title: Prognostic value of P-glycoprotein and leukocyte differentiation antigens in chronic myeloid leukemia.
abstract: P-glycoprotein (Pgp) mediated multidrug resistance is often the cause of therapy failure in some tumors. Pgp expression was shown to have prognostic value in several hematological malignancies, especially in acute myeloblastic leukemia (AML) and acute lymphoblastic leukemia (ALL). In chronic myeloid leukemia (CML) Pgp is expressed by peripheral blood (PB) cells more often in the terminal disease stages (20-50% of patients have Pgp+ phenotype). Sequential studies show that Pgp+ cells often disappear from the PB during the course of therapy. Nevertheless Pgp expression has some prognostic value in blast crisis (BC) predicting shorter BC, while CD13 has the same predictive value in BC. 10% of patients formed a distinct group with large numbers of Pgp+CD34+ blasts in the PB and also had shorter BC. Cases with inactive Pgp were found in chronic and accelerated phases of CML but not in BC.
authors.affiliation: Cancer Research Centre of Russian Academy of Medical Sciences, Moscow.
authors.forename: A
authors.initials: A
authors.lastname: Stavrovskaya
authors.forename: A
authors.initials: A
authors.lastname: Turkina
authors.forename: N
authors.initials: N
authors.lastname: Sedyakhina
authors.forename: T
authors.initials: T
authors.lastname: Stromskaya
authors.forename: T
authors.initials: T
authors.lastname: Zabotina
authors.forename: N
authors.initials: N
authors.lastname: Khoroshko
authors.forename: A
authors.initials: A
authors.lastname: Baryshnikov
mesh_terms: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000502:physiology*; D015703:Antigens, CD / Q000276:immunology*; D018432:Drug Resistance, Multiple; D006801:Humans; D016130:Immunophenotyping; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000276:immunology* / Q000473:pathology* / Q000503:physiopathology*; D007962:Leukocytes / Q000276:immunology / Q000473:pathology; D011379:Prognosis
chemical_list: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D015703:Antigens, CD