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Related Experiment Videos

Preimplantation genetics: Improving access to stem cell therapy.

Anver Kuliev1, Svetlana Rechitsky, Ilan Tur-Kaspa

  • 1Reproductive Genetics Institute, 2825 N. Halsted St., Chicago, IL 60657, USA. anverkuliev@hotmail.com

Annals of the New York Academy of Sciences
|December 13, 2005
PubMed
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Preimplantation genetic diagnosis (PGD) enables HLA-matched embryo selection for stem cell transplants, overcoming donor limitations for inherited bone marrow disorders. This advances stem cell therapy accessibility for affected children and families.

Area of Science:

  • Reproductive Medicine
  • Immunogenetics
  • Hematology

Background:

  • Stem cell transplantation is crucial for severe bone marrow disorders but limited by HLA-matched donor availability.
  • Preimplantation genetic diagnosis (PGD) offers a solution by enabling HLA typing before pregnancy.
  • This approach improves access to stem cell therapy for inherited bone marrow failures.

Purpose of the Study:

  • To evaluate the efficacy of preimplantation HLA typing within PGD for selecting HLA-matched embryos.
  • To assess the application of PGD for both avoiding affected pregnancies and identifying compatible stem cell donors.
  • To report on clinical outcomes including pregnancies and births of HLA-matched donors.

Main Methods:

  • Utilized multiple short tandem repeat markers across the HLA region for accurate HLA typing.

Related Experiment Videos

  • Incorporated analysis of chromosome 6 copy number to enhance typing accuracy.
  • Applied PGD for preselection and transfer of 100% HLA-matched embryos.

    • Main Results:

    • Successfully performed preimplantation HLA typing in 180 cycles, 122 for PGD and 58 for HLA typing only.
    • Achieved accurate preselection and transfer of 100% HLA-matched embryos.
    • Resulted in 30+ clinical pregnancies and 20+ births of HLA-matched children for sibling transplants.

    Conclusions:

    • Preimplantation HLA typing via PGD is a highly accurate method for selecting HLA-matched embryos.
    • This technique significantly expands the availability of HLA-matched stem cell donors for treating inherited and acquired bone marrow disorders.
    • Successful stem cell therapies have been achieved using stem cells from PGD-selected children.