From our current understanding of the IgE molecule, permanently removing IgE will result in a weaker immune system and can be theorised to disrupt parasitic immunity as well as viral, bacterial, and possibly cancer immunity as reported by [56] where side effects of administering Omalizumab included parasitosis (Giardiasis) in one out of 19 patients in the cohort. Here, IGHE is linked to giardiasis.