CD40LG and COVID-19: In a cohort of patients with IBD, the rate of positive results for anti-SARS-CoV-2 antibodies (approximately 4.6% for IgG and IgM, and 6% for IgA) was found higher than that in healthcare professionals without inflammatory diseases (approximately 1.6% for IgG and IgM, and 1% for IgA); interestingly, no SARS-CoV-2-infected patients with IBD developed symptomatic COVID-19 (Łodyga et al., 2021).