Category: image manipulation

Authors retract PNAS Epstein-Barr virus paper for “anomalous and duplicated” figures

pnas 2515PNAS has retracted a paper on the cancer-causing Epstein-Barr virus just two months after publication, in a notice that fingers a now-former graduate student for manipulating figures.

The paper tries to explain how Epstein-Barr virus blocks the immune system’s attempts to destroy it. According to the notice, the three “nonexperimentalist authors” – identified in the paper as two P.I.’s from University of Texas at Austin and one from the University of California, San Francisco – didn’t know the figures “were not reflective of original Northern blot and immunoblot data.”

That leaves UT Austin PhD student Jennifer Cox under the bus. Her LinkedIn says she pursued a PhD from 2010-2015, though it’s unclear if she’s received a degree. Cox’s name is at the top of P.I. Christopher Sullivan’s list of past lab members, and she’s the only one on the page whose name doesn’t hyperlink to additional information, such as a contact.

The school issued a press release about the study that quoted Cox, which has been removed from the UT site but is still available on Science Daily: Continue reading Authors retract PNAS Epstein-Barr virus paper for “anomalous and duplicated” figures

Two more retractions appear for prominent MIT cancer researcher Robert Weinberg

genes and developmentTwo identical retraction notices have popped up for MIT professor Robert Weinberg, a highly-cited cancer researcher who had a retraction and a correction in 2013, both in Cancer Cell. 

These two new retractions, in Genes and Development, stem directly from another paper by Weinberg and colleagues in Cell that will apparently be retracted, as the “same analytical methodology was used,” according to the notices [see bottom of the post for an update].

Weinberg is highly regarded, and at least 20 of his papers have been cited over a thousand times.

First author Scott Valastyan was a promising postdoc at the time of the paper’s publication. He was a 2011 Runyon Fellow at Harvard, a three-year, $156,000 award for outstanding cancer postdocs. He doesn’t seem to have published anything since 2012, though he is listed as a joint inventor with Weinberg on patents filed in 2009 and 2014.

Here are the notices for “Concomitant suppression of three target genes can explain the impact of a microRNA on metastasis” (cited 73 times, according to Thomson Scientific’s Web of Knowledge) and “Activation of miR-31 function in already-established metastases elicits metastatic regression” (cited 54 times), both paywalled: Continue reading Two more retractions appear for prominent MIT cancer researcher Robert Weinberg

Second cell bio retraction from UPitt investigation of tweaked images

Journal of Cellular Physiology: Volume 229, Number 10, October 2Two researchers, Tong Wu and Chang Han, have lost a second paper as the result of a University of Pittsburgh investigation into image manipulations.

The first retraction, in Journal of Cellular Biochemistry, went live in February. The researchers, currently based at Tulane University, were originally tapped by pseudonymous tipster Juuichi Jigen, who created a website in 2012 to chronicle the allegations.

The blog lists six papers by the pair with supposedly questionable figures. According to Jigen, this latest retraction, in the Journal of Cellular Physiology, contains a figure (2A) that appears to reuse data from another paper, and another figure (3) where the data appear to be manipulated.

Continue reading Second cell bio retraction from UPitt investigation of tweaked images

Sun sets on Sun Yat-sen University cell bio paper

j cell scienceResearchers at Sun Yat-sen University in China have lost a paper in the Journal of Cell Science for “inappropriate figure manipulations,” which they blame entirely on the first author.

According to the notice, three figures were “inappropriately modified” — cells or nuclei were moved, and the edges of cell images were trimmed. The researchers place the responsibility on first author Liping Chen, claiming that “her co-authors were completely unaware.”

The modifications didn’t affect the conclusions, the note says, but after an investigation by Sun Yat-sen University, the journal decided to retract the paper. Liping Chen says she “regrets the inappropriate figure manipulations,” according to the note.

Continue reading Sun sets on Sun Yat-sen University cell bio paper

PLoS ONE mega-correction, but no retraction, for researcher who sued diabetes journal

Mario Saad, via unicamp.br
Mario Saad, via unicamp.br

PLoS ONE has just issued a 12-figure correction on a paper by Mario A. Saad, who sued the American Diabetes Association unsuccessfully in an attempt to prevent it from retracting four papers in its flagship journal Diabetes.

The corrections include taking out Western blots copied from another Saad paper, as well as several figures where the bands were “misplaced.”

