CD276 and gastric cancer: Mechanistically, B7-H3+ neutrophils have been found in gastric cancer tissues, which increases tumor progression and is a negative predictive marker of reduced survival [94], and a more restricted CD8+ T cell location was noted in B7-H3-high gastric cancer samples, indicating a potential immunosuppressive role of B7-H3 in gastric cancer, although no significant survival difference was observed between the B7-H3-high and B7-H3-low groups in the study [151].