HIF1A and esophageal squamous cell carcinoma: Moreover, the expression of HIF‐1α and lnc191 was significantly and positively correlated in our Cohort 2 of ESCC (R = 0.4583, p < 0.001) (Figure 1G) and GEPIA data (R = 0.26, p < 0.001) (Figure S2A, Supporting Information).