TP53BP1 and acute myeloid leukemia: In general, the same levels of endogenous foci were found in the UCB MNC of children that later develop leukemia (except patient with AML/DS) and those of healthy probands regardless the type of analysis: 53BP1, γH2AXp, or γH2AXm/53BP1 foci (ANOVA, p = 0.12).