FAP and neoplasm: We then analyzed the correlation between COL10A1/FAP/FN1 and tumor immune cells, and the outcomes showed that FAP had significant positive correlations with macrophages, Th1 cells, neutrophils, iDC, Tgd, TReg, mast cells, and NK cells (Fig. 6D, R > 0.4, P < 0.001).