B Cell Acute Lymphoblastic Leukaemia

This will be a multi-center registry for patients with B-ALL. Patient data will be collected both retrospectively and prospectively. The data forms and surveys will be built and managed through REDCap, a secure web application managed by the Clinical \& Translational Science Institute.

The goal of this observational study is to evaluate the efficacy of the treatment with approved CAR-T cells in Italy in pediatric and adult patients with acute B-cell lymphoblastic leukemia. The main question it aims to answer is: which is the overall response rate in pediatric and adult patients with acute B-cell lymphoblastic leukemia treated with approved CAR-T cells? Data will be extracted from patients medical records.

The IntReALL BCP 2020 study aims to review recent developments and findings regarding chemoimmunotherapy with inotuzumab and immunotherapy with blinatumomab and to increase the use of promising new immunotherapeutic drugs as replacements for toxic SOC chemotherapy elements. The IntReALL BCP 2020 study has the potential to improve CR and EFS rates for all SR and HR groups, as well as for patients with IEM recurrence, by replacing toxic chemotherapy with targeted, less toxic immunotherapy strategies, and could establish these new approaches as SOC for children with relapsed BCP ALL in the future.

The goal of this observational study is to establish a clear vaccination protocol for pediatric patients (less than 21 years old) who have received treatment for B-cell Acute Lymphoblastic Leukemia/Lymphoma. The main study aims are: * Evaluate the persistence of protective immunity to routine childhood vaccinations in participants with B-ALL/Ly who have received blinatumomab. * To determine whether revaccination in participants with non-protective titers leads to restored humoral immunity. Researchers will compare results from participants who have received immunotherapy to those who have not received immunotherapy to see if immunotherapy versus other chemotherapeutic drugs adversely affect the protective immunity acquired through vaccination.