LncRNA prostate cancer-associated transcript 1 (PCAT1) was upregulated in cisplatin-resistant GC tissues, exerting tumor-promoting effects by interacting with EZH2 and thus epigenetically silencing phosphatase and tensin homolog deleted on chromosome ten (PTEN), leading to enhanced H3K27 trimethylation (70). Here, PTEN is linked to neoplasm.