IL2 and neoplasm: The anti-tumor immune response cytokine IL-2, which is released by T-helper leucocytes and has no predictive value, was found to be present in higher concentrations in therapy responders, according to the findings of a paper by Iakovou et al that there were evaluated levels of serum cytokines in women with bone metastases receiving radionuclide palliative therapy (RTP).100