As shown in Table 5, the distribution of allelic groups in the study population revealed that of the 16 HLA-A allelic groups identified, HLA-A*02 was the most prevalent in children with BCP-ALL, comprising 16.66% of cases compared to 23.89% in the controls; nevertheless, no correlation was detected as shown in Table 6 bellow. The gene discussed is HLA-A; the disease is acute lymphoblastic leukemia.