TRIM33 and dermatomyositis: The capillary drop out, a feature previously noticed in DM (45) may be caused by C5b‐9‐driven angiodestruction in TIF‐1γ+ patients (5, 57) and may well explain the significant upregulation of VEGF mRNA in the muscle tissue of TIF‐1γ+ patients in contrast to that in anti‐Mi‐2+ patients, which is most likely the result of increased levels of hypoxia in the perifascicular region (58, 59, 60, 61).