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Abstract
The aim of this study is to review the clinical, radiological and molecular findings of the bent bone dysplasia group including Stüve-Wiedemann syndrome due to LIFR mutations, Compomelic dysplasia due to SOX9 mutations and Kyphomelic dysplasia with no known molecular bases.
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Geneviève D, Amiel J, Viot G, Le Merrer M, Sanlaville D, Urtizberea A, Gérard M, Munnich A, Cormier-Daire V, Lyonnet S. Atypical findings in Kabuki syndrome: report of 8 patients in a series of 20 and review of the literature. Am J Med Genet A 2005; 129A:64-8. [PMID: 15266618 DOI: 10.1002/ajmg.a.30144] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Kabuki syndrome (KS) is a rare multiple congenital anomaly/mental retardation syndrome with an estimated frequency of 1/32,000 in Japan. Five major criteria delineate KS namely postnatal short stature, skeletal anomalies, moderate mental retardation, dermatoglyphic anomalies, and a characteristic facial dysmorphism. Here we report on a series of 20 sporadic KS patients and we focus on some rare and atypical features that we have observed: chronic and/or severe diarrhea (4/20) including celiac disease, diaphragmatic defects (3/20), pseudarthrosis of the clavicles (2/20), vitiligo (2/20), and persistent hypoglycemia (2/20). Other occasional findings were severe autoimmune thrombopenia, cerebellar vermis atrophy, and myopathic features. Interestingly, one of our KS patients presented with a clinical overlap with CHARGE syndrome (right eye microphtalmia with optic nerve coloboma, VSD, bilateral cryptorchidism, and severe deafness). Because these features are more frequent in our series than previously described, we propose to carefully investigate these manifestations during KS patient survey in an attempt to determine their real frequency and in order to improve clinical management.
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Geneviève D, Le Merrer M, Munnich A, Maroteaux P, Cormier-Daire V. Long-term follow-up in a patient with metatropic dysplasia. Am J Med Genet A 2005; 135:342-3. [PMID: 15889420 DOI: 10.1002/ajmg.a.30710] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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54
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Genevieve D, Baumann C, Huber C, Faivre L, Sanlaville D, Bodemer C, Hadj-Rabia S, Assoumou A, Verloes A, Raqbi F, Munnich A, Cormier-Daire V. A novel form of syndromic cutis laxa with facial dysmorphism, cleft palate, and mental retardation. J Med Genet 2004; 41:e77. [PMID: 15173243 PMCID: PMC1735811 DOI: 10.1136/jmg.2003.013573] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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55
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Borochowitz ZU, Scheffer D, Adir V, Dagoneau N, Munnich A, Cormier-Daire V. Spondylo-epi-metaphyseal dysplasia (SEMD) matrilin 3 type: homozygote matrilin 3 mutation in a novel form of SEMD. J Med Genet 2004; 41:366-72. [PMID: 15121775 PMCID: PMC1735768 DOI: 10.1136/jmg.2003.013342] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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56
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Borck G, Rio M, Sanlaville D, Redon R, Molinari F, Bacq D, Raoul O, Cormier-Daire V, Lyonnet S, Amiel J, Le Merrer M, de Blois MC, Prieur M, Vekemans M, Carter NP, Munnich A, Colleaux L. Genome-wide screening using automated fluorescent genotyping to detect cryptic cytogenetic abnormalities in children with idiopathic syndromic mental retardation. Clin Genet 2004; 66:122-7. [PMID: 15253762 DOI: 10.1111/j.1399-0004.2004.00288.x] [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] [Indexed: 02/05/2023]
Abstract
Mental retardation (MR) is the most common developmental disability, affecting approximately 2% of the population. The causes of MR are diverse and poorly understood, but chromosomal rearrangements account for 4-28% of cases, and duplications/deletions smaller than 5 Mb are known to cause syndromic MR. We have previously developed a strategy based on automated fluorescent microsatellite genotyping to test for telomere integrity. This strategy detected about 10% of cryptic subtelomeric rearrangements in patients with idiopathic syndromic MR. Because telomere screening is a first step toward the goal of analyzing the entire genome for chromosomal rearrangements in MR, we have extended our strategy to 400 markers evenly distributed along the chromosomes to detect interstitial anomalies. Among 97 individuals tested, three anomalies were found: two deletions (one in three siblings) and one parental disomy. These results emphasize the value of a genome-wide microsatellite scan for the detection of interstitial aberrations and demonstrate that automated genotyping is a sensitive method that not only detects small interstitial rearrangements and their parental origin but also provides a unique opportunity to detect uniparental disomies. This study will hopefully contribute to the delineation of new contiguous gene syndromes and the identification of new imprinted regions.
