FASN and cancer: FASN, ACACA, ACLY, and ACSL4 are considered key enzymes in lipid metabolism, and previous studies have shown that they can promote the proliferation of various cancers (Wei et al. 2023; Wang et al. 2010; Khwairakpam et al. 2015; Menendez and Lupu 2007; Quan et al. 2021).