The much higher amount of PARP in the tumor cells versus normal cells is a phenomenon observed in numerous other tumor cells or tumor tissues, for example breast tumors [79], gastric cancer [80], acute myeloid leukemia [81], primary cervical tumors and cervical cancer cell lines [82] which was described to be associated with tumor progression and metastasis as well as a poor prognosis [83], whereby the mechanisms leading to that high PARP level have not been completely understood until now. This evidence concerns the gene PARP1 and acute myeloid leukemia.