PubPeer commenters suggest this may not be enough, calling seven additional figures into question. Continue reading PLoS ONE mega-correction, but no retraction, for researcher who sued diabetes journal

Heart journal issues expression of concern after fraud report

circulationThe American Heart Association’s journal Circulation has issued an expression of concern for a paper about the molecular underpinnings of arrhythmias that was co-authored by a biomedical engineer who committed fraud on a massive scale.

According to an investigation by the Office of Research Integrity (ORI), former Vanderbilt engineer Igor Dzhura faked nearly 70 images and drastically over-estimated the number of experiments he conducted. He was banned from receiving federal funding for three years.

The fraud has resulted in six retracted papers, Dzhura has agreed to retract six papers, which have been cited more than 500 times. [Ed. note: at this time, only one paper has actually been retracted]

Continue reading Heart journal issues expression of concern after fraud report

SfN journal retracts paper, bans UPenn researchers over “data misrepresentation”

journal of neuroscienceThe Journal of Neuroscience has yanked an Alzheimer’s paper and banned three University of Pennsylvania authors from publishing there temporarily, following conflicting investigations by the university and the publisher, the Society for Neuroscience, into the data.

The 2011 paper looked into the cellular makeup of the characteristic plaques that develop in the brains of people with Alzheimer’s disease. It’s been cited 64 times, according to Thomson Scientific’s Web of Knowledge.

While the notice states that Penn’s investigation “supports the journal’s findings of data misrepresentation,” last author Virginia Lee said she asked the journal to simply issue a correction of the faulty data, since the findings are “extremely important” for the field and have been affirmed by a later paper. According to author John Trojanowski (who is married to and publishes regularly with Lee), he and Lee have been barred from publishing in Journal for Neuroscience for several years. Senior Co-author Edward Lee is out for a year [see update at the bottom of this post].

Lee provided us with a letter Vice Dean of Research Glen Gaulton sent to the journal (click here to read), in which he says an investigation found “no evidence of research misconduct” and the “errors…do not detract from or otherwise alter the conclusions of the manuscript.”

Continue reading SfN journal retracts paper, bans UPenn researchers over “data misrepresentation”

Prominent geneticist David Latchman’s group notches second retraction

j cell scienceA team of researchers whose work is under investigation by University College London has retracted a second paper.

Three of the 11 authors of the 2005 Journal of Cell Science paper being retracted — David Latchman, Richard Knight, and Anastasis Stephanou — were authors of a Journal of Biological Chemistry paper retracted in January. Stephanou takes the blame for the “errors” which felled the Journal of Cell Science paper, about how a tumor suppressor responds to DNA damage.

Here’s the notice for “STAT-1 facilitates the ATM activated checkpoint pathway following DNA damage:” Continue reading Prominent geneticist David Latchman’s group notches second retraction

Several chem journals neutralize papers from Brazil group over figure fraud

quimica novaSeveral journals have retracted or corrected papers from a group at State University of Maringá in Brazil over what one chemistry journal calls “fraudulent use” of figures previously published by the authors.

Química Nova, which is retracting a 2013 paper, issued a notice that taps an additional eight articles with Angelica Lazarin as the corresponding author that reused figures. Specifically, the papers included images “where same trace on the figure was assigned to different conditions and/or compounds.”

A number of the papers mentioned in the Química Nova notice were co-authored by Claudio Airoldi, whose group retracted 11 papers in 2011 following concerns over fraudulent nuclear magnetic resonance images.

Continue reading Several chem journals neutralize papers from Brazil group over figure fraud

Danish high court clears Pedersen in misconduct case

bkp_portrait
Klarlund Pedersen

Lawyers one, scientists nil.

Danish judges have overruled scientists in that nation, concluding that a panel of experts erred in finding that physiologist Bente Klarlund Pedersen, of the University of Copenhagen, was guilty of misconduct.

Last September, Pedersen announced that she would fight the ruling of the Danish Committees on Scientific Dishonesty (DCSD, Danish acronym UVVU), which had said she had committed misconduct in four of 12 articles it had examined.

As we reported then, Pedersen’s case is tied to that of another Copenhagen scientist, Milena Penkowa, with whom she had collaborated and who also has been found guilty of scientific misdeeds. (The new ruling does not address Penkowa.) Continue reading Danish high court clears Pedersen in misconduct case