Treatment Of Adults With Relapsed/Refractory Philadelphia Chromosome Negative Acute Lymphoblastic Leukemia With Blinatumomab In A Real-World Setting: Results From The Neuf Study

Background: Blinatumomab is approved in Europe for adult and pediatric patients (pts) with relapsed and/or refractory Philadelphia chromosome-negative B-cell precursor acute lymphoblastic leukemia (R/R Ph- BCP-ALL), and for adult pts with minimal residual disease (MRD)-positive Ph- BCP-ALL. Prior to country-specific reimbursement, blinatumomab was made available to pts who met pre-specified criteria via an expanded access program: this included both adult and pediatric pts with a diagnosis of R/R Ph- BCP-ALL, R/R Ph+ BCP-ALL, or MRD-positive Ph-/Ph+ ALL. Here, we describe adults with R/R Ph- BCP-ALL enrolled in this retrospective observational study (NEUF) in specific European countries, with reference to their characteristics, blinatumomab usage and effectiveness.