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Published in: BMC Cancer 1/2006

Open Access 01-12-2006 | Research article

Prenatal origin of childhood AML occurs less frequently than in childhood ALL

Authors: Tatiana Burjanivova, Jozef Madzo, Katerina Muzikova, Claus Meyer, Bjoern Schneider, Felix Votava, Rolf Marschalek, Jan Stary, Jan Trka, Jan Zuna

Published in: BMC Cancer | Issue 1/2006

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Abstract

Background

While there is enough convincing evidence in childhood acute lymphoblastic leukemia (ALL), the data on the pre-natal origin in childhood acute myeloid leukemia (AML) are less comprehensive. Our study aimed to screen Guthrie cards (neonatal blood spots) of non-infant childhood AML and ALL patients for the presence of their respective leukemic markers.

Methods

We analysed Guthrie cards of 12 ALL patients aged 2–6 years using immunoglobulin (Ig) and T-cell receptor (TCR) gene rearrangements (n = 15) and/or intronic breakpoints of TEL/AML1 fusion gene (n = 3). In AML patients (n = 13, age 1–14 years) PML/RARalpha (n = 4), CBFbeta/MYH11 (n = 3), AML1/ETO (n = 2), MLL/AF6 (n = 1), MLL/AF9 (n = 1) and MLL/AF10 (n = 1) fusion genes and/or internal tandem duplication of FLT3 gene (FLT3/ITD) (n = 2) were used as clonotypic markers. Assay sensitivity determined using serial dilutions of patient DNA into the DNA of a healthy donor allowed us to detect the pre-leukemic clone in Guthrie card providing 1–3 positive cells were present in the neonatal blood spot.

Results

In 3 patients with ALL (25%) we reproducibly detected their leukemic markers (Ig/TCR n = 2; TEL/AML1 n = 1) in the Guthrie card. We did not find patient-specific molecular markers in any patient with AML.

Conclusion

In the largest cohort examined so far we used identical approach for the backtracking of non-infant childhood ALL and AML. Our data suggest that either the prenatal origin of AML is less frequent or the load of pre-leukemic cells is significantly lower at birth in AML compared to ALL cases.
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Metadata
Title
Prenatal origin of childhood AML occurs less frequently than in childhood ALL
Authors
Tatiana Burjanivova
Jozef Madzo
Katerina Muzikova
Claus Meyer
Bjoern Schneider
Felix Votava
Rolf Marschalek
Jan Stary
Jan Trka
Jan Zuna
Publication date
01-12-2006
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2006
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-6-100

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