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An update on the genetics of ocular coloboma. Hum Genet 2019; 138:865-880. [PMID: 31073883 DOI: 10.1007/s00439-019-02019-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 04/19/2019] [Indexed: 01/04/2023]
Abstract
Ocular coloboma is an uncommon, but often severe, sight-threatening condition that can be identified from birth. This congenital anomaly is thought to be caused by maldevelopment of optic fissure closure during early eye morphogenesis. It has been causally linked to both inherited (genetic) and environmental influences. In particular, as a consequence of work to identify genetic causes of coloboma, new molecular pathways that control optic fissure closure have now been identified. Many more regulatory mechanisms still await better understanding to inform on the development of potential therapies for patients with this malformation. This review provides an update of known coloboma genes, the pathways they influence and how best to manage the condition. In the age of precision medicine, determining the underlying genetic cause in any given patient is of high importance.
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Brajadenta GS, Utari A, Patri S, Bilan F, Faradz SMH, Kitzis A, Thoreau V. Identification of a Novel CHD7 Mutation in a CHARGE Syndrome Patient in Indonesia. Ann Lab Med 2019; 39:503-506. [PMID: 31037873 PMCID: PMC6502942 DOI: 10.3343/alm.2019.39.5.503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 01/28/2019] [Accepted: 03/29/2019] [Indexed: 11/19/2022] Open
Affiliation(s)
- Gara Samara Brajadenta
- Department of Medical Biology, Division of Human Genetics, Faculty of Medicine, Swadaya Gunung Jati University, Cirebon, Indonesia.,EA3808 Neurovascular Unit and Cognitive Impairments, University of Poitiers, Poitiers, France.
| | - Agustini Utari
- Center for Biomedical Research (CEBIOR), Faculty of Medicine, Diponegoro University, Semarang, Indonesia.,Department of Pediatrics, Faculty of Medicine, Diponegoro University/Diponegoro National Hospital, Semarang, Indonesia
| | - Sylvie Patri
- EA3808 Neurovascular Unit and Cognitive Impairments, University of Poitiers, Poitiers, France.,Department of Genetics, Poitiers University Hospital, Poitiers, France
| | - Frédéric Bilan
- EA3808 Neurovascular Unit and Cognitive Impairments, University of Poitiers, Poitiers, France.,Department of Genetics, Poitiers University Hospital, Poitiers, France
| | | | - Alain Kitzis
- EA3808 Neurovascular Unit and Cognitive Impairments, University of Poitiers, Poitiers, France
| | - Vincent Thoreau
- EA3808 Neurovascular Unit and Cognitive Impairments, University of Poitiers, Poitiers, France
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Millischer AE, Sonigo P, Attie T, Spaggiari E, O'Gorman N, Bessieres B, Kermorvant E, Boddaert N, Salomon LJ, Grevent D. Fetal MRI findings in a retrospective cohort of 26 cases of prenatally diagnosed CHARGE syndrome individuals. Prenat Diagn 2019; 39:781-791. [PMID: 30715739 DOI: 10.1002/pd.5429] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/20/2019] [Accepted: 01/22/2019] [Indexed: 12/16/2022]
Abstract
"CHARGE syndrome" (CS) is a multifaceted syndrome associated with a poor prognosis. The prenatal diagnosis remains challenging especially as the fetal anomalies that may evoke suspicion of CS are not comprehensively described. OBJECTIVE This study aims to identify the anomalies in MRI with suspected CHARGE syndrome and to propose a possible standardization in the image-based prenatal diagnosis of CS. METHODS This was a retrospective study of 26 fetuses who underwent MRI and had a confirmed diagnosis of CS, as proven by histopathological and/or neonatal examinations and/or the presence of the CHD7 gene mutation. RESULTS The three most frequent MRI anomalies confirmed at histopathological and/or neonatal examinations were arhinencephaly in 100% (26 of 26), dysplasia of the semicircular canals agenesis (SCA) in 100% (24 of 24), and posterior fossa anomalies in 100% (22 of 22). Our study also revealed short petrous bones with a particular triangular shape in 24 of 24 cases of SCA. Other relevant findings included external ear anomalies in 36% (9 of 25), cleft lip and palate (9 of 9), ventriculomegaly (VMG) (6 of 6), short corpus callosum (3 of 3), and ocular asymmetry in 36.6% (4 of 11). CONCLUSION Our study emphasizes the interest of fetal MRI in the diagnosis of CS with an adapted knowledge of semiology.
