PRB1 and myositis disease: The remaining cases with a positive myositis profile included individuals with anti-Jo1 (3), anti-SAE1 (1), anti-NXP2 (1), anti-PM/Scl75 (3), anti-Mi2a (2), antiMi2b (1), anti-RNP (1), and anti-Scl100 (1) antibodies.