CRTAC1 and COVID-19: Plasma CRTAC1 concentration correlated inversely with acute physiological assessment and chronic health evaluation (APACHE) II, sequential organ failure assessment (SOFA), simplified acute physiology score (SAPS) II, and World Health Organization (WHO) scores of disease or COVID‐19 severity 19 (Izcovich et al., 2020; Wilfong et al., 2021) and directly with number of ventilation‐free or hospital‐free days (HFD‐45) through Day 45 after entry, that is, with speed of recovery and discharge from the hospital (Table 2 and Figure 2d).