REEP1 and extranodal nasal NK/T cell lymphoma: In order to validate the possible key genes which screened from WGCNA, we explored the top 10 genes, namely, LMO3, PEG3, ASB9, GRB14, REEP1, SLC30A3, LY6K, TMEM59L, and LDHAL6B, in GEO database with the ID GSE69406, which contains three control cell line samples and five NKTCL samples.