In order to verify whether this effect of SARS-CoV-2 on the expression of E-cad adherens junctions proteins is specific to the Caco-2 cell line or more generally affects the cells of the intestinal epithelium, the experiment was reproduced using the mucin-producing human colorectal adenocarcinoma HT29 cell line. The gene discussed is MUC5AC; the disease is colorectal adenocarcinoma.