In gastric cancer, LncRNA SDCBP2-AS1 blocks the SUMOylation of hnRNPK (heterogeneous nuclear ribonucleoprotein in K) via binding to the KH domain of hnRNPK, which destroys the stability of β-catenin and promotes its degradation, thus inhibiting the growth and migration of gastric cancer cells [21]. Here, SDCBP2 is linked to gastric cancer.