A 327 bp homozygous deletion (scaffold_12:20762508-20762835), which overlaps CDH23 gene, was uncovered in tumor cell line when HCC1395BL_v1.0 was used as reference, which includes a copy of SINE/AluY (284 bp), but this AluY sequence is not present in GRCh38. This evidence concerns the gene CDH23 and neoplasm.