scholarly journals Identification of a novel KAT6A variant in an infant presenting with facial dysmorphism and developmental delay: a case report and literature review

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Soyoung Bae ◽  
Aram Yang ◽  
Jinsup Kim ◽  
Hyun Ju Lee ◽  
Hyun Kyung Park
Keyword(s):  
Developmental Delay ◽  
Congenital Abnormalities ◽  
Genetic Disorder ◽  
Facial Dysmorphism ◽  
Nasal Bridge ◽  
Case Presentation ◽  
Whole Exome ◽  
Gastrointestinal Problems ◽  
Expressive Language Delay ◽  
Serial Assessments

Abstract Background Arboleda-Tham syndrome (ARTHS), caused by a pathogenic variant of KAT6A, is an autosomal dominant inherited genetic disorder characterized by various degrees of developmental delay, dysmorphic facial appearance, cardiac anomalies, and gastrointestinal problems. Case presentation A baby presented multiple facial deformities including a high arched and cleft palate, with philtral ridge and vermilion indentation, a prominent nasal bridge, a thin upper lip, low-set ears, an epicanthal fold, and cardiac malformations. Whole exome sequencing (WES) revealed a heterozygous nonsense mutation in exon 8 of the KAT6A gene (c.1312C>T, p.[Arg438*]) at 2 months of age. After a diagnosis of ARTHS, an expressive language delay was observed during serial assessments of developmental milestones. Conclusions In this study, we describe a case with a novel KAT6A variant first identified in Korea. This case broadens the scope of clinical features of ARTHS and emphasizes that WES is necessary for early diagnosis in patients with dysmorphic facial appearances, developmental delay, and other congenital abnormalities.

scholarly journals Case Report: Second Report of Joubert Syndrome Caused by Biallelic Variants in IFT74

2021 ◽  
Vol 12 ◽  
Author(s):  
Ke Zhongling ◽  
Li Guoming ◽  
Chen Yanhui ◽  
Chen Xiaoru
Keyword(s):  
Developmental Delay ◽  
Joubert Syndrome ◽  
Upper Lip ◽  
New Mutation ◽  
Nasal Bridge ◽  
Whole Exome ◽  
Flat Nasal Bridge ◽  
Development Delay ◽  
A Minor ◽  
Gene Panels

Joubert syndrome (JBTS) is a rare ciliopathy characterized by developmental delay, hypotonia, and distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). We reported a 15-month-old female with dysmorphic features (flat nasal bridge, almond-shaped eye, and a minor midline notch in the upper lips), hypotonia, polydactyly, development delay, and MTS. Whole exome sequencing revealed biallelic heterozygous mutations c.535C>G(p.Q179E/c.853G>T) (p.E285*) in IFT74, which were inherited from the parents. So far, only one article reported JBTS associated with IFT74 gene mutation, and this is the second report of the fifth patient with JBTS due to variants in IFT74. All five patients had developmental delay, postaxial polydactyly, subtle cleft of the upper lip, hypotonia, and MTS, but notably without renal and retinal anomalies or significant obesity, and they shared the same mutation c.535C>G(p.Q179E) in IFT74, and c.853G>T(p.E285*) that we found was a new mutation in IFT74 that related with Joubert syndrome. Those findings highlight the need for the inclusion of IFT74 in gene panels for JBST testing.

scholarly journals Prenatal diagnosis of Meier-Gorlin syndrome 7: a case presentation

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xia Li ◽  
Lan-Zhen Zhang ◽  
Lin Yu ◽  
Zhao-Lua Long ◽  
An-Yun Lin ◽  
...  
Keyword(s):  
Prenatal Diagnosis ◽  
Exome Sequencing ◽  
Whole Exome Sequencing ◽  
Facial Dysmorphism ◽  
Chromosome 22 ◽  
Compound Heterozygous ◽  
Ct Reconstruction ◽  
Gorlin Syndrome ◽  
Case Presentation ◽  
Whole Exome

Abstract Background Meier-Gorlin syndrome 7 (MGS7) is a rare autosomal recessive condition. We reported a fetus diagnosed with Meier-Gorlin syndrome 7. The antenatal sonographic images were presented, and compound heterozygous mutations of CