RETRACTION: Y. Tian, W. Han, L. Fu, K. Lv, and X. Zhou, “ Silencing of IGHG1 Reverses the Resistance of Pancreatic Cancer to Multidrug Chemotherapy by Modulating Autophagy,” Environmental Toxicology 38, no. 8 (2023): 1835–1845, https://doi.org/10.1002/tox.23810. The above article, published online on 26 April 2023 in Wiley Online Library (http://onlinelibrary.wiley.com/), has been retracted by agreement between the journal Editor-in-Chief, April Rodd; and Wiley Periodicals LLC.