Central nervous system embryonal tumors with EWSR1-PLAGL1 rearrangements reclassified as INI-1 deficient tumors at relapse.
J Neurooncol
; 168(2): 367-373, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38639853
ABSTRACT
PURPOSE:
Central nervous system (CNS) embryonal tumors are a diverse group of malignant tumors typically affecting pediatric patients that recently have been better defined, and this paper describes evolution of a unique type of embryonal tumor at relapse.METHODS:
Two pediatric patients with CNS embryonal tumors with EWSR1-PLAGL1 rearrangements treated at Arkansas Children's Hospital with histopathologic and molecular data are described.RESULTS:
These two patients at diagnosis were classified as CNS embryonal tumors with EWSR1-PLAGL1 rearrangements based on histologic appearance and molecular data. At relapse both patient's disease was reclassified as atypical teratoid rhabdoid tumor (ATRT) based on loss of INI-1, presence of SMARCB1 alterations, and methylation profiling results.CONCLUSION:
CNS embryonal tumors with EWSR1-PLAGL1 rearrangements acquire or include a population of cells with SMARCB1 alterations that are the component that predominate at relapse, suggesting treatment aimed at this disease component at diagnosis should be considered.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias do Sistema Nervoso Central
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Neoplasias Embrionárias de Células Germinativas
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Proteína EWS de Ligação a RNA
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Proteína SMARCB1
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Recidiva Local de Neoplasia
Limite:
Female
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Humans
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Infant
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Male
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article