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Liu D, Chen C, Zhang X, Dong M, He T, Dong Y, Lu J, Yu L, Yang C, Liu F. Successful birth after preimplantation genetic testing for a couple with two different reciprocal translocations and review of the literature. Reprod Biol Endocrinol 2021; 19:58. [PMID: 33879178 PMCID: PMC8056626 DOI: 10.1186/s12958-021-00731-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/10/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Preimplantation genetic testing for chromosomal structural rearrangements (PGT-SR) is widely applied in couples with single reciprocal translocation to increase the chance for a healthy live birth. However, limited knowledge is known on the data of PGT-SR when both parents have a reciprocal translocation. Here, we for the first time present a rare instance of PGT-SR for a non-consanguineous couple in which both parents carried an independent balanced reciprocal translocation and show how relevant genetic counseling data can be generated. METHODS The precise translocation breakpoints were identified by whole genome low-coverage sequencing (WGLCS) and Sanger sequencing. Next-generation sequencing (NGS) combining with breakpoint-specific polymerase chain reaction (PCR) was used to define 24-chromosome and the carrier status of the euploid embryos. RESULTS Surprisingly, 2 out of 3 day-5 blastocysts were found to be balanced for maternal reciprocal translocation while being normal for paternal translocation and thus transferable. The transferable embryo rate was significantly higher than that which would be expected theoretically. Transfer of one balanced embryo resulted in the birth of a healthy boy. CONCLUSION(S) Our data of PGT-SR together with a systematic review of the literature should help in providing couples carrying two different reciprocal translocations undergoing PGT-SR with more appropriate genetic counseling.
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Affiliation(s)
- Dun Liu
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Chuangqi Chen
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Xiqian Zhang
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Mei Dong
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Tianwen He
- Medical Genetic Centre, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Yunqiao Dong
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Jian Lu
- Medical Genetic Centre, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Lihua Yu
- Medical Genetic Centre, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Chuanchun Yang
- CheerLand Precision Biomed Co., Ltd., Shenzhen, Guangdong, China
| | - Fenghua Liu
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China.
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2
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Poornima S, Daram S, Krishna R, Hasan Q. Robertsonian and Balanced Reciprocal Translocation in Both Child and Mother with a History of Recurrent Abortions. J Reprod Infertil 2020; 21:65-67. [PMID: 32175267 PMCID: PMC7048690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND Similar rare Robertsonian and balanced reciprocal translocation in both child and mother with a history of multiple miscarriages in the first trimester was the motive to write this case report. Cytogenetic analysis helps in genetic counselling of infertility, BOH and dysmorphology which in turn helps in pre implantation genetic testing. Although many case reports have already been published about Robertsonian and balanced translocations, this is the first case report in India which showed both types of translocation in the same patient, rob (13;14) and t (4;7). Interestingly, in the same patient, same translocations were also identified in the mother and father having no chromosomal abnormalities. CASE PRESENTATION Proband with dysmorphology was refered first for karyotyping and later parental karyotyping was performed. CONCLUSION Cytogenetic analysis plays an important role in the diagnosis and management of disease along with prenatal screening.
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Affiliation(s)
- Subhadra Poornima
- Department of Genetics and Molecular Medicine, Kamineni Hospitals, L.B. Nagar, Hyderabad, India, Department of Genetics and Molecular Medicine, Kamineni Life Sciences, Moulali, Hyderabad, India,Corresponding Author: Subhadra Poornima, Scientific Officer, Department of Genetics and Molecular Medicine, Kamineni Life Sciences, Moulali, Hyderabad, India, E-mail: subhadrapoornima1 @gmail.com
| | - Swarnalatha Daram
- Department of Genetics and Molecular Medicine, Kamineni Hospitals, L.B. Nagar, Hyderabad, India, Department of Genetics and Molecular Medicine, Kamineni Life Sciences, Moulali, Hyderabad, India
| | - Rama Krishna
- Department of Biochemistry, Kamineni Academy of Medical Sciences and Research Centre, LB Nagar, Hyderabad, India
| | - Qurratulain Hasan
- Department of Genetics and Molecular Medicine, Kamineni Hospitals, L.B. Nagar, Hyderabad, India
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3
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Mogaiden SM, Poulose JP, Francis A, Das SS, Koshy T, Parasuram MB, Karunakaran GK. A de novo double translocation involving four chromosomes in a case of bad obstetric history. Eur J Obstet Gynecol Reprod Biol 2018; 225:267-268. [PMID: 29731114 DOI: 10.1016/j.ejogrb.2018.04.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 04/30/2018] [Indexed: 10/17/2022]
Affiliation(s)
- Sharrifa Meleyil Mogaiden
- Center for Infertility Management and Assisted Reproduction (CIMAR), NH 17 Cheranallore, Edappally, Cochin, Kerala 682034, India.
