CALR and Arthritis: ANAs can be useful to identify particular subsets of LE: Anti-dsDNA is associated with renal involvement, anti-Ro/SSA antibodies with photosensitive rash especially subacute lupus erythematosus (SCLE) as well as with serositis and haematological manifestations, anti-P ribosomal protein with neuropsychiatric disorders, and anti-RNP with arthritis, Raynaud's, and puffy fingers.