trust that the other data in the paper is genuine and the overall conclusions sound, we have no alternative but to request a retraction of our paper. We apologize for any inconvenience this may cause.”