CALR and systemic lupus erythematosus: While there was no breakdown of specific Ro52 and Ro60 autoantibody seropositivity by race, this study found a higher percent of pre-diagnostic SSA autoantibody seropositivity than traditionally reported at SLE diagnosis (47%) which may have been explained by the disproportionately high percentage of black subjects (62%) in the study population derived from the DOD [19].