Several fibroblast growth factors, including FGF1 (acidic FGF), FGF2 (basic FGF), FGF6, and FGF8, are all expressed in PCa and act as paracrine and/or autocrine growth factors for the PCa cells (Kwabi-Addo et al., 2004). Here, FGF6 is linked to posterior cortical atrophy.