GPT and acute promyelocytic leukemia: Maintenance of telomere length by activation of telomerase or ALT (Alternative mechanism of Lengthening of Telomeres) led to overcoming replicative mortality by cancer cells and WFA was found to have stronger cytotoxic effects on ALT cells by telomere dysfunction, DNA damage, upregulation and inhibition of ALT-associated promyelocytic leukemia nuclear bodies in these cells.