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Advisor(s)
Abstract(s)
Contexto: O adenocarcinoma ductal do pâncreas (ACDP) é a quinta causa de morte por neoplasia na Europa. As opções terapêuticas são limitadas e a sobrevivência é baixa. A cirurgia é a única cura possível, mas a recorrência é comum.
Objetivo: Esta revisão sistemática e meta-análise visam avaliar o valor do DNA tumoral circulante (ctDNA) presente em biópsia líquida pré e pós-cirurgia como biomarcador de prognóstico em doentes com adenocarcinoma do pâncreas.
Métodos: Efectuou-se uma revisão sistemática e meta-análise de estudos identificados na Medline (via PubMed) e Web of Science.
Principais Outcomes: Os outcomes primários incluem a sobrevivência livre de doença (DFS) e sobrevivência global (OS).
Resultados: Identificámos 18 estudos (965 doentes) para análise. A presença de ctDNA pré-operatória foi significativamente associada a menor DFS (HR: 2.08; 95% CI: 1.63 - 2.65, p<0.00001) e OS (HR: 2.31; 95% CI: 1.66 - 3.22; p<0.00001) em 9 e 10 estudos, respetivamente. A positividade do ctDNA pós-operatório também se correlacionou com menor DFS (HR: 3.29; 95% CI: 2.10 - 5.15; p<0.00001) e OS (HR: 3.42; 95% CI: 2.06 - 5.67; p<0.00001) em 11 e 9 estudos, respetivamente.
Conclusão: Tanto o ctDNA pré-operatório como o pós-operatório são marcadores prognósticos significativos em doentes com ACDP submetidos a cirurgia. A monitorização do ctDNA pode auxiliar na personalização do tratamento, especificamente na seleção de doentes para terapêutica neoadjuvante, cirúrgica e adjuvante. Estudos futuros devem focar-se na padronização dos métodos de detecção e na validação em populações diversas.
Background: Pancreatic ductal adenocarcinoma (PDAC) is the fifth leading cause of death by neoplasms in Europe. Therapeutic options are limited and survival is poor. Surgery is the only possible cure, but recurrence is common. Objective: This systematic review and meta-analysis aims to assess the value of circulating tumour DNA (ctDNA) present in pre and post-surgery liquid biopsy as a prognostic biomarker for recurrence and survival in patients with pancreatic adenocarcinoma. Methods: We used a systematic review and meta-analysis of selected studies identified in Medline (via PubMed) and Web of Science. Main Outcomes: Primary outcomes include disease-free survival (DFS) and overall survival (OS). Results: We identified 18 studies (965 patients) for analysis. The presence of preoperative ctDNA was significantly associated with lower DFS (HR: 2.08; 95% CI: 1.63 - 2.65, p<0.00001) and OS (HR: 2.31; 95% CI: 1.66 - 3.22; p<0.00001) in 9 and 10 studies, respectively. Postoperative ctDNA positivity was also correlated with lower DFS (HR: 3.29; 95% CI: 2.10 - 5.15; p<0.00001) and OS (HR: 3.42; 95% CI: 2.06 - 5.67; p<0.00001) in 11 and 9 studies, respectively. Conclusion: Both preoperative and postoperative ctDNA are significant prognostic markers in PDCA patients undergoing surgery. Monitoring ctDNA can help personalise treatment, specifically in the selection of patients for neoadjuvant, surgical and adjuvant therapy. Future studies should focus on standardising detection methods and validating them in diverse populations.
Background: Pancreatic ductal adenocarcinoma (PDAC) is the fifth leading cause of death by neoplasms in Europe. Therapeutic options are limited and survival is poor. Surgery is the only possible cure, but recurrence is common. Objective: This systematic review and meta-analysis aims to assess the value of circulating tumour DNA (ctDNA) present in pre and post-surgery liquid biopsy as a prognostic biomarker for recurrence and survival in patients with pancreatic adenocarcinoma. Methods: We used a systematic review and meta-analysis of selected studies identified in Medline (via PubMed) and Web of Science. Main Outcomes: Primary outcomes include disease-free survival (DFS) and overall survival (OS). Results: We identified 18 studies (965 patients) for analysis. The presence of preoperative ctDNA was significantly associated with lower DFS (HR: 2.08; 95% CI: 1.63 - 2.65, p<0.00001) and OS (HR: 2.31; 95% CI: 1.66 - 3.22; p<0.00001) in 9 and 10 studies, respectively. Postoperative ctDNA positivity was also correlated with lower DFS (HR: 3.29; 95% CI: 2.10 - 5.15; p<0.00001) and OS (HR: 3.42; 95% CI: 2.06 - 5.67; p<0.00001) in 11 and 9 studies, respectively. Conclusion: Both preoperative and postoperative ctDNA are significant prognostic markers in PDCA patients undergoing surgery. Monitoring ctDNA can help personalise treatment, specifically in the selection of patients for neoadjuvant, surgical and adjuvant therapy. Future studies should focus on standardising detection methods and validating them in diverse populations.
Description
Trabalho Final do Curso de Mestrado Integrado em Medicina, Faculdade de Medicina, Universidade de Lisboa, 2024
Keywords
Biópsia líquida DNA tumoral circulante Adenocarcinoma ductal do pâncreas Meta-análise
