CSAD and hepatocellular carcinoma: In hepatocellular carcinoma (HCC), METTL14 was identified to be involved in the malignant progression of HCC by regulating m6A downstream targets, including cysteine sulfinic acid decarboxylase (CSAD), glutamic- oxaloacetic transaminase 2 (GOT2), and suppressor of cytokine signaling 2 (SOCS2) (Li et al. 2020).