Development of a prognostic score for recommended TACE candidates with hepatocellular carcinoma: a multicentre observational study.

•First prognostic model specifically developed for ideal TACE candidates.•The individualized prediction score is presented as the sum of tumour size (cm) and number.•With cut-offs of 6 and 12, the score can stratify these patients into 3 prognostic strata.•The score outperformed other available models in performance and discrimination.•The score is advantageous for easy-to-use and individualized prediction.