Single Embryo TrAnsfeR of Euploid Embryo

Inclusion Criteria: * Patient undergoing IVF * At least 2 blastocysts suitable for biopsy on day 5 or 6 of embryo development Exclusion Criteria: * History of more than two prior implantation failure following IVF * History of more than one miscarriage of viable pregnancy * One or both partners known to be carrier(s) of a chromosomal abnormality * Known genetic carrier couple and/or one or both partners carrier of a known autosomal dominant disorder * Any other non-study related preimplantation genetic testing * Use of donor oocytes * Use of gestational carrier (surrogate or donor egg recipient). * Severe oligospermia (\<1,000,000 sperm/ml); Surgical Sperm Retrieval for reasons other than post-vasectomy and CAVD * Low ovarian reserve with (FSH) \>10 IU/L on day 2-4 of a prior menstrual cycle and/or (AMH) \<7 pmol/L (or \<1 ng/ml) * Gender selection cycles * Concurrent participation in another clinical trial