CRP and hypertriglyceridemia: Although an MR study showed that genetically predicted lower counts of basophils and myeloid white blood cells had causal effects on COVID-19 severity [47], an observational study found positive correlations of higher leukocyte counts and CRP with TGs in COVID-19 patients and suggested that hypertriglyceridemia might have a direct effect on COVID-19 severity due to an enhanced inflammatory response [11].