Our patients had not yet presented tumor manifestations, and this may be due to the detected hypoexpression of several tumorigenesis‐related genes such as GLI1, KIT, WNT7A, AXIN2, FGFR1, FZD3, FZD6, ITGA6, PDGFB, PLEKHG5, and PRKC. This evidence concerns the gene PDGFB and neoplasm.