PDCD1 and myocarditis: And in some situations, doctors will make the diagnosis of PD-1/PD-L1 associated myocarditis, according to the cardiac imaging performance, clinical symptoms and the usage of PD-1/PD-L1 inhibitors (Gibson et al., 2016; Mehta et al., 2016; Semper et al., 2016; Frigeri et al., 2018; Monge et al., 2018; Thibault et al., 2018; Agrawal et al., 2019; Charles et al., 2019; Esfahani et al., 2019; Khoury et al., 2019; Salem et al., 2019).