While the occurrence of the high level of EphA3 expression in the PCa samples was greater (35 [54.7%] of 64) than that in the adjacent tissue samples (13 [20.3%] of 64; χ2 = 16.133, P = 0.000, chi‐squared test; Table 2). The gene discussed is EPHA3; the disease is posterior cortical atrophy.