Without “confidence in the conclusions,” group retracts prostate cancer paper

Back in January, we wrote about the retraction of a paper in the International Journal of Radiation Oncology *Biology* Physics, the first from that journal in its 38-year history.

At the time, the journal’s new editor, Anthony Zietman, of Mass General, told us that he was working on a second retraction. That one has arrived.

The paper, “High-Dose Conformal Radiotherapy Reduces Prostate Cancer–Specific Mortality: Results of a Meta-analysis,” came from a team of radiation oncologists in Brazil, and was published last August.

According to the retraction notice:

“Extensive” errors force retraction of lymphoma radiation paper

A group of researchers from Mexico has been forced to retract their July 2012 paper in the International Journal of Radiation Oncology *Biology*Physics after a reader noticed cracks in the data that proved to be signs of fatal instability.

Here’s the retraction notice for the article, titled, “Randomized Clinical Trial to Assess the Efficacy of Radiotherapy in Primary Mediastinal Large B-Lymphoma”: