found that SM inhibited the transcriptional regulation of Transcription factor activating enhancer binding protein 2 alpha (TFAP2A) to OTU domain, ubiquitin aldehyde binding 1 (OTUB1) in human pancreatic cancer cells (PANC‐1 and CFPAC‐1), which in turn inhibited the deubiquitination of SLC7A11 proteins by OTUB1, induced SLC7A11 degradation, activating iron death and inhibiting pancreatic cancer cell progression. Here, OTUB1 is linked to pancreatic neoplasm.