The densities of CD8+ and CD4+ iTILs were significantly higher in HGSC than in other histological subtypes (clear cell, endometrioid, and mucinous carcinoma) (p = 0.025 and p = 0.002, respectively); however, no significant differences were observed in cTILs (p = 0.396 and p = 0.582, respectively) or sTILs (p = 0.208 and p = 0.108, respectively). The gene discussed is CD8A; the disease is mucinous adenocarcinoma.