The survival, biopsy, ploidy and pregnancy rates of previously vitrified blastocysts subjected to warming/biopsy/revitrification for PGT-A analysis

      Although PGT-A with Next Generation Sequencing (NGS) is becoming the standard of care, there are a large number of blastocysts that were frozen prior to having embryo biopsy and genetic analysis. As a result, there are an increasing number of patients requesting genetic information of their previously undiagnosed frozen blastocysts. It is important to understand how these embryos perform following warming (thaw), biopsy and revitrification (refreeze) for PGT-A analysis; and their ability to initiate pregnancies following re-warming.
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