Estudio de los mecanismos de resistencia a anticuerpos biespecíficos dirigidos frente al antígeno carcinoembrionario en organoides derivados de pacientes con cáncer colorrectal
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2024
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10/01/0224
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Universidad Complutense de Madrid
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Abstract
El cáncer colorrectal (CCR) es una enfermedad muy frecuente en el mundo occidental y presenta una elevada tasa de mortalidad. La supervivencia de los pacientes con CCR metastásico (CCRm) se ha incrementado de manera significativa con la introducción de nuevos tratamientos dirigidos en las últimas décadas. A pesar de estos avances, el CCR avanzado se sigue considerando una enfermedad incurable, por lo que es esencial continuar desarrollando nuevos tratamientos que permitan mejorar la calidad de vida y la supervivencia de estos pacientes. La inmunoterapia con inhibidores de puntos de control inmunitario ha demostrado ser ineficaz en CCR avanzado, excepto en el subgrupo de pacientes que presentan el fenotipo de inestabilidad de microsatélites (MSI, del inglés microsatellite instability) (15% de los CCR,<5% de los CCRm), tumores con una alta carga mutacional y muy inmunogénicos. Pero la gran mayoría de los CCR no son MSI y, por lo tanto, no responden a estrategias de inmunoterapia dirigidas a reactivar una respuesta inmune que previamente no se ha generado...
Colorectal cancer (CRC) is a highly prevalent disease in the Western world and has a high mortality rate. The survival of patients with metastatic CRC (mCRC) has significantly improved with the introduction of new targeted treatments in recent decades. Despite theseadvances, advanced CRC is still considered an incurable disease, so it is essential to continue developing new treatments that can improve the quality of life and survival of these patients. Immunotherapy with immune checkpoint inhibitors has been shown to be ineffective in advanced CRC, except in the subgroup of patients who have the microsatellite instability (MSI) phenotype (15% of CRC, <5% of mCRC), which are tumors with a high mutational load and high immunogenicity. However, most CRC cases are not MSI and, therefore, do not respond to immunotherapy strategies aimed at reactivating an immune response that has not been generated previously...
Colorectal cancer (CRC) is a highly prevalent disease in the Western world and has a high mortality rate. The survival of patients with metastatic CRC (mCRC) has significantly improved with the introduction of new targeted treatments in recent decades. Despite theseadvances, advanced CRC is still considered an incurable disease, so it is essential to continue developing new treatments that can improve the quality of life and survival of these patients. Immunotherapy with immune checkpoint inhibitors has been shown to be ineffective in advanced CRC, except in the subgroup of patients who have the microsatellite instability (MSI) phenotype (15% of CRC, <5% of mCRC), which are tumors with a high mutational load and high immunogenicity. However, most CRC cases are not MSI and, therefore, do not respond to immunotherapy strategies aimed at reactivating an immune response that has not been generated previously...