Archive for the ‘cancer letters’ Category
Last year, Pfizer fired one of its scientists following an investigation that ended with requests for retraction of five of her studies. Now, two of the five papers, which were first flagged on PubPeer, have been retracted.
One notice cites the Pfizer investigation, which found that cancer researcher Min-Jean Yin had included duplicated images in all five papers. Yin is the last author on both retracted papers.
Here’s the first notice from Clinical Cancer Research, which says most or all of the questioned images appear to be duplicates, and Pfizer — who sponsored the study and requested the retraction — can’t find the originals:
Read the rest of this entry »
Pharmaceutical giant Pfizer has announced it plans to retract five papers by a former employee, after an investigation found duplicated images.
As first reported today by Leonid Schneider, Pfizer has asked to retract five papers from the lab of Min-Jean Yin, a cancer researcher. A spokesperson for the company confirmed to us that Yin had been fired:
…Min-Jean Yin’s employment has been terminated as a result of our investigation.
The five papers to be retracted are: Read the rest of this entry »
There’s been a 10th retraction from two former postdocs at a UT-Southwestern cancer research center who were sanctioned by the Office of Research Integrity (ORI) last September, in part due to observations and comments from Retraction Watch readers.
It’s a 2008 Cancer Letters paper, “Methylation of apoptosis related genes in the pathogenesis and prognosis of prostate cancer,” retracted at the request of Makoto Suzuki, the first author who has claimed responsibility for falsifying data in this and five other papers. Read the rest of this entry »
A group at the University of Texas Southwestern led by Adi F. Gazdar that found evidence of inappropriate image manipulation in a number of their papers has retracted its seventh and eighth studies.
Two cancer papers retracted because authors “are unable to guarantee the accuracy of some of the figures”
Denise Egan, of the Institute of Technology Tallaght in Dublin, and colleagues published “In vitro anti-tumour and cyto-selective effects of coumarin-3-carboxylic acid and three of its hydroxylated derivatives, along with their silver-based complexes, using human epithelial carcinoma cell lines” and “A study of the role of apoptotic cell death and cell cycle events mediating the mechanism of action of 6-hydroxycoumarin-3-carboxylatosilver in human malignant hepatic cells” in 2007.
The two notices say the same thing: Read the rest of this entry »
Noriyuki Takai, a gynecologic cancer researcher at Oita University in Japan who retracted three papers last October, has four more retractions, these in Cancer Letters.
All but one of the notices reads as follows: Read the rest of this entry »