Furthermore, we identified a lower mean generic HRQoL (48.7, SD 21.6) as measured with the EQ-5D VAS in contrast to a study investigating differences regarding NT5c1A antibody (Mup44, CN1A) in IBM (mean seropositive 55; seronegative 65, respectively) [45], whereby the NT5c1A seronegative patients showed a comparable mean age and disease duration. Here, NT5C1A is linked to inclusion body myositis.