VWF and congenital rubella syndrome: Compared to the patients with mild CRS after CAR‐T cell therapy, we found peak levels of VWF, Ang‐2, Ang‐2:Ang‐1 ratio, sE‐selectin and sICAM‐1 in the first month were higher in patients with severe CRS, while nadir level of Ang‐1 was lower (Figure 1).