Table 1

 Presence of autoantibodies against GM-CSF and IL3

SubjectsAnti-GM-CSF antibodiesAnti-IL3 antibodies
IgGIgMIgGIgM
Healthy controls0/72 (0%)1/72 (1.3%)1/72 (1.3%)1/72 (1.3%)
Rheumatoid arthritis0/20 (0%)0/20 (0%)0/20 (0%)1/20 (5%)
Felty’s syndrome1/32 (3.2%)2/32 (6.2%)1/32 (3.1%)2/32 (6.2%)