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dic(7;9)(p11-13;p11).

Mary J Underdown1, Thomas B Russell1, Mark J Pettenati1

  • 1Department of Pediatrics, Wake Forest School of Medicine, Winston Salem, North Carolina (MJU); Section of Pediatric Hematology-Oncology, Department of Pediatrics, Wake Forest School of Medicine, Winston Salem, North Carolina (DEK, TBR); Department of Pathology, Wake Forest School of Medicine, Winston Salem, USA (MJP), Medical Center Boulevard, Winston Salem, NC, USA 27157.

Atlas of Genetics and Cytogenetics in Oncology and Haematology
|September 17, 2021
PubMed
Summary
This summary is machine-generated.

Dicentric chromosome (7;9)(p11-13;p11) is a rare abnormality in B acute lymphoblastic leukemia (B-ALL). This genetic event is linked to PAX5 mutations, offering insights into leukemia development and prognosis.

Keywords:
Acute lymphoblastic leukemiaPAX5chromosome 7chromosome 9dicentric translocation

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Area of Science:

  • Hematology
  • Cancer Genetics
  • Molecular Biology

Background:

  • Dicentric chromosome (7;9)(p11-13;p11) is a rare recurrent abnormality observed in precursor B acute lymphoblastic leukemia (B-ALL).
  • The limited incidence of this cytogenetic abnormality hinders comprehensive understanding of its biological mechanisms and prognostic implications.
  • Recent research suggests a connection between dic(7;9) and mutations in the PAX5 gene.

Purpose of the Study:

  • To investigate the biological significance of the dicentric (7;9)(p11-13;p11) chromosomal abnormality in B-ALL.
  • To explore the association between dic(7;9) and PAX5 mutations in the context of leukemogenesis.
  • To elucidate the potential prognostic value of the dic(7;9) abnormality in B-ALL patients.

Main Methods:

  • Cytogenetic analysis to identify the dicentric (7;9)(p11-13;p11) abnormality.
  • Molecular genetic techniques to detect PAX5 mutations.
  • Correlation analysis between cytogenetic findings, molecular alterations, and clinical data.

Main Results:

  • The dicentric (7;9)(p11-13;p11) abnormality was identified as a recurrent feature in B-ALL.
  • A significant correlation was observed between the presence of dic(7;9) and mutations in the PAX5 gene.
  • These findings suggest the involvement of dic(7;9) in the leukemic transformation process.

Conclusions:

  • The dicentric (7;9)(p11-13;p11) abnormality plays a role in the pathogenesis of B-ALL.
  • The co-occurrence of dic(7;9) and PAX5 mutations provides crucial insights into B-ALL development.
  • Further investigation is warranted to fully understand the prognostic impact of dic(7;9) in B-ALL.