Leukemia-associated changes identified by quantitative flow cytometry. IV. CD34 overexpression in acute myelogenous leukemia M2 with t(8; 21)

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Leukemia-associated changes identified by quantitative flow cytometry. IV. CD34 overexpression in acute myelogenous leukemia M2 with t(8; 21). / Porwit-MacDonald, Anna; Janossy, George; Ivory, Kamal; Swirsky, David; Peters, Rowayda; Wheatley, Keith; Walker, Helen; Turker, Alev; Goldstone, Anthony H.; Burnett, Alan.

In: Blood, Vol. 87, No. 3, 01.02.1996, p. 1162-1169.

Research output: Contribution to journalArticlepeer-review

Harvard

Porwit-MacDonald, A, Janossy, G, Ivory, K, Swirsky, D, Peters, R, Wheatley, K, Walker, H, Turker, A, Goldstone, AH & Burnett, A 1996, 'Leukemia-associated changes identified by quantitative flow cytometry. IV. CD34 overexpression in acute myelogenous leukemia M2 with t(8; 21)', Blood, vol. 87, no. 3, pp. 1162-1169.

APA

Porwit-MacDonald, A., Janossy, G., Ivory, K., Swirsky, D., Peters, R., Wheatley, K., Walker, H., Turker, A., Goldstone, A. H., & Burnett, A. (1996). Leukemia-associated changes identified by quantitative flow cytometry. IV. CD34 overexpression in acute myelogenous leukemia M2 with t(8; 21). Blood, 87(3), 1162-1169.

Vancouver

Author

Porwit-MacDonald, Anna ; Janossy, George ; Ivory, Kamal ; Swirsky, David ; Peters, Rowayda ; Wheatley, Keith ; Walker, Helen ; Turker, Alev ; Goldstone, Anthony H. ; Burnett, Alan. / Leukemia-associated changes identified by quantitative flow cytometry. IV. CD34 overexpression in acute myelogenous leukemia M2 with t(8; 21). In: Blood. 1996 ; Vol. 87, No. 3. pp. 1162-1169.

Bibtex

@article{0a0d7f9cec27415d81e096ffce86c4d3,
title = "Leukemia-associated changes identified by quantitative flow cytometry. IV. CD34 overexpression in acute myelogenous leukemia M2 with t(8; 21)",
abstract = "During the immunodiagnosis of 517 cases of acute myelogenous leukemia (AML) entered into the Medical Research Council (MRC) AML10 trials, we have observed the CD34 precursor cell antigen more frequently in AML of M2 morphology, especially in the 84% of cases with the t(8;21) chromosomal translocation, than in any other French-American-British classification group. CD34 expression was then quantified (using QIFI and Quantum Simply Cellular beads [Flow Cytometry Standards, Research Triangle Park, NC] and CD34+ standard cells). When CD34 antibody-binding capacity (ABC) of normal bone marrow (BM) precursors and leukemic blasts was compared, it was shown that AML M2 cases with t(8;21) not only had the highest percentages of CD34+ blasts, but in >80% of CD34+ cases the individual blasts expressed higher than normal levels of CD34 antigen (>60 × 103 ABC per cell). In addition, in 73% of this group CD34 antigen was overexpressed in an asynchronous combination with cytoplasmic myeloperoxidase (MPO). Other signs of asynchrony included high CD34 expression with CD15 and/ or CD56, as well as aberrant combinations of CD13 with terminal deoxynucleotidyl transferase (TdT) and CD19. These findings demonstrate that asynchrony is identifiable in virtually every case of AML with t(8;21), although it does not always involve the same antigens. M2 cases with t(8;21), mostly CD34+, had a 100% remission rate and 71% 5-year survival rate; other patients with CD34+ or CD34- AML showed 69% and 84% remission rates and 31% and 36% 5-year survival rates, respectively. Consequently, individual markers such as CD34 should be interpreted in relation to other features such as chromosomal changes. These simple methods, which are well suited to quantify the expression of ligands, are a useful contribution to diagnosis: 60% to 65% of M2 cases with t(8;21) are rapidly identified by CD34 overexpression alone. This aberration, together with the other signs of asynchrony seen at presentation, can be used to search for residual leukemia after therapy.",
author = "Anna Porwit-MacDonald and George Janossy and Kamal Ivory and David Swirsky and Rowayda Peters and Keith Wheatley and Helen Walker and Alev Turker and Goldstone, {Anthony H.} and Alan Burnett",
year = "1996",
month = feb,
day = "1",
language = "English",
volume = "87",
pages = "1162--1169",
journal = "Blood",
issn = "0006-4971",
publisher = "American Society of Hematology",
number = "3",

}

RIS

TY - JOUR

T1 - Leukemia-associated changes identified by quantitative flow cytometry. IV. CD34 overexpression in acute myelogenous leukemia M2 with t(8; 21)

AU - Porwit-MacDonald, Anna

AU - Janossy, George

AU - Ivory, Kamal

AU - Swirsky, David

AU - Peters, Rowayda

AU - Wheatley, Keith

AU - Walker, Helen

AU - Turker, Alev

AU - Goldstone, Anthony H.

