Retraction: Anthracycline chemotherapy inhibits HIF-1 transcriptional activity and tumor-induced mobilization of circulating angiogenic cells (Proceedings of the National Academy of Sciences of the United States of America (2009) 106 (2353-2358) DOI: 10.1073/pnas.0812801106)

Retraction for “Anthracycline chemotherapy inhibits HIF-1 transcriptional activity and tumor-induced mobilization of circulating angiogenic cells,” by KangAe Lee, David Z. Qian, Sergio Rey, Hong Wei, Jun O. Liu, and Gregg L. Semenza, which was first published February 17, 2009; 10.1073/pnas.0812801106 (Proc. Natl. Acad. Sci. U.S.A. 106, 2353-2358). The undersigned authors note, “We are retracting this article due to concerns with Figure 2. There is a concern of possible duplication and reflection of the bands in the VEGF Promoter input panel between the left and right halves of the panel. We believe that the overall conclusions of the paper remain valid, but we are retracting the work due to this underlying concern about the figure. Confirmatory experimentation has now been performed and the results can be found in a preprint article posted on bioRxiv, 'Daily administration of low-dose daunorubicin or doxorubicin inhibits hypoxia-inducible factor 1 and tumor vascularization' (https://doi.org/10.1101/2022.06.15.492526). We apologize for the inconvenience”.