Median fold change of ALDH1 expression in the EpCAM(+) fraction was 1.32 (range: 0.69–2.19) in HD and 2.97(range: 2.30–14.72) in ALDH1high (Mann-Whitney test, Ζ = −5.119, p < 0.001) and 0.84 (range: 0.06–2.16) in ALDH1low early BrCa patients (Mann-Whitney test, Ζ = −2.190, p = 0.029) (Figure 1D). The gene discussed is ALDH1A1; the disease is invasive breast carcinoma.