MUC5AC and respiratory system disorder: Since changes concerning the synthesis, secretion or structure of mucins have been linked to gastrointestinal and respiratory disorders, manipulation of mucin may ultimately influence the microbiota and the effectiveness of phage therapy for bacterial imbalances (Carroll-Portillo and Lin, 2021), and the use of a mucolytic agent as an adjuvant of lytic phages could be an interesting therapeutic option to take into consideration.