Recurrent Second‐Trimester Euploid Pregnancy Loss Associated With Maternal–Paternal HLA Compatibility: Review Based on a Case Report of Immune‐Mediated Failure

Excessive maternal-paternal HLA compatibility may contribute to recurrent euploid pregnancy loss through disruption of maternal-fetal immune tolerance. This case-based review underscores the need for individualized immunologic assessment and further research into targeted therapies for alloimmune-mediated reproductive failure.