lncAKR1C2 is an exosomal lncRNA secreted from gastric cancer cells, and it encodes a micropeptide pep-AKR1C2, which is produced in lymphatic endothelial cells and promotes lymph node metastasis by gastric cancer cells by modulating YAP phosphorylation and increased fatty acid β-oxidation [70]. The gene discussed is AKR1C2; the disease is gastric cancer.