Consistently, the median of EGFR expression before normalization was similar for the two groups (0.00234 for R versus 0.00134 for NR, p = 0.1 Mann Whitney test), while the calculation of the scores of expression revealed a significantly higher median score for tumors of the responding tumor group (138.5 for R versus 28 for NR, p = 0.002 Mann Whitney test). This evidence concerns the gene EGFR and neoplasm.