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Wang L, Dong B, Xie Y, Kang H, Wu Y. The molecular mechanisms of recombinant chromosome 18 with parental pericentric inversions and a review of the literature. J Hum Genet 2023; 68:625-634. [PMID: 37161033 DOI: 10.1038/s10038-023-01157-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/07/2023] [Accepted: 04/26/2023] [Indexed: 05/11/2023]
Abstract
Chromosomal rearrangements mostly result from non-allelic homologous recombination mediated by low-copy repeats (LCRs) or segmental duplications (SDs). Recent studies on recombinant chromosome 18 (rec (18)) have focused on diagnoses and clinical phenotypes. We diagnosed two cases of prenatal rec (18) and identified precise breakpoint intervals using karyotype and chromosomal microarray analyses. We analyzed the distribution characteristics of breakpoint repetitive elements to infer rearrangement mechanisms and reviewed relevant literature to identify genetic trends. Among the 12 families with 25 pregnancies analyzed, 68% rec (18), 24% spontaneous abortions, and 8% normal births were reported. In the 17 rec (18) cases, 65% presented maternal origin and 35% were paternal. Short-arm breakpoints at p11.31 were reported in 10 cases, whereas the long-arm breakpoints were located at q21.3 (6 cases) and q12 (4 cases). Breakpoints of pericentric inversions on chromosome 18 are concentrated in p11.31, q21.3, and q12 regions. Rearrangements at 18p11.31 are non-recurrent events. ALUs, LINE1s, and MIRs were enriched at the breakpoint regions (1.85 to 3.42-fold enrichment over the entire chromosome 18), while SDs and LCRs were absent. ALU subfamilies had sequence identities of 85.94% and 83.01% between two pair breakpoints. Small repetitive elements may mediate recombination-coupled DNA repair processes, facilitating rearrangements on chromosome 18. Maternal inversion carriers are more prone to abnormal recombination in prenatal families with rec (18). Recombinant chromosomes may present preferential segregation during gamete formation.
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Affiliation(s)
- Lingxi Wang
- Prenatal Diagnosis Center, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China.
| | - Bing Dong
- Department of Eugenics, Meishan Women and Children's Hospital, Alliance Hospital of West China Second University Hospital, Sichuan University, Meishan, 620000, China
| | - Yamei Xie
- Prenatal Diagnosis Center, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Han Kang
- Prenatal Diagnosis Center, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Yong Wu
- Prenatal Diagnosis Center, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
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2
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Gökpınar İli E, Altıner Ş, Karabulut HG. Cytogenetic, Molecular, and Phenotypic Characterization of a Patient with de novo Derivative Chromosome 18 and Review of the Literature. Cytogenet Genome Res 2019; 159:74-80. [PMID: 31658462 DOI: 10.1159/000503574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2019] [Indexed: 11/19/2022] Open
Abstract
We present a patient with a de novo derivative chromosome 18 which includes a terminal deletion of 18p and a terminal duplication of 18q accompanied by a cryptic duplication of 18p. The girl had mild dysmorphic features such as micro-retrognathia, upslanted palpebral fissures, bilateral epicanthus, high palate, low-set ears, short neck, and full cheeks. She also had an H-type tracheoesophageal fistula which required surgery. Her cognitive and motor skills were delayed. Karyotype analysis showed an additional segment on the short arm of chromosome 18. Chromosomal microarray revealed a 7.3-Mb terminal loss from 18p11.32 to 18p11.23, a 22.2-Mb terminal gain from 18q21.31 to 18q23, and a 3.9-Mb interstitial gain from 18p11.22 to 18p11.21. We hypothesize that the mother has gonadal mosaicism for normal chromosome 18, der(18)dup(p11.22p11.21), and der(18)dup(p11. 22p11.21)inv(18)(p11.22q21.31), or both the terminal del/dup and the interstitial duplication occurred simultaneously.
