BRCA2 and cancer: In the human genome, a normal chromosome 13 is approximately 114 Mb in size, containing 300–400 genes, including well-known cancer-related genes such as RB1 and breast cancer type 2 susceptibility protein (BRCA2) (https://www.ncbi.nlm.nih.gov/gdv/browser/genome/?id=GCF_000001405.40&chr=13, Last accessed on 14 January 2025).