ACE2 is highly expressed on cardiomyocytes (Han et al., 2020), and direct infection of cardiomyocytes by SARS-CoV-2 has been documented in patients (Tavazzi et al., 2020; Tian et al., 2020) and in cultured cardiomyocytes (Wong et al., 2020). Here, ACE2 is linked to infection.