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3
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Poterico JA, Vásquez F, Chávez-Pastor M, Trubnykova M, Chavesta F, Chirinos J, Salcedo N, Mena R, Cubas S, González R, Alvariño R, Abarca-Barriga H. A Peruvian Child with 18p-/18q+ Syndrome and Persistent Microscopic Hematuria. J Pediatr Genet 2017; 6:258-266. [PMID: 29142771 DOI: 10.1055/s-0037-1604099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 06/01/2017] [Indexed: 12/30/2022]
Abstract
Chromosome 18 pericentric inversion carriers could have offspring with recombinant chromosomes, leading to patients with clinical variable manifestations. Patients with 18p-/18q+ rearrangements share some clinical characteristics, while other characteristics differ. Factors for such divergence include the length of the inverted segment, among others. Here, we describe a Peruvian child with dysmorphic features, intellectual disability persistent microscopic hematuria, aortic pseudocoarctation, and descending aorta arteritis, among others. Karyotype analysis of family members determined the mother as the carrier of a pericentric inversion: 18[inv(18)(p11.2q21.3)]. This child carries a recombinant chromosome 18, with chromosomal microarray analysis detecting two genomic imbalances in patient's chromosome 18: one duplicated region and one deleted segment in the large and the short arms, respectively. Persistent microscopic hematuria has not been reported among 18p-/18q+ phenotypes. Our patient elucidates that other factors play significant and yet unknown roles for not fulfilling the proposed genotype-phenotype correlation associated with hemizygosity in this type of recombinant chromosome 18 or presenting these features as the patient ages.
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Affiliation(s)
- Julio A Poterico
- Department of Pathology, Instituto Nacional de Enfermedades Neoplásicas, Lima, Perú
| | - Flor Vásquez
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Miguel Chávez-Pastor
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú.,Faculty of Human Medicine Alberto Hurtado, Universidad Peruana Cayetano Heredia, Lima, Perú
| | - Milana Trubnykova
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Félix Chavesta
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Jenny Chirinos
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Nancy Salcedo
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Rosmery Mena
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Sulema Cubas
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Rocío González
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Rossana Alvariño
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú
| | - Hugo Abarca-Barriga
- Department of Genetic & Inborn Error Metabolism, Instituto Nacional de Salud del Niño, Breña, Lima, Perú.,Postgraduate Program at Odontopediatrics, Universidad Científica del Sur, Lima, Perú
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4
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Douglas C, Smith SA, Rohena L. Novel case of paternal paracentric inversion causing partial trisomy 13 and review of the literature. Am J Med Genet A 2017; 173:1673-1680. [PMID: 28394407 DOI: 10.1002/ajmg.a.38192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/12/2016] [Accepted: 01/02/2017] [Indexed: 11/09/2022]
Abstract
Partial trisomies have often been reported secondary to inversion mutations. These occurrences are most frequently associated with pericentric inversions. In this report, we describe the first documented case of partial trisomy 13 secondary to a parental paracentric inversion, in this case a paternal paracentric 13q inversion. Our Patient exhibits a variety of clinical findings including global developmental delay with intellectual disability, sensorineural hearing loss, bilateral congenital polar cataracts with associated foveal and optic nerve hypoplasia, right retinal detachment, atrial septal defect, absence of corpus callosum, celiac disease, microcephaly, as well as other dysmorphic features.