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Chemaitilly W, Goldenberg A, Baujat G, Thibaud E, Cormier-Daire V, Abadie V. Adrenal insufficiency and abnormal genitalia in a 46XX female with Smith-Lemli-Opitz syndrome. Horm Res Paediatr 2003; 59:254-6. [PMID: 12714790 DOI: 10.1159/000070226] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2002] [Accepted: 02/11/2003] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To report the first case of a 46XX female infant with Smith-Lemli-Opitz syndrome (SLOS), adrenal insufficiency and abnormal genitalia. METHODS The patient was assessed for hormonal status on day 4 and 6 months later and was followed-up from the study time (2.5 years of age). RESULTS The patient had a persistent urogenital sinus, posterior labial fusion without clitoromegaly. She presented with a salt-wasting syndrome on day 4. Adrenal insufficiency was confirmed. Adrenal androgen levels, including 17-hydroxyprogesterone and 11-deoxycortisol were moderately elevated. CONCLUSION Children with SLOS should be assessed for adrenal insufficiency. In female infants, abnormal external genitalia can be observed even if the precise mechanism behind these abnormalities is yet to be determined.
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59
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Burglen L, Héron D, Moerman A, Dieux-Coeslier A, Bourguignon JP, Bachy A, Carel JC, Cormier-Daire V, Manouvrier S, Verloes A. Myhre syndrome: new reports, review, and differential diagnosis. J Med Genet 2003; 40:546-51. [PMID: 12843331 PMCID: PMC1735530 DOI: 10.1136/jmg.40.7.546] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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60
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Rio M, Clech L, Amiel J, Faivre L, Lyonnet S, Le Merrer M, Odent S, Lacombe D, Edery P, Brauner R, Raoul O, Gosset P, Prieur M, Vekemans M, Munnich A, Colleaux L, Cormier-Daire V. Spectrum of NSD1 mutations in Sotos and Weaver syndromes. J Med Genet 2003; 40:436-40. [PMID: 12807965 PMCID: PMC1735492 DOI: 10.1136/jmg.40.6.436] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Sotos syndrome is an overgrowth syndrome characterised by pre- and postnatal overgrowth, macrocephaly, advanced bone age, and typical facial features. Weaver syndrome is a closely related condition characterised by a distinctive craniofacial appearance, advanced carpal maturation, widened distal long bones, and camptodactyly. Haploinsufficiency of the NSD1 gene has recently been reported as the major cause of Sotos syndrome while point mutations accounted for a minority of cases. We looked for NSD1 deletions or mutations in 39 patients with childhood overgrowth. The series included typical Sotos patients (23/39), Sotos-like patients (lacking one major criteria, 10/39), and Weaver patients (6/39). We identified NSD1 deletions (6/33) and intragenic mutations (16/33) in Sotos syndrome patients. We also identified NSD1 intragenic mutations in 3/6 Weaver patients. We conclude therefore that NSD1 mutations account for most cases of Sotos syndrome and a significant number of Weaver syndrome cases in our series. Interestingly, mental retardation was consistently more severe in patients with NSD1 deletions. Macrocephaly and facial gestalt but not overgrowth and advanced bone age were consistently observed in Sotos syndrome patients. We suggest therefore considering macrocephaly and facial gestalt as mandatory criteria for the diagnosis of Sotos syndrome and overgrowth and advanced bone age as minor criteria.