| | - Jesmi Pullely Poulose
- Center for Infertility Management and Assisted Reproduction (CIMAR), NH 17 Cheranallore, Edappally, Cochin, Kerala 682034, India.
| | - Athena Francis
- Center for Infertility Management and Assisted Reproduction (CIMAR), NH 17 Cheranallore, Edappally, Cochin, Kerala 682034, India.
| | - Sruthy Soma Das
- Center for Infertility Management and Assisted Reproduction (CIMAR), NH 17 Cheranallore, Edappally, Cochin, Kerala 682034, India.
| | - Teena Koshy
- Department of Human Genetics, Sri Ramachandra Medical College and Research Institute, Porur, Chennai 600116, India.
| | - Meenu Batra Parasuram
- Center for Infertility Management and Assisted Reproduction (CIMAR), NH 17 Cheranallore, Edappally, Cochin, Kerala 682034, India.
| | - Gopinathan Kannoly Karunakaran
- Center for Infertility Management and Assisted Reproduction (CIMAR), NH 17 Cheranallore, Edappally, Cochin, Kerala 682034, India.
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4
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Peterson JF, Geddes GC, Basel DG, Schippman D, Grignon JW, vanTuinen P, Kappes UP. Inheritance of a Balanced t(12;20)(q24.33;p12.2) and Unbalanced der(13)t(7;13)(p21.3;q33.2) from a Maternally Derived Double Balanced Translocation Carrier. J Pediatr Genet 2017; 7:35-39. [PMID: 29441220 DOI: 10.1055/s-0037-1605592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 07/10/2017] [Indexed: 10/19/2022]
Abstract
We report a 4-month-old male proband with a history of prominent forehead, hypertelorism, ear abnormalities, micrognathia, hypospadias, and multiple cardiac abnormalities. Initial microarray analysis detected a concurrent 7p21.3-p22.3 duplication and 13q33.2-q34 deletion indicating an unbalanced rearrangement. However, subsequent conventional cytogenetic studies only revealed what appeared to be a balanced t(12;20)(q24.33;p12.2). Fluorescence in situ hybridization (FISH) using chromosome-specific subtelomere probes confirmed the presence of an unbalanced der(13)t(7;13)(p21.3;q33.2) and balanced t(12;20)(q24.33;p12.2), both of maternal origin. In addition to our unique clinical findings, this case highlights the benefits and limitations of both conventional cytogenetic studies and microarray analysis and how FISH complements each methodology.
