Both states, as well as schwannomas, exclusively overexpress α4-integrin (ITGA4, 1.8-fold, p= 0.003), AP2a (TFAP2A, 1.41-fold, p= 0.009) and Ncad (CDH2, 4.5-fold, p=5.42e-4). This evidence concerns the gene TFAP2A and schwannoma.