Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘cancer letters’ Category

Breast cancer studies by fired Pfizer employee retracted

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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 Now, two of the five papers, which were first flagged on PubPeer, have been retracted.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 »

Pfizer fires employee, requests five retractions

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pfizerPharmaceutical 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 »

ORI-sanctioned former UT-Southwestern cancer researchers up to 10 retractions

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CLThere’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 »

Written by Megan Scudellari

May 18th, 2015 at 11:30 am

UT-Southwestern cancer researchers up to 8 retractions

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oncogeneA 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.

Here’s the notice for 2005’s “Aberrant methylation profile of human malignant mesotheliomas and its relationship to SV40 infection,” in Oncogene: Read the rest of this entry »

Two cancer papers retracted because authors “are unable to guarantee the accuracy of some of the figures”

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cancer lettersA team of researchers in Ireland has retracted two papers from Cancer Letters after concerns were apparently raised about some of the studies’ 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 »

Written by Ivan Oransky

April 26th, 2013 at 9:30 am

Retraction count for gynecologic cancer researcher Takai grows to seven

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cancerlettersNoriyuki 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 »

MD Anderson researcher Aggarwal loses paper in Cancer Letters

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Whether it’s a one-off or a sign of things to come, Bharat Aggarwal, the MD Anderson scientist at the center of a blogospheric storm—and an institutional investigation—over the validity of his data, has had a paper withdrawn by the journal Cancer Letters. Read the rest of this entry »

Written by amarcus41

February 9th, 2012 at 12:08 pm