Category: clinical study retractions

A shadow was cast on a bone researcher’s work. What are journals doing about his papers?

Last year, a researcher cast doubt on a bone scientist’s clinical trials, suggesting some of the findings may not be legitimate. So what’s happened since?

Since 2015, journals have retracted 14 papers by bone researcher Yoshihiro Sato, based at Mitate Hospital in Japan, for issues ranging from self-plagiarism, to problems with data, to including co-authors without their consent. (We covered the latest two retractions this week.) Last year’s analysis identified patterns in more than 30 of Sato’s clinical trials that suggest systematic problems with the results. (Sato has defended his research.)

With doubts cast on Sato’s body of work, we contacted the journals that have published his papers involving human trials, to see if any taken another look at Sato’s work; several responded. While most believe there is little reason to take further action at this time, some told us they are investigating.
Continue reading A shadow was cast on a bone researcher’s work. What are journals doing about his papers?

Harvard diabetes researcher retracts third paper

A prominent diabetes researcher based at Harvard Medical School has retracted a third paper, citing manipulation of multiple figures.

Late last year, Carl Ronald Kahn—also chief academic officer at Joslin Diabetes Center—retracted two papers for similar reasons. In November, Kahn pulled a 2005 paper from The Journal of Clinical Investigation (JCI) and a month later, he retracted a 2003 paper from The Journal of Biological Chemistry (JBC), both times citing duplications that the authors said were introduced while assembling the figures.

Last month, Kahn retracted his third paper, also published in JBC in 2003, because the authors omitted data when constructing the images. Still, the authors remain confident in their findings, given that data from other labs “have confirmed and extended the conclusions of the manuscript.”

Here’s the retraction notice: Continue reading Harvard diabetes researcher retracts third paper

“Think of the unthinkable:” JAMA retraction prompts author to urge others to share data

A few months ago, a researcher told Evelien Oostdijk there might be a problem with a 2014 JAMA study she had co-authored.

The study had compared two methods of preventing infection in the intensive care unit (ICU). But a separate analysis had produced different results.

Oostdijk, from the University Medical Center Utrecht in The Netherlands, immediately got to work to try to figure out what was going on. And she soon discovered the problem: The coding for the two interventions had been reversed at one of the 16 ICUs. This switch had “a major impact on the study outcome,” last author Marc Bonten, also from the University Medical Center Utrecht, wrote in a blog post about the experience yesterday, because it occurred at “one of the largest participating ICUs.”

When Oostdijk and a researcher not involved in the study analyzed the data again, they discovered a notable difference between the revised and original findings: The new analysis revealed that one of the interventions had a small but significant survival benefit over the other.

Oostdijk and Bonten, who supervised the re-analysis, notified their colleagues of the revised study outcomes and contacted the journal requesting a retraction and replacement, which was published yesterday in JAMA.

According to the notice of retraction and replacement:

Continue reading “Think of the unthinkable:” JAMA retraction prompts author to urge others to share data

Fraud by bone researcher takes down two meta-analyses, a clinical trial, and review

The troubles continue for a bone researcher, who’s lost multiple papers in recent months due to problems ranging from data issues to including authors without their consent.

Now, journals have retracted two more papers by Yoshihiro Sato. And in a sign of the downstream effects that fraud can have, another journal has retracted two meta-analyses by other authors that cited his work.

Earlier this month, the journal Current Medical Research and Opinion retracted the two meta-analyses because they were based on recently retracted papers by Sato, affiliated with Mitate Hospital. The two new retractions of Sato’s papers are a review and a randomized controlled trial.

Sato was not an author on the meta-analyses published in 2008 and 2011; he was, however, first and lead author on all the retracted papers referenced in the notices. The notices state that the trio of authors on the meta-analyses:

Continue reading Fraud by bone researcher takes down two meta-analyses, a clinical trial, and review

Three figures in blood pressure paper were manipulated, says journal

A pharmacology journal has retracted a 2011 paper after concluding images in three figures had been manipulated.

According to the British Journal of Pharmacology, four of the five authors claim they played no role in the manipulation. There is no comment from the remaining author, first author Ian Morecroft, a research associate at the University of Glasgow.

