Case Report
A Case of Severe Seronegative Inflammatory Arthritis due to Nivolumab and Review of the Literature
| Immunology/serology | Reference range | Result |
| ANA | Negative | Positive | ANA titer | Negative | 1 : 160 | ANA pattern | Unknown | Nucleolar | DNA antibody | <30 IU/mL | 22 | RNP antibody | <1.0 | <0.2 | Ribosomal RNP | <1.0 | <0.2 | SSB antibody | <1.0 | <0.2 | Sm antibody | <1.0 | <0.2 | SSA antibody | <1.0 | <0.2 | Scleroderma Ab, IgG | <1.0 | <0.2 | Jo 1 antibody | <1.0 | <0.2 | Chromatin antibody | <1.0 | <0.2 | Centromere Ab | <1.0 | <0.2 | Rheumatoid factor | <16 IU/mL | <10 | CCP antibody, IgG | <20 units | <15 |
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ANA: antinuclear antibody; DNA: deoxyribonucleic acid; RNP: ribonucleoprotein; SSB: anti-Sjögren’s syndrome type B; SSA: anti-Sjögren’s syndrome type B; Ab: antibody; CCP: cyclic citrullinated peptide; IU: international unit.
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