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- Title
Chromosomal abnormalities in products of conception of first-trimester miscarriages detected by conventional cytogenetic analysis: a review of 1000 cases.
- Authors
Pylyp, Larysa Y.; Spynenko, Lyudmyla O.; Verhoglyad, Nataliya V.; Mishenko, Anna O.; Mykytenko, Dmytro O.; Zukin, Valery D.
- Abstract
Purpose: The purpose of this study is to perform a retrospective analysis of types and frequencies of chromosomal abnormalities detected by conventional cytogenetic studies in first-trimester miscarriages after spontaneous conception and IVF.Methods: Standard cytogenetic analysis of GTG-banded chromosomes obtained from products of conception (POCs): semi-direct and short-term cultured chorionic villi or long-term cultured fetal mesodermal cells.Results: 50.1% of first-trimester miscarriages in the studied group had chromosomal abnormalities: 59.7% of trisomies, 22% of poliploidies, 7.5% of monosomies, 7% of unbalanced structural abnormalities, and 3.8% of multiple aneuploidies. An increase in the frequency of chromosomally abnormal miscarriages was observed in the group of women above 40 when compared to groups of women under 35 (<italic>P</italic> < 0.05). No difference in frequencies and types of chromosomal abnormalities in POCs of miscarriages after ICSI and spontaneous conception was observed.Conclusions: Approximately, 50% of first-trimester miscarriages have chromosomal abnormalities which can be detected by conventional cytogenetic analysis. The presence of chromosomal abnormality may explain the cause of miscarriage, improving the reproductive counseling and planning.
- Subjects
ANEUPLOIDY; PLOIDY; NONDISJUNCTION (Genetics); PREGNANCY complications; CHROMOSOMES
- Publication
Journal of Assisted Reproduction & Genetics, 2018, Vol 35, Issue 2, p265
- ISSN
1058-0468
- Publication type
Article
- DOI
10.1007/s10815-017-1069-1