CALR and systemic lupus erythematosus: The test results were negative for the lupus serology panel (anti-double-stranded DNA [anti-dsDNA], anti–Sjögren's-syndrome-related antigen A [anti-SSA/Ro], anti–Sjögren's-syndrome-related antigen B [anti-SSB/La], anti-nuclear ribonucleoprotein [anti-nRNP], and anti-phospholipid syndrome antibodies).