VEGFA and neoplasm: Regarding precursor steroids (DHEA and A4), the results showed that only serum DHEA concentrations were decreased (p < 0.05) after VEGF, SU5416 and celecoxib, whereas serum and tumour homogenate A4 concentrations significantly decreased (p < 0.05) after VEGF, bevacizumab and celecoxib.