On the other hand, the negative connection between TGF-β1 expression in HCC cohorts with γδ T cells (Figure 8) may indicate that highly expressed TGF-β1 reduce the number of γδ T cells or suppress the activity of γδ T cells, resulting in more frequent recurrence in HCC patients and poor prognosis (38). The gene discussed is TGFB1; the disease is hepatocellular carcinoma.