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Cifuentes Ochoa M, Flowers NJ, Pertile MD, Archibald AD. "It becomes your whole life"-Exploring experiences of reciprocal translocation carriers and their partners. J Genet Couns 2023; 32:1057-1068. [PMID: 37186486 DOI: 10.1002/jgc4.1716] [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: 06/24/2022] [Revised: 03/14/2023] [Accepted: 03/21/2023] [Indexed: 05/17/2023]
Abstract
Reciprocal translocation carriers are often diagnosed when they are experiencing difficulties conceiving or after a pregnancy affected by an unbalanced set of chromosomes inherited from the balanced carrier parent. Having a reciprocal translocation is not uncommon; carriers can benefit from reproductive options to achieve a healthy, chromosomally balanced, pregnancy. The aim of this study was to explore the lived experience of carriers and their partners. We conducted 13 semi-structured telephone interviews. Participants were recruited through Victorian Clinical Genetics Services and interviews took place between May and September 2020. Interview transcripts were analyzed using thematic analysis. Reciprocal translocation carriers and their partners described long term emotional and reproductive impacts, with carrier status identified at the time of prenatal diagnosis having marked emotional consequences. Couples facing reproductive challenges found the diagnosis created uncertainty for their future. When considering a pregnancy, couples worried about experiencing a miscarriage; during pregnancy, there was a reluctance to have an invasive diagnostic procedure due to fearing the risk of losing an unaffected pregnancy. Adaptation to their new reality involved having access to accurate information, peer support and maintaining hope. Couples valued having the option to know the carrier status of their children. The complex impacts of carrying a reciprocal translocation highlight the importance of access to specialist genetic counseling services to ensure couples are supported in understanding the implications of their translocation.
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Affiliation(s)
- Marta Cifuentes Ochoa
- Department of Paediatrics, University of Melbourne, Victoria, Parkville, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Victoria, Parkville, Australia
- Murdoch Children's Research Institute, Victoria, Parkville, Australia
| | - Nicola Jane Flowers
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Victoria, Parkville, Australia
- Murdoch Children's Research Institute, Victoria, Parkville, Australia
| | - Mark Domenic Pertile
- Department of Paediatrics, University of Melbourne, Victoria, Parkville, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Victoria, Parkville, Australia
- Murdoch Children's Research Institute, Victoria, Parkville, Australia
| | - Alison Dalton Archibald
- Department of Paediatrics, University of Melbourne, Victoria, Parkville, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Victoria, Parkville, Australia
- Murdoch Children's Research Institute, Victoria, Parkville, Australia
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Prenatal Diagnosis of a Fetus with Trisomy 18 and Inherited Reciprocal Translocation Between Chromosomes 7 and 18. JOURNAL OF FETAL MEDICINE 2021. [DOI: 10.1007/s40556-021-00320-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Turki RF, Assidi M, Banni HA, Zahed HA, Karim S, Schulten HJ, Abu-Elmagd M, Rouzi AA, Bajouh O, Jamal HS, Al-Qahtani MH, Abuzenadah AM. Associations of recurrent miscarriages with chromosomal abnormalities, thrombophilia allelic polymorphisms and/or consanguinity in Saudi Arabia. BMC MEDICAL GENETICS 2016; 17:69. [PMID: 27766963 PMCID: PMC5073987 DOI: 10.1186/s12881-016-0331-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Recurrent pregnancy loss (RPL) or recurrent spontaneous abortion is an obstetric complication that affects couples at reproductive age. Previous reports documented a clear relationship between parents with chromosomal abnormalities and both recurrent miscarriages and infertility. However, limited data is available from the Arabian Peninsula which is known by higher rates of consanguineous marriages. The main goal of this study was to determine the prevalence of chromosomal abnormalities and thrombophilic polymorphisms, and to correlate them with RPL and consanguinity in Saudi Arabia. METHODS Cytogenetic analysis of 171 consent patients with RPL was performed by the standard method of 72-h lymphocyte culture and GTG banding. Allelic polymorphisms of three thrombophilic genes (Factor V Leiden, Prothrombin A20210G, MTHFR C677T) were performed using PCR-RFLP (restriction fragment length polymorphism) and gel electrophoresis. RESULTS Data analysis revealed that 7.6 % of patients were carrier of numerical or structural chromosomal abnormalities. A high rate of translocations (46 %) was associated to increased incidence of RPL. A significant correlation between consanguineous RPL patients and chromosomal abnormalities (P < 0.05) was found. Both Factor V Leiden and Prothrombin A20210G allelic polymorphisms were significantly associated with a higher prevalence of RPL. CONCLUSIONS This study demonstrated a strong association between RPL and the prevalence of chromosomal abnormalities and inherited thrombophilia. Given the high rate of consanguineous marriages in the Saudi population, these results underline the importance of systematic cytogenetic investigation and genetic counseling preferably at the premarital stage or at least during early pregnancy phase through preimplantation genetic diagnosis (PGD).
