KL and hepatocellular carcinoma: A multi-omics study on nine PTMs (phosphorylation, acetylation, crotonylation, ubiquitination, lactylation, N-glycosylation, succinylation, malonylation, and β-hydroxybutyrylation) in hepatocellular carcinoma (HCC) further revealed the distribution patterns, modification preferences, and potential interactions between Kla and other acylations, providing a foundation for investigating PTM crosstalk [61].