Folinic Acid Supplementation During Pregnancy in Two Women with Folate Receptor Alpha Autoantibodies: Potential Prevention of Autism Spectrum Disorder in Offspring

This report presents two cases of pregnant women positive for folate receptor alpha (FRα) autoantibodies who received folinic acid supplementation. Both had previously given birth to children diagnosed with autism spectrum disorder (ASD). In subsequent pregnancies, folinic acid was administered preconceptionally and continually throughout gestation. The resulting offspring, monitored up to three years of age, exhibited typical neurodevelopment with no signs of ASD. These cases suggest that folinic acid supplementation during pregnancy may mitigate the risk of ASD in children born to mothers with FRα autoantibodies.