Patients who experienced hepatomegaly post-COVID-19 vaccination were more likely to have thrombocytopenia (n = 2) [24, 100], high C-reactive protein (n = 2) [88, 100], high erythrocyte sedimentation rate (n = 2) [24, 88], and high lactate dehydrogenase (n = 2) [24, 100]. This evidence concerns the gene CRP and COVID-19.