RNAseq data of the breast tumor revealed the presence of one novel transcript CDH1 r.1831_1936del due to the use of the cryptic exonic splicing donor site at the DNA codon position CDH1 c.1830 on exon 12, causing the loss of the last 160 nucleotides of exon 12 (CDH1 Δ12q). Here, CDH1 is linked to breast neoplasm.