title: Combination of chemotherapy and gemtuzumab ozogamicin in adult Philadelphia positive acute lymphoblastic leukemia patient harboring CD33 expression.
abstract: Gemtuzumab Ozogamicin (GO) is a humanized anti-CD33 antibody conjugated with a cytotoxic antitumor antibiotic, calicheamicin-g1. It was developed at the end of the nineties as 90% of the leukemic blast population of patients with acute myeloid leukaemia (AML) express the CD33 surface antigen (Dinndorf et al. [1] Blood 1986;67:1048-53). GO is currently approved in monotherapy for the treatment of CD33+ AML patients in first relapse, showing a 26% overall response rate and a median disease-free-survival of 5.2 months for responders (Larson et al. [2] Cancer 2005;104:1442-52). CD33 antigen expression is also observed at diagnosis (in 15% of cases) (Pui et al. [3] J Clin Oncol 1998;16:3768-73) or at relapse (Guglielmi et al. [4] Leukemia 1997; 11:1501-7) of acute lymphoblastic leukaemia (ALL), representing a potential cellular target for ALL patients. Case series have already demonstrated the efficacy of GO in children with relapsed CD33+ ALL with documentation of complete remission (CR) (Balduzzi et al. [5] Leukemia 2003;17:2247-8; Cotter et al. [6] Br J Haematol 2003;122:686-91; Zwaan et al. [7] Leukemia 2003;17:468-70). In the other hand, there is no report at our knowledge of the use of GO in the setting of adult CD33+ ALL patient. Here we report the case of a 30-year-old man with a refractory CD33+ ALL who received a salvage regimen combining chemotherapy + GO and achieved a transient CR.
authors.affiliation: Department of Hematology, Centre Hospitalier Universitaire, Nantes, France. patrice.chevallier@chu-nantes.fr.|Service d'Hématologie Clinique, Centre Hospitalier Universitaire, 9 quai Moncousu, BP1005, 44093, Nantes cedex 01, France. patrice.chevallier@chu-nantes.fr.
authors.forename: Patrice
authors.initials: P
authors.lastname: Chevallier
authors.affiliation: Department of Hematology, Centre Hospitalier Universitaire, Nantes, France.
authors.forename: Beatrice
authors.initials: B
authors.lastname: Mahe
authors.affiliation: Department of Hematology, Centre Hospitalier Universitaire, Nantes, France.
authors.forename: Richard
authors.initials: R
authors.lastname: Garand
authors.affiliation: Department of Hematology, Centre Hospitalier Universitaire, Nantes, France.
authors.forename: Pascaline
authors.initials: P
authors.lastname: Talmant
authors.affiliation: Department of Hematology, Centre Hospitalier Universitaire, Nantes, France.
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Harousseau
authors.affiliation: Department of Hematology, Centre Hospitalier Universitaire, Nantes, France.
authors.forename: Jacques
authors.initials: J
authors.lastname: Delaunay
mesh_terms: D000328:Adult; D000617:Aminoglycosides / Q000008:administration & dosage*; D000911:Antibodies, Monoclonal / Q000008:administration & dosage*; D061067:Antibodies, Monoclonal, Humanized; D015703:Antigens, CD / Q000378:metabolism; D015214:Antigens, Differentiation, Myelomonocytic / Q000378:metabolism; D000970:Antineoplastic Agents / Q000008:administration & dosage*; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage; D003131:Combined Modality Therapy; D017809:Fatal Outcome; D000079982:Gemtuzumab; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D008297:Male; D010677:Philadelphia Chromosome; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000188:drug therapy* / Q000235:genetics*; D012074:Remission Induction; D063268:Sialic Acid Binding Ig-like Lectin 3
chemical_list: D000617:Aminoglycosides; D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D015703:Antigens, CD; D015214:Antigens, Differentiation, Myelomonocytic; D000970:Antineoplastic Agents; C571163:CD33 protein, human; D063268:Sialic Acid Binding Ig-like Lectin 3; D000079982:Gemtuzumab