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Briand-Suleau A, Martinovic J, Tosca L, Tou B, Brisset S, Bouligand J, Delattre V, Giurgea I, Bachir J, Folliot P, Goumy C, Francannet C, Guiochon-Mantel A, Benachi A, Vermeesch J, Tachdjian G, Vago P, Goossens M, Métay C. SALL4 and NFATC2: Two major actors of interstitial 20q13.2 duplication. Eur J Med Genet 2014; 57:174-80. [DOI: 10.1016/j.ejmg.2013.12.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 12/31/2013] [Indexed: 11/26/2022]
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Kemeny S, Pebrel-Richard C, Gouas L, Veronese L, Lemery D, Tchirkov A, Goumy C, Vago P. Prenatal ultrasound diagnosis of a 48,XXYY syndrome. Morphologie 2013; 97:65-7. [PMID: 23473874 DOI: 10.1016/j.morpho.2013.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The 48,XXYY syndrome is a rare uncommon gonosome aneuploidy and its incidence is estimated to be 1:18,000-1:40,000. The phenotype associated with this syndrome, classically described as Klinefelter variant, is extremely variable but developmental abnormalities are always present. Ultrasound signs during pregnancy are inconsistent, and only three prenatal cases have been described in the literature. Here, we report a case of 48,XXYY syndrome identified in prenatal period because of the presence of polyhydramnios and bilateral clubfeet on second trimester ultrasound. This observation shows the importance of chromosomal prenatal diagnosis in cases with bilateral clubfeet on morphologic ultrasound. This diagnosis is essential for further characterization of the prenatal phenotype and to improving genetic counselling.
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Affiliation(s)
- S Kemeny
- ERTICa, EA 4677, cytogénétique médicale, université Clermont 1, UFR médecine, CHU Clermont-Ferrand, CHU d'Estaing, 1, place Lucie-Aubrac, 63003 Clermont-Ferrand, France
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Debost-Legrand A, Capri Y, Gouas L, Pebrel-Richard C, Veronese L, Tchirkov A, Haoud K, Boespflug-Tanguy O, Goumy C, Vago P. De novo unbalanced translocation 2;4 characterized by metaphase CGH and array CGH in a child with mental retardation and dysmorphic features. ACTA ACUST UNITED AC 2010; 59:309-13. [PMID: 21145667 DOI: 10.1016/j.patbio.2010.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 04/20/2010] [Accepted: 11/02/2010] [Indexed: 12/08/2022]
Abstract
BACKGROUND It is known from postnatal diagnosis that imbalances of the subtelomeric regions contribute significantly to idiopathic mental retardation. PATIENT AND METHODS We report a case of a 4-year-old child with growth retardation, minor physical abnormalities, hypotonia and developmental delay associated with a derivative chromosome 4. Molecular cytogenetic investigations were performed to characterize the chromosomal rearrangement. RESULTS Multi fluorescence in situ hybridization revealed the presence of chromosome 2 material on the derivative chromosome 4. Metaphase comparative genomic hybridization detected a terminal 4q34 deletion. Array CGH analysis could precise breakpoints with duplication 2q36 → qter. The clinical phenotype was similar to those described in cases with a trisomy 2qter. CONCLUSION This study emphasizes the value of array CGH to detect or characterize chromosome rearrangements in mentally retarded patients. Unlike metaphase CGH, the high resolution of array CGH in subtelomeric regions allows an accurate description of chromosomal aberrations.
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Affiliation(s)
- A Debost-Legrand
- Service de Cytogénétique Médicale, Faculté de Médecine, CHU Clermont-Ferrand, Université Clermont 1, BP 38, 1 place Lucie-Aubrac, 63003 Clermont-Ferrand cedex 1, France
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Gremeau AS, Coste K, Blanc P, Goumy C, Francannet C, Dechelotte PJ, Vago P, Laurichesse-Delmas H, Labbe A, Lemery D, Sapin V, Gallot D. Congenital diaphragmatic hernia and genital anomalies: Emanuel syndrome. Prenat Diagn 2009; 29:816-8. [PMID: 19434659 DOI: 10.1002/pd.2289] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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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Goumy C, Gouas L, Tchirkov A, Roucaute T, Giollant M, Veronèse L, Francannet C, Vago P. Familial deletion 11q14.3-q22.1 without apparent phenotypic consequences: A haplosufficient 8.5 Mb region. Am J Med Genet A 2008; 146A:2668-72. [DOI: 10.1002/ajmg.a.32511] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Gouas L, Goumy C, Véronèse L, Tchirkov A, Vago P. Gene dosage methods as diagnostic tools for the identification of chromosome abnormalities. ACTA ACUST UNITED AC 2008; 56:345-53. [DOI: 10.1016/j.patbio.2008.03.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2008] [Accepted: 03/14/2008] [Indexed: 10/22/2022]
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Goumy C, Beaufrère AM, Tchirkov A, Gouas L, Gaspard F, Giollant M, Roucaute T, Veronèse L, Lemery D, Vago P. Larsen-like phenotype associated with partial trisomy 3p and monosomy 5p. Prenat Diagn 2008; 28:131-4. [PMID: 18236428 DOI: 10.1002/pd.1928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND We report on a fetus with radiographic features of Larsen Syndrome (LS) and unbalanced 3;5 translocation. Recently LS was shown to be caused by mutations in FLNB gene which maps on 3p14.3. METHODS Comparative genomic hybridization (CGH) was performed to search for genomic imbalances. Fluorescence in situ analysis (FISH) was done with BAC clone RP11-754F19 probe from the FLNB gene region (3p14.3). RESULTS CGH showed a large loss of the chromosome 5 short arm and a gain of half of the short arm of chromosome 3 resulting from a derivative chromosome 5. FISH analysis with FLNB probe demonstrated that it was not triplicated. Thus, we excluded the role of a gene dosage effect of FLNB in abnormal craniofacial development in this fetus. CONCLUSIONS To our knowledge, this is the first report of Larsen-like phenotype associated with unbalanced translocation resulting in partial trisomy 3p and monosomy 5p.
