Among the differentially expressed proteins (fold-change ≥ 1.5; FDR 1%), 9 proteins were common between MGI and MGII, 13 proteins were common between MGI and MGIII, and 46 proteins were common between MGII and MGIII, while 34 proteins were found to be overlapping among all the three grades of meningiomas (Figure 3B). Here, CHRNE is linked to meningioma.