To further elucidate the underlying mechanism by which TCF7 promotes LF fibrosis, the TRRUST ver.7.3 (https://www.grnpedia.org/trrust/result.php) database and JASPAR database (https://jaspar.genereg.net/search?advanced=true) were used to predict the promoters of the SNAI2 genes. Here, TCF7 is linked to Lassa fever.