TRIM21 and immune system disorder: These retained variables encompassed age, history of previous miscarriages, rheumatological-immune disease comorbidities, number of underlying medical conditions, number of pregnancy complications, antinuclear antibodies, anti-SSA antibodies, anti-RO52 antibodies, total number of medications during pregnancy, hydroxychloroquine, glucocorticosteroids, aspirin, low-molecular heparin, progesterone, and number of other medications used.