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61
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Faivre L, Le Merrer M, Al-Gazali LI, Ausems MGEM, Bitoun P, Bacq D, Maroteaux P, Munnich A, Cormier-Daire V. Homozygosity mapping of a Desbuquois dysplasia locus to chromosome 17q25.3. J Med Genet 2003; 40:282-4. [PMID: 12676900 PMCID: PMC1735409 DOI: 10.1136/jmg.40.4.282] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Desbuquois dysplasia is a rare autosomal recessive chondrodysplasia characterised by short stature, joint laxity, facial dysmorphism, a "Swedish key" appearance of the proximal femur, advanced carpal and tarsal bone age, and hand anomalies consisting of phalangeal dislocations and an extra ossification centre distal to the second metacarpal. However, the latter changes are not consistently observed in all Desbuquois patients, defining two distinct groups, based on the presence or absence of hand anomalies. We have performed a genome wide search in four inbred Desbuquois families with typical hand anomalies originating from France, Sri-Lanka, the United Arab Emirates, and Morocco. Here, we report on the mapping of a disease gene to chromosome 17q25.3 (Zmax=4.61 at theta=0 at locus D17S1806) in the 9.5 cM interval defined by loci D17S802 and D17S1822. The present study supports the genetic homogeneity of the clinical subtype with hand anomalies and will hopefully help in identifying the Desbuquois dysplasia gene.
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Cormier-Daire V, Molinari F, Rio M, Raoul O, de Blois MC, Romana S, Vekemans M, Munnich A, Colleaux L. Cryptic terminal deletion of chromosome 9q34: a novel cause of syndromic obesity in childhood? J Med Genet 2003; 40:300-3. [PMID: 12676904 PMCID: PMC1735435 DOI: 10.1136/jmg.40.4.300] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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63
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Cormier-Daire V, Delezoide AL, Philip N, Marcorelles P, Casas K, Hillion Y, Faivre L, Rimoin DL, Munnich A, Maroteaux P, Le Merrer M. Clinical, radiological, and chondro-osseous findings in opsismodysplasia: survey of a series of 12 unreported cases. J Med Genet 2003; 40:195-200. [PMID: 12624139 PMCID: PMC1735387 DOI: 10.1136/jmg.40.3.195] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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64
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Chol M, Lebon S, Bénit P, Chretien D, de Lonlay P, Goldenberg A, Odent S, Hertz-Pannier L, Vincent-Delorme C, Cormier-Daire V, Rustin P, Rötig A, Munnich A. The mitochondrial DNA G13513A MELAS mutation in the NADH dehydrogenase 5 gene is a frequent cause of Leigh-like syndrome with isolated complex I deficiency. J Med Genet 2003; 40:188-91. [PMID: 12624137 PMCID: PMC1735406 DOI: 10.1136/jmg.40.3.188] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Leigh syndrome is a subacute necrotising encephalomyopathy frequently ascribed to mitochondrial respiratory chain deficiency. This condition is genetically heterogeneous, as mutations in both mitochondrial (mt) and nuclear genes have been reported. Here, we report the G13513A transition in the ND5 mtDNA gene in three unrelated children with complex I deficiency and a peculiar MRI aspect distinct from typical Leigh syndrome. Brain MRI consistently showed a specific involvement of the substantia nigra and medulla oblongata sparing the basal ganglia. Variable degrees of heteroplasmy were found in all tissues tested and a high percentage of mutant mtDNA was observed in muscle. The asymptomatic mothers presented low levels of mutant mtDNA in blood leucocytes. This mutation, which affects an evolutionary conserved amino acid (D393N), has been previously reported in adult patients with MELAS or LHON/MELAS syndromes, emphasising the clinical heterogeneity of mitochondrial DNA mutations. Since the G13513A mutation was found in 21% of our patients with Leigh syndrome and complex I deficiency (3/14), it appears that this mutation represents a frequent cause of Leigh-like syndrome, which should be systematically tested for molecular diagnosis in affected children and for genetic counselling in their maternal relatives.
