Exploring Lymphocyte Immunotherapy as a Treatment for Recurrent Miscarriage: A Case Study of Immune System Modulation and Positive Clinical Pregnancy Rate

This case study reviews the use of Lymphocyte Immunotherapy (LIT) in a 28-year-old female patient who had a history of recurrent first-trimester miscarriages and failed intracytoplasmic sperm injection (ICSI) cycles. She had good ovarian reserve, normal semen analysis, and negative autoimmune tests but experienced four early miscarriages, which suggested an immune-mediated issue. LIT was chosen as a treatment option to address the possibility of immune system dysregulation contributing to pregnancy loss. LIT is the process of infusing the husband's lymphocytes to promote maternal tolerance of paternal antigens, reducing the possibility of immune foetal rejection. A received LIT was performed six weeks prior to a fresh ICSI cycle, with successful fertilization and transfer of embryos. There is evidence that positive outcomes occurred in serial ultrasounds and hormone levels at 6, 8, and 12 weeks with subsequent birth at term of a healthy baby. This case points to the possibility of using LIT as a therapeutic intervention in the treatment of unexplained recurrent miscarriage in patients who had previously failed previous assisted reproductive treatments. While the mechanism of action for LIT remains unknown, it would seem to somehow modulate the immune responses so that pregnancy results in better outcomes. This case may thus provide new evidence for LIT as a possible management strategy for those with immune causes of recurrent pregnancy loss (RPL) but warrants additional studies to optimize its use and effectivity.