CDKN1B and posterior cortical atrophy: Using protein antibody array analysis, we identified CXCR5-signaling networks that in PCa cell lines, which were driven by Akt1/2, Cdk1/2, CDKN1B, CREB1, FAK, Integrinβ3, Src, Paxillin, JNK, JUN, SAPK, and differential G protein activation5,36.