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Marle N, Martinet D, Aboura A, Joly-Helas G, Andrieux J, Flori E, Puechberty J, Vialard F, Sanlaville D, Fert Ferrer S, Bourrouillou G, Tabet AC, Quilichini B, Simon-Bouy B, Bazin A, Becker M, Stora H, Amblard S, Doco-Fenzy M, Molina Gomes D, Girard-Lemaire F, Cordier MP, Satre V, Schneider A, Lemeur N, Chambon P, Jacquemont S, Fellmann F, Vigouroux-Castera A, Molignier R, Delaye A, Pipiras E, Liquier A, Rousseau T, Mosca AL, Kremer V, Payet M, Rangon C, Mugneret F, Aho S, Faivre L, Callier P. Molecular characterization of 39 de novo sSMC: contribution to prognosis and genetic counselling, a prospective study. Clin Genet 2013; 85:233-44. [PMID: 23489061 DOI: 10.1111/cge.12138] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 03/05/2012] [Accepted: 03/05/2012] [Indexed: 11/27/2022]
Abstract
Small supernumerary marker chromosomes (sSMCs) are structurally abnormal chromosomes that cannot be characterized by karyotype. In many prenatal cases of de novo sSMC, the outcome of pregnancy is difficult to predict because the euchromatin content is unclear. This study aimed to determine the presence or absence of euchromatin material of 39 de novo prenatally ascertained sSMC by array-comparative genomic hybridization (array-CGH) or single nucleotide polymorphism (SNP) array. Cases were prospectively ascertained from the study of 65,000 prenatal samples [0.060%; 95% confidence interval (CI), 0.042-0.082]. Array-CGH showed that 22 markers were derived from non-acrocentric markers (56.4%) and 7 from acrocentic markers (18%). The 10 additional cases remained unidentified (25.6%), but 7 of 10 could be further identified using fluorescence in situ hybridization; 69% of de novo sSMC contained euchromatin material, 95.4% of which for non-acrocentric markers. Some sSMC containing euchromatin had a normal phenotype (31% for non-acrocentric and 75% for acrocentric markers). Statistical differences between normal and abnormal phenotypes were shown for the size of the euchromatin material (more or less than 1 Mb, p = 0.0006) and number of genes (more or less than 10, p = 0.0009). This study is the largest to date and shows the utility of array-CGH or SNP array in the detection and characterization of de novo sSMC in a prenatal context.
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Affiliation(s)
- N Marle
- Département de Génétique, Hôpital Le Bocage, Université de Bourgogne, Dijon, France
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Mosca AL, Callier P, Faivre L, Laurent N, Rousseau T, Marle N, Payet M, Guy H, Couvreur S, Masurel-Paulet A, Sagot P, Thauvin-Robinet C, Mugneret F. A prenatal case of inverted duplication with terminal deletion of 5p not including the cat-like cry critical region. Am J Med Genet A 2011; 155A:2031-4. [PMID: 21739595 DOI: 10.1002/ajmg.a.34105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Accepted: 04/18/2011] [Indexed: 11/07/2022]
Affiliation(s)
- A L Mosca
- Laboratoire de Cytogénétique, CHU le Bocage, Dijon, France
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Mosca AL, Pinson L, Andrieux J, Copin H, Bigi N, Puechberty J, Sarda P, Receveur A, Sevestre H, Pigeonnat S, Marle N, Payet M, Ragon C, Rousseau T, Thauvin-Robinet C, Masurel-Paulet A, Schneider A, Laurent N, Sagot P, Mugneret F, Lefort G, Faivre L, Callier P. Refining the critical region for congenital diaphragmatic hernia on chromosome 15q26 from the study of four fetuses. Prenat Diagn 2011; 31:912-4. [PMID: 21706508 DOI: 10.1002/pd.2793] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Mosca AL, Callier P, Masurel-Paulet A, Thauvin-Robinet C, Marle N, Nouchy M, Huet F, Dipanda D, De Paepe A, Coucke P, Mugneret F, Faivre L. Cytogenetic and array-CGH characterization of a 6q27 deletion in a patient with developmental delay and features of Ehlers-Danlos syndrome. Am J Med Genet A 2010; 152A:1314-7. [PMID: 20425843 DOI: 10.1002/ajmg.a.33254] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- A L Mosca
- Département de Génétique, CHU le Bocage, Dijon, France.