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Affiliation(s)
- Jess F Peterson
- Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Gabrielle C Geddes
- Department of Pediatrics, Section of Genetics, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Donald G Basel
- Department of Pediatrics, Section of Genetics, Medical College of Wisconsin, Milwaukee, Wisconsin, United States.,Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Dana Schippman
- Department of Pediatrics, Section of Genetics, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - John W Grignon
- Wisconsin Diagnostic Laboratories, Milwaukee, Wisconsin, United States
| | - Peter vanTuinen
- Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Ulrike P Kappes
- Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States.,The Advanced Genomics Laboratory at Children's Research Institute, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
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5
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The incidence and type of chromosomal translocations from prenatal diagnosis of 3800 patients in the republic of macedonia. Balkan J Med Genet 2014; 16:23-8. [PMID: 24778559 PMCID: PMC4001411 DOI: 10.2478/bjmg-2013-0027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Robertsonian and reciprocal chromosomal translocations are the most frequent type of structural chromosomal aberrations in the human population. We report the frequency and type of detected translocations in 10 years of prenatal diagnosis of 3800 prenatal samples. The materials came from amniocentesis and chorionic villus samples (CVS). We detected seven Robertsonian translocations (0.18%), eight autosomal reciprocal translocations (0.21%) and one sex chromosome translocation (0.03%). The overall frequency of all translocations was 0.42%. Balanced state translocations were 0.29% and the frequency of translocations in an unbalanced state was 0.13%. There was one balanced de novo X-autosome translocation [46,X,t(X;10)(p11.23;q22.3)] and one balanced double translocation [46,XX,t(1;21);t(7;16)(1p21; 21q11) (7q31;16q23)] inherited from the mother. Most of the detected translocations were the result of unknown familial translocations, but some of them had been previously detected in one of the parents. In order to detect the recurrence risk for future pregnancies, we proposed genetic counseling in each of the cases and we established whether the parents were heterozygous for the same translocation. Histopatological findings for some unbalanced translocations correlated with phenotypes of detected unbalanced karyotypes.
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6
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Abstract
Double balanced translocations are particularly rare and the risk of a fetus with an unbalanced chromosomal anomaly is greater than for single translocation carriers. In this present case, we describe an interesting family history which included three generations. A couple, married for 4 years, was referred to the genetic clinic due to infertility and family chromosome anomalies. A GTG-band chromosome analysis indicated that the male partner’s karyotype was 45,XY, t(3;18)(q11;ptel)t(13;14)(q10;q10). The same double balanced translocation was found in two others family members.
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7
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Pellestor F, Anahory T, Lefort G, Puechberty J, Liehr T, Hedon B, Sarda P. Complex chromosomal rearrangements: origin and meiotic behavior. Hum Reprod Update 2011; 17:476-94. [DOI: 10.1093/humupd/dmr010] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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8
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Escudero T, Estop A, Fischer J, Munne S. Preimplantation genetic diagnosis for complex chromosome rearrangements. Am J Med Genet A 2008; 146A:1662-9. [PMID: 18536046 DOI: 10.1002/ajmg.a.32286] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Complex chromosome rearrangements (CCR) are structural rearrangements that involve more than two breakpoints. The most common ones involve three chromosomes and three breakpoints, but double translocations can also occur. Theoretically, the potential for chromosome imbalance in the gametes of CCR carriers is higher than for simple translocations, and thus they are at an even higher risk of recurrent miscarriage. Preimplantation genetic diagnosis (PGD) has been shown to significantly reduce the risk of repeated pregnancy loss in translocation carriers, and thus it is well indicated for CCR. Here we describe different approaches for PGD of CCRs. After PGD of five couples carriers of CCR, only 6.4% of embryos were found normal or balanced, but the transfer of these six embryos into four couples, resulted in two pregnancies, one with normal non-identical twins, and the other with a balanced karyotype. Thus the implantation rate was 50%, and the pregnancy per retrieval was 40%, with 0% spontaneous abortions and 0% unbalanced offspring. This compares favorably with a prior history of spontaneous abortions, unbalanced offspring, and low fertility.
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Affiliation(s)
- T Escudero
- Reprogenetics, LLC, South San Francisco, California, USA
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9
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Zaki M, Shehab M, El-Aleem AA, Abdel-Salam G, Koeller HB, Ilkin Y, Ross ME, Dobyns WB, Gleeson JG. Identification of a novel recessiveRELN mutation using a homozygous balanced reciprocal translocation. Am J Med Genet A 2007; 143A:939-44. [PMID: 17431900 DOI: 10.1002/ajmg.a.31667] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Two siblings from a consanguineous Egyptian marriage showed an identical phenotype of cortical lissencephaly with cerebellar hypoplasia, severe epilepsy, and mental retardation. Examination of karyotype revealed 46, t(7;12)(q22;p13)mat (7;12)(q22;p13)pat in both affected children, suggesting a homozygous reciprocal balanced translocation. Each healthy parent was a carrier of the balanced translocation in the heterozygous state, suggesting homozygous disruption of a gene involved in brain development. There were early spontaneous abortions in this family, as would be expected from transmission of an unbalanced chromosome. A disruption of RELN at 7q22.1 with absence of encoded protein was identified. This is the first demonstration that such rare homozygous translocations can be used to identify recessive disease gene mutations.