Here’s more from the notice, which says an investigation at the University of Glasgow is ongoing:

Continue reading Three figures in blood pressure paper were manipulated, says journal

A diabetes researcher sued his former employer for defamation. Here’s the story.

Franck Mauvais-Jarvis

The last decade hasn’t exactly been drama-free for Franck Mauvais-Jarvis, head of the Diabetes Research Program at Tulane University.

After being accused of falsifying three figures in a submitted manuscript, Mauvais-Jarvis sued his accusers and officials at his former employer — Northwestern University — for defamation and conspiracy in 2011.

In 2014, a judge dismissed the suit. We wish we could tell you more details about it—such as what the university’s misconduct investigation found, or how the lawsuit was concluded—but they remain shrouded in mystery. What we know is based on court records from the lawsuit, which we recently obtained through an unrelated public records request. Even without all the details, it’s a long, sordid tale, involving a lot of finger-pointing and allegations of misconduct.

In 2008, a former research technician in the lab of Mauvais-Jarvis, then an associate professor of medicine at Northwestern University, raised concerns of fabrication in two figures in a paper on the regulation of insulin synthesis that had been submitted the Journal of Biological Chemistry. An inquiry committee at the university unanimously concluded that research misconduct charges against Mauvais-Jarvis were not credible.

But then a third figure in the manuscript was found to be “inaccurate,” and the university initiated a second inquiry. That’s when Mauvais-Jarvis — whose papers have been cited more than 2,000 times, according to Clarivate Analytics’ Web of Science, formerly part of Thomson Reuters — initiated a lawsuit. Continue reading A diabetes researcher sued his former employer for defamation. Here’s the story.

First retraction appears for embattled food researcher Brian Wansink

Brian Wansink

Earlier this month, a high-profile food researcher who’s recently come under fire announced a journal was retracting one of his papers for duplication. Today, a retraction appeared — for a 2002 study which contained “major overlap,” according to the journal.

The Journal of Sensory Studies has retracted a paper by Cornell’s Brian Wansink about how labeling of foods can affect how they taste, after determining it borrowed too heavily from a 2000 paper. Wansink is the first author on both studies.

Here’s more from the retraction notice:

Continue reading First retraction appears for embattled food researcher Brian Wansink

Busted: Researcher used fake contact info for co-authors

In February, Lusine Abrahamyan, an assistant professor at the University of Toronto, was contacted by ResearchGate. Her name was listed on a 2016 paper in a heart journal, the site told her — was Abrahamyan indeed a co-author?

Um, no, she was not. In fact, before that moment, she didn’t know such a paper existed.

It turns out, Abrahamyan had supervised the thesis of the first author — who, she soon learned, had also published an identical paper in another heart journal. Both have since been retracted.

How did this happen?

International Cardiovascular Forum Journal editor Andrew Coats told us more about the actions of first author Joshua Chadwick Jayaraj: Continue reading Busted: Researcher used fake contact info for co-authors

Cornell finds mistakes — not misconduct — in papers by high-profile nutrition researcher

Brian Wansink

An internal review by Cornell University has concluded that a high-profile researcher whose work has been under fire made numerous mistakes in his work, but did not commit misconduct.

In response, the researcher — Brian Wansink — announced that he has submitted four errata to the journals that published the work in question. Since the initial allegations about the four papers, other researchers have raised numerous questions about additional papers that appear to contain duplicated material. Wansink noted that he has contacted the six journals that published that work, and was told one paper is being retracted.

Here’s the statement from Cornell about its initial probe:

Continue reading Cornell finds mistakes — not misconduct — in papers by high-profile nutrition researcher

Hello…Newman: Yet another sting pranks a predatory journal, Seinfeld-style

John McCool

Starting to get bored of stings designed to expose the well-documented flaws in scientific publishing? Yeah, sometimes we are too. But another one just came across our desks, and we couldn’t help ourselves.

John McCool is neither a researcher nor a urologist. When received an unsolicited invitation to submit a paper to an open-access urology journal, however, he just couldn’t resist: He is the owner of a freelance scientific editing company, and has long been concerned about so-called predatory journals, which often publish sub-par papers as long as authors pay. And he loves the TV show “Seinfeld.”

Like many others before him, McCool decided to punk the journal by submitting a fake paper. He told us:

Continue reading Hello…Newman: Yet another sting pranks a predatory journal, Seinfeld-style