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Affiliation(s)
- Chad Douglas
- Department of Pediatrics, San Antonio Military Medical Center, San Antonio, Texas
| | - Stephen A Smith
- Department of Surgery, San Antonio Military Medical Center, San Antonio, Texas
| | - Luis Rohena
- Division of Medical Genetics, Department of Pediatrics, San Antonio Military Medical Center, San Antonio, Texas.,Department of Pediatrics, University of Texas Health Science Center at San Antonio, San Antonio, Texas
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5
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Lustosa-Mendes E, dos Santos AP, Viguetti-Campos NL, Vieira TP, Gil-da-Silva-Lopes VL. A boy with partial dup(18q)/del(18p) due to a maternal pericentric inversion: Genotype-phenotype correlation and risk of recombinant chromosomes based on systematic review of the literature. Am J Med Genet A 2016; 173:143-150. [DOI: 10.1002/ajmg.a.37976] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 08/15/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Elaine Lustosa-Mendes
- Faculty of Medical Sciences; Department of Medical Genetics; University of Campinas (Unicamp); São Paulo Brazil
| | - Ana Paula dos Santos
- Faculty of Medical Sciences; Department of Medical Genetics; University of Campinas (Unicamp); São Paulo Brazil
| | - Nilma Lúcia Viguetti-Campos
- Faculty of Medical Sciences; Department of Medical Genetics; University of Campinas (Unicamp); São Paulo Brazil
| | - Társis Paiva Vieira
- Faculty of Medical Sciences; Department of Medical Genetics; University of Campinas (Unicamp); São Paulo Brazil
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Zamani AG, Acar A, Durakbasi-Dursun G, Yildirim MS, Ceylaner S, Tuncez E. Recurrent proximal 18p monosomy and 18q trisomy in a family due to a pericentric inversion. Am J Med Genet A 2014; 164A:1239-44. [PMID: 24478222 DOI: 10.1002/ajmg.a.36410] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 11/10/2013] [Indexed: 11/08/2022]
Abstract
Here, we report on a family with pericentric inversion of chromosome 18 [inv(18)(p11.2q21)] and two recombinants with a duplication of q21 → qter and a deletion of p11.2 → pter regions in a four-generation family. This chromosomal abnormality was inherited in our first patient from the father, while it was transmitted to the second patient from the mother. Array-CGH analysis were used to better characterize duplicated and deleted chromosomal regions and showed no genomic copy number variation (CNV) differences between these two relatives. We discussed genotype-phenotype correlations including previously reported.
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Affiliation(s)
- Ayse Gul Zamani
- Meram Medical Faculty, Department of Medical Genetics, Necmettin Erbakan University, Konya, Turkey
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Kariminejad A, Kariminejad R, Moshtagh A, Zanganeh M, Kariminejad MH, Neuenschwander S, Okoniewski M, Wey E, Schinzel A, Baumer A. Pericentric inversion of chromosome 18 in parents leading to a phenotypically normal child with segmental uniparental disomy 18. Eur J Hum Genet 2011; 19:555-60. [PMID: 21326286 DOI: 10.1038/ejhg.2010.252] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
In this study, we report a familial inversion of chromosome 18, inv(18)(p11.31q21.33), in both members of a consanguineous couple. Their first child had inherited one balanced pericentric inversion along with a recombinant chromosome 18 resulting in dup(18q)/del(18p), and had mild dysmorphic features in the absence of mental and developmental retardation. The second child had received two recombinant chromosomes 18, from the mother a derivative chromosome 18 with dup(18p)/del(18q) and from the father a derivative chromosome 18 with dup(18q)/del(18p). The aberration was prenatally detected; however, as the two opposite aneuploidies were thought to compensate each other, the family decided to carry on with the pregnancy, knowing that uniparental disomy for the segments outside the inversion could have an adverse influence on the development of the child. Uniparental disomy was confirmed by SNP arrays. The child, who has been followed up until the age of 20 months, is healthy and normal. It seems to be the first reported case with two opposite recombinant chromosomes that compensate each other and lead to segmental uniparental disomy for two segments on the chromosome, one maternal and the other paternal.