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Affiliation(s)
- Maha Zaki
- Clinical Genetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt.
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10
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Karmous-Benailly H, Giuliano F, Massol C, Bloch C, De Ricaud D, Lambert JC, Perelman S. Unbalanced inherited complex chromosome rearrangement involving chromosome 8, 10, 11 and 16 in a patient with congenital malformations and delayed development. Eur J Med Genet 2006; 49:431-8. [PMID: 16497571 DOI: 10.1016/j.ejmg.2006.01.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2005] [Accepted: 01/13/2006] [Indexed: 11/27/2022]
Abstract
Complex chromosome rearrangements (CCR) are rare structural chromosome aberrations that can be found in patients with phenotypic abnormalities or in phenotypically normal patients presenting, however, recurrent miscarriages or infertility. Conventional karyotype generally allows their identification. However, molecular cytogenetic methods can reveal subtle rearrangements. We report, here, the identification of an unbalanced maternally inherited CCR in a boy with multiple congenital malformations and delayed development. High-resolution karyotype completed by molecular cytogenetic prompted us to precise the rearrangements. The healthy mother was found to carry a balanced de novo CCR that implicates four chromosomes (8, 10, 11 and 16), six breakpoints, three translocations and an insertion. The malsegregation of this CCR had led, in her son, to partial 10p12.3 to 10p14 deletion, a chromosomal region associated with the DiGeorge like phenotype.
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MESH Headings
- Abnormalities, Multiple/genetics
- Chromosome Aberrations
- Chromosome Deletion
- Chromosomes, Human, Pair 10/genetics
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 16/genetics
- Chromosomes, Human, Pair 8/genetics
- Developmental Disabilities/genetics
- DiGeorge Syndrome/genetics
- Female
- Humans
- In Situ Hybridization, Fluorescence
- Infant
- Karyotyping
- Male
- Phenotype
- Pregnancy
- Translocation, Genetic
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Affiliation(s)
- Houda Karmous-Benailly
- Service de génétique médicale, hôpital l'Archet 2, CHU de Nice, 151, route de Saint-Antoine-de-Ginestière, 06202 Nice cedex 03, France.
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11
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Lespinasse J, Réthoré MO, North MO, Bovier-Lapierre M, Lundsteen C, Fert-Ferrer S, Bugge M, Kirchoff M. Balanced complex chromosomal rearrangements (BCCR) with at least three chromosomes and three or more breakpoints: report of three new cases. ACTA ACUST UNITED AC 2004; 47:315-24. [PMID: 15337478 DOI: 10.1016/j.anngen.2004.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2003] [Accepted: 12/10/2003] [Indexed: 11/24/2022]
Abstract
Balanced complex chromosomal rearrangements (BCCR) encompass a heterogeneous group of rare chromosomal aberrations. In this paper, we report three cases of BCCRs. In two the probands were referred for either genetic counseling or prenatal management. One case was ascertained after chromosome analysis performed because of psychiatric manifestations; this was an isolated finding. We also outline the molecular cytogenetic techniques, which were essential in confirming and precisely delineating the BCCRs identified in these patients. In addition the various aspects of genetic counseling for this type of chromosomal rearrangement, highlighting the details particular to each individual case are discussed. We discuss the classification for this type of chromosomal mutation.
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Affiliation(s)
- J Lespinasse
- Cytogenetic Laboratory, General Hospital, BP 1125, 73011 Chambéry cedex, France.
