A study by Wang and colleagues [11] investigating the histopathology of nasal polyps in CRSwNP patients has demonstrated that although myofibroblasts were more abundant in the pedicle region of the nasal polyps than in the central and tip areas of CRSwNP, these were localized with TGF-β in all regions. This evidence concerns the gene TGFB1 and nasal cavity polyp.