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8
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Prabhakara K, Wyandt HE, Huang XL, Prasad KS, Ramadevi AR. Recurrent proximal 18p monosomy and 18q trisomy in a family with a maternal pericentric inversion of chromosome 18. ACTA ACUST UNITED AC 2004; 47:297-303. [PMID: 15337476 DOI: 10.1016/j.anngen.2004.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2003] [Accepted: 03/25/2004] [Indexed: 11/29/2022]
Abstract
We report a recurrent partial monosomy of 18p10-->11.2 and proximal partial trisomy of 18q10-->21.3 caused by a maternal pericentric inversion of chromosome 18, involving breakpoints p11.2 and q21q21.3 Based on cytogenetics and FISH analysis, we speculate that the recurrent chromosome abnormality in the proband and in the fetus was the result of a translocation, possibly in a germ cell or germ cell precursor, between the maternal normal 18 and her inverted 18, resulting in maternal germinal mosaicism, i.e. 46,XX,inv(18)/46,XX,t[18;inv(18)][q10;q10]. The unbalanced karyotype of the proband and the fetus is 46,XY,+18,der[18;inv(18)][q10;q10]. To the best of our knowledge, there are no reports of this combination of proximal 18p monosomy and proximal 18q trisomy. The other interesting observation was association of Hirschsprung's disease in the proband.
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Affiliation(s)
- K Prabhakara
- Diagnostics Division, Center for DNA Fingerprinting & Diagnostics, 7-18, ECIL Road, Nacharam, Hyderabad 500076, India
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Vermeulen SJ, Speleman F, Vanransbeeck L, Verspeet J, Menten B, Verschraegen-Spae MR, Wilde PD, Messiaen L, Michaelis RC, Leroy JG. Familial pericentric inversion of chromosome 18: behavioral abnormalities in patients heterozygous for either the dup(18p)/del(18q) or dup(18q)/del(18p) recombinant chromosome. Eur J Hum Genet 2004; 13:52-8. [PMID: 15470365 DOI: 10.1038/sj.ejhg.5201281] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022] Open
Abstract
We describe a family in which the largest hitherto reported pericentric inversion of chromosome 18, inv(18)(p11.22q23), segregates. Individuals heterozygous for the nonrecombinant inversion were unaffected. However, those heterozygous for either the dup(18p)/del(18q) or dup(18q) /del(18p) recombinant exhibited mild learning difficulty, personality disorders and deficient social behavior in the absence of mental retardation. Of the three family members tested, the behavioral abnormalities were more prominent in the two individuals with the dup(18p)/del(18q) recombinant than in the one with the dup(18q)/del(18p) recombinant. Genetic counseling issues for this family, in particular for the affected, include the enhanced probability of reduced fertility as well as the recurrence risk of the parental inversion equaling 1/2 in surviving offspring. This observation kindles the interest in determining the frequency of subtelomeric rearrangements in individuals with learning difficulty and deficiency in social interaction, phenotypic features often considered to be of multifactorial causation.
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Affiliation(s)
- Stefan J Vermeulen
- Center for Medical Genetics, 0K5, Ghent University Hospital, Ghent, Belgium.
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Sutcliffe MJ, Mueller OT, Kousseff BG, Dumont DP, McFarland JA, Mawani F, Conforto D, Ranells JD. Three cell line mosaicism involving structural and numerical abnormalities of chromosome 18 in a 3.5-year-old girl: 47,XX,+18/47,XX,+del(18)(q22)/46,XX. AMERICAN JOURNAL OF MEDICAL GENETICS 2001; 102:192-9. [PMID: 11477615 DOI: 10.1002/1096-8628(20010801)102:2<192::aid-ajmg1445>3.0.co;2-d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report on a 3.5-year-old girl with a mosaic karyotype including full trisomy 18, normal cells and a majority of cells with partial trisomy involving an extra chromosome 18 deleted at band q22. She had cardiac and CNS anomalies, dysmorphic facial features failure to thrive and developmental delay. A gastrostomy tube was placed at 2 years of age. The combination of improved nutrition and optimal developmental therapy has led to her sitting supported, attempting to stand and enhancement of her cognitive and non-verbal communication abilities. Molecular investigation of the patient and her parents using microsatellite analysis has led to the conclusion that, as expected, the additional copy of chromosome 18 constituting the full trisomic cell line is maternal meiosis I in origin. The data, however, indicate that in the trisomic cell line containing the deleted chromosome 18q, the structurally abnormal 18 was of paternal origin. We think this case is the first described with both structural and numerical trisomic mosaicism involving chromosome 18 in a liveborn infant. We propose a mechanism of origin and review the literature, comparing the clinical presentation of this case with individuals having full or partial trisomy 18.
