At the same time, by the VDR haplogenotypes, the SLE group with the AAC/GAT haplogenotype and clinical activity showed lower serum calcidiol (12.3 ng/mL, p = 0.03) compared to the SLE in remission carriers of the same haplogenotype (21.4 ng/mL) (Figure 3b). This evidence concerns the gene VDR and systemic lupus erythematosus.