APOH and spontaneous abortion: Anti-β2GpI titer ≥10 UA/mL was associated with an increased risk of miscarriage (OR 5.19; [0.99–28.4]; p = 0.049) in multivariate analysis (model adjusted on sex, age, disease subtype, tobacco use, dyslipidemia, BMI, gammaglobulin level, ACA positivity, and anti-topo I positivity) (Table 4, Supplementary Tables 3, 4).