label: Anti-sp100 antibody positivity
label_lc: anti-sp100 antibody positivity
description: "The presence of autoantibodies (immunoglobulins) in the serum that react against sp100. Autoantibodies causing the MND pattern are directed against sp100, sp140, promyelocytic leukemia nuclear body proteins (PML) or ubiquitin-like modifier (SUMO) proteins, while in the punctate nuclear envelope pattern, the target antigens are gp210, nucleoporin-62 or laminin B receptor proteins."