Upon immunohistochemical analysis of Ki67 and Filamin C expression in LNCaP tumors obtained from LNCaP tumor-bearing nude mice treated with two different concentrations of DU145 exosomes (10 μg and 100 μg), we confirmed that the expression of Filamin C had increased upon DU145 exosome treatment. The gene discussed is FLNC; the disease is neoplasm.