On the other hand, another study investigated the relationship between the rs9939609T > A polymorphism of the FTO gene in a cohort of 191 ALL survivors aged 4–26 years [31], showing that among patients treated with CRT, those homozygous for the rs9939609T allele had a significantly lower incidence of overweight after treatment compared to before treatment. Here, FTO is linked to acute lymphoblastic leukemia.