FN1 and cancer: Although the study using FFPE tissues by Yan that showed a high rate of Fn detection and significantly worse impact of high loads of Fn on patients’ cancer-specific survival and RFS (39), our study and that of Bundgaard-Nielsen, which examined FFPE colorectal cancer samples, found no impact of Fn infection on OS of patients with colorectal cancer (ref. 41; Supplementary Fig. S3).