IFNB1 and cardiomyopathy: Furthermore, interferon-beta treatment may eliminate enterovirus and adenovirus and improve left ventricular function in immuno-competent patients with myocardial persistence of viral genomes and left ventricular dysfunction.20 There is a need to assess the effectiveness of interferon-beta treatment in African patients with cardiomyopathy, in the light of the discovery of the overwhelming presence of viral genomes in our patients.