MACC1 and gastric neoplasm: Another lncRNA acting as a ceRNA that affects mRNA stability is MACC1 Antisense RNA 1 (MACC1-AS1), an intronic antisense lncRNA located between the fourth and fifth exon of MACC1, a transcriptional regulator of epithelial-mesenchymal transition (EMT) [55] that enhances gastric tumor progression [56].