For instance, cachectic cytokines such as tumour necrosis factor-α (TNF-α), interferon-γ (IFN-γ), and different interleukins (ILs., e.g. IL-1β and IL-6) may be increased in the peripheral circulation of cancer patients and induce cancer cachexia [1, 2, 5]. This evidence concerns the gene IL6 and cancer.