We reviewed the DNA copy number status at the CDH1 gene locus in the 153 lobular tumours from The Cancer Genome Atlas (TCGA) data resource [30,31] and this revealed that 12.4% of tumours show a diploid copy number; 84.3% show a single copy loss and 3.3% show a putative homozygous deletion. This evidence concerns the gene CDH1 and neoplasm.