In triple-negative carcinomas, when the lowest quartile was used a as cut-off point (6% and 5.5% for tTILs-TIM-3+ and sTILs-TIM-3+, respectively), the Kaplan–Meier analysis showed that the presence of tTILs-TIM-3+ and sTILs-TIM-3+ in feline mammary carcinomas is a prognostic factor for DFS and OS. This evidence concerns the gene HAVCR2 and breast carcinoma.