O uso de inibidores de checkpoint imunológico na imunoterapia do câncer gástrico

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Gustavo Vieira Lopes
Frederico Hahnemann Walker de Medeiros do Nascimento Filho
Hermínio Maurício da Rocha Sobrinho

Resumo

Objetivo: Abordar o uso de inibidores de checkpoint imunológico (ICI) na imunoterapia do câncer gástrico (CG). Revisão bibliográfica: A principal modalidade terapêutica do CG é o tratamento cirúrgico, sendo a única opção curativa. Entretanto, a imunoterapia com o uso de ICI tem sido uma nova estratégia de tratamento para neoplasias malignas. Os principais pontos de verificação imunológicos são: PD-1, PD-L1 e o CTLA-4; o bloqueio seletivo desses pontos de controle inibitórios pode permitir a ativação contínua de células T, promovendo respostas antitumorais eficazes. O estudo KEYNOTE-059 demonstrou que PD-L1 possui atividade antitumoral e foi bem tolerado em monoterapia e em combinação com quimioteraPIA. O estudo KEYNOTE-061 e 062 demonstraram aumento da taxa de sobrevida geral e maior perfil de segurança para os pacientes, com maior duração de resposta. O estudo CHECKMATE-0649 demonstrou que o Nivolumab e quimioterapia tiveram melhor sobrevida geral em relação a quimioterapia isolada (13,1 vs. 11,1 meses) com progressão livre de doença em 12 meses de 36%. Considerações finais: Ensaios clínicos indicaram resultados promissores com essa nova abordagem para o CG, porém, apesar disso, ainda existem limitações, como a irresponsividade em alguns casos e a presença de efeitos colaterais significantes.

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Como Citar
LopesG. V., do Nascimento FilhoF. H. W. de M., & SobrinhoH. M. da R. (2024). O uso de inibidores de checkpoint imunológico na imunoterapia do câncer gástrico. Revista Eletrônica Acervo Saúde, 24(6), e16684. https://doi.org/10.25248/reas.e16684.2024
Seção
Revisão Bibliográfica

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