IHC data showed that our results were similar to those of Jiang et al., where the authors investigated 43 resected LELC patients and concluded that the tumor is typically positive for CK, CK5/6, and P63, which suggests squamous cell lineage, but is negative for TTF-1 and CK7 (25) (Supplementary Table S3). This evidence concerns the gene TTF1 and neoplasm.