EGFR and neoplasm: Mann-Whitney’s test revealed a significant difference in measured tumor marker level for CA 125 between tumors with EGFR mutation and those without (mean rank 54.28 for EGFR mutation negative and 28.77 for the EGFR mutation positive, p = 0.003) but not for the other tumor markers (p-values from 0.1 to 0.8).