Flotetuzumab Active Not Recruiting Phase 1 Trials for Refractory Chronic Myelogenous Leukemia, BCR-ABL1 Positive / recurrent T-cell Acute Lymphoblastic Leukemia / Recurrent B Acute Lymphoblastic Leukemia / Refractory Hematologic Malignancy / Refractory B Cell Acute Lymphoblastic Leukemia (ALL) / Recurrent Hodgkin Lymphoma / Recurrent Blastic Plasmacytoid Dendritic Cell Neoplasm / Refractory Acute Leukemia / Recurrent Hematologic Malignancy / Recurrent Chronic Myelogenous Leukemia, BCR-ABL1 Positive / Refractory Hodgkin Lymphoma / Systemic Mastocytosis / Refractory Blastic Plasmacytoid Dendritic Cell Neoplasm / Refractory Hairy Cell Leukemia / refractory T-cell Acute Lymphoblastic Leukemia / Recurrent Hairy Cell Leukemia / Recurrent Acute Leukemia Treatment