Optimization of the Treatment of Adults With Precursor Lymphoid Neoplasms With Adjustment of the Type and Intensity of the Therapy for Age, Status of Minimal Residual Disease, Genetic and Phenotypic Features

Between 1997-2010 the PALG run three prospective studies. In the most recent PLAG 5-2007 protocol attempts have been made to individualize treatment. In particular, stratification to high and standard risk group was based on both conventional clinical criteria and the level of MRD after induction and consolidation. Patients with unsatisfactory response were referred for allogeneic hematopoietic stem cell transplantation (alloHSCT). Interim analysis showed significant improvement compared to previous PALG 4-2002 protocol with regard to both overall survival and leukemia-free survival. The reasons of failure were relapses and non-relapse mortality (NRM) associated with alloHSCT. In the current protocol we intend to further adjust the therapy for individual patients needs. We assume that this way we will be able to reduce the risk of relapse and NRM and improve the cure rate. All patients will receive multiagent induction and consolidation chemotherapy. The type and intensity of the therapy, as well as indications for allogeneic and autologous HSCT will depend on age, status of MRD, immunophenotype and the presence of BCR/ABL fusion gene.