KIAA1217 shows different splicing in esophageal squamous cell carcinoma (Ding et al., 2021) and intron retention of KIAA1217 has been found in non-small cell lung cancer, but it is not supported by results of RT-PCR (Langer et al., 2010). This evidence concerns the gene KIAA1217 and esophageal squamous cell carcinoma.