FAP and gastric cancer: <h4>Background</h4>This study sought to examine the expression levels and clinical relevance of fibroblast activation protein alpha (FAP), caveolin-1 (CAV1), and carboxypeptidase X member 2 (CPXM2) in gastric cancer (GC) and adjacent tissues.<h4>Methods</h4>Multiplex immunofluorescence (mIF) was performed on tissue microarrays to evaluate the expression of FAP, CAV1, CPXM2, and cytokeratin (CK) in GC specimens.