TUG1 and acute lymphoblastic leukemia: The possible reasons might include that (a) recent several researches had connected the high lncRNA TUG1 expression with increased drug resistance to chemotherapy (such as adriamycin, cisplatin, gemcitabine) in the treatment of several malignancies, and therefore, we speculated that lncRNA TUG1 might enhance drug resistance, leading to poor treatment response and further undesirable long‐term survival profiles in Ph− ALL patients.