The upregulation of circ-ABCB10 was found to promote cell proliferation in various tumors, including esophageal squamous cell carcinoma (Zhang et al., 2020), esophageal cancer (Wang et al., 2020), glioma (Sun et al., 2020), non–small cell lung cancer (Tian et al., 2019), and oral squamous cell carcinoma (Chen et al., 2020). Here, ABCB10 is linked to esophageal squamous cell carcinoma.