Adjuvant Treatment for the Elderly Patient with Resected Gallbladder Cancer: a SEER-Medicare Analysis
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Background: In patients with resected gallbladder cancer (GBC), the role of adjuvant chemotherapy (aCT) remains ill-defined, especially in elderly patients. This study evaluates the value of aCT in elderly patients with GBC and assesses response according to tumor stage.
Methods: Patients of ≥65 years of age with resected GBC diagnosed from 2004-2015 were identified using a Surveillance, Epidemiology and End Results (SEER)/Medicare linked database. After propensity score matching, survival of patients treated with aCT was compared to survival of patients who did not receive aCT using Kaplan-Meier and Cox proportional hazards analysis.
Results: Of 2,179 patients with resected GBC, 876 (25%) received aCT. In the full cohort of 810 propensity-score matched patients, survival did not differ between patients treated with aCT (17.6 months ) and without aCT (19.5 months, P=0.7720). Subgroup analysis showed that survival was significantly better after aCT in T3/T4 disease (12.3 7.2 months, P=0.013). Interaction analysis showed that benefit of aCT was primarily seen in combined T3/T4, node-positive disease (HR 0.612 , P=0.006).
Conclusions: In this large cohort of elderly patients with resected GBC, aCT was not associated with increased survival. However, aCT may provide a survival benefit in T3/4, node-positive disease.
Cheng M, Zhou X, Xue Y, Zhou E, Hu J, Xu J J Gastrointest Oncol. 2024; 15(3):1214-1223.
PMID: 38989400 PMC: 11231859. DOI: 10.21037/jgo-24-358.
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Gbolahan O, Zhi X, Liu Y, Shah M, Kooby D, Alese O JAMA Netw Open. 2024; 7(1):e2351502.
PMID: 38206623 PMC: 10784855. DOI: 10.1001/jamanetworkopen.2023.51502.