A neonate with a unique non-Down syndrome transient proliferative megakaryoblastic disease

Eline J M Bertrums1,2, Arjan Buijs3, Martine van Grotel1

  • 1Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands.

Pediatric Blood & Cancer
|September 27, 2016
PubMed

Insights

Transient myeloproliferative disorder (TMD) is a rare leukemia in newborns. This study details a TMD case without trisomy 21, revealing novel genetic deletions that could aid diagnosis.

Area of Science:

  • Hematology
  • Pediatric Oncology
  • Genetics

Background:

  • Transient myeloproliferative disorder (TMD) is a leukemia primarily affecting newborns.
  • In Down syndrome, TMD is known as transient abnormal myelopoiesis (TAM).
  • Transient myeloproliferative disorder cases lacking trisomy 21 are uncommon, with few described genetic aberrations.

Observation:

  • A patient with transient myeloproliferative disorder (TMD) but without trisomy 21 or GATA1 mutation was analyzed.
  • Single-nucleotide polymorphism analysis was performed on the leukemic blasts.

Findings:

  • A novel, combined submicroscopic deletion was identified in the patient's leukemic blasts.
  • The deletion spans chromosomal regions 5q31.1-5q31.3 and 8q23.2q24.

Implications:

  • This finding expands the understanding of genetic alterations in TMD beyond trisomy 21.
  • The identified novel deletion may serve as a potential biomarker for specific TMD subtypes.
  • Further research into these genetic aberrations could improve diagnostic and clinical decision-making for TMD.

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