Preembryonic diagnosis for sickle cell disease.

Abstract excerpt

Embryos found to be abnormal during preimplantation genetic diagnosis are discarded or analyzed to confirm the diagnosis. The destruction of affected embryos is ethically unacceptable to some couples. We developed a preembryonic genetic diagnosis, that uses sequential first and second polar body removal, followed by oocyte freezing at the pronuclear stage. This was applied in a patient at risk of having a child...

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