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Affiliation(s)
- Anne-Elodie Millischer
- Service de Radiologie, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France.,EA fetus, Necker Hospital, Paris, France
| | - Pascale Sonigo
- Service de Radiologie, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
| | - Tania Attie
- Service de Génétique, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
| | - Emmanuel Spaggiari
- Service de Gynécologie-Obstétrique, Hôpital Necker-Enfants Malades, Assistance Publique - Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - Neil O'Gorman
- Service de Gynécologie-Obstétrique, Hôpital Necker-Enfants Malades, Assistance Publique - Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - Bettina Bessieres
- Service d'anatomopathologie, Hôpital Necker-Enfants Malades, Assistance Publique - Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - Elsa Kermorvant
- Service de néonatologie, Hôpital Necker-Enfants Malades, Assistance Publique - Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - Nathalie Boddaert
- Service de Radiologie, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
| | - Laurent-Julien Salomon
- EA fetus, Necker Hospital, Paris, France.,Service de Gynécologie-Obstétrique, Hôpital Necker-Enfants Malades, Assistance Publique - Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France
| | - David Grevent
- Service de Radiologie, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
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Gonçalves CI, Patriarca FM, Aragüés JM, Carvalho D, Fonseca F, Martins S, Marques O, Pereira BD, Martinez-de-Oliveira J, Lemos MC. High frequency of CHD7 mutations in congenital hypogonadotropic hypogonadism. Sci Rep 2019; 9:1597. [PMID: 30733481 PMCID: PMC6367338 DOI: 10.1038/s41598-018-38178-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 12/17/2018] [Indexed: 01/24/2023] Open
Abstract
Congenital hypogonadotropic hypogonadism (CHH) is characterized by lack of normal pubertal development due to deficient gonadotropin-releasing hormone (GnRH) secretion or action, and is caused by genetic defects in several genes. Mutations in the CHD7 gene cause CHARGE syndrome (Coloboma of the eye, Heart defects, Atresia of the choanae, Retardation of growth and development, Genital hypoplasia and Ear abnormalities), but have also been found in patients with isolated CHH. The aim of this study was to identify CHD7 mutations in patients with CHH. Fifty Portuguese patients with CHH were screened for mutations in the CHD7 gene by DNA sequencing. Eight (16%) patients had CHD7 rare sequence variants that consisted of six missense (p.Gly388Glu, p.His903Pro, p.Thr1082Ile, p.Val1452Leu, p.Asp1854Gly, and p.Arg2065His) and two synonymous (p.Ser559Ser, and p.Ala2785Ala) mutations. Five of these mutations have never been reported before. Three CHD7 mutations occurred in patients that had mutations in additional CHH-genes. This study uncovered novel genetic variants that expand the known spectrum of mutations associated with CHH. The frequency of CHD7 mutations in this cohort was higher than that of other major CHH-genes and confirms the importance of including CHD7 in the genetic testing of CHH, even in the absence of additional CHARGE features.
