PMID- 33680886 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220421 IS - 2228-5482 (Print) IS - 2251-676X (Electronic) IS - 2228-5482 (Linking) VI - 22 IP - 1 DP - 2021 Jan-Mar TI - Frequency of Sperm Aneuploidy in Oligoasthenoteratozoospermic (OAT) Patients by Comprehensive Chromosome Screening: A Proof of Concept. PG - 57-64 LID - 10.18502/jri.v22i1.4996 [doi] AB - BACKGROUND: Embryonic aneuploidy usually results in implantation failure and miscarriage. Considering significantly high frequency of sperm aneuploidy reported in oligoasthenoteratozoospermia (OAT) using fluorescence in situ hybridization (FISH) in limited number of chromosomes and lack of comprehensive chromosome screening (CCS) in OAT, the aim of this study was applying CCS in OAT sperm and comparison of the results with FISH findings. METHODS: Five OAT patients with normal blood karyotypes and history of implantation failure were included. The successfully amplified samples, each containing two sperm, were analyzed by array comparative genomic hybridization (aCGH). FISH was utilized mainly depending on the aneuploidies found by aCGH to assess their frequencies in total sperm population. RESULTS: In aCGH for 30 sperm, aneuploidy was found in 66% of samples. Following the study of 4300 sperm by FISH, an average of 55.46% aneuploidy was observed. No pregnancy was resulted with normal partners. CONCLUSION: Using aCGH, some abnormalities were observed that are not typically considered in sperm FISH studies. Despite small sample size of the comprehensive study, like other similar studies, the frequency of aneuploidies was considerable and similar to FISH. Aneuploidies revealed by aCGH at single sperm resolution were different from sperm population detected by FISH. Considering high frequency of aneuploidy in OATs sperm, preimplantation genetic testing for aneuploidy (PGT-A) can be used for in transfer of chromosomally normal embryos. CI - Copyright(c) 2021, Avicenna Research Institute. FAU - Saei, Parishad AU - Saei P AD - Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. AD - Department of Molecular Genetics, Faculty of Basic Sciences and Advanced Technologies in Biology, University of Science and Culture, ACECR, Tehran, Iran. FAU - Bazrgar, Masood AU - Bazrgar M AD - Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. FAU - Gourabi, Hamid AU - Gourabi H AD - Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. FAU - Kariminejad, Roxana AU - Kariminejad R AD - Kariminejad-Najmabadi Pathology and Genetics Center, Tehran, Iran. FAU - Eftekhari-Yazdi, Poopak AU - Eftekhari-Yazdi P AD - Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. FAU - Fakhri, Mostafa AU - Fakhri M AD - Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran. LA - eng PT - Journal Article PL - Iran TA - J Reprod Infertil JT - Journal of reproduction & infertility JID - 101535586 PMC - PMC7903664 OTO - NOTNLM OT - Aneuploidy OT - Array comparative genomic hybridization OT - Fluorescence OT - In situ hybridization OT - Oligospermia OT - Spermatozoa COIS- Conflict of Interest The authors declare that they have no conflict of interests to disclose. EDAT- 2021/03/09 06:00 MHDA- 2021/03/09 06:01 PMCR- 2021/01/01 CRDT- 2021/03/08 05:54 PHST- 2021/03/08 05:54 [entrez] PHST- 2021/03/09 06:00 [pubmed] PHST- 2021/03/09 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - JRI-22-57 [pii] AID - 10.18502/jri.v22i1.4996 [doi] PST - ppublish SO - J Reprod Infertil. 2021 Jan-Mar;22(1):57-64. doi: 10.18502/jri.v22i1.4996.