Among all MIS-C patients in the IVIG + anakinra group, those with CV shock presented with high median troponin (0.05 vs. 0.02 ng/mL without CV shock; normal < 0.04 ng/mL, p = 0.03) and BNP (3339 vs. 1472 pg/mL without CV shock; normal < 1157 pg/mL, p = 0.04) (Supplemental Table S4). The gene discussed is NPPB; the disease is COVID-19–associated multisystem inflammatory syndrome in children.