CTSL and breast cancer: Eighteen DEGs were qPCR validated: cola1i, cola1xi, cola1xii, tnc, lepr, atpd6p, apoci, apoeb in FD, and acta2, thymb, tpmsnb, myo1b, lipe, lipase, fabpi, catl, hsp70, calse in BC (Supplementary File 5).