I am writing this letter in support of Dr. Soldano Ferrone's withdrawal of the paper entitled, “Induction of HLA-G expression in a melanoma cell line OCM-1A following the treatment with 5-aza-2′-deoxycytidine”, published in Cell Research July 2005 issue, 15(7):523–531, by Wei Hua Yan, Ai Fen Lin, myself and Soldano Ferrone. I had never seen the content of the paper before it appeared on the PubMed webpage.

Dr. Yan was under my direction while he stayed in Dr. Ferrone's laboratory. Dr. Yan did not design any of the experiments from which the results were published in the paper, nor did he intellectually contribute to the interpretation and discussion of the data. The manuscript was intentionally submitted by Dr. Yan without the approval of myself and Dr. Ferrone, indicating the unethical nature of his behavior. In this regard, I request an immediate retraction of the paper.