If the reasoning in the OP is right, then one might infer that the evening is the right time to take it. The goal of cancer immunotherapy is to convince your body to treat the cancer as harmful. The goal of allergy immunotherapy is to convince your body to tolerate allergens. If you are more likely to consider antigens harmful in the morning and tolerable in the evening, then evening is better.
As a giant confounding effect, it seems that allergy immunotherapy might work, at least in part, by convincing your body to make large amounts of IgG antibodies to the allergen, and IgG antibodies are in the “kill it but don’t sneeze at it” category, which isn’t same thing as having your T cell population tolerate the antigen.
As a giant confounding effect, it seems that allergy immunotherapy might work, at least in part, by convincing your body to make large amounts of IgG antibodies to the allergen, and IgG antibodies are in the “kill it but don’t sneeze at it” category, which isn’t same thing as having your T cell population tolerate the antigen.