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12
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Chuang L, Kuo PL, Yang HB, Chien CH, Chen PY, Chang CH, Chang FM. Prenatal diagnosis of holoprosencephaly in two fetuses with der (7)t(1;7)(q32;q32)pat inherited from the father with double translocations. Prenat Diagn 2003; 23:134-7. [PMID: 12575020 DOI: 10.1002/pd.552] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The presence of two independent translocations in one person is rare. Herein, we report the prenatal diagnosis of two sibling fetuses with holoprosencephaly, whose father is a carrier of double translocations. The karyotype of the father is 46,XY, t(1;7) (q32;q32), t(14,15) (q32.1;q26.3). The two fetuses had variable facial dysmorphisms and identical cytogenetic abnormality-a derivative (7) t(1;7) (q32;q32) inherited from the father. The proband 1 showed a small mouth, a single median eye and a proboscis above the eye, while the proband 2 showed hypotelorism, a flat nose, cleft lip and cleft palate. Both fetuses also had alobar holoprosencephaly. Haploinsufficiency of the sonic hedgehog gene at 7q36 does account for the occurrence of holoprosencephaly in the two fetuses with a deletion of distal 7q (7q32 --> qter).
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Affiliation(s)
- Louise Chuang
- Department of Obstetrics and Gynecology, National Cheng Kung University Medical College and Hospital, 138 Victory Road, Tainan, Taiwan
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13
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Wysocka B, Brozek I, Wierzba J, Kardaś I, Woźniak A, Kowalczyk J, Balcerska A, Limon J. Partial trisomy of distal 5q and partial monosomy of Xp as a result of mating between two translocation carriers: a female with a balanced translocation t(X;5)(p11;q31) and a male with a der(13;14)(q10;q10)--a case report and a family study. ANNALES DE GENETIQUE 2002; 45:143-6. [PMID: 12381446 DOI: 10.1016/s0003-3995(02)01124-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This paper presents the family of a dysmorphic child with the phenotypic features of Turner's syndrome and 5q trisomy, whose parents are both carriers of a balanced translocation. The parents' karyotypes are 46,X,t(X;5)(p11.1;q31) and 45,XY,der(13;14)(q10;q10), respectively.
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MESH Headings
- Child
- Chromosome Aberrations
- Chromosomes, Human, Pair 13
- Chromosomes, Human, Pair 14
- Chromosomes, Human, Pair 5
- Chromosomes, Human, X
- Female
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Male
- Pedigree
- Sex Chromosome Aberrations
- Translocation, Genetic
- Trisomy
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Affiliation(s)
- Barbara Wysocka
- Department of Biology and Genetics, Medical University of Gdańsk, Poland
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14
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Cook L, Hartsfield JK, Vance GH. Partners with reciprocal translocations: genetic counseling for the 'double translocation'. Clin Genet 1998; 53:403-7. [PMID: 9660061 DOI: 10.1111/j.1399-0004.1998.tb02754.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
SV at age 2 years presented with multiple congenital anomalies including an absent left kidney, anal stenosis, vertebral abnormalities, partial sacral agenesis, microcephaly, dysmorphic facial features, growth deficiency, and developmental delay. She was found to have a complex chromosomal rearrangement derived from balanced translocations in each parent.
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Affiliation(s)
- L Cook
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, USA
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15
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Tsuji K, Narahara K, Yokoyama Y, Ninomiya S, Yonesawa S, Hiramatsu Y, Masaoka H, Kudo N, Seino Y. Reproductive risk in mating between two translocation carriers: case report and review of the literature. AMERICAN JOURNAL OF MEDICAL GENETICS 1993; 46:524-8. [PMID: 8322814 DOI: 10.1002/ajmg.1320460513] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We conducted a study to determine the reproductive risk in a couple who were translocation carriers. This couple, who carried balanced reciprocal translocations, experienced habitual abortions. The wife had a karyotype of 46,XX,t(7;13)(p15.3;q12.3) and the husband of 46,XY,t(1;7)(p11.1;p11.1). Chromosome study of their fourth abortus demonstrated a chimera consisting of two cell lines with a 46,XY and a 46,XX,t(1;7)(p11.1;p11.1)pat, -13, + der(7)t(7;13)(p15.3;q12.3)mat, karyotype. A review of the literature indicates that the risk of having unbalanced live offspring or of spontaneous abortion/stillborns is similar in couples in whom both were translocation carriers and in couples in whom one individual was a translocation carrier. The apparent lack of increased reproductive failure may result from the selective disadvantage of aneusomic gametes at fertilization or very early spontaneous abortions of unbalanced conceptuses.