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Affiliation(s)
- C Goumy
- Univ Clermont1, UFR Médecine, CHU Clermont-Ferrand, Service de Cytogénétique Médicale, France
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Goumy C, Mihaescu M, Tchirkov A, Giollant M, Benier C, Francannet C, Jaffray JY, Geneix A, Vago P. De novo balanced complex chromosome rearrangement (CCR) involving chromosome 8, 11 and 16 in a boy with mild developmental delay and psychotic disorder. Genet Couns 2006; 17:371-9. [PMID: 17100206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Congenital Complex Chromosome rearrangements (CCRs) compatible with life are rare in humans. We report a de novo CCR involving chromosomes 8, 11 and 16 with 4 breakpoints in a patient with mild dysmorphic features, acquisition delay and psychotic disorder. Conventional cytogenetic analysis revealed an apparently balanced 8;16 translocation. Further FISH analysis with WCP 8 and WCP 16 probes revealed the presence of a third chromosome involved in the translocation. The multicolour karyotype confirmed the complexity of the rearrangement and showed that the derivative chromosome 8 was composed of 3 distinct segments derived from chromosomes 8, 16 and 11. The breakpoints of this complex rearrangement were located at 8q21, 11q14, 11q23 and 16q12. Comparative genomic hybridization (CGH) and array-CGH were performed to investigate the possibility of any genomic imbalance as a result of the complex rearrangement. No imbalance was detected by these two techniques. Our study showed: i) the necessity to confirm reciprocal translocations with FISH using painting probes, particularly when the karyotype resolution is weak; ii) the usefulness of multicolour karyotype for the characterization of structural chromosomal rearrangements, particularly when they are complex; iii) the usefulness of CGH and array-CGH in cases of abnormal phenotype and apparently balanced rearrangement in order to explore the breakpoints and to detect additional imbalances.
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Affiliation(s)
- C Goumy
- Cytogénétique Médicale, CHU / Faculté de Médecine, Clermont-Ferrand, France.
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Goumy C, Mihaescu M, Tchirkov A, Giollant M, Bonnet-Dupeyron MN, Jaffray JY, Geneix A, Perissel B, Francannet C, Boespflug-Tanguy O, Vago P. An unusual familial chromosome 9 "variant" with variable phenotype: characterization by CGH analysis. Morphologie 2005; 89:71-5. [PMID: 16110742 DOI: 10.1016/s1286-0115(05)83241-2] [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: 11/22/2022]
Abstract
Heterochromatin confined to pericentromeric and secondary constriction regions plays a major role in morphological variation of chromosome 9, because of its size and affinity for pericentric inversion. We report on a 6-year-old boy with growth and language delay, minor facial anomalies and unusual chromosome 9 variant with an extra-band in the centromeric region on the conventional karyotype. Subsequent analysis by FISH and CGH identified this variant as a dicentric chromosome 9 with a duplication of the 9p12-q21 region. An identical chromosome 9 variant was found in the mild language retarded brother and in the phenotypically normal father and grandfather. The presumed mechanism accounting for the phenotypic discordance observed in this family and the usefulness of CGH in characterization of such variants are discussed. To our knowledge, this is the first investigation of an unusual chromosome 9 variant by CGH.
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Affiliation(s)
- C Goumy
- Cytogénétique Médicale, CHU et Faculté de Médecine, BP 38, 63001 Clermont-Ferrand Cedex
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Goumy C, Beaufrère AM, Francannet C, Tchirkov A, Laurichesse Delmas H, Geissler F, Lemery D, Dechelotte PJ, Vago P. Prenatal detection of mosaic isochromosome 20q: a fourth report with abnormal phenotype. Prenat Diagn 2005; 25:653-5. [PMID: 16049989 DOI: 10.1002/pd.1216] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 11/07/2022]
Abstract
We described a new case of mosaic isochromosome 20q revealed by amniocentesis. The propositus presented with craniofacial dysmorphism, clubfeet, and vertebral abnormalities. A 46,XX,i(20)(q10)[14]/46,XX[1] karyotype was confirmed by FISH on cultured cells. The pregnancy was terminated. From review of literature, fetus with mosaic isochromosome 20q identified on amniocentesis are most likely to be phenotypically and cytogenetically normal after birth. So we performed CGH and array-CGH to exclude another possible imbalance. We discuss here the possible relation between this chromosomal abnormality and the abnormal phenotype.
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Affiliation(s)
- C Goumy
- Cytogénétique Médicale, CHU/Faculté de Médecine Clermont-Ferrand, France
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Simon LB, Goumy C, Perissel B, Minard PM, Itoua-Ngaporo AA, Vago P. A novel reciprocal translocation associated with chronic eosinophilic leukemia. Leuk Lymphoma 2004; 46:299-302. [PMID: 15621819 DOI: 10.1080/10428190400015766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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