In terms of multivariate analyses, higher H19 (HR = 1.96, 95% CI: 1.01‐3.85, P = 0.048), miR‐130a‐3p (HR = 2.44, 95% CI: 1.35‐4.35, P = 0.003) or miR‐17‐5p expression (HR = 2.94, 95% CI: 1.54‐5.56, P = 0.001), larger tumor size (HR = 2.21, 95%CI: 1.19‐4.11, P = 0.012), invasive serous layer (HR = 2.67, 95%CI: 1.38‐5.16, P = 0.004), metastatic lymph node (HR = 2.26, 95%CI: 1.12‐4.58, P = 0.024) and TNM III+IV stage (HR = 3.22, 95%CI: 1.61‐6.45, P = 0.001) could predict the poor prognosis of cardiac cancer patients (Table 3, Figure 1D‐F). Here, H19 is linked to neoplasm.