1
|
Chacon-Camacho OF, Barragán-Arévalo T, Villarroel CE, Almanza-Monterrubio M, Zenteno JC. Previously undescribed phenotypic findings and novel ACTG1 gene pathogenic variants in Baraitser-Winter cerebrofrontofacial syndrome. Eur J Med Genet 2020; 63:103877. [PMID: 32028042 DOI: 10.1016/j.ejmg.2020.103877] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 11/11/2019] [Accepted: 02/01/2020] [Indexed: 10/25/2022]
Abstract
Baraitser-Winter cerebrofrontofacial syndrome is an autosomal dominant disease characterized by multiple congenital abnormalities and intellectual disability, which is caused by mutations in either the ACTB or ACTG1 genes. In this report, we described novel phenotypic findings in two Mexican patients with the disorder in whom two novel ACTG1 mutations (c.176A > G, p.Gln59Arg; and c.608C > T, p.Thr203Met) were identified.
Collapse
Affiliation(s)
- Oscar F Chacon-Camacho
- Department of Genetics, Institute of Ophthalmology "Conde de Valenciana", Mexico City, Mexico; Carrera de Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, Mexico
| | | | - Camilo E Villarroel
- Department of Human Genetics, National Institute of Pediatrics, Mexico City, Mexico
| | - Mónica Almanza-Monterrubio
- Department of Human Genetics, National Institute of Pediatrics, Mexico City, Mexico; Department of Strabismus, Institute of Ophthalmology "Conde de Valenciana", Mexico City, Mexico
| | - Juan Carlos Zenteno
- Department of Genetics, Institute of Ophthalmology "Conde de Valenciana", Mexico City, Mexico; Department of Biochemistry, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico.
| |
Collapse
|
2
|
Our experience on Bentall procedure in an adult patient with Baraitser-Winter syndrome. TURK GOGUS KALP DAMAR CERRAHISI DERGISI-TURKISH JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2018; 26:639-641. [PMID: 32082808 DOI: 10.5606/tgkdc.dergisi.2018.15758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 06/27/2018] [Indexed: 11/21/2022]
Abstract
Baraitser-Winter syndrome is a very rare genetic disorder caused by cytoplasmic actin-encoding genes defects. Although most patients have similar phenotype, concomitant cardiac anomalies widely vary. In addition to well-described congenital heart diseases, aortic aneurysms occur due to underlying actin gene mutation in these patients in the further years. Herein, we present a 26-year-old male case who underwent Bentall procedure with the diagnosis of new-onset aortic valve regurgitation and an ascending aorta aneurysm.
Collapse
|
3
|
Tan AP, Chong WK, Mankad K. Comprehensive genotype-phenotype correlation in lissencephaly. Quant Imaging Med Surg 2018; 8:673-693. [PMID: 30211035 DOI: 10.21037/qims.2018.08.08] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Malformations of cortical development (MCD) are a heterogenous group of disorders with diverse genotypic and phenotypic variations. Lissencephaly is a subtype of MCD caused by defect in neuronal migration, which occurs between 12 and 24 weeks of gestation. The continuous advancement in the field of molecular genetics in the last decade has led to identification of at least 19 lissencephaly-related genes, most of which are related to microtubule structural proteins (tubulin) or microtubule-associated proteins (MAPs). The aim of this review article is to bring together current knowledge of gene mutations associated with lissencephaly and to provide a comprehensive genotype-phenotype correlation. Illustrative cases will be presented to facilitate the understanding of the described genotype-phenotype correlation.
Collapse
Affiliation(s)
- Ai Peng Tan
- Department of Diagnostic Imaging, National University Health System, Singapore.,Yong Loo Lin School of Medicine, National University of Singapore (NUS), Singapore
| | - Wui Khean Chong
- Department of Neuroradiology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Kshitij Mankad
- Department of Neuroradiology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| |
Collapse
|
4
|
Climans SA, Mirsattari SM. Generalized epilepsy in Baraitser-Winter cerebrofrontofacial syndrome. EPILEPSY & BEHAVIOR CASE REPORTS 2017; 7:58-60. [PMID: 28413780 PMCID: PMC5385583 DOI: 10.1016/j.ebcr.2017.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 03/10/2017] [Accepted: 03/11/2017] [Indexed: 11/28/2022]
Abstract
Baraitser–Winter cerebrofrontofacial syndrome (BWMS) is caused by actin gene mutations. Key features of BWMS are ptosis, hypertelorism, iris colobomata, and mental retardation. Generalized epilepsy is seen in half of those with BWMS. Seizures in BWMS can be absence, myoclonic, tonic, or tonic–clonic.
