On the other hand, SLC6A20 expressionwas downregulated in glioblastoma multiform (GBM), kidney chromophobe(KICH), kidney renal clear cell carcinoma (KIRC), lung adenocarcinoma(LUAD), and lung squamous carcinoma (LUSC) samples when compared tonormal (Figure 2B).Taken together, these findings indicated that SLC6A20 was predominantly expressed in gastrointestinal tumors, which isone of the most frequently seen sites for SARS-CoV-2 infection incancer patients.14,23,24. This evidence concerns the gene SLC6A20 and lung adenocarcinoma.