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Callier P, Faivre L, Pigeonnat S, Quilichini B, Marle N, Thauvin-Robinet C, Mosca AL, Masurel-Paulet A, Rousseau T, Sagot P, Laurent N, Mugneret F. Contribution of array CGH in prognosis and genetic counselling of prenatally diagnosed supernumerary ring chromosome 20. Prenat Diagn 2009; 29:1002-5. [PMID: 19670346 DOI: 10.1002/pd.2333] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Callier P, Faivre L, Marle N, Thauvin-Robinet C, Guy J, Mosca AL, D'Athis P, Masurel-Paulet A, Assous D, Teyssier JR, Huet F, Mugneret F. Detection of an interstitial 3q21.1-q21.3 deletion in a child with multiple congenital abnormalities, mental retardation, pancytopenia, and myelodysplasia. Am J Med Genet A 2009; 149A:1323-6. [PMID: 19449416 DOI: 10.1002/ajmg.a.32857] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P Callier
- Département de Génétique, Hôpital Le Bocage, Dijon, France.
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Mosca AL, Callier P, Faivre L, Marle N, Mejean N, Thauvin-Robinet C, Masurel-Paulet A, Madinier N, Durand C, Couillaud G, Ragot S, Huet F, Teyssier JR, Mugneret F. Polymicrogyria in a child with inv dup del(9p) and 22q11.2 microduplication. Am J Med Genet A 2009; 149A:475-81. [PMID: 19213026 DOI: 10.1002/ajmg.a.32665] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Polymicrogyria (PMG) is a relatively common malformation of the cortex for which the pathogenesis remains poorly understood. Both acquired and genetic causes are known, and to date more than 70 cases of PMG have been associated with chromosomal abnormalities. Here we report on a 12-year-old girl presenting with asymmetrical PMG predominantly affecting the right occipital lobe. She was the only child of consanguineous parents. At 7 years of age she was referred for mental retardation with speech delay and seizures. Cytogenetic studies of the patient revealed an inverted 9p duplication/deletion and bacterial artificial chromosomes (BACs)-array also showed a 22q11.2 microduplication confirmed by quantitative PCR. This case is of interest in the search for candidate genes and emphasizes the importance of the 22q11 region in PMG. It also highlights the efficiency of BACs-array in detecting complex rearrangements.
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Affiliation(s)
- A L Mosca
- Département de Génétique, CHU le Bocage, Dijon, France.
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Callier P, Faivre L, Thauvin-Robinet C, Marle N, Mosca AL, D'Athis P, Guy J, Masurel-Paulet A, Joly L, Guiraud S, Teyssier JR, Huet F, Mugneret F. Array-CGH in a series of 30 patients with mental retardation, dysmorphic features, and congenital malformations detected an interstitial 1p22.2-p31.1 deletion in a patient with features overlapping the Goldenhar syndrome. Am J Med Genet A 2008; 146A:2109-15. [PMID: 18629884 DOI: 10.1002/ajmg.a.32447] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Genosensor Array 300 (Abbott) is a multiplex platform for array-based comparative genomic hybridization that detects unbalanced genomic aberrations including whole chromosome gains/losses, microdeletions, duplications and unbalanced subtelomeric rearrangements. A series of 30 patients with unexplained mental retardation, dysmorphic features, congenital abnormalities and normal high resolution karyotype and FISH subtelomeric studies were analyzed using Genosensor Array 300 array-CGH. We identified a chromosomal aberration in one patient with an interstitial 1p31.1 deletion. FISH analysis with BACs specific probes of the 1p region confirmed the interstitial 1p22.2-p31.1 deletion. The patient was a 20-year-old man with short stature, facial dysmorphism including asymmetry, scoliosis, severe psychomotor delay and an epibulbar dermoid cyst. The phenotype was compatible with Goldenhar syndrome despite the absence of asymmetric ears. This observation is of interest since it could be a clue in the search for the genes responsible for Goldenhar syndrome. This study demonstrates the utility of the array-CGH technology in detecting interstitial deletions.
