[Tyrosine kinase receptor gene fusion: A series of four cases of infantile-type hemispheric glioma]. / Gènes de fusion à activité tyrosine kinase : une série de quatre cas de gliome hémisphérique infantile.
Ann Pathol
; 43(6): 462-474, 2023 Nov.
Article
en Fr
| MEDLINE
| ID: mdl-37635016
ABSTRACT
INTRODUCTION:
Infant-type hemispheric gliomas belong to pediatric-type diffuse high-grade gliomas according to the 2021 WHO classification of central nervous system tumors. They are characterized by tyrosine kinase gene rearrangements (NTRK1/2/3, ALK, ROS1, MET). The aim of the study was to describe the clinical, histopathologic, and molecular characteristics of such tumors, and to provide a review of the literature. PATIENTS ANDMETHODS:
This retrospective series comprises four cases of infant-type hemispheric glioma diagnosed at Angers University Hospital between 2020 and 2022. The diagnosis was suspected based on morphology and immunohistochemistry and was confirmed by molecular biology techniques.RESULTS:
The most common clinical sign was raised intracranial pressure. Imaging showed a large cerebral hemispheric tumor with contrast enhancement. Microscopic examination revealed diffuse astrocytoma with high-grade features, sometimes with neuronal or pseudo-ependymal differentiation. Identification of a gene fusion involving a tyrosine kinase gene allowed to make a definitive diagnosis of infant-type hemispheric glioma. DISCUSSION ANDCONCLUSION:
Infant-type hemispheric gliomas are rare and present as large cerebral hemispheric tumors in very young children. Searching for a tyrosine kinase gene fusion should be systematic when dealing with a high-grade glioma in an infant. Importantly, these gene fusions are therapeutic targets. The impact of targeted therapies on patient survival should be evaluated in future prospective studies.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias Encefálicas
/
Glioma
Tipo de estudio:
Observational_studies
/
Prognostic_studies
Límite:
Humans
/
Infant
Idioma:
Fr
Revista:
Ann Pathol
Año:
2023
Tipo del documento:
Article