Retracted manuscript: Overexpression of transketolase protein TKTL1 is associated with occurrence and progression in nasopharyngeal carcinoma.

Reason: In the process of investigating an accusation of misconduct in the above manuscript, the Editors have found significant evidence of fraud perpetrated by some of the authors. 1) Dr. Wei Jia Kong’s name was used as the corresponding author without his knowledge or consent. Furthermore, Dr. Cai Pengcheng was unaware of his status as an author of the manuscript. 2) A fake email address for Dr. Kong was constructed and used by the authors to intercept any information that would be sent to the corresponding author. 3) Dr. Zhang Song and Ms. Yang Juhong have modified their accounts of the events several times during the investigation, making it difficult to determine exactly what occurred with respect to the data in question. However, The Editors have determined that Figure 4 of this manuscript is a re-publication of data in Cancer Letters (2007) 253:108-114. The authors have misrepresented their data as being from 2 separate cell lines.