TY - JOUR T1 - Semiquantitative analysis of line blot assay for myositis-specific and myositis-associated antibodies: a better performance? JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis DO - 10.1136/annrheumdis-2019-215884 SP - annrheumdis-2019-215884 AU - Ilaria Cavazzana AU - Micaela Fredi AU - Franco Franceschini Y1 - 2019/07/15 UR - http://ard.bmj.com/content/early/2019/07/15/annrheumdis-2019-215884.abstract N2 - We read with interest the letter of Espinosa-Ortega F et al1 comparing line immunoblot assay (LIA) and immunoprecipitation (IP) performance in the detection of myositis-specific antibody (MSA) and myositis-associated antibody (MAA). The authors found a global moderate agreement between tests, with a very good agreement for anti-signal recognition particle (SRP), anti-Ku and anti-small ubiquitin-like modifier activating enzyme (SAE1); a good agreement for anti-hystidil-tRNA synthetase (Jo-1) and a moderate agreement for anti-PM/Scl, anti-melanoma differentiation-associated gene 5 (MDA5) and anti-transcription intermediary factor 1 (TIF1 gamma). … ER -