BTG3 and autoimmune disease: A retrospective analysis was performed to explore the combinatory efficacy of five drugs (aspirin enteric‐coated tablets, hydroxychloroquine sulfate, methylprednisolone tablets, calcitriol capsules, and vitamin D calcium) in treating RSA patients with antinuclear antibody (ANA)‐positive but could not be diagnosed with autoimmune diseases (AID) through assessment of treatment‐related impact on subsequent pregnancy outcomes and adverse reactions.