We explored the link between MAGEA3 expression and various immune markers in GC through the TIMER and TISIB databases, which included 28 TILs, immune stimulatory or inhibitory genes (including immune checkpoint gene sets), chemokine, chemokine receptors, and MHC genes (Table 1; Supplementary Tables S1, S2; Supplementary Figure S2). The gene discussed is HLA-C; the disease is gastric cancer.