Concerns are being raised about the validity of research done by a Duke University cancer scientist who recently was placed on leave while the school investigates whether he falsely claimed to be a Rhodes scholar. The editor of a British journal, Lancet Oncology, issued an "expression of concern" Friday, citing a December 2007 study it published from Dr. Anil Potti and others. The study described gene patterns that might help predict a breast cancer patient's response to chemotherapy. The journal said two of Potti's co-authors had contacted them this week on behalf of 15 European scientists involved in the study with "grave concerns about the validity of their report."
