NFKB1 and cancer: Our current findings demonstrate that, among the analysed miRNA markers, miR‐21 and miR‐375 are the most affected by the NF‐κB inhibitor, underscoring the role of activated NF‐κB with miR‐21 and miR‐375, in promoting acidic bile‐induced cancer‐related molecular alterations in hypopharyngeal cells.