TNNI3 and breast cancer: Furthermore, measuring specific biomarkers in BC patients’ serum during or after RT could contribute to the prediction, diagnosis, and risk assessment of cardiovascular disease [40].Studies have shown that the appropriate biomarkers in patients undergoing RT include cardiac troponin T (cTnT), cardiac troponin I, and natriuretic peptides such as B-type natriuretic peptide (BNP) and N-terminal pro B-type natriuretic peptide (NT-proBNP) (cTnI).