In addition to imprinted genes, the 20q11-q13.32 chromosomal region contains multiple non-imprinted genes involved in cancer, e.g., AIB3, AIB4, AURKA (STK6), BTAK, MYBL2, PTPN1, STK15, and ZNF217 [77, 95, 133, 135]. Here, PTPN1 is linked to cancer.