SLC5A5 and testicular germ cell tumor: The SLC5A5 gene, which encodes the NIS protein, exhibits no significant patterns across different tissue types (normal vs. tumor) or cancer stages, but SLC5A5 is highly expressed in three specific cancer types: stomach adenocarcinoma (STAD), testicular germ cell tumor (TGCT), and thyroid carcinoma (THCA) (Figure S6A,B).