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65
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Miossec-Chauvet E, Mikaeloff Y, Heron D, Merzoug V, Cormier-Daire V, de Lonlay P, Matthijs G, Van Hulle C, Ponsot G, Seta N. Neurological presentation in pediatric patients with congenital disorders of glycosylation type Ia. Neuropediatrics 2003; 34:1-6. [PMID: 12690561 DOI: 10.1055/s-2003-38614] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Congenital disorders of glycosylation (CDG), formerly called carbohydrate-deficient glycoprotein syndromes, constitute a newly identified group of multisystem disorders characterized by defective glycosylation of N-glycosylated proteins. The objective of this work was to describe precisely neurological findings in patients with type Ia CDG (CDG-Ia) and to compare our results with the literature. STUDY DESIGN We retrospectively reviewed neurological and neurodevelopmental, neuroimaging, and genetic features in ten patients with CDG-Ia who mainly presented with neurological abnormalities during childhood and therefore were referred to a neuropediatrician or a neurogeneticist. RESULTS Neurological manifestations had a static clinical course, dominated by mental retardation and cerebellar dysfunction, and acute episodes: stroke-like episodes and seizures. However, microcephaly, retinopathy, and polyneuropathy were progressive. All patients had severe global neurodevelopmental delay: only one was able to walk alone at ten years of age and only one could read. Marked heterogeneity in manifestations and delay of diagnosis was noted across the patients. Cerebellar hypoplasia was found by magnetic resonance imaging in all ten patients and olivopontocerebellar hypoplasia in four patients. As in the literature, there was no clear phenotype-mutation correlation. CONCLUSION Our findings confirm the importance of a precise and complete description of the neurological and neuroradiological phenotype delineating the phenotype of CDG-Ia to increase the likelihood of diagnosing the disease.
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Genevieve D, Cormier-Daire V, Sanlaville D, Faivre L, Gosset P, Allart L, Picq M, Munnich A, Romana S, de Blois M, Vekemans M. Mild phenotype in a 15-year-old boy with Pallister-Killian syndrome. Am J Med Genet A 2003; 116A:90-3. [PMID: 12476459 DOI: 10.1002/ajmg.a.10877] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Pallister-Killian syndrome is a rare disorder characterized by multiple congenital anomalies, coarse face, pigmentary skin changes, seizures, severe mental retardation, and the presence of an extra metacentric chromosome i(12p) confined to skin fibroblasts only. Here, we report on an unusual case of i(12p) in a 15-year-old boy presenting with mild mental retardation, minor facial features (long face, prognathism, short neck), normal weight, length, and OFC parameters as well as hyperpigmented streaks. The boy attended normal school until the age of 14 years. Because of hyperpigmented stripes, chromosome analysis was performed on skin fibroblasts. This study showed that 37% of the cells had an additional isochromosome for the short arm of chromosome 12. This observation illustrates the phenotypic variability of i(12p) and emphasizes the importance of skin fibroblasts chromosome analysis in patients with pigmentary skin changes.
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67
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Faivre L, Gorlin RJ, Wirtz MK, Godfrey M, Dagoneau N, Samples JR, Le Merrer M, Collod-Beroud G, Boileau C, Munnich A, Cormier-Daire V. In frame fibrillin-1 gene deletion in autosomal dominant Weill-Marchesani syndrome. J Med Genet 2003; 40:34-6. [PMID: 12525539 PMCID: PMC1735272 DOI: 10.1136/jmg.40.1.34] [Citation(s) in RCA: 223] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Weill-Marchesani syndrome (WMS) is a connective tissue disorder characterised by short stature, brachydactyly, joint stiffness, and characteristic eye anomalies including microspherophakia, ectopia of the lenses, severe myopia, and glaucoma. Both autosomal recessive (AR) and autosomal dominant (AD) modes of inheritance have been described and a gene for AR WMS has recently been mapped to chromosome 19p13.3-p13.2. Here, we report on the exclusion of chromosome 19p13.3-p13.2 in a large AD WMS family and show that, despite clinical homogeneity, AD and AR WMS are genetically heterogeneous entities. Because two AD WMS families were consistent with linkage to chromosome 15q21.1, the fibrillin-1 gene was sequenced and a 24 nt in frame deletion within a latent transforming growth factor-beta1 binding protein (LTBP) motif of the fibrillin-1 gene was found in a AD WMS family (exon 41, 5074_5097del). This in frame deletion cosegregated with the disease and was not found in 186 controls. This study strongly suggests that AD WMS and Marfan syndrome are allelic conditions at the fibrillin-1 locus and adds to the remarkable clinical heterogeneity of type I fibrillinopathies.
