Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘molecular biology’ Category

Stem cell scientist appealing dismissal loses another paper

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Susana Gonzalez

A once-prominent stem cell biologist, who recently lost both her job and a sizable grant, has lost her fifth paper.

Recently, Molecular and Cellular Biology retracted a 2003 paper by Susana Gonzalez. Last February, the National Center for Cardiovascular Research (CNIC) in Spain dismissed her from her position over allegations of misconduct. The reason: suspicions of data manipulation.

As with a previous retraction, the journal said Gonzalez “could not be reached for approval of this retraction.”  

Here’s the full notice:

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Project to “fact check” genetic studies leads to three more retractions. And it’s just getting started.

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Jennifer Byrne

A project to identify studies doomed by problematic reagents has triggered three more retractions, bringing the total to five.

Jennifer Byrne, a scientist at the University of Sydney, who developed the the idea of double-checking the nucleic acid sequences of research materials — thereby ensuring studies were testing the gene in question — told Retraction Watch that all three retractions came after she started emailing journals in January  to alert them to the problems: Read the rest of this entry »

Two more retractions for former US prof who altered dozens of images

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Two journals have retracted papers by a biologist who was recently found guilty of misconduct by his former employer, the University of Colorado Denver, bringing the total to five.

The investigation report by UC Denver, which we obtained earlier this year via a public records request, had recommended one of the two newest retractions, which appears in the journal Hepatology. The other retraction, in the Journal of Immunology, was not flagged by the report — which found, among other conclusions, that Almut Grenz had altered multiple values in research that had already been submitted for peer review.

Here’s the notice for the Journal of Immunology paper:

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“The paper is extremely flawed:” Journal retracts article linked to vaccines

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A journal has retracted a 2016 paper after receiving criticism from outside researchers who raised concerns about its methodology and data.

The paper shares multiple authors with another paper that linked the vaccine for human papillomavirus (HPV) to behavioral problems in mice. Last year, a journal removed the study; later that year, the authors published a revised version in another journal. The latest retracted paper focuses on the antibodies present in a form of lupus.

Yehuda Shoenfeld at Tel-Aviv University in Israel, the corresponding author on both this latest retraction and the HPV vaccine paper, recently edited a textbook that explored how vaccines can induce autoimmunity in some people.  He told us the 2016 lupus paper does have a link to vaccines [his emphasis]:

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Journal corrects paper by researcher sanctioned for misconduct

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A biology journal has issued a correction to a 2014 paper by a researcher with 11 retractions, citing “inadvertent errors” that don’t affect the conclusions.

The researcher, Rony Seger, was recently sanctioned by his institution (The Weizmann Institute in Israel) following a finding of “serious misconduct” involving data manipulation. Specifically, the institute barred him from supervising graduate students, even future ones; his lab is now dedicated to replicating his previous work, with the help of a technician.

Last month, Michal Neeman, vice president of The Weizmann Institute of Science, told us she wasn’t sure how many additional papers by Seger would need to be retracted or corrected.

Recently, one more was revealed — in the August issue of Molecular and Cellular Biology, the following correction notice appears:

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Scientist steps down from South Korea government position over criticism of her role in stem cell scandal

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A professor at Sunchon National University has resigned from a prominent government position in South Korea after facing heavy criticism for being a co-author of a fraudulent stem cell paper.

Earlier this week, President Moon Jae-in appointed Park Ky-young to run a newly created Science, Technology and Innovation Office at the Ministry of Science and ICT. Critics quickly cried foul, noting that Park co-authored one of the stem cell papers by Woo-Suk Hwang, which made headlines 10 years ago after an investigation revealed the supposedly groundbreaking research had been fabricated.

According to the Korea Herald, Park’s position would have given her a say over the country’s R&D budget, worth 20 trillion won ($17 billion USD) in the science sector. The appointment does not require approval from parliament.

Today, Park agreed to step down. In a written statement, she said:

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Written by Alison McCook

August 11th, 2017 at 8:30 am

Third retraction for former rising star found guilty of misconduct

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A once-prominent researcher in the field of infectious disease — who was found guilty of misconduct last year— has had a third paper retracted, a 2006 article in PNAS.

Last year, the University of Dundee in Scotland found that Robert Ryan had committed research misconduct, which included misrepresenting clinical data and duplicating images in a dozen different publications. After a failed attempt to appeal the decision, Ryan resigned.

In April, we covered Ryan’s first two retractions – a 2012 paper in Molecular Microbiology, which cited image errors, and a 2011 paper in Journal of Bacteriology, which cited image duplication.

Now, PNAS has retracted a 2006 paper, which cites potential image duplication as well as “irregularities” in the data.

Here’s the retraction notice for “Cell–cell signaling in Xanthomonas campestris involves an HD-GYP domain protein that functions in cyclic di-GMP turnover:”

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After investigation that started at least 5 years ago, retired ob-gyn prof agrees to 5 years of supervision

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Nasser Chegini

A now-retired professor tweaked the findings in seven figures of a 2007 paper, according to a new finding of misconduct released yesterday by the U.S. Office of Research Integrity.

The subject of the findings isn’t a stranger to our readers: We’ve already reported on nine retractions for Nasser Chegini, a former professor of obstetrics and gynecology at the University of Florida (UF) who had won more than $4 million in Federal grants. And Chegini, who retired in early 2012, had been under investigation since at least 2012, with the ORI asking UF to broaden that investigation at one point.

Indeed, the ORI’s notice states that eight of Chegini’s retractions resulted from the UF’s investigation. The ORI’s findings, however, stem from another paper, published in the Journal of Reproductive Immunology, which has not been retracted.

According to the ORI, in that paper, Chegini:

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Why did it take a journal two years to retract a paper after a misconduct finding?

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A 2014 paper containing data manipulated by a former graduate student has finally been retracted, two years after the U.S. Office of Research Integrity (ORI) published its findings.

In August 2015, the ORI published a report that Peter Littlefield, who was working on his PhD at the University of California, San Francisco (UCSF), had committed “research misconduct by falsifying and/or fabricating data” in two papers. Littlefield agreed to correct or retract the papers–one published in Chemistry & Biology and the other in Science Signaling.  

When we contacted Chemistry & Biology back in August 2015, a spokesperson for Cell Press told us the journal was figuring out “the best way to correct the scientific record.”

Apparently that took two years. In the meantime, the journal did not issue an expression of concern or otherwise notify readers of the issues. Read the rest of this entry »

Nature retracts paper by stem cell scientist appealing her dismissal

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Susana Gonzalez

A once-rising star in stem cell biology — who recently lost both her job and a sizable grant — has had a fourth paper retracted.

The notice — issued by Nature for a 2006 letter — cites duplicated images, and a lack of raw data to verify the findings. First author Susana Gonzalez — who was dismissed from her position at the National Center for Cardiovascular Research (CNIC) in Spain last February over allegations of misconduct — couldn’t be reached by the journal.

Here’s the full text of the retraction notice:

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