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Table 1 Prevalence of anti-Ku p70/p80 in patient groups as detected with immunoblot analysis

From: International cohort study of 73 anti-Ku-positive patients: association of p70/p80 anti-Ku antibodies with joint/bone features and differentiation of disease populations by using principal-components analysis

Diagnosis Number of patients Ku p70 Ku p80 Ku p70 only Ku p80 only Ku p70 and Ku p80 Ku pXX None
PM/DM 6 4 (67%) 3 (50%) 2 (33%) 1 (17%) 2 (33%) 1 (17%)
RA 8 7 (88%) 6 (75%) 2 (25%) 1 (13%) 5 (63%) 0 (0)
SLE 13 10 (77%) 11 (84%) 1 (8%) 2 (15%) 9 (69%) 1 (8%)
SS 2 2 (100%) 2 (100%) 0 (0) 0 (0) 2 (100%) 0 (0)
SSc 21 17 (81%) 11(52%) 8 (38%) 2 (10%) 9 (43%) 2 (10%)
UCTD 22 20 (91%) 15 (68%) 6 (27%) 1 (5%) 14 (64%) 1 (5%)
Total 72 60 (83%) 48 (67%) 19 (26%) 7 (10%) 41 (57%) 5 (7%)
  1. Numbers of patients in each group are indicated, followed by the percentage. Ku pXX.none, neither anti-Ku p70 nor anti-Ku p80 present; PM/DM, polymyositis/dermatomyositis; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; SS, Sjögren syndrome; SSc, systemic sclerosis; UCTD, undifferentiated connective tissue disease.