Therefore, the current study aimed to investigate lncRNA, miRNA, and mRNA expression profiles related to B-ALL chemotherapy resistance via RNA sequencing, then further to explore the effect and interaction of the lncRNA DUXAP8/miR-29a/PIK3CA network on drug-resistant B-ALL cell proliferation, apoptosis, and chemosensitivity as well as its synergy with inotuzumab ozogamicin. The gene discussed is DUXAP8; the disease is acute lymphoblastic leukemia.