IL1B and familial dilated cardiomyopathy: The results of serum inflammatory factors in each group showed that, compared with control group, the levels of TNF-α, IL-1β, and IL-6 in DCM group were significantly higher (P < 0.01), while the levels of TNF-α, IL-1β, and IL-6 in DCM + MTDP group and DCM + PLZ group were significantly lower (P < 0.01) compared with DCM group (Figure 2).