With respect to repetitive elements, CpelNano found four Alu repeats, AluY (314 bp), AluJb (83 bp), Aluz (310 bp), and AluSz (296 bp), at Chr. 17: 41,525,959–41,529,006 near the promoter CGI of KRT19 exhibiting profound loss of methylation in breast cancer (Fig. 5b and Table S3). This evidence concerns the gene KRT19 and breast cancer.