CCL7 and cancer: We found that Fap2+ strains from Fusobacteriota have a propensity to harbor Fic family genes as compared to those from other cancer-associated taxa (Fig. 1c; Wilcoxon’s rank-sum test, Fap2+ Fusobacteriota vs all, q = 9.34 × 10−56 ~ 5.78 × 10−3).