highly significantP = 3.2 × 10 -5
The assigned thresholds were then validated by examining the association between immunostaining scores of the HER-2 gene (HercepTest, DAKO, DK-2600, Glostrup, Denmark) and copy number states, that is, gains, no change and deletions, which was found to be highly significant (Pearson's correlation, r = 0.53, P = 3.2 × 10 -5 ).