ACTA1 and neoplasm: Furthermore, the tumor with better efficacy is infiltrated with less fibroblasts, including α-SMA (mean: 0.174 vs 2.412, p = 0.314), FAP (mean: 0.546 vs. 1.677, p = 0.393), FSP (mean:0.695 vs. 4.078, p = 0.201).