Although there was no confirmed conclusion of intrauterine transmission of SARS-CoV-2 from infected mothers with COVID-19 to their fetuses, possible vertical transmission of SARS-CoV-2 was reported in which a neonate born to a mother with COVID-19 was found to have elevated IgM and IgG antibody levels and abnormal cytokine test results 2 h after birth (Dong et al., 2020). Here, CD40LG is linked to COVID-19.