Additionally, we also measured mRNA and protein levels of ARHGDIA in 4 normal human astrocyte cell lines (HA, NHA, HA-c and HA-sp), 1 human embryonic brain cell line (HEB) and 4 different human glioma cell lines (T98G, U87 MG, A172 and U251). The gene discussed is ARHGDIA; the disease is central nervous system cancer.