Ironically, patients with SjS would not usually be tested for HTLV-1 unless myelopathy occurred and patients with HTLV-1 infection would not be tested for SjS unless myelopathy occurred; some patients with SjS test negative for anti-SSA or anti-SSB autoantibodies and may lead to a negative diagnosis when SjS is present. This evidence concerns the gene SSB and Schwartz-Jampel syndrome.