POSTN and congenital rubella syndrome: Via a cross-sectional study, they examined the relationship between mucus remodeling defined by basement membrane thickening (BMT over 7.5 μm) and subepithelial fibrosis and tissue eosinophilia, and their results showed stronger grade of periostin expression was positively correlated with the presence pf BMT, fibrosis and tissue eosinophila in CRS patients [48].