NCT02223221.

Methods	Randomised controlled trial
Participants	189 participants, at least 2 failed pregnancies
Interventions	IVF cycles with PGT‐A. Select embryos by SNP‐array‐based PGS for the number of all chromosomes on day 5, only euploid embryos will be transferred. A maximum of 2 embryos will be transferred for each treatment cycle. Up to 3 treatment cycles will be offered.
Outcomes	Pregnancy outcome, ongoing pregnancy rate, clinical pregnancy, implantation of transferred embryo
Notes	Results information has been submitted to ClinicalTrials.gov by the sponsor or investigator, but is not yet publicly available (or 'posted') on ClinicalTrials.gov. The submitted information may not be available if it is pending quality control (QC) review by the National Library of Medicine (NLM) or if issues identified during QC review are being addressed or corrected by the sponsor or investigator. NLM's limited QC review assesses for apparent errors, deficiencies, or inconsistencies. NLM staff do not verify the scientific validity or relevance of the submitted information.

IVF: in vitro fertilisation

PGT‐A: Preimplantation genetic testing for aneuploidies

PGS: Preimplantation genetic screening

SNP: single‐nucleotide polymorphism