“…Anti-C1q circulating antibodies are found in more than half of the patients and are, along with low C1q levels, considered to be the marker of the disease [ 5 , 6 , 11 , 12 ]. Apart from these, other factors that could possibly activate C1q are drugs, like the anti-TNF factor etanercept [ 14 ], viruses, like Epstein-Barr and Hepatits B,C [ 15 ] and other, non-identified autoantibodies [ 15 , 16 ]. Unfortunately, we could not test for anti-C1q antibodies, as the assay is not available not only in out hospital, but in any public laboratory in Greece.…”