<p>NBE: Number of Biopsied embryos; NAE: Number of Analysed embryos; NDE: Number of Diagnosed embryos; NUE: Number of Unaffected embryos; NTE: Number of Transfered embryos; NFE: Number of Frozen embryos; NGE: Number of Good quality embryos; NS; not statistically significant.</p><p>Comparison between pregnant and non-pregnant group of PGD cycles of monogenic diseases.</p