AU - Burnett, Alan

PY - 1996/2/1

Y1 - 1996/2/1

N2 - During the immunodiagnosis of 517 cases of acute myelogenous leukemia (AML) entered into the Medical Research Council (MRC) AML10 trials, we have observed the CD34 precursor cell antigen more frequently in AML of M2 morphology, especially in the 84% of cases with the t(8;21) chromosomal translocation, than in any other French-American-British classification group. CD34 expression was then quantified (using QIFI and Quantum Simply Cellular beads [Flow Cytometry Standards, Research Triangle Park, NC] and CD34+ standard cells). When CD34 antibody-binding capacity (ABC) of normal bone marrow (BM) precursors and leukemic blasts was compared, it was shown that AML M2 cases with t(8;21) not only had the highest percentages of CD34+ blasts, but in >80% of CD34+ cases the individual blasts expressed higher than normal levels of CD34 antigen (>60 × 103 ABC per cell). In addition, in 73% of this group CD34 antigen was overexpressed in an asynchronous combination with cytoplasmic myeloperoxidase (MPO). Other signs of asynchrony included high CD34 expression with CD15 and/ or CD56, as well as aberrant combinations of CD13 with terminal deoxynucleotidyl transferase (TdT) and CD19. These findings demonstrate that asynchrony is identifiable in virtually every case of AML with t(8;21), although it does not always involve the same antigens. M2 cases with t(8;21), mostly CD34+, had a 100% remission rate and 71% 5-year survival rate; other patients with CD34+ or CD34- AML showed 69% and 84% remission rates and 31% and 36% 5-year survival rates, respectively. Consequently, individual markers such as CD34 should be interpreted in relation to other features such as chromosomal changes. These simple methods, which are well suited to quantify the expression of ligands, are a useful contribution to diagnosis: 60% to 65% of M2 cases with t(8;21) are rapidly identified by CD34 overexpression alone. This aberration, together with the other signs of asynchrony seen at presentation, can be used to search for residual leukemia after therapy.

AB - During the immunodiagnosis of 517 cases of acute myelogenous leukemia (AML) entered into the Medical Research Council (MRC) AML10 trials, we have observed the CD34 precursor cell antigen more frequently in AML of M2 morphology, especially in the 84% of cases with the t(8;21) chromosomal translocation, than in any other French-American-British classification group. CD34 expression was then quantified (using QIFI and Quantum Simply Cellular beads [Flow Cytometry Standards, Research Triangle Park, NC] and CD34+ standard cells). When CD34 antibody-binding capacity (ABC) of normal bone marrow (BM) precursors and leukemic blasts was compared, it was shown that AML M2 cases with t(8;21) not only had the highest percentages of CD34+ blasts, but in >80% of CD34+ cases the individual blasts expressed higher than normal levels of CD34 antigen (>60 × 103 ABC per cell). In addition, in 73% of this group CD34 antigen was overexpressed in an asynchronous combination with cytoplasmic myeloperoxidase (MPO). Other signs of asynchrony included high CD34 expression with CD15 and/ or CD56, as well as aberrant combinations of CD13 with terminal deoxynucleotidyl transferase (TdT) and CD19. These findings demonstrate that asynchrony is identifiable in virtually every case of AML with t(8;21), although it does not always involve the same antigens. M2 cases with t(8;21), mostly CD34+, had a 100% remission rate and 71% 5-year survival rate; other patients with CD34+ or CD34- AML showed 69% and 84% remission rates and 31% and 36% 5-year survival rates, respectively. Consequently, individual markers such as CD34 should be interpreted in relation to other features such as chromosomal changes. These simple methods, which are well suited to quantify the expression of ligands, are a useful contribution to diagnosis: 60% to 65% of M2 cases with t(8;21) are rapidly identified by CD34 overexpression alone. This aberration, together with the other signs of asynchrony seen at presentation, can be used to search for residual leukemia after therapy.

UR - http://www.scopus.com/inward/record.url?scp=0030042827&partnerID=8YFLogxK

M3 - Article

C2 - 8562943

AN - SCOPUS:0030042827

VL - 87

SP - 1162

EP - 1169

JO - Blood

JF - Blood

SN - 0006-4971

IS - 3

ER -