A meta-analysis of 19 observational studies involving almost 3000 patients with confirmed COVID-19 showed that the most common laboratory findings reported were decreased serum albumin (76% prevalence), increased C-reactive protein (CRP) (58%), increased lactate dehydrogenase (LDH) (57%), lymphopenia (43%), and elevated erythrocyte sedimentation rate (ESR) (42%) [39]. This evidence concerns the gene CRP and lymphopenia.