Tian-Xing Wu

Lower HLA-B27 positivity and heterogeneous late-onset case proportions across axial spondyloarthritis cohorts: a systematic review and meta-analysis

Lower HLA-B27 positivity was the most consistent association but relied on four unadjusted comparisons and cannot be interpreted causally or diagnostically, but heterogeneity was high, the prediction interval wide, and certainty very low.