title: Lymphocyte immunotherapy can improve pregnancy outcome following embryo transfer (ET) in patients failing to conceive after two previous ET.
abstract: OBJECTIVE
  To determine if lymphocyte immunotherapy (LIT) can improve the outcome after embryo transfer (ET) in women failing to have a live delivery after at least two previous attempts.
  
  
  METHODS
  Women failing to deliver a live baby despite at least two previous ET cycles at Cooper Center for IVF irrespective of previous failed ET cycles in other centers were offered the option of lymphocyte immunotherapy prior to their next ET. They were subsequently matched to the very next woman having ET but in whom LIT was never offered or was refused. The matching was based on age, number of previous failed ET cycles, type of ET (fresh or frozen), and serum follicle stimulating hormone (FSH) level.
  
  
  RESULTS
  The clinical and viable pregnancy rate was 70.3% and 51.3% for the LIT group vs 45.9% and 16.2% for the controls (p < .05).
  
  
  CONCLUSIONS
  Lymphocyte immunotherapy may help improve outcome following ET in women with previous failures. The data should encourage a larger multicenter prospective study.
authors.affiliation: The University of Medicine and Dentistry of New Jersey Robert Wood Johnson Medical School at Camden, Cooper Hospital/University Medical Center, Department of Obstetrics and Gynecology, USA.
authors.forename: J H
authors.initials: JH
authors.lastname: Check
authors.forename: J R
authors.initials: JR
authors.lastname: Liss
authors.forename: M L
authors.initials: ML
authors.lastname: Check
authors.forename: A
authors.initials: A
authors.lastname: Diantonio
authors.forename: M
authors.initials: M
authors.lastname: Duroseau
mesh_terms: D000328:Adult; D004624:Embryo Transfer; D005260:Female; D006801:Humans; D007167:Immunotherapy; D007247:Infertility, Female / Q000628:therapy*; D017708:Leukocyte Transfusion; D016555:Matched-Pair Analysis; D011247:Pregnancy; D018873:Pregnancy Rate