Furthermore, IHC and Oil Red O staining revealed that POU6F2-AS1 knockdown decreased FASN protein levels, suppressed tumour cell growth (as measured by Ki-67 staining) and decreased lipid content, while FASN overexpression in these cells restored FASN expression and increased lipogenesis, and elevated Ki-67 staining (Fig. 6D). The gene discussed is FASN; the disease is neoplasm.