TGFB1 and neoplasm: As shown in Table 2, the pre-CRT TGF-β1 level was not related to clinical T stage (p = 0.464), clinical N stage (p = 0.253), stage groupings (p = 0.348), tumor site (p = 0.621), age (p = 0.345), or best overall response registered (p = 0.914).