IL6 and fibrosarcoma: Various cytokines have been associated with γδ17 T cell accumulation in different tumor models: IL‐1β in breast and lung metastasis [21, 25], IL‐6 in pancreatic cancer [26], IL‐1β plus IL‐23 in hepatocellular carcinoma [20], IL‐6/IL‐23/TGF‐β in fibrosarcoma and skin carcinoma [27], and IL‐1β / IL‐6 /IL‐7 in ovarian cancer [23] models.