Collapse
Affiliation(s)
- Seth Andrew Climans
- Department of Clinical Neurological Sciences, The University of Western Ontario, London, Canada
| | - Seyed M Mirsattari
- Department of Clinical Neurological Sciences, The University of Western Ontario, London, Canada.,Department of Medical Imaging, The University of Western Ontario, London, Canada.,Department of Medical Biophysics, The University of Western Ontario, London, Canada.,Department of Psychology, The University of Western Ontario, London, Canada
| |
Collapse
|
5
|
Baraitser–Winter syndrome: An additional Egyptian patient with skeletal anomalies, bilateral iris and choroid colobomas, retinal hypoplasia and hypoplastic scrotum. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2016. [DOI: 10.1016/j.ejmhg.2015.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
6
|
Drury S, Williams H, Trump N, Boustred C, Lench N, Scott RH, Chitty LS. Exome sequencing for prenatal diagnosis of fetuses with sonographic abnormalities. Prenat Diagn 2015; 35:1010-7. [DOI: 10.1002/pd.4675] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 07/21/2015] [Accepted: 08/08/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Suzanne Drury
- North-East Thames Regional Genetics Service; Great Ormond Street Hospital for Children NHS Foundation Trust; London UK
| | - Hywel Williams
- Genetics and Genomic Medicine; UCL Institute of Child Health; London UK
| | - Natalie Trump
- North-East Thames Regional Genetics Service; Great Ormond Street Hospital for Children NHS Foundation Trust; London UK
| | - Christopher Boustred
- North-East Thames Regional Genetics Service; Great Ormond Street Hospital for Children NHS Foundation Trust; London UK
| | - Nicholas Lench
- North-East Thames Regional Genetics Service; Great Ormond Street Hospital for Children NHS Foundation Trust; London UK
| | - Richard H. Scott
- North-East Thames Regional Genetics Service; Great Ormond Street Hospital for Children NHS Foundation Trust; London UK
| | - Lyn S. Chitty
- North-East Thames Regional Genetics Service; Great Ormond Street Hospital for Children NHS Foundation Trust; London UK
- Genetics and Genomic Medicine; UCL Institute of Child Health; London UK
| | | |
Collapse
|
7
|
Abstract
Baraitser-Winter syndrome (BWS), first reported in 1988, is apparently due to genetic abnormalities that are still not well-defined, although many gene abnormalities are already discovered and de novo missense changes in the cytoplasmic actin-encoding genes (called ACTB and ACTG1) have been recently discovered. The syndrome combines facial and cerebral malformations. Facial malformations totally or partially present in the same patient are: Iris coloboma, bilateral ptosis, hypertelorism, broad nasal bridge, and prominent epicanthic folds. The various brain malformations are probably responsible for growth and mental retardation. To the best of our knowledge, the syndrome is very rare as few cases have been reported so far. Our aim was to describe a child with a phenotype that looks like BWS with proved partial growth hormone (GH) deficiency which was not reported before. A girl aged 7-year-old of consanguineous parents was referred for short stature and mental retardation. Clinical examination showed dwarfism and a delay in her mental development. Other clinical features included: Strabismus, epicanthic folds, broad nasal bridge, and brain anomalies such as lissencephaly, bilateral hygroma, and cerebral atrophy. Hormonal assessment showed partial GH deficiency without other endocrine disorders. Our case looks exactly like BWS. However, apart from facial and cerebral abnormalities, there is a partial GH deficiency which can explain the harmonious short stature. This case seems worth to be reported as it adds GH deficiency to the very rare syndrome.
Collapse
Affiliation(s)
- Farida Chentli
- Department of Endocrine and Metabolic Diseases, Bab El Oued Teaching Hospital. 5, Boulevard Said Touati, Algiers, Algeria
| | - Hadjer Zellagui
- Department of Endocrine and Metabolic Diseases, Bab El Oued Teaching Hospital. 5, Boulevard Said Touati, Algiers, Algeria
| |
Collapse
|
8
|
Baraitser-Winter cerebrofrontofacial syndrome: delineation of the spectrum in 42 cases. Eur J Hum Genet 2014; 23:292-301. [PMID: 25052316 DOI: 10.1038/ejhg.2014.95] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 04/05/2014] [Accepted: 04/30/2014] [Indexed: 11/08/2022] Open
Abstract
Baraitser-Winter, Fryns-Aftimos and cerebrofrontofacial syndrome types 1 and 3 have recently been associated with heterozygous gain-of-function mutations in one of the two ubiquitous cytoplasmic actin-encoding genes ACTB and ACTG1 that encode β- and γ-actins. We present detailed phenotypic descriptions and neuroimaging on 36 patients analyzed by our group and six cases from the literature with a molecularly proven actinopathy (9 ACTG1 and 33 ACTB). The major clinical anomalies are striking dysmorphic facial features with hypertelorism, broad nose with large tip and prominent root, congenital non-myopathic ptosis, ridged metopic suture and arched eyebrows. Iris or retinal coloboma is present in many cases, as is sensorineural deafness. Cleft lip and palate, hallux duplex, congenital heart defects and renal tract anomalies are seen in some cases. Microcephaly may develop with time. Nearly all patients with ACTG1 mutations, and around 60% of those with ACTB mutations have some degree of pachygyria with anteroposterior severity gradient, rarely lissencephaly or neuronal heterotopia. Reduction of shoulder girdle muscle bulk and progressive joint stiffness is common. Early muscular involvement, occasionally with congenital arthrogryposis, may be present. Progressive, severe dystonia was seen in one family. Intellectual disability and epilepsy are variable in severity and largely correlate with CNS anomalies. One patient developed acute lymphocytic leukemia, and another a cutaneous lymphoma, indicating that actinopathies may be cancer-predisposing disorders. Considering the multifaceted role of actins in cell physiology, we hypothesize that some clinical manifestations may be partially mutation specific. Baraitser-Winter cerebrofrontofacial syndrome is our suggested designation for this clinical entity.
Collapse
|
9
|
Fry AE, Cushion TD, Pilz DT. The genetics of lissencephaly. AMERICAN JOURNAL OF MEDICAL GENETICS PART C-SEMINARS IN MEDICAL GENETICS 2014; 166C:198-210. [DOI: 10.1002/ajmg.c.31402] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
10
|
Bilateral iris, choroid, optic nerve colobomas and retinal detachment in an Egyptian patient with mild Baraitser–Winter syndrome. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2014. [DOI: 10.1016/j.ejmhg.2013.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
11
|
Yamada Y, Nishi A, Ebara Y, Kato M, Yamamoto H, Morita H, Nomura I, Matsumoto K, Hirato J, Hatakeyama SI, Suzuki N, Hayashi Y. Eosinophilic Gastrointestinal Disorders in Infants: A Japanese Case Series. Int Arch Allergy Immunol 2011; 155 Suppl 1:40-5. [DOI: 10.1159/000327264] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|