BTG3 and rheumatoid arthritis: A complete work-up led to the discovery of positive anti-cyclic citrullinated peptide (anti-CCP) antibodies, anti-double-stranded (anti-DS) DNA antibodies, and ANA, leading to the diagnosis of Rhupus Syndrome, an overlap of systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA).