TRIM21 and alopecia: Alopecia was associated with anti-dsDNA (P = 0.020), anti-Sm (P = 0.020) and anti-SmRNP (P = 0.034) antibodies, Reynold’s phenomenon with anti-Sm (P = 0.007) and anti-SmRNP (P < 0.001) antibodies, and serositis with anti-dsDNA (P = 0.014), anti-Ro52 (P = 0.047) and anti-centromere (P = 0.016) antibodies.