N‐acetyl‐cysteine can prevent JNK phosphorylation in human gastric carcinoma MKN45 cells (Guo et al., 2016) and can reverse the overexpression of p38‐associated pathways in vascular endothelial cells (Bhattacharya, Halder, Mukhopadhyay, & Giri, 2009) and human melanoma cells (Bell et al., 2010). Here, MAPK8 is linked to gastric carcinoma.