HAVCR2 and precursor B-cell acute lymphoblastic leukemia: In order to study the influence of these genes’ expression in leukemic cells on the prognosis of B-ALL patients, bone marrow (BM) and peripheral blood (PB) samples in the TARGET database were divided into two groups of high and low Galectin-9 and TIM-3 expression, according to mean expression levels in each group.