Anfa Fertility Center (AFC)

Impact of Sperm Genome Decay on Day-3 Embryo Chromosomal Abnormalities From Advanced-Maternal-Age Patients
Infertilemale patients often exhibit unconventional semen parameters, including DNA fragmentation, chromatin dispersion, and aneuploidy  collectively referred to as sperm genome decay (SGD). We investigated the correlation of SGD to embryo chromosomal abnormalities and its effect on clinical pregnancy rates in patients with advanced maternal age (AMA) (>40 years) who were undergoing intracytoplasmic sperm injection-preimplantation genetic screening (ICSI-PGS). Three groups were assessed: patients with AMA and male partners with normal sperm (AMA-N); AMA patients and male partners presenting withSGD(AMA-SGD); and young fertile female patients and male partners with SGD (Y-SGD). We found a significant increase in embryonic chromosomal abnormalities  polyploidy, nullisomy, mosaicism, and chaotic anomaly rates  when semen parameters are altered (76% vs. 67% and 66% in AMA-SGDvs.AMA-N and Y-SGDgroups, respectively). Statistical analysis showed a correlation between SGD and aneuploidies of embryonic chromosomes 13, 16, 21, X, and Y, as well as negative clinical outcomes. Incorporation of molecular sperm analyses should therefore significantly minimize the risk of transmission of chromosomal anomalies from spermatozoa to embryos, and may provide better predictors of pregnancy than conventional sperm analyses. We also demonstrated that an ICSIPGS program should be implemented for SGD patients in order to limit transmission of chromosomal paternal anomalies and to improve clinical outcome.