ACVR1C and meningioma: The mRNA expressions of ALK7 (ACVR1C), Cyclin G1 (CCNG1), E2F5, mTOR, PTEN, RICTOR, RUNX1T1 (Cyclin D-related), SIRT1, p53, and p63 were evaluated by RT-qPCR in meningioma and normal dura using GAPDH as a reference gene (Table S4a).