AJM1 (apical junction component 1 homolog) is a structural protein that localizes to apical junction complexes and plays critical roles in epithelial integrity and ciliogenesis. The protein functions as a component of the epithelial junction complex, where it physically interacts with other junction proteins like DLG-1 to maintain cell-cell adhesion and barrier function 1. In the context of ciliogenesis, AJM1 is regulated by the scaffolding protein Girdin and appears to anchor basal bodies to the plasma membrane through positioning mechanisms 2. Loss of AJM1 function compromises epithelial junction integrity, reducing intestinal barrier function during bacterial infection and increasing host susceptibility to pathogens 1. AJM1 expression is disrupted during cellular stress responses, including oxidative stress induced by mycotoxin co-exposure 3. Clinically, AJM1 has emerged as a prognostic biomarker in pancreatic adenocarcinoma, where it is associated with immunogenic cell death pathways and immunotherapy responsiveness 4. The protein's structural role in junction organization and its involvement in cell death pathways highlight its importance in maintaining both normal epithelial homeostasis and therapeutic response prediction in cancer.