Anti-paternal antibodies by flow cytometry in the management of alloimmunization on recurrent miscarriages

Hidehiko Matsubayashi, Tetsuo Maruyama, Nobuaki Ozawa, Shun Ichiro Izumi, Toshitaka Sugi, Kikuo Yoshikata, Yasunori Yoshimura, Tsunehisa Makino

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Problem: There is no reliable laboratory test available to diagnose immunologically mediated miscarriages. We investigated the clinical significance of maternal anti-paternal leukocyte antibodies by flow cytometry after alloimmunization. Method of study: The flow cytometry crossmatch (FCXM) was performed in 158 patients with a history of three or more unexplained first-trimester miscarriages without live birth. After negative FCXM patients were immunized, subsequent pregnancy outcomes and FCXM results were followed. Results: Of 112 subsequent pregnancies, 83 of 100 (83.0%) FCXM-positive patien ts after immunotherapy had successful pregnancy outcomes, whereas seven of 10 (70.0%) FCXM-negative patients had miscarriages (P = 0.0001). The percent live birth ratio was 2.77 (CI, 1.07-7.16; P = 0.0001) for FCXM-positive patients compared to FCXM-negative patients. The calculated predictive value showed that 75.6% of FCXM-negative patients would have subsequent miscarriages. Conclusions: Positive FCXM is closely associated with successful pregnancy outcome following immunotherapy. We propose that FCXM might be included in the routine laboratory tests for the management of recurrent miscarriages.

Original languageEnglish
Pages (from-to)284-288
Number of pages5
JournalAmerican Journal of Reproductive Immunology
Issue number5
Publication statusPublished - 2000


  • Complement-dependent cytotoxicity
  • Flow cytometry crossmatch
  • Immunologically mediated miscarriages
  • Immunotherapy

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Reproductive Medicine
  • Obstetrics and Gynaecology


Dive into the research topics of 'Anti-paternal antibodies by flow cytometry in the management of alloimmunization on recurrent miscarriages'. Together they form a unique fingerprint.

Cite this