IL17A and colorectal carcinoma: In CRC, as shown in Table 6, strong positive correlations were revealed between HPV infection and activated Stat3 levels (r = 0.38, P<0.01); between HPV infection and IL-17 levels (r = 0.33, P<0.01); and between p-Stat3 and IL-17 levels (r = 0.44, P<0.01).