cTnI can also serve as an early indicator of cardiovascular events such as acute heart failure or myocardial infarction (MI) that cause sudden and often severe myocardial injury [1,5], and can be combined with other test results such as electrocardiogram (ECG) reading to deliver more accurate diagnosis and improve risk stratification [5]. The gene discussed is TNNI3; the disease is myocardial infarction.