RETRACTION: P. Huang, Y. Zhang, F. Wang, M. Qin, J. Ma, J. Ji, D. Wei, and L. Ren, “ MiR-494-3p Aggravates Pirarubicin-Induced Cardiomyocyte Injury by Regulating MDM4/p53 Signaling Pathway,” Environmental Toxicology 38, no. 10 (2023): 2499–2508, https://doi.org/10.1002/tox.23888. The above article, published online on 08 July 2023 in Wiley Online Library (http://onlinelibrary.wiley.com/), has been retracted by agreement between the journal Editor-in-Chief, April Rodd; and Wiley Periodicals LLC.