1
|
Tumiene B, Čiuladaitė Ž, Preikšaitienė E, Mameniškienė R, Utkus A, Kučinskas V. Phenotype comparison confirms ZMYND11 as a critical gene for 10p15.3 microdeletion syndrome. J Appl Genet 2017; 58:467-474. [PMID: 28933030 DOI: 10.1007/s13353-017-0408-3] [Citation(s) in RCA: 13] [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: 06/10/2017] [Revised: 08/11/2017] [Accepted: 09/05/2017] [Indexed: 12/11/2022]
Abstract
Proper epigenetic regulation processes are crucial in the normal development of the human brain. An ever-increasing group of neurodevelopmental disorders due to derangements of epigenetic regulation involve both microdeletion and monogenic syndromes. Some of these syndromes have overlapping clinical phenotypes due to haploinsufficiency-sensitive genes involved in microdeletions. It was shown recently that the ZMYND11 gene has important functions in epigenetic regulation as an unconventional transcription co-repressor of highly expressed genes, possibly acting in the repression of cryptic transcription from gene bodies. The aim of our study was to compare the clinical phenotypes of patients with 10p15.3 deletions with the phenotypes of patients with loss-of-function ZMYND11 mutations. The results of our study further confirm that the ZMYND11 gene is the critical gene for the clinical phenotype of 10p15.3 microdeletion involving the terminal ~4 Mb of chromosome 10p. In addition, accumulating clinical data allow for further characterisation of this syndrome, including neurodevelopmental disorder, characteristic dysmorphic features and some other more frequent symptoms, such as behavioural disturbances, hypotonia, seizures, low birth weight, short stature in those older than 10 years of age, genitourinary malformations and recurrent infections.
Collapse
Affiliation(s)
- Birute Tumiene
- Department of Human and Medical Genetics, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Santariskiu 2, 08661, Vilnius, Lithuania. .,Centre for Medical Genetics, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania.
| | - Ž Čiuladaitė
- Department of Human and Medical Genetics, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Santariskiu 2, 08661, Vilnius, Lithuania.,Centre for Medical Genetics, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
| | - E Preikšaitienė
- Department of Human and Medical Genetics, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Santariskiu 2, 08661, Vilnius, Lithuania.,Centre for Medical Genetics, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
| | - R Mameniškienė
- Clinic of Neurology and Neurosurgery, Vilnius University, Vilnius, Lithuania
| | - A Utkus
- Department of Human and Medical Genetics, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Santariskiu 2, 08661, Vilnius, Lithuania.,Centre for Medical Genetics, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
| | - V Kučinskas
- Department of Human and Medical Genetics, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Santariskiu 2, 08661, Vilnius, Lithuania.,Centre for Medical Genetics, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
| |
Collapse
|
2
|
Poluha A, Bernaciak J, Jaszczuk I, Kędzior M, Nowakowska BA. Molecular and clinical characterization of new patient with 1,08 Mb deletion in 10p15.3 region. Mol Cytogenet 2017; 10:34. [PMID: 28912834 PMCID: PMC5588601 DOI: 10.1186/s13039-017-0336-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 08/29/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Three distinct contiguous gene deletion syndromes are located at 10p chromosomal region. The deletion, involving 10p15.3 region, has been characterized by (DeScipio et al., Am J Med Genet A 158A:2152-61, 2012). However, because of the variation in size of the described deletions and lack of knowledge about the involved genes, the correlation between genotypes and patients' phenotypes remains unknown. CASE PRESENTATION We describe female patient with de novo 1,08 Mb deletion in 10p15.3 region, similar to the patient nr seven reported by (DeScipio et al., Am J Med Genet A 158A:2152-61, 2012) but with more severe clinical features. Our patient demonstrated speech and motor delay, dysmorphic features, brain abnormalities and Tetralogy of Fallot with pulmonary atresia. CONCLUSIONS This case shows the importance of collection of more patients with deletion in order to obtain a more precise physical map of 10p region.