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Goldenberg A, Chevy F, Bernard C, Wolf C, Cormier-Daire V. [Clinical characteristics and diagnosis of Smith-Lemli-Opitz syndrome and tentative phenotype-genotype correlation: report of 45 cases]. Arch Pediatr 2003; 10:4-10. [PMID: 12818773 DOI: 10.1016/s0929-693x(03)00214-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION SLO (Smith-Lemli-Opitz) syndrome is an autosomal recessive multiple congenital malformations syndrome, including mental retardation, failure to thrive, craniofacial abnormalities, incomplete development of male genitalia, limb anomalies and various internal organ abnormalities. This syndrome is caused by a deficiency of cholesterol biosynthesis at the distal step of 7-dehydrocholesterol reductase (7DHCR). PATIENTS AND METHODS We have reviewed 45 cases of SLO syndrome and showed the large clinical spectrum of this syndrome. RESULTS The prenatal diagnosis should be considered when dealing with antenatal growth retardation and visceral malformations. At birth, a normal weight does not systematically exclude the diagnosis. Diagnosis was more difficult for older children especially for girls and should be suspected on the association of mental retardation, autism, short stature and microcephaly. We found a correlation between low plasmatic cholesterol measurement and clinical severity. Phenotype-genotype correlation was difficult to establish. However, homozygosity for IVS8-1G > C splice site mutation was associated with severe phenotype. CONCLUSION Better understanding of the 7DHCR gene regulation factors and of the compensatory mechanism of foeto-maternal cholesterol transfer are necessary to explain the wide clinical spectrum of the SLO syndrome.
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Faivre L, Le Merrer M, Lyonnet S, Plauchu H, Dagoneau N, Campos-Xavier AB, Attia-Sobol J, Verloes A, Munnich A, Cormier-Daire V. Clinical and genetic heterogeneity of Seckel syndrome. AMERICAN JOURNAL OF MEDICAL GENETICS 2002; 112:379-83. [PMID: 12376940 DOI: 10.1002/ajmg.10677] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Seckel syndrome is a rare autosomal recessive condition belonging to the group of osteodysplastic primordial "dwarfism" and characterized by the association of 1) severe pre- and postnatal growth retardation, 2) microcephaly with mental retardation, and 3) specific dysmorphic features. Recently, two disease loci have been mapped to chromosomes 3q22.1-q24 and 18p11.31-q11.2, respectively, by homozygosity mapping in consanguineous families. Here, we report on the exclusion of these loci in five consanguineous and one multiplex nonconsanguineous Seckel syndrome families and in two consanguineous families presenting type II osteodysplastic primordial dwarfism. These results support the view that Seckel syndrome is a clinically and genetically heterogeneous condition.
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Thauvin-Robinet C, El Ghouzzi V, Chemaitilly W, Dagoneau N, Boute O, Viot G, Mégarbané A, Sefiani A, Munnich A, Le Merrer M, Cormier-Daire V. Homozygosity mapping of a Dyggve-Melchior-Clausen syndrome gene to chromosome 18q21.1. J Med Genet 2002; 39:714-7. [PMID: 12362026 PMCID: PMC1734996 DOI: 10.1136/jmg.39.10.714] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Dyggve-Melchior-Clausen syndrome (DMC) is an autosomal recessive condition characterised by short trunk dwarfism, scoliosis, microcephaly, coarse facies, mental retardation, and characteristic radiological features. X rays show platyspondyly with double vertebral hump, epiphyseal dysplasia, irregular metaphyses, and a characteristic lacy appearance of the iliac crests. Electron microscopy of chondrocytes have shown widened cisternae of rough endoplasmic reticulum and biochemical analyses have shown accumulation of glucosaminoglycan in cartilage, but the pathogenesis of DMC remains unexplained. Here, we report on the homozygosity mapping of a DMC gene to chromosome 18q21.1 in seven inbred families (Zmax=9.65 at theta=0 at locus D18S1126) in the genetic interval (1.8 cM) defined by loci D18S455 and D18S363. Despite the various geographical origins of the families reported here (Morocco, Tunisia, Portugal, and Lebanon), this condition was genetically homogeneous in our series. Continuing studies will hopefully lead to the identification of the disease causing gene.
