It is also used to deliver allergen specific immunotherapy to treat several IgE-mediated food allergies and is being implemented in cancer therapies for melanoma treatments, where Interleukin-2 (IL-2) is injected onto the cutaneous lesion (Byers et al., 2014; Senti and Kündig, 2016; Sloot et al., 2016). The gene discussed is IL2; the disease is melanoma.