| Exclusion Criteria: | 1) Patients with Ph-positive ALL
2) Patients with Burkittīs Leukemia according to WHO classification
3) History or presence of clinically relevant CNS pathology as epilepsy, seizure, paresis, aphasia, stroke, severe brain injuries, dementia, Parkinson's disease, cerebellar disease, organic brain syndrome, psychosis
4) Active ALL in the CNS or testes
5) Current autoimmune disease or history of autoimmune disease with potential CNS involvement
6) Autologous HSCT within six weeks prior to start of blinatumomab treatment
7) Allogeneic HSCT within three months prior to start of blinatumomab treatment
8) Any active acute GvHD, or active chronic GvHD Grade 2 - 4
9) Any systemic therapy against GvHD within two weeks prior to start of blinatumomab treatment
10) Cancer chemotherapy within two weeks prior to start of blinatumomab treatment (intrathecal chemotherapy and dexamethasone are allowed until start of blinatumomab treatment)
11) Radiotherapy within two weeks prior to start of blinatumomab treatment
12) Immunotherapy (e.g., rituximab) within four weeks prior to start of blinatumomab treatment
13) Any investigational anti-leukemic product within four weeks prior to start of blinatumomab treatment
14) Treatment with any other investigational medicinal product (IMP) after signature of informed consent
15) Eligibility for allogeneic HSCT at the time of enrollment (as defined by disease status, performance status and availability of donor)
16) Known hypersensitivity to immunoglobulins or to any other component of the IMP formulation
17) Abnormal laboratory values as defined below: a. AST (SGOT) and/or ALT (SGPT) and/or AP >/= 5 x ULN b. Total bilirubin >/= 1.5 x ULN (unless related to Gilbertīs or Meulengracht disease) c. Creatinine >/= 1.5 ULN or Creatinine clearance < 50 ml/min (calculated) d. Hb </= 9 g/dl (transfusion allowed)
18) History of malignancy other than ALL within five years prior to start of blinatumomab treatment with the exception of basal cell or squamous cell carcinoma of the skin, or carcinoma "in situ" of the cervix
19) Active uncontrolled infection, any other concurrent disease or medical condition that is deemed to interfere with the conduct of the study as judged by the investigator
20) Infection with HIV or chronic infection with hepatitis B virus (HBsAg positive) or hepatitis C virus (anti-HCV positive)
21) Pregnant or nursing women
22) Women of childbearing potential not willing to use an effective form of contraception during participation in the study and at least three months thereafter. Male patients not willing to ensure not to beget a child during participation in the study and at least three months thereafter
23) Previous treatment with blinatumomab |