They further combined this CXR score in a multivariable model including variables of sex, chronic obstructive lung disease, symptom duration, neutrophil count, C-reactive protein level, lactate dehydrogenase level, and distribution of lung disease (diffuse vs. peripheral) and introduced the “Dutch COVID-19 risk model” for predicting critical illness. The gene discussed is CRP; the disease is chronic obstructive pulmonary disease.