In hippocampal neurons, P2X7R signaling through CAMKII regulates axon growth [67], and in neuroblastoma cells, activation of CaMK II by P2X7R inhibits neurite growth [68], and induces cell proliferation in the absence of serum [69], suggesting that CAMKII may be a component of the P2X7R signaling pathway in schwannoma cells. Here, CAMK2G is linked to schwannoma.