title: Complete remission in a patient with hypoplastic acute lymphoblastic leukemia induced by granulocyte-colony-stimulating factor.
abstract: We report here a case of hypoplastic leukemia with T cell markers in whom complete remission was obtained with granulocyte-colony-stimulating factor (G-CSF) alone. A 23-year-old male was diagnosed with hypoplastic leukemia: Hb 2.6 g/dl, platelet count 29.0 x 10(9)/l after transfusion, WBC 2.9 x 10(9)/l, hypocellular bone marrow with 70.7% blasts. He was given G-CSF 300 micrograms/day by intravenous drip infusion without antileukemic agents for severe pneumonia. After the administration of G-CSF for 15 days, hematological examination and bone marrow findings had improved to normal, and complete remission was obtained. However, the patient relapsed 45 days after discontinuation of G-CSF. The characteristics of the relapsed leukemia cells were similar to those on admission: negative for myeloperoxidase and positive for T cell markers (CD2 and CD7). The possibilities for the differentiation of leukemic cells and the recovery of normal hematopoiesis with G-CSF are discussed.
authors.affiliation: First Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hatta
authors.forename: T
authors.initials: T
authors.lastname: Iwata
authors.forename: J
authors.initials: J
authors.lastname: Takeuchi
authors.forename: T
authors.initials: T
authors.lastname: Ohshima
authors.forename: T
authors.initials: T
authors.lastname: Horie
mesh_terms: D000328:Adult; D015703:Antigens, CD / Q000032:analysis; D019011:Antigens, CD7; D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D014408:Biomarkers, Tumor / Q000032:analysis; D001853:Bone Marrow / Q000473:pathology; D018801:CD2 Antigens / Q000032:analysis; D016179:Granulocyte Colony-Stimulating Factor / Q000627:therapeutic use*; D006801:Humans; D016130:Immunophenotyping; D008297:Male; D009195:Peroxidase / Q000032:analysis; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000188:drug therapy* / Q000276:immunology / Q000473:pathology; D012008:Recurrence; D012074:Remission Induction
chemical_list: D015703:Antigens, CD; D019011:Antigens, CD7; D000945:Antigens, Differentiation, T-Lymphocyte; D014408:Biomarkers, Tumor; D018801:CD2 Antigens; D016179:Granulocyte Colony-Stimulating Factor; D009195:Peroxidase