TNFRSF1B and allergic rhinitis: Further investigation is needed to clarify the propolis signaling cascade, while propolis is the first TNFR2‐inducing substance and its effect on Tregs would be one of the mechanisms explaining the anti‐inflammatory efficacy, such as improving seasonal allergic rhinitis (Takeuchi et al., 2009a, 2009b) and reducing systemic inflammation (Zhu et al., 2018).