A review article by Shimizu et al, A02, has been published.

M. Ibrahim, E. Ramadan, N. Elsadek, S. Emam, T. Shimizu, H. Ando, Y. Ishima, O. Elgarhy, H. Sarhan, A. Hussein, T. Ishida, Polyethylene glycol (PEG): The nature, immunogenicity, and role in the hypersensitivity of PEGylated products. J. Control. Release. 351, 215-230 (2022)
https://www.sciencedirect.com/science/article/pii/S0168365922006265