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Affiliation(s)
- Rola F. Turki
- Obstetrics and Gynecology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
- Center of Innovation in Personalized Medicine, King AbdulAziz University, P.O. Box: 80216, Jeddah, 21589 Kingdom of Saudi Arabia
| | - Mourad Assidi
- Center of Innovation in Personalized Medicine, King AbdulAziz University, P.O. Box: 80216, Jeddah, 21589 Kingdom of Saudi Arabia
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Huda A. Banni
- Center of Innovation in Personalized Medicine, King AbdulAziz University, P.O. Box: 80216, Jeddah, 21589 Kingdom of Saudi Arabia
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hanan A. Zahed
- Obstetrics and Gynecology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Sajjad Karim
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hans-Juergen Schulten
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Muhammad Abu-Elmagd
- Center of Innovation in Personalized Medicine, King AbdulAziz University, P.O. Box: 80216, Jeddah, 21589 Kingdom of Saudi Arabia
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdulrahim A. Rouzi
- Obstetrics and Gynecology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Osama Bajouh
- Obstetrics and Gynecology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
- Center of Innovation in Personalized Medicine, King AbdulAziz University, P.O. Box: 80216, Jeddah, 21589 Kingdom of Saudi Arabia
| | - Hassan S. Jamal
- Obstetrics and Gynecology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Mohammed H. Al-Qahtani
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adel M. Abuzenadah
- Center of Innovation in Personalized Medicine, King AbdulAziz University, P.O. Box: 80216, Jeddah, 21589 Kingdom of Saudi Arabia
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
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Prenatal Diagnosis of Rare Familial Unbalanced Translocation of Chromosomes 7 and 12. Case Rep Obstet Gynecol 2015; 2015:905946. [PMID: 26294991 PMCID: PMC4534596 DOI: 10.1155/2015/905946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 06/23/2015] [Accepted: 07/21/2015] [Indexed: 11/22/2022] Open
Abstract
Case Details. We report rare familial unbalanced translocation of chromosomes 7 and 12, which was diagnosed prenatally at 20+3 weeks of gestation. Woman's partner had been tested in the past and was found to be a carrier of a balanced translocation; his karyotype showed a balanced reciprocal translocation of 46, XY, t(7;12)(q34;q24,32). Partner's brother had an unbalanced form of the translocation with severe learning disability. The diagnosis of the anomaly was based on two- and three-dimensional ultrasound and microarray analysis. Ultrasonography findings included fetal microcephaly and alobar holoprosencephaly, dysmorphic face (flat occiput, absent nasal bone, microphthalmia, hypotelorism, and single nostril), and hyperechogenic bowel. Genome-wide array analysis and cytogenetic results from the amniotic fluid showed unbalanced translocation in chromosomes 7 and 12 with deletion of an approximately 16.5 Mb and a duplication of 6.1 Mb, respectively, Arr 7q34q36.3(142,668,576-159,161,648)x1,12q24.32q24.33(127,708,720-133,777,560)x3, karyotype (der (7) t(7;12) (q34;q24)pat). This unbalanced translocation was due to the segregation of the father's balanced translocation. In this particular case, the recurrence of an unbalanced translocation in the subsequent pregnancies is estimated to be 20%. Understanding the individuals' phenotype in association with the gain and loss of copy number is important and can further provide us with information on that particular region of the named chromosomes.
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Chen CP, Huang MC, Su YN, Tsai FJ, Wu PC, Lee CC, Town DD, Pan CW, Wang W. Recurrent distal 16q duplication and terminal 22q deletion: prenatal diagnosis and genetic counseling. Taiwan J Obstet Gynecol 2011; 49:544-7. [PMID: 21199767 DOI: 10.1016/s1028-4559(10)60117-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2010] [Indexed: 11/17/2022] Open
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Chen CP, Wu PC, Lin CJ, Su YN, Chern SR, Tsai FJ, Lee CC, Town DD, Chen WL, Chen LF, Lee MS, Pan CW, Wang W. Balanced Reciprocal Translocations Detected at Amniocentesis. Taiwan J Obstet Gynecol 2010; 49:455-67. [DOI: 10.1016/s1028-4559(10)60098-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2010] [Indexed: 11/26/2022] Open
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Barber JCK, Cockwell AE, Grant E, Williams S, Dunn R, Ogilvie CM. Is karyotyping couples experiencing recurrent miscarriage worth the cost? BJOG 2010; 117:885-8. [DOI: 10.1111/j.1471-0528.2010.02566.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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