FFAR2 and cancer: To this end, we reexamined a data set in which we previously analyzed gene expression in human CRC tissues from The Cancer Genome Atlas Colon Adenocarcinoma data collection (TCGA-COAD)41 as it correlates with fusobacterial abundance.1 We first looked at FFAR2 and observed significant correlation between its expression and intratumoral fusobacterial abundance (Figure 5c).