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El sarcoma mieloide muestra una alta frecuencia de mutaciones que activan la vía MAPK/ERK y asociación con la
Dominik Nann1, Tim-Colin Schade1, Mathis Overkamp1
1Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center South West, Tuebingen, Germany.
The journal of pathology. Clinical research
|September 4, 2025
Resumen
El sarcoma mieloide (EM) muestra con frecuencia mutaciones y activación de la vía MAPK/ERK. El análisis genético revela la evolución clonal y la asociación con la hematopoyesis clonal en pacientes ancianos.
Área de la Ciencia:
- Hematología
- En el campo de la oncología
- Biología molecular
Sus antecedentes:
- El sarcoma mieloide (MS) es un tumor extramedular de los blastos mieloides.
- Los datos genéticos sobre la EM, especialmente los casos de novo, son limitados.
- Comprender la genética de la EM es crucial para el diagnóstico y el tratamiento.
Objetivo del estudio:
- Para investigar el paisaje genético del sarcoma mieloide.
- Identificar mutaciones y vías comunes involucradas en el desarrollo de la EM.
- Para comparar los perfiles genéticos de la EM con las neoplasias mieloides anteriores y la hematopoyesis clonal.
Principales métodos:
- Secuenciación dirigida de próxima generación (NGS) de 41 muestras de Estados miembros.
- Detección de fusión basada en ARN y perfiles de expresión génica (GEP).
- Análisis de las biopsias de médula ósea antes y después del trasplante.
Principales resultados:
- TET2, NPM1 y NRAS fueron los genes mutados con mayor frecuencia.
- El 74% de los casos de EM presentaron mutaciones en la vía MAPK/ ERK.
- La esclerosis múltiple mostró distintas alteraciones genéticas en comparación con las neoplasias mieloides y la hematopoyesis clonal.
Conclusiones:
- El sarcoma mieloide se caracteriza por alteraciones frecuentes de las vías MAPK/ERK.
- En la EM se observa la evolución clonal y la asociación con la hematopoyesis clonal.
- El perfil genético ayuda a comprender la patogénesis de la EM y la estratificación del paciente.
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