A novel indicator of all-cause mortality in acute coronary syndrome: the CALLY index

Abstract

Aims This study aimed to identify the prognostic significance of the C-reactive protein-albumin-lymphocyte (CALLY) index for predicting all-cause mortality in acute coronary syndrome (ACS) patients who have undergone primary percutaneous coronary intervention (pPCI) for revascularization.Materials and methods 505 patients who presented with ACS and underwent pPCI were retrospectively included in this single center study. CALLY index and other five prognostic scores were calculated. The median follow-up was 40 months. All-cause mortality was defined as the primary endpoint.Results The median age of the patients was 59 years, 23.4% were female. The CALLY index was categorized into low (<0.7) and high (≥0.7). Age (p = 0.038), concomitant atrial fibrillation (p = 0.023), previous CABG (p = 0.001), ACE-I/ARB/ARNI use (p = 0.015), diuretic use (p = 0.021), and a low-CALLY index (p < 0.001) were identified as independent predictors of all-cause mortality in multivariate cox regression analysis. When compared to other prognostic scores according to AUC in ROC analysis, the CALLY index demonstrated the best ability to predict all-cause mortality. Additionally, patients with a high-CALLY index exhibited significantly better survival outcomes compared to those with a low-CALLY index (log-rank:p < 0.001).Conclusions CALLY index can be utilized as a novel prognostic score for predicting all-cause mortality in ACS patients who have undergone pPCI.