Using Spearman’s correlation, a correlation between FRAP level and the regions of the spectrum 3874 cm−1 (r = 0.829; p = 0.042), 3876 cm−1 (r = 0.829; p = 0.042), and 3878 cm−1 (r = 0.829; p = 0.042) was found for the HER2+ BC group. The gene discussed is ERBB2; the disease is breast cancer.