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Лечение бесплодия методами экстракорпорального оплодотворения и преимплантационного генетического тестирования у женщины с кариотипом 46,XX,ins(13;4)(q34;p14p15.3),inv(4)(p14q12). Клинический случай
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Glinkina ZhI, Kulakova EV, Lebedeva EG, Kuzmicheva VS, Makarova NP. In vitro fertilization and preimplantation genetic testing methods in infertility treatment of a woman with karyotype 46,XX,ins(13;4)(q34;p14p15.3),inv(4)(p14q12). Case report. Gynecology. 2021; 23 (4): 441–444.
DOI: 10.26442/20795696.2021.5.201010
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Ключевые слова: вспомогательные репродуктивные технологии, преимплантационное генетическое тестирование, нарушение кариотипа, анеуплоидии, имплантация эмбриона
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The frequency of structural chromosomal transpositions can range fr om 1.8 to 8% among patients with reproductive disorders. There are several types of the rarest chromosomal abnormalities: insertion (insertion of a chromosomal region) and inversion (rotation of a chromosome region). This article describes a clinical case of the infertility treatment using assisted reproductive technologies in a woman with a rare chromosomal abnormality: simultaneous insertion and inversion of chromosomes – 46, XX, ins (13;4)(q34;p14p15.3), inv(4)(p14q12). The structure and frequency of chromosomal aberrations were determined by high-throughput sequencing in preimplantation embryos. The result of the sequencing analysis showed that unbalanced variants for a known pathology were detected in 9 (56.3%) out of 16 observations, while in 6 (37%) only for a pathology known in the karyotype and in 3 (19%) they were presented simultaneously with the pathology of other chromosomes or with mosaicism. According to the results of the study, in preimplantation embryos, wh ere one of the parents had chromosomal abnormalities, in addition to unbalanced variants, there is aneuploidy of other chromosomes not involved in the known pathology. They are described in 3 (21%) out of 14 observations of all identified pathology. In this regard, patients with aberrations in the karyotype are recommended, whenever possible, to carry out preimplantation genetic testing of structural rearrangements by methods allowed to analyze all chromosomes simultaneously. For example, high-throughput sequencing on the Illumina platform may become an alternative for prenatal diagnostics, which is performed in fertile couples with high risk of having a child with hereditary or congenital disorders. In the case of detection of chromosomal changes in the fetus, patients are faced with a number of ethical issues related to the necessity for medical abortion, which may contradict their religious and moral convictions.
Keywords: assisted reproductive technologies, preimplantation genetic testing, abnormal karyotype, aneuploidy, embryo implantation
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2. Pylyp LY, Spinenko LO, Verhoglyad NV, et al. Chromosomal abnormalities in patients with infertility. Tsitol Genet. 2015;49(3):33-9.
3. Gardner RJM, Amor DJ. Chromosome Abnormalities and Genetic Counseling. 5th ed. Oxford University Press, 2018.
4. Wang J, Li D, Xu Z, et al. Analysis of meiotic segregation modes in biopsied blastocysts from preimplantation genetic testing cycles of reciprocal translocations. Mol Cytogenet. 2019;12:11.
5. Chow JFC, Yeung WSB, Lee VCY, et al. Evaluation of preimplantation genetic testing for chromosomal structural rearrangement by a commonly used next generation sequencing workflow. Eur J Obstet Gynecol Reprod Biol. 2018;224:66-73. DOI:10.1016/j.ejogrb.2018.03.013
6. Brunet BCFK, Shen J, Cai L, et al. Preimplantation genetic testing for complex chromosomal rearrangement carriers by next-generation sequencing. Reprod Biomed Online. 2018;37(3):375-82. DOI:10.1016/j.rbmo.2018.07.001
1 ООО «Хайтек Генетикс», Москва, Россия;
2 ФГБУ «Национальный медицинский исследовательский центр акушерства, гинекологии и перинатологии имени академика В.И. Кулакова» Минздрава России, Москва, Россия;
3 Клинический госпиталь MD GROUP, Москва, Россия;
4 ГБУЗ МО «Московский областной научно-исследовательский институт акушерства и гинекологии», Москва, Россия
*janna435@yandex.ru
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Zhanna I. Glinkina*1, Elena V. Kulakova2, Elena G. Lebedeva 3, Varvara S. Kuzmicheva4, Nataliya P. Makarova2
1 Hi-Tech Genetics Ltd., Moscow, Russia;
2 Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia;
3 Clinical hospital MD GROUP, Moscow, Russia;
4 Moscow Regional Research Institute of Obstetrics and Gynecology, Moscow, Russia
*janna435@yandex.ru