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Xie P, Li Y, Cheng D, Hu L, Tan Y, Luo K, Gong F, Lu G, Lin G. Preimplantation genetic testing results of blastocysts from 12 non-Robertsonian translocation carriers with chromosome fusion and comparison with Robertsonian translocation carriers. Fertil Steril 2021; 116:174-180. [PMID: 33676754 DOI: 10.1016/j.fertnstert.2020.11.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 11/05/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To investigate the effects of non-Robertsonian translocation with chromosome fusion (N-RBCF) on preimplantation embryos. DESIGN Case series. SETTING University-affiliated center. PATIENT(S) Twelve couples with N-RBCF. INTERVENTION(S) Assisted reproduction with preimplantation genetic testing in chromosomal structural rearrangement (PGT-SR). MAIN OUTCOME MEASURE(S) Normal embryo rate, unbalanced translocation rate. RESULT(S) PGT was performed in 12 N-RBCF carriers, of whom 4 carried Y-autosome fusions and 8 autosomal fusions. A total of 12 (63.2%) of 19 blastocysts exhibited normal/balanced embryos, and only one (5.3%) embryo exhibited unbalanced translocations among Y-autosome fusion cases. In contrast to these findings, the percentage of normal/balanced blastocysts in 8 autosomal N-RBCF cases was 28.2% (11/39), whereas the unbalanced translocation rate was 53.8%. Furthermore, the percentage of normal/balanced embryos in the Robertsonian translocation group was significantly higher than that of the 8 autosomal N-RBCF (48.7% vs. 28.2%) cases. The rates of abnormality from chromosomal fusion in the 8 autosomal N-RBCF cases were significantly higher than those noted in the Robertsonian translocation (53.8% vs. 31.4%) subjects. The results of the stratified analysis according to the carrier's sex demonstrated that the rates of unbalanced translocation were significantly higher in the male autosomal N-RBCF subjects than those from the corresponding Robertsonian translocation (55% vs. 19.7%) cases. CONCLUSION(S) A low number of unbalanced translocations was identified in blastocysts from N-RBCF subjects who carried the Y fusion. The risk of unbalanced translocation in autosomal N-RBCF was higher than that of the Robertsonian translocation, notably in male carriers.
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Affiliation(s)
- Pingyuan Xie
- Hunan Normal University School of Medicine, Changsha, People's Republic of China; National Engineering and Research Center of Human Stem Cell, Changsha, People's Republic of China
| | - Yiqing Li
- Hunan Normal University, Changsha, People's Republic of China
| | - Dehua Cheng
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, People's Republic of China; Laboratory of Reproductive and Stem Cell Engineering, Key Lab National Health and Family Planning Commission, Central South University, Changsha, People's Republic of China
| | - Liang Hu
- National Engineering and Research Center of Human Stem Cell, Changsha, People's Republic of China; Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, People's Republic of China; Laboratory of Reproductive and Stem Cell Engineering, Key Lab National Health and Family Planning Commission, Central South University, Changsha, People's Republic of China
| | - Yueqiu Tan
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, People's Republic of China; Laboratory of Reproductive and Stem Cell Engineering, Key Lab National Health and Family Planning Commission, Central South University, Changsha, People's Republic of China
| | - Keli Luo
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, People's Republic of China; Laboratory of Reproductive and Stem Cell Engineering, Key Lab National Health and Family Planning Commission, Central South University, Changsha, People's Republic of China
| | - Fei Gong
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, People's Republic of China; Laboratory of Reproductive and Stem Cell Engineering, Key Lab National Health and Family Planning Commission, Central South University, Changsha, People's Republic of China
| | - Guangxiu Lu
- National Engineering and Research Center of Human Stem Cell, Changsha, People's Republic of China; Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, People's Republic of China; Laboratory of Reproductive and Stem Cell Engineering, Key Lab National Health and Family Planning Commission, Central South University, Changsha, People's Republic of China
| | - Ge Lin
- National Engineering and Research Center of Human Stem Cell, Changsha, People's Republic of China; Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, People's Republic of China; Laboratory of Reproductive and Stem Cell Engineering, Key Lab National Health and Family Planning Commission, Central South University, Changsha, People's Republic of China.
