On the other hand, using the CSS (charcoal stripped serum) containing media, which suppressed the proliferation of LNCaP Ctr cells did not affect the proliferation of LNCaP-FUT8 cells even in the presence of different concentrations of Gefitinib (Figure 3D) suggesting a role of FUT8 in gefitinib and androgen-resistant mechanisms in prostate cancer cells. The gene discussed is FUT8; the disease is prostate cancer.