IL21 and neoplasm: However, there was no significant rank-correlation between CD3+ T cells and IL21+ cells (rs = 0.013, p = 0.856), and only a weak correlation between CD3+ and IL26+ cells (rs = 0.246, p = 0.001), in line with the fact that although all T cell are CD3 positive, only a distinct population of these cells produce the tumor-promoting cytokines IL21 and IL26.