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Affiliation(s)
- Catarina Inês Gonçalves
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, 6200-506, Covilhã, Portugal
| | - Filipa Marina Patriarca
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, 6200-506, Covilhã, Portugal
| | - José Maria Aragüés
- Serviço de Endocrinologia, Diabetes e Metabolismo, Hospital de Santa Maria, 1649-035, Lisboa, Portugal
| | - Davide Carvalho
- Serviço de Endocrinologia, Diabetes e Metabolismo, Centro Hospitalar de São João and Faculty of Medicine and Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-319, Porto, Portugal
| | - Fernando Fonseca
- Serviço de Endocrinologia, Diabetes e Metabolismo, Hospital de Curry Cabral, 1069-166, Lisboa, Portugal
| | - Sofia Martins
- Unidade de Endocrinologia Pediátrica, Serviço de Pediatria, Hospital de Braga, 4710-243, Braga, Portugal
| | - Olinda Marques
- Serviço de Endocrinologia, Hospital de Braga, 4710-243, Braga, Portugal
| | - Bernardo Dias Pereira
- Serviço de Endocrinologia e Diabetes, Hospital Garcia de Orta, 2805-267, Almada, Portugal
| | - José Martinez-de-Oliveira
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, 6200-506, Covilhã, Portugal
| | - Manuel Carlos Lemos
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, 6200-506, Covilhã, Portugal.
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Massoud M, Guibaud L. Prenatal imaging of posterior fossa disorders. A review. Eur J Paediatr Neurol 2018; 22:972-988. [PMID: 30143392 DOI: 10.1016/j.ejpn.2018.07.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/18/2018] [Accepted: 07/19/2018] [Indexed: 12/23/2022]
Abstract
With advances in fetal imaging, prenatal diagnosis of posterior fossa anomalies has been greatly improved. Based on the anatomical approach proposed by Guibaud and Desportes in 2006, the main anomalies depicted according to the algorithm includes: (1) increased "fluid-filled" space of the posterior fossa, (2) abnormal biometry of the cerebellum, and (3) abnormal cerebellar anatomy. In this review, the spectrum of PF anomalies is covered in an attempt to update this approach in the light of both our experience, more than a decade since this algorithm was published, and the latest data in the literature.
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Affiliation(s)
- Mona Massoud
- Fetal Medicine Unit, Université Claude Bernard Lyon 1, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, 59 Boulevard Pinel, Bron, 69500, Lyon, France
| | - Laurent Guibaud
- Fetal Medicine Unit, Université Claude Bernard Lyon 1, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, 59 Boulevard Pinel, Bron, 69500, Lyon, France; Department of Pediatric and Fetal Imaging, Centre de Compétence des Malformations et Maladies congénitales du cervelet, Université Claude Bernard Lyon 1, Hôpital Femme Mère Enfant, 59 Boulevard Pinel, Bron, 69500, Lyon, France.
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Ufartes R, Schwenty-Lara J, Freese L, Neuhofer C, Möller J, Wehner P, van Ravenswaaij-Arts CMA, Wong MTY, Schanze I, Tzschach A, Bartsch O, Borchers A, Pauli S. Sema3a plays a role in the pathogenesis of CHARGE syndrome. Hum Mol Genet 2018; 27:1343-1352. [DOI: 10.1093/hmg/ddy045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 02/02/2018] [Indexed: 12/28/2022] Open
Affiliation(s)
- Roser Ufartes
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
| | - Janina Schwenty-Lara
- Department of Biology, Molecular Embryology, Philipps-Universität Marburg, 35043 Marburg, Germany
| | - Luisa Freese
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
| | - Christiane Neuhofer
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
| | - Janika Möller
- Department of Biology, Molecular Embryology, Philipps-Universität Marburg, 35043 Marburg, Germany
| | - Peter Wehner
- Department of Developmental Biochemistry, Georg August University Göttingen, 37077 Göttingen, Germany
| | - Conny M A van Ravenswaaij-Arts
- Department of Genetics, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands
| | - Monica T Y Wong
- Department of Genetics, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands
| | - Ina Schanze
- Institute of Human Genetics, University Medical Center Magdeburg, 39120 Magdeburg, Germany
| | - Andreas Tzschach
- TU Dresden, Faculty of Medicine Carl Gustav Carus, Institute for Clinical Genetics, 01307 Dresden, Germany
| | - Oliver Bartsch
- Institute of Human Genetics, Johannes Gutenberg University Mainz, University Medical Centre, 55131 Mainz, Germany
| | - Annette Borchers
- Department of Biology, Molecular Embryology, Philipps-Universität Marburg, 35043 Marburg, Germany
| | - Silke Pauli
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
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