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Affiliation(s)
- K Tsuji
- Department of Pediatrics, Okayama University Medical School, Japan
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16
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Bensen JT, Nelson LH, Pettenati MJ, Block SM, Brusilow SW, Livingstone LR, Burton BK. First report of management and outcome of pregnancies associated with hereditary orotic aciduria. AMERICAN JOURNAL OF MEDICAL GENETICS 1991; 41:426-31. [PMID: 1776631 DOI: 10.1002/ajmg.1320410408] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two pregnancies in a 25-year-old woman with hereditary orotic aciduria who was managed prenatally on uridine therapy are described. The first pregnancy resulted in an infant with multiple congenital anomalies and a 47,xx,inv(4)(p12q25), +der(22)t(11;22)(p23;q11) karyotype. The proposita was found to be a carrier of a de novo 11;22 translocation and a pericentric inversion of chromosome 4. Subsequently, several carriers of orotic aciduria in this family were identified with the inverted chromosome 4. The second pregnancy resulted in a normal male with an inverted chromosome 4.
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MESH Headings
- Abnormalities, Multiple/genetics
- Adult
- Chromosome Aberrations
- Chromosomes, Human, Pair 11
- Chromosomes, Human, Pair 22
- Chromosomes, Human, Pair 5
- Female
- Genes, Recessive
- Humans
- Infant
- Infant, Newborn
- Male
- Multienzyme Complexes/deficiency
- Orotate Phosphoribosyltransferase/deficiency
- Orotic Acid/urine
- Orotidine-5'-Phosphate Decarboxylase/deficiency
- Pedigree
- Pregnancy
- Pregnancy Complications/urine
- Translocation, Genetic
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Affiliation(s)
- J T Bensen
- Department of Neurology Bouman Gray School of Medicine of Wake Forest University, Winston-Salem, North Carolina 27157
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17
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Phillips OP, Tharapel AT, Shulman LP, Simpson JL, Elias S. Segregation analysis and genetic counseling when both parents carry balanced chromosomal translocations. Fertil Steril 1991; 56:646-52. [PMID: 1915938 DOI: 10.1016/s0015-0282(16)54594-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To assess the risk of chromosomally abnormal offspring and discuss counseling approach when both parents carry balanced translocations. DESIGN Theoretical segregation analysis is performed and use of empiric data is used in genetic counseling. SETTING Patients are referred to Division of Reproductive Genetics at the University of Tennessee, Memphis. PATIENTS, PARTICIPANTS The mother, heterozygous for reciprocal translocation 46,XX, rcp(7;13)(p21;q22) and father, heterozygous for Robertsonian translocation 45,XY,rob(13q;14q) were referred for genetic counseling concerning risks of chromosomally abnormal offspring. INTERVENTIONS Segregation analysis, genetic counseling, and chorionic villus sampling. MAIN OUTCOME MEASURE(S) A cumulative risk was derived to use for counseling purposes. Cytogenetics using GTG-banding was performed on cultured chorionic villus cells. RESULTS Theoretical risk of this couple having chromosomally abnormal offspring was 40.5%. On the basis of empirical data and risk factors inherent in the specific translocations, the maternal contribution at midtrimester was 3.5%; the paternal contribution was 1% to 2%. The sum of these risks was used in counseling. CONCLUSIONS The fetus was found to be 46,XY,rcp(7;13)(p21;q22).
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MESH Headings
- Abortion, Habitual/genetics
- Adult
- Chromosomes, Human, Pair 13
- Chromosomes, Human, Pair 14
- Chromosomes, Human, Pair 21
- Chromosomes, Human, Pair 7
- Female
- Genetic Counseling
- Humans
- Male
- Pregnancy
- Translocation, Genetic
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Reilly DS, Nussbaum RL. Parental origin of de novo translocation in a patient with both an inherited and a de novo chromosome translocation. AMERICAN JOURNAL OF MEDICAL GENETICS 1990; 37:429-30. [PMID: 2260578 DOI: 10.1002/ajmg.1320370327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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