In the isolated tumor membranes (n = 10), the mean basal expression of EGFR (BT) was 7.6±1.9 fmol/mg protein, and 30 min after “bolus” administration of goserelin these levels increased to 10.5±6.8 fmol/mg, while after 60 min they reached 19.4±16.2 fmol/mg before dropping slightly to 13.3±11.9 fmol/mg after 90 min. This evidence concerns the gene EGFR and neoplasm.