Fig. 1: BCKDK expression in TNBC and its prognostic significance.

a–c Evaluation of BCKDK mRNA expression in TNBC and normal breast tissues using TCGA and GEO databases (GSE21653 and GSE31448). d, e Representative immunohistochemistry (IHC) images (×200, Scale bar: 50 μm) and scores of BCKDK in tumour and adjacent normal tissues for 71 patients with TNBC. f–h Kaplan–Meier analysis in Kaplan–Meier plotter for relapse-free survival and our data for disease-free survival (DFS) and overall survival (OS) with varying BCKDK expression in TNBC. **P < 0.01, ***P < 0.001.