Collapse
Affiliation(s)
- Anna Poluha
- Department of Pediatric Hematology, Oncology and Transplantation Children's University Hospital, Lublin, Poland
| | - Joanna Bernaciak
- Department of Medical Genetics, Cytogenetics, Institute of Mother and Child, Kasprzaka 17, A 01-211 Warsaw, Poland
| | - Ilona Jaszczuk
- Department of Pediatric Hematology, Oncology and Transplantation Children's University Hospital, Lublin, Poland
| | - Marta Kędzior
- Department of Medical Genetics, Cytogenetics, Institute of Mother and Child, Kasprzaka 17, A 01-211 Warsaw, Poland
| | - Beata Anna Nowakowska
- Department of Medical Genetics, Cytogenetics, Institute of Mother and Child, Kasprzaka 17, A 01-211 Warsaw, Poland
| |
Collapse
|
3
|
Molinero I, Broman-Fulks J, Lyons MJ, Matheus MG, Chaubey A, DuPont BR, Friez MJ, Skinner SA, Holden KR. Importance of genetic testing in global health during the evaluation of familial microcephaly. Clin Case Rep 2016; 4:968-971. [PMID: 27761248 PMCID: PMC5054472 DOI: 10.1002/ccr3.669] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 07/04/2016] [Accepted: 08/03/2016] [Indexed: 11/06/2022] Open
Abstract
A focused genetic workup is useful in determining the cause of familial microcephaly, especially in the setting of mildly different phenotypes. As illustrated by this case from an impoverished international urban location, one must not assume the etiology for the apparent familial microcephaly is the same for all affected members.
Collapse
Affiliation(s)
- Isaac Molinero
- The Children's Hospital at Montefiore University Hospital for Albert Einstein College of Medicine Bronx New York USA
| | - Jordan Broman-Fulks
- College of Medicine Medical University of South Carolina Charleston South Carolina USA
| | | | - Maria Gisele Matheus
- Departments of Radiology and Radiological Science Medical University of South Carolina Charleston South Carolina USA
| | - Alka Chaubey
- Greenwood Genetic Center Greenwood South Carolina USA
| | | | | | | | - Kenton R Holden
- Greenwood Genetic Center Greenwood South Carolina USA; Departments of Neurosciences (Neurology) and Pediatrics Medical University of South Carolina Charleston South Carolina USA
| |
Collapse
|
4
|
Vargiami E, Ververi A, Kyriazi M, Papathanasiou E, Gioula G, Gerou S, Al-Mutawa H, Kambouris M, Zafeiriou DI. Severe clinical presentation in monozygotic twins with 10p15.3 microdeletion syndrome. Am J Med Genet A 2013; 164A:764-8. [PMID: 24357427 DOI: 10.1002/ajmg.a.36329] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [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: 05/02/2013] [Accepted: 09/15/2013] [Indexed: 11/09/2022]
Abstract
Submicroscopic deletion of 10p15.3 is a rare genetic disorder, currently reported in 21 unrelated patients. It is mainly associated with cognitive deficits, speech disorders, motor delay and hypotonia. The size of the deleted region ranges between 0.15 and 4 Mb and does not generally correlate with phenotype. A monozygotic female twin pair with a de novo 2.7 Mb deletion of 10p15.3 is herein reported. The girls presented at the age of 8 months with severe developmental delay and failure to thrive since the first month of life. Their perinatal and family history was unremarkable. On admission they both exhibited generalized dystonia, microcephaly, complete absence of voluntary movements and visual/auditory unresponsiveness. Their brain MRIs demonstrated dilatation of ventricles, subarachnoid spaces and anterior interhemispheric fissure and sylvian fissures bilaterally. Cranial radiography revealed partial fusion of both coronal sutures. Visual and brainstem auditory evoked potentials were markedly abnormal, indicating severe visual and sensorineural hearing impairment. The electroencephalogram, as well as a screening for inborn errors of metabolism, were unremarkable. Both patients required gastrostomy and tracheostomy before the age of 1 year. They were, additionally, managed with physical therapy, as well as baclofen and low-dose haloperidol. Their current state at the age of 2 years is relatively stable. The index patients' phenotype includes features, such as dystonic cerebral palsy, visual and sensorineural hearing impairment or craniosynostosis, which have not been previously reported in individuals with 10p15.3 deletion. It is necessary to consider these novel clinical features and investigate their possible relationship with the recently recognized syndrome.
Collapse
Affiliation(s)
- Euthymia Vargiami
- 1st Department of Pediatrics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | | | | | | | | | | | | | | |
Collapse
|