Keywords: Alzheimer's disease (AD); Anti dense fine speckled (DFS) antibodies; Anti-neutrophil cytoplasmic antibodies (ANCA); Anti-nuclear antibodies (ANA); Anti-phospholipid syndrome (APS); Anti–citrullinated protein antibody (ACPA); Autoimmunity; B regulatory (Breg) cells; Catastrophic antiphospholipid syndrome (CAPS); Genome-wide association studies (GWAS); Human papilloma virus (HPV); Intra venous immunoglobulins (IVIG); Juvenile idiopathic arthritis (JIA); Microbiome; Mosaic of autoimmunity; Paraneoplastic neurological syndrome; Rheumatoid arthritis (RA); Rheumatoid factors (RF); Systemic lupus erythematosus (SLE); Vitamin D.