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- W2891949470 abstract "4030 Background: Prognostication for cancer patients is based upon factors determined at baseline and becomes less relevant over time. Conditional survival (CS) estimates future prognosis based upon survival to a specific time point after treatment. We analyzed CS for patients in the United Kingdom (UK) undergoing surgery and neoadjuvant chemotherapy (NAC) for gastro-esophageal junction (GEJ) or esophageal adenocarcinoma (EAC). Methods: 1409 patients with GEJ/EAC treated with NAC and surgical resection at 7 centers across the UK from 2002-2014 were identified. Clinicopathological and survival data was collected as part of the Oesophageal Cancer Clinical and Molecular Stratification (OCCAMS) consortium. A multivariable Cox survival model was used to analyze the association of factors such as node positivity (N+), lymphovascular invasion (LVI+), tumor differentiation, circumferential resection margin involvement (CRM+) and pathological response by tumor regression grade (TRG ≤2) with risk of relapse (RR) or death from time of surgery. Results: Of 1409 patients, 726 (51.5%) were aged <65 years, and 1195 (84.8%) were male. Hazard ratios (HR) for RR conditional on recurrence-free (RF) years to date are detailed below. N+ was the most robust predictor of relapse and mortality over time. LVI+ and moderate to poor differentiation influenced relapse in the first 2 years whereas CRM+ and TRG≤2 had their greatest effect in the year following surgery. Age, sex, and year of surgery had no association with RR or mortality. Similar patterns were observed for risk of death. Conclusions: CS provides a more dynamic estimate of future RR and survival among patients who have accrued survival time, especially in patients with high-risk features. CRM+ and LVI+ govern early survival events but as time from surgery increases these factors become less relevant. [Table: see text]" @default.
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- W2891949470 date "2017-05-20" @default.
- W2891949470 modified "2023-10-07" @default.
- W2891949470 title "Assessment of conditional survival probability in resected esophageal adenocarcinoma." @default.
- W2891949470 doi "https://doi.org/10.1200/jco.2017.35.15_suppl.4030" @default.
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