Furthermore, when mRNA levels of LTB were analyzed in pediatric samples of B-ALL (Children’s Oncology Group Study 9906 for High-Risk Pediatric ALL) and associated with clinical outcome at the time of diagnosis, we noted an inverse correlation between LTB transcript abundance and relapse-free survival that reached statistical significance (Figure 2—figure supplement 1A). This evidence concerns the gene LTB and precursor B-cell acute lymphoblastic leukemia.