Aberrant expression of KOR-SA3544 antigen in childhood acute lymphoblastic leukemia predicts TEL-AML1 negativity. The Pediatric Hematology Working Group in the Czech Republic.
Leukemia
; 12(7): 1064-70, 1998 Jul.
Article
en En
| MEDLINE
| ID: mdl-9665191
ABSTRACT
The antigen KOR-SA3544 is physiologically expressed exclusively on granulocytes. Aberrant expression of KOR-SA3544 has been invariably found in BCR/ABL-positive acute lymphoblastic leukemia (ALL) and in some BCR/ABL-negative ALL. In an interim analysis of a prospective clinical and cytometric study data of 73 children with newly diagnosed or relapsed ALL with and without TEL/AML1 fusion are presented. KOR-SA3544 expression over 3% was detected in the majority of TEL/AML1-negative patients with newly diagnosed common or preB ALL (19 of 31) and not in TEL/AML1-positive patients (0 of 18, P < 0.0001). The level of expression of KOR-SA3544 was 0.02-90% (median 6.0%) and 0.03-2.4% (median 0.23%) in TEL/AML1-negative and TEL/AML1-positive patients, respectively. All five newly diagnosed patients with DNA index > or =1.16 and <1.6 exhibited high levels of KOR-SA3544 expression. Membrane expression of CD79a was found to correlate with TEL/AML1 negativity, although less significantly than KOR-SA3544 (P = 0.03). Furthermore, our data confirm that TEL/AML1 positivity correlates with non-hyperdiploidy and low presenting age. In conclusion, KOR-SA3544 correlated strongly with TEL/AML1 negativity, it was a better predictor of TEL/AML1 status than other factors tested and was found at high levels in hyperdiploidy. In combination with age, KOR-SA3544 predicted TEL/AML1 status in 86% newly diagnosed preB/cALL patients.
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Bases de datos:
MEDLINE
Asunto principal:
Proteínas Represoras
/
Factores de Transcripción
/
Proteínas Proto-Oncogénicas
/
Proteínas de Unión al ADN
/
Leucemia-Linfoma Linfoblástico de Células Precursoras
/
Antígenos de Neoplasias
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Límite:
Child
/
Humans
Idioma:
En
Revista:
Leukemia
Asunto de la revista:
HEMATOLOGIA
/
NEOPLASIAS
Año:
1998
Tipo del documento:
Article
País de afiliación:
República Checa