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Affiliation(s)
- M J Sutcliffe
- Department of Pediatrics, University of South Florida, Tampa, Florida, USA.
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Ishii F, Fujita H, Nagai A, Ogihara T, Kim HS, Okamoto R, Mino M. Case report of rec(7)dup(7q)inv(7)(p22q22) and a review of the recombinants resulting from parental pericentric inversions on any chromosomes. AMERICAN JOURNAL OF MEDICAL GENETICS 1997; 73:290-5. [PMID: 9415687 DOI: 10.1002/(sici)1096-8628(19971219)73:3<290::aid-ajmg12>3.0.co;2-e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report a rare case of duplication for 7q22 --> 7qter and deletion for 7p22 --> 7pter, resulting from a meiotic recombination of a paternal pericentric inversion, inv(7)(p22q22). The newborn boy had the 7q trisomy syndrome. In addition, the diagnosis of chondrodysplasia punctata was made from lumbar and hand X-ray films taken soon after birth. Only two cases of rec(7)dup(7q), both in a single family, have been reported previously. We review 133 offspring with recombinations resulting from pericentric inversions on any chromosomes reported between 1981 and 1995. Of the 133 cases, 110 had a long-arm duplication and short-arm deletion, while only 23 had a short-arm duplication and long-arm deletion. In 85 of the 133 cases, the mother was an inversion carrier (five carriers had two affected offspring), and in 46, the carrier was a father (one carrier had three affected offspring). Kaiser [Hum Genet 1984;68:1-47] reviewed 63 offspring with recombinations derived from a parental pericentric inversion reported between 1972 and 1981. In both surveys, recombinations resulting from pericentric inversions of chromosomes 1, 12, 19, and Y were not found.
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Affiliation(s)
- F Ishii
- Mitsubishi Kagaku Bio-Clinical Laboratories, Inc., Fukushima, Osaka, Japan
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Israëls T, Hoovers J, Turpijn HM, Wijburg FA, Hennekam RC. Partial deletion of 18p and partial duplication of 18q caused by a paternal pericentric inversion. Clin Genet 1996; 50:520-4. [PMID: 9147887 DOI: 10.1111/j.1399-0004.1996.tb02726.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Here we report on a boy with both a partial deletion of chromosome 18p and a partial duplication of chromosome 18q, caused by a paternal pericentric inversion (46,XY,rec(18),dup q,inv(18)(p11.2q21.1)pat). The findings in the patient are compared to those in the literature. The symptoms in the described patient can be explained for the major part by the 18p- and 18q+ syndromes separately. A specific 18p-/18q+ syndrome cannot be clearly delineated yet. Inspiratory stridor is a symptom that has not been described before in either 18p- or 18q+, but has been found twice before in patients with the combined 18p-/18q+ syndrome.
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Affiliation(s)
- T Israëls
- University of Amsterdam, Department of Pediatrics, Amsterdamic, The Netherlands
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13
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Affiliation(s)
- M Elbistan
- Department of Medical Biology and Genetics, Ondokuz Mayis University, Samsun, Turkey
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14
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Ayukawa H, Tsukahara M, Fukuda M, Kondoh O. Recombinant chromosome 18 resulting from a maternal pericentric inversion. AMERICAN JOURNAL OF MEDICAL GENETICS 1994; 50:323-5. [PMID: 8209910 DOI: 10.1002/ajmg.1320500405] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We report on a newborn girl with duplication of 18q12.2-->18qter and deficiency of 18p11.2-->18pter which resulted from meiotic recombination of the maternal pericentric inversion, inv(18)(p11.2q12.2). Her clinical manifestations were compatible with those of partial trisomy 18q syndrome. We review the previously reported 9 cases in 8 families of rec(18) resulting from recombination of a parental pericentric inversion.
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Affiliation(s)
- H Ayukawa
- Department of Pediatrics, Yamaguchi University School of Medicine, Japan
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