TNNT2 and familial dilated cardiomyopathy: Importantly, both the total number of CD68(+) macrophages and the number of CD68 cells directly adhered correlated negatively with cTnT in the serum of DCM patients (Spearman’s rho, r = −0.45, P < 0.001, and r = −0.31, P = 0.009, respectively) (Table 2).