Of the 132 adolescents with T1D and the 71 healthy controls, 39 (29.5%) and 19 (26.8%) participants with a negative pre-vaccination SARS-CoV-2 RT-PCR test were excluded respectively, because of their pre-vaccination positive SARS-CoV-2 IgM and/or IgG tests results (Figures 1, 2). This evidence concerns the gene CD40LG and type 1 diabetes mellitus.