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AboElella SS, Tawfik MA, Abo El-fotoh WMM. Molecular study of developmental sex disorders in children. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2015. [DOI: 10.1016/j.ejmhg.2015.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Mademont-Soler I, Morales C, Madrigal I, Margarit E, Bruguera J, Clusellas NÃ, MartÃnez JM, Borrell A, Sánchez A, Soler A. Prenatal diagnosis of two different unbalanced forms of an inherited (Y;12) translocation. Am J Med Genet A 2009; 149A:2820-3. [DOI: 10.1002/ajmg.a.33105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Velissariou V, Sismani C, Christopoulou S, Kaminopetros P, Hatzaki A, Evangelidou P, Koumbaris G, Bartsocas CS, Stylianidou G, Skordis N, Diakoumakos A, Patsalis PC. Loss of the Y chromosome PAR2 region and additional rearrangements in two familial cases of satellited Y chromosomes: cytogenetic and molecular analysis. Eur J Med Genet 2007; 50:291-300. [PMID: 17584536 DOI: 10.1016/j.ejmg.2007.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Accepted: 04/10/2007] [Indexed: 10/23/2022]
Abstract
Two cases of rare structural aberrations of the Y chromosome were detected: a del(Y) (q12) chromosome in a child with mild dysmorphic features, obesity and psychomotor delay, and two identical satellited Y chromosomes (Yqs) in a normal twin, which were originally observed during routine prenatal diagnosis. In both cases a Yqs chromosome was detected in the father which had arisen from a reciprocal translocation involving the short arm of chromosome 15 and the heterochromatin of the long arm of the Y chromosome (Yqh). Cytogenetic and molecular studies demonstrated that in the reciprocal product of chromosomes 15 and Y PAR2 could not be detected, showing that PAR2 had been deleted. It is discussed whether the translocation of the short arm of an acrocentric chromosome to the heterochromatin of the long arm of the Y chromosome causes instability of this region which results either in loss of genetic material or interference with the normal mechanism of disjunction.
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Affiliation(s)
- V Velissariou
- Department of Genetics and Molecular Biology, Mitera General, Maternity and Pediatric Clinic, 6 Eryrthrou Street & Kifissias, 15123 Athens, Greece.
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Morales C, Soler A, Bruguera J, Madrigal I, Alsius M, Obon M, Margarit E, Sánchez A. Pseudodicentric 22;Y translocation transmitted through four generations of a large family without phenotypic repercussion. Cytogenet Genome Res 2007; 116:319-23. [PMID: 17431332 DOI: 10.1159/000100418] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2006] [Accepted: 12/22/2006] [Indexed: 11/19/2022] Open
Abstract
The most frequent Y-autosome translocations involve an acrocentric autosome and they are frequently familial with neither phenotypic nor reproductive repercussion. However, different Y-autosome translocations have been related to infertility, due to abnormal pairing of the X and Y chromosomes at meiosis and an abnormal XY-body formation or by the disruption of the AZFs (Azoospermic Factor). Rare forms of Y-autosome translocations are those resulting in an unbalanced 45-chromosome karyotype that includes a dicentric Y+autosome chromosome. We describe a new case of a familial pseudodicentric 22;Y that is carried by 19 male members of a large family without phenotypic repercussion. Cytogenetic analysis, fluorescence in situ hybridisation (FISH) and subtelomeric Multiplex Ligation-dependent Probe Amplification (MLPA) assay have been performed. All male members of the family showed the karyotype 45,X,psu dic(22;Y)(p11.2;qter).ish psu dic(22;Y) (SRY+,DYZ3+,D14/D22Z1+). In conclusion, the presence of the dicentric chromosome in the male members of the family reported does not seem to interfere with the correct progression of spermatogenesis.
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Affiliation(s)
- C Morales
- Fundació Clínic per a la Recerca Biomèdica, Barcelona, Spain
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