FGD5-AS1 can be used as a sponge of miR-196a-5p to upregulate SMAD6, inhibit SMAD1/5/8 phosphorylation, and participate in the TGF-β signaling pathway, thereby inducing the role of the BMP axis in the EMT process of gastric cancer cells [32]. Here, SMAD6 is linked to gastric cancer.