HIF1A and esophageal squamous cell carcinoma: The Cancer Genome Atlas (TCGA), Cancer Cell Line Encyclopedia (CCLE), and Sequence-based RNA Adenosine Methylation Site Predictor (SRAMP) databases were used to evaluate the expression of OTUD7B in ESCC and its correlation with methyltransferase-like 14 (METTL14) and HIF-1α.