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Capecitabine and temozolomide (CAPTEM) is effective in metastatic well-differentiated gastrointestinal neuroendocrine tumors.
Journal of Digestive Diseases 2022 August
OBJECTIVE: The aim of this study was to investigate the outcomes and prognostic factors of patients with metastatic gastrointestinal neuroendocrine tumor (mGI-NET) who were treated with capecitabine and temozolomide (CAPTEM) and somatostatin receptor ligand (octreotide or lanreotide).
METHODS: Clinicopathological characteristics and treatment outcomes of 43 patients with mGI-NET were retrospectively evaluated. Overall survival (OS) and progression-free survival (PFS) were evaluated using Kaplan-Meier curve. Cox-regression analysis was used to assess prognostic variables.
RESULTS: There were 23 (53.5%) men and 20 women (46.5%) with a median age of 59 years (range 27-85 y). Patients were given octreotide (86.0%) or lanreotide (14.0%) with CAPTEM. In patients with well-differentiated mGI-NET, median PFS was 17.4 months, and the disease control rate was 71.1%. Patients with poorly differentiated mGI-NET showed no response, and the median PFS was 4.5 months. Four (9.3%) discontinued the medication due to toxicity. Anemia (37.2%), thrombocytopenia (25.6%), and fatigue (16.3%) were the most prevalent adverse events. The 5-year OS rate was 61.0% in all patients during a median follow-up of 33.8 months. In multivariate analysis, age (P = 0.014) and tumor differentiation (P < 0.001) were statistically significant factors for OS.
CONCLUSIONS: CAPTEM plus somatostatin receptor ligands were efficacious and well tolerated in individuals with well-differentiated mGI-NET. However, it was ineffective for those with poorly differentiated tumors. Age of 60 years or elder and poorly differentiated tumors were related to a poor patient prognosis.
METHODS: Clinicopathological characteristics and treatment outcomes of 43 patients with mGI-NET were retrospectively evaluated. Overall survival (OS) and progression-free survival (PFS) were evaluated using Kaplan-Meier curve. Cox-regression analysis was used to assess prognostic variables.
RESULTS: There were 23 (53.5%) men and 20 women (46.5%) with a median age of 59 years (range 27-85 y). Patients were given octreotide (86.0%) or lanreotide (14.0%) with CAPTEM. In patients with well-differentiated mGI-NET, median PFS was 17.4 months, and the disease control rate was 71.1%. Patients with poorly differentiated mGI-NET showed no response, and the median PFS was 4.5 months. Four (9.3%) discontinued the medication due to toxicity. Anemia (37.2%), thrombocytopenia (25.6%), and fatigue (16.3%) were the most prevalent adverse events. The 5-year OS rate was 61.0% in all patients during a median follow-up of 33.8 months. In multivariate analysis, age (P = 0.014) and tumor differentiation (P < 0.001) were statistically significant factors for OS.
CONCLUSIONS: CAPTEM plus somatostatin receptor ligands were efficacious and well tolerated in individuals with well-differentiated mGI-NET. However, it was ineffective for those with poorly differentiated tumors. Age of 60 years or elder and poorly differentiated tumors were related to a poor patient prognosis.
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