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Faivre L, Cormier-Daire V, Lapierre JM, Colleaux L, Jacquemont S, Geneviéve D, Saunier P, Munnich A, Turleau C, Romana S, Prieur M, De Blois MC, Vekemans M. Deletion of the SIM1 gene (6q16.2) in a patient with a Prader-Willi-like phenotype. J Med Genet 2002; 39:594-6. [PMID: 12161602 PMCID: PMC1735217 DOI: 10.1136/jmg.39.8.594] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Cormier-Daire V, Huber C, Munnich A. Allelic and nonallelic heterogeneity in dyschondrosteosis (Leri-Weill syndrome). AMERICAN JOURNAL OF MEDICAL GENETICS 2002; 106:272-4. [PMID: 11891678 DOI: 10.1002/ajmg.10228] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dyschondrosteosis (DCS) is an autosomal dominant form of mesomelic dysplasia that has been recently ascribed to large-scale deletions and nonsense mutations of the SHOX gene on the pseudoautosomal region of chromosome X and Y [Belin et al., 1998: Nat Genet 19:67-69; Shears et al., 1998: Nat Genet 19:70-73]. Here, we report the molecular analysis of a total of 23 DCS families including 16 previously reported pedigrees [Belin et al., 1998: Nat Genet 19:67-69; Huber et al., 2001: J Med Genet 38:281-284] and 7 novel DCS families. Linkage analyses in 21 of 23 families were consistent with linkage to the pseudoautosomal region. However, in 2 of 23 families, linkage studies excluded SHOX as the disease-causing gene, suggesting that this condition is genetically heterogeneous.
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Holder-Espinasse M, Marie S, Bourrouillou G, Ceballos-Picot I, Nassogne MC, Faivre L, Amiel J, Munnich A, Vincent MF, Cormier-Daire V. Towards a suggestive facial dysmorphism in adenylosuccinate lyase deficiency? J Med Genet 2002; 39:440-2. [PMID: 12070256 PMCID: PMC1735137 DOI: 10.1136/jmg.39.6.440] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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74
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Rio M, Molinari F, Heuertz S, Ozilou C, Gosset P, Raoul O, Cormier-Daire V, Amiel J, Lyonnet S, Le Merrer M, Turleau C, de Blois MC, Prieur M, Romana S, Vekemans M, Munnich A, Colleaux L. Automated fluorescent genotyping detects 10% of cryptic subtelomeric rearrangements in idiopathic syndromic mental retardation. J Med Genet 2002; 39:266-70. [PMID: 11950856 PMCID: PMC1735076 DOI: 10.1136/jmg.39.4.266] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Recent studies have shown that cryptic unbalanced subtelomeric rearrangements contribute to a significant proportion of idiopathic syndromic mental retardation cases. Using a fluorescent genotyping based strategy, we found a 10% rate of cryptic subtelomeric rearrangements in a large series of 150 probands with severe idiopathic syndromic mental retardation and normal RHG-GTG banded karyotype. Fourteen children were found to carry deletions or duplications of one or more chromosome telomeres and two children had uniparental disomy. This study clearly shows that fluorescent genotyping is a sensitive and cost effective method that not only detects cryptic subtelomeric rearrangements but also provides a unique opportunity to detect uniparental disomies. We suggest giving consideration to systematic examination of subtelomeric regions in the diagnostic work up of patients with unexplained syndromic mental retardation.
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Faivre L, Amiel J, Ouachée-Chardin M, Geneviève D, Munnich A, Cormier-Daire V, Monceaux F, Teillac D. Septo-optic dysplasia and digital anomalies: another observation. AMERICAN JOURNAL OF MEDICAL GENETICS 2002; 108:247-8. [PMID: 11891695 DOI: 10.1002/ajmg.10267] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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