Category: pnas retractions

PNAS paper on potential breast cancer treatment retracted

The authors of a 2009 study in the Proceedings of the National Academy of Sciences (PNAS) have retracted the paper, which found a particular molecule could make breast tumors respond to a drug to which they’re not normally susceptible.

The paper — which has been cited five times, according to Thomson Scientific’s Web of Knowledge — was the subject of a fair amount of press coverage, although the molecule is not yet in clinical trials. In a Reuters story, lead author Caroline Ford said of the alleged tamoxifen-sensitizing compound, Foxy-5:

“It flips the switch basically,” Ford said in a telephone interview. “It makes breast cancer cells respond to tamoxifen in women who cannot be treated with the drug,” she added. “If you don’t have that molecule you can’t get tamoxifen because there is no target.”

According to the retraction notice, signed by all three of the study’s authors: Continue reading PNAS paper on potential breast cancer treatment retracted

Nobelist Linda Buck retracts two studies on olfactory networks — and the news is embargoed

Well, it’s happened: The Embargo Watch and Retraction Watch worlds have collided. I had initially figured on two posts here, but it soon became clear that how journals were handling these retractions, using embargoes, was central to both. So this is being cross-posted on both blogs.

Linda Buck, who shared the 2004 Nobel Prize in Physiology or Medicine, has retracted two papers published in 2005 and 2006. Both retractions — one in the Proceedings of the National Academy of Sciences (PNAS) and one in Science — appear online today.

The papers describe how nerves that carry information about scents connect from the nose to the olfactory bulb, where they are processed. They were published after the 2004 Nobel, which was for discoveries “of odorant receptors and the organization of the olfactory system.”

The retractions come two and a half years after Buck retracted a 2001 Nature paper co-authored with Zhihua Zou, a post-doc in her then-Harvard lab. She’s been at the Fred Hutchinson Cancer Research Center since 2002, and is a Howard Hughes Medical Institute investigator. In 2008, Nature’s news section reported:

Harvard Medical School has formed an ad hoc committee to review the retraction, and Buck has asked the Fred Hutchinson Cancer Research Center to review two later publications on which Zou was the lead author. “It’s disappointing of course,” says Buck. “The important thing is to correct the literature.”

The PNAS and Science retractions are of those two later publications. The PNAS study was cited 61 times, and the Science study was cited 73 times, according to the Thomson Scientific Web of Knowledge.

The Science retraction reads: Continue reading Nobelist Linda Buck retracts two studies on olfactory networks — and the news is embargoed

Update on gene therapy researcher Savio Woo retractions: Two post-docs dismissed for fraud

More on the case of Savio Woo, the New York gene therapy researcher who, as Retraction Watch reported  this week, had several papers pulled by noted journals.

Two of Woo’s post-doctoral fellows at Mount Sinai School of Medicine were dismissed for “research misconduct,” said Ian Michaels, a spokesman for the institution. According to Michaels:

When Dr. Savio L C Woo came to suspect that two post-doctoral fellows in his laboratory may have engaged in research misconduct he notified the Mount Sinai Research Integrity Office. Mount Sinai immediately initiated institutional reviews that resulted in both post-doctoral fellows being dismissed for research misconduct. At no time were there allegations that Dr. Woo had engaged in research misconduct. As part of its review, the investigation committee looked into this possibility and confirmed that no research misconduct could be attributed to Dr. Woo, who voluntarily retracted the papers regarding the research in question. Mount Sinai reported the results of its investigations to the appropriate government agencies and continues to cooperate with them as part of its commitment to adhere to the highest standards for research integrity.

We have plenty of other questions for Mount Sinai about the details of the investigation—including when the post-docs were let go, which Michaels declined to answer—and will update when we learn more.

Work from noted gene therapy researcher Savio Woo under scrutiny with slew of retractions

Research from the lab of Savio Woo, a leading U.S. gene therapy scientist, has come into question with the retraction by major journals of at least four of his articles.

The papers, which appeared in the Proceedings of the National Academy of Sciences, the Journal of the National Cancer Institute and Human Gene Therapy, involve findings published between 2005 and 2009, address various aspect of gene therapy. Two of the articles boasted of potential breakthroughs, and even a possible cure, for diseases with extremely high rates of mortality.

The study in JNCI, for example, reported the finding of a genetically modified bacterium that showed promise for the treatment of pancreatic cancer, a particularly lethal malignancy, and other tumor types. Another, published in 2005 in PNAS, claimed to have discovered a possible cure for phenylketonuria, or PKU, in mice—a finding that was cited more than 30 times and trumpeted in the media.

However, in a retraction notice issued this month, Woo wrote that: Continue reading Work from noted gene therapy researcher Savio Woo under scrutiny with slew of retractions

2005 PNAS Arabidopsis cold sensitivity gene paper retracted

There’s a retraction this week from the Proceedings of the National Academy of Sciences of a paper that first appeared online on July 1, 2005 (and which is still available, but notes under “this article” that “a retraction has been published”). The paper reports on a study that allegedly found a gene that made Arabidopsis plants — a favorite model of molecular biologists — “extremely sensitive to freezing temperatures, completely unable to acclimate to the cold,” and very sensitive to salt.

In other words, the Arabidopsis version of our relatives in Florida.

From the retraction:
Continue reading 2005 PNAS Arabidopsis cold sensitivity gene paper retracted