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Affiliation(s)
- P Callier
- Département de Génétique, Hôpital Le Bocage, Dijon, France.
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Callier P, Faivre L, Marle N, Thauvin-Robinet C, Mosca AL, Masurel-Paulet A, Borgnon J, Falcon-Eicher S, Danino A, Malka G, Le Merrer M, Huet F, Mugneret F. Untreated growth hormone deficiency with extremely short stature, bone dysplasia, cleft lip--palate and severe mental retardation in a 26-year-old man with a de novo unbalanced translocation t(1;12)(q24;q24). Eur J Med Genet 2007; 50:455-64. [PMID: 17720646 DOI: 10.1016/j.ejmg.2007.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2007] [Accepted: 06/26/2007] [Indexed: 10/23/2022]
Abstract
We report on a 26-year-old patient presenting with extremely short stature (height 72cm, weight 6.5kg, OFC 42.5cm), facial dysmorphism, cleft lip--palate, severe mental retardation and de novo 1q24.2--q25.2 and 12q24.31 interstitial deletion. He was the only child of non-consanguineous parents and his birth length was 43cm. He had severe feeding difficulties and required enteral nutrition until the age of 3 years. Standard cytogenetic analysis showed an apparently balanced de novo translocation t(1;12)(q24;q24). Endocrine studies at 11 years of age for severe growth retardation revealed multiple pituitary hormone deficiency with severe growth hormone deficiency, but the child was untreated because of associated mental retardation. At 26 years of age, he could not walk or speak and had no signs of puberty. Investigations revealed spondylo-epi-metaphyseal dysplasia with severe osteoporosis, enlarged aorta when compared to the patient's size and apparently normal pituitary development. High resolution karyotype showed a 1q24-q25 deletion, and comparative genomic hybridization studies confirmed the 1q interstitial deletion. FISH studies of both breakpoints using PACs and BACs enabled us to further characterize the 1q interstitial deletion (1q24.2-1q25.2) and also revealed a 12q24.31 interstitial microdeletion. This case is compared with previously reported patients with similar deletions, but the untreated pituitary deficiency could also be responsible in part for the severity of the growth deficiency. This observation is of interest for two reasons. First, these deletions could be a clue in the search for a gene responsible for growth hormone deficiency/midline defects. Second, it shows the importance of molecular cytogenetics in the study of de novo apparently balanced translocation with abnormal phenotype.
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Affiliation(s)
- P Callier
- Laboratoire de Cytogénétique, Département de Génétique, CHU Le Bocage, 2 Bd Maréchal de Lattre de Tassigny, 21034 Dijon cédex, France.
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Mosca AL, Callier P, Leheup B, Marle N, Jalloul M, Coffinet L, Feillet F, Valduga M, Jonveaux P, Mugneret F. Fortuitous FISH diagnosis of an interstitial microdeletion (5)(q31.1q31.2) in a girl suspected to present a cri-du-chat syndrome. Am J Med Genet A 2007; 143A:1342-7. [PMID: 17506096 DOI: 10.1002/ajmg.a.31742] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Constitutional interstitial deletions of 5q are relatively rare and most are poorly characterized cytogenetically. Consequently a definite karyotype-phenotype correlation is difficult to establish. We report on a new case of a girl presenting with an abnormal cry, upslanting palpebral fissures, hypertelorism, anteverted nostrils, microretrognathia, growth retardation, and an adenoid cyst at the base of the tongue. The first suspected diagnosis was cri-du-chat syndrome because of the mewing cry. Standard cytogenetic analyses were interpreted as normal, but FISH studies using the probe of cri-du-chat syndrome with the control probe EGR1 (5q31.2)/D5S23 (Abbott) revealed a 5q31.2 microdeletion which was then confirmed by CGH-array (Abbott). FISH studies using PACs and BACs clones (Rocchi, Italia) enabled us to characterize the breakpoints of the deleted region. Cytogenetic analysis with FISH studies revealed a normal karyotype with normal 5q31 region in both parents. This case is compared with the other cases reported in the literature.
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Affiliation(s)
- A L Mosca
- Laboratoire de Cytogénétique, CHU du Bocage, Dijon, France.
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