FOXD3 and nasopharyngeal carcinoma: Therefore, based on the hints from the GSE datasets (GSE61218 and GSE126683), we verified that the expression of FOXD3-AS1 in NPC cell lines was consistent with the datasets by real-time reverse transcription quantitative PCR (RT-qPCR) assays, then the relationship between the expression level and the biological behavior of nasopharyngeal carcinoma was studied further.