Volume 41, Issue 2 pp. 287-292
ORIGINAL ARTICLE

Acute myeloid leukemia with t(10;11)(p11-12;q23.3): Results of Russian Pediatric AML registration study

Elena Zerkalenkova

Corresponding Author

Elena Zerkalenkova

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

Correspondence

Elena Zerkalenkova, Laboratory of Cytogenetics and Molecular Genetics, Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia.

Email: [email protected]

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Svetlana Lebedeva

Svetlana Lebedeva

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

Department of Fundamental Medicine, Moscow State University named after M.V. Lomonosov, Moscow, Russia

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Anna Kazakova

Anna Kazakova

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Grigory Tsaur

Grigory Tsaur

Regional Children’s Hospital No. 1, Yekaterinburg, Russia

Research Institute of Medical Cell Technologies, Yekaterinburg, Russia

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Yulia Starichkova

Yulia Starichkova

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Natalia Timofeeva

Natalia Timofeeva

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Olga Soldatkina

Olga Soldatkina

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Evgenia Aprelova

Evgenia Aprelova

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Aleksandr Popov

Aleksandr Popov

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Natalia Ponomareva

Natalia Ponomareva

Russian Children’s Clinical Hospital, Moscow, Russia

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Ludmila Baidun

Ludmila Baidun

Russian Children’s Clinical Hospital, Moscow, Russia

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Claus Meyer

Claus Meyer

Institute of Pharmaceutical Biology, Diagnostic Centre of Acute Leukemia (DCAL), Goethe-University of Frankfurt, Frankfurt/Main, Germany

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Galina Novichkova

Galina Novichkova

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Michael Maschan

Michael Maschan

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Aleksey Maschan

Aleksey Maschan

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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Rolf Marschalek

Rolf Marschalek

Institute of Pharmaceutical Biology, Diagnostic Centre of Acute Leukemia (DCAL), Goethe-University of Frankfurt, Frankfurt/Main, Germany

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Yulia Olshanskaya

Yulia Olshanskaya

Dmitry Rogachev National Medical and Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia

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First published: 09 January 2019
Citations: 11

Abstract

Introduction

Translocations involving the KMT2A gene (also known as MLL) are frequently diagnosed in pediatric acute leukemia cases with either lymphoblastic or myeloid origin. KMT2A is translocated to multiple partner genes, including MLLT10/AF10 localizing at chromosomal band 10p12. KMT2A-MLLT10 is one of the common chimeric genes diagnosed in acute leukemia with KMT2A rearrangement (8%), especially in acute myeloid leukemia (AML; 18%). MLLT10 is localized in very close proximity to two other KMT2A partner genes at 10p11-12—NEBL and ABI1, so they could not be distinguished by conventional cytogenetics.

Methods

In this work, we present a cohort of 28 patients enrolled into Russian Pediatric AML registration study carrying rearrangements between chromosomal regions 11q23.3 and 10p11-12. G-banding, FISH, reverse transcription PCR, and long-distance inverse PCR were used to characterize the KMT2A gene rearrangements in these patients.

Results

We demonstrate that 25 patients harbor the KMT2A-MLLT10 rearrangement, while three patients show the rare KMT2A rearrangements (2× KMT2A-NEBL; 1× KMT2A-ABI1).

Conclusions

Therefore, the combination of cytogenetic and molecular genetic methods is of high importance in diagnosing cases with t(10;11)(p11-12;q23.3).

CONFLICT OF INTEREST

The authors declare no conflicts of interest.

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