1. Adjuvant therapy following neoadjuvant chemotherapy and surgery for oesophageal adenocarcinoma in patients with clear resection margins
- Author
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William R. C. Knight, Justin S. Waters, William H. Allum, R Bott, J Zylstra, David Cunningham, Nick Maisey, Michelle J. Wilkinson, Jesper Lagergren, James A. Gossage, Mark Kelly, Kerri Beckmann, Cara R. Baker, Elizabeth C Smyth, Andrew Davies, Mieke Van Hemelrijck, Bott, Rebecca K, Beckmann, K, Zylstra, Janine, Wilkinson, Michelle J, Knight, William RC, Baker, Cara R, Kelly, Mark, Maisey, Nick, Waters, Justin, Van Hemelrijck, Mieke, Smyth, Elizabeth C, Allum, William H, Lagergren, Jesper, Gossage, James A, Cunningham, David, and Davies, Andrew R
- Subjects
Surgical resection ,medicine.medical_specialty ,medicine.medical_treatment ,Oesophageal adenocarcinoma ,Adenocarcinoma ,030218 nuclear medicine & medical imaging ,Resection ,Cohort Studies ,surgery ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Adjuvant therapy ,Humans ,Radiology, Nuclear Medicine and imaging ,In patient ,Retrospective Studies ,Chemotherapy ,business.industry ,Margins of Excision ,adjuvant therapy ,Chemoradiotherapy, Adjuvant ,Hematology ,General Medicine ,Margin status ,medicine.disease ,Neoadjuvant Therapy ,Surgery ,Oncology ,Chemotherapy, Adjuvant ,030220 oncology & carcinogenesis ,business ,neoadjuvant chemotherapy - Abstract
Background: The role of adjuvant therapy in patients with oesophagogastric adenocarcinoma treated by neoadjuvant chemotherapy (NAC) and surgery is contentious. In UK practice, surgical resection margin status is often used to classify patients into receiving adjuvant treatment. This study aimed to assess any survival benefit of adjuvant therapy in patients with clear resection margins. Methods: This was a retrospective collaborative cohort study combining two prospectively collected UK institutional databases of patients with oesophageal adenocarcinoma. Multivariable Cox regression and propensity matched analyses were used to compare overall and recurrence-free survival according to the adjuvant treatment. Results: Of 374 patients with clear resection margins, 221 patients (59%) had no adjuvant treatment, 137 patients (37%) had adjuvant chemotherapy and 16 patients (4%) had adjuvant chemoradiotherapy. For patients who had received NAC (290, 76%), when adjuvant chemotherapy was compared to no adjuvant treatment, hazard ratios (HRs) favoured adjuvant chemotherapy but did not reach independent significance (overall survival [OS] HR 0.65 95% confidence interval [CI] 0.40–1.06; p.0.087). Responders to NAC (Mandard 1–3) were seemingly more likely to demonstrate a survival benefit from adjuvant chemotherapy (HR 0.42 95% CI 0.15–1.11; p.1.081). Conclusions: Although no independent survival benefit was observed, the point estimates favoured adjuvant treatment, predominantly in patients with chemo-responsive tumours. Refereed/Peer-reviewed
- Published
- 2021
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