Prognostic significance of carcinoembryonic antigen combined with carbohydrate antigen 19-9 following neoadjuvant chemoradiotherapy in patients with locally advanced rectal cancer.

This combination of post-nCRT tumour markers can accurately predict the long-term survival of patients with LARC treated with nCRT and curative resection, and normalization of the combined tumour markers after either nCRT or surgery was associated with better survival.