IL5RA and asthma: Whether or not the determination of the expression of IL5RA would help predict which patients would respond better to benralizumab makes for an exciting field to explore, and it has already been reviewed in a recent study from our research group, which seems to support this idea in so far as IL5RA expression relates, to some extent, to the response to benralizumab and the improvement of FEV1 and the asthma control test scores (ACT) [34].