Sample - n = 25 (15 OSCC and 10 fibro epithelial hyperplasia) Myofibroblasts differentiation is commonly seen in the stroma of OSCC (11), particularly at the invasive front of the tumor, no a SMA positive myofibroblast in the connective tissue of fibroepithelial hyperplasia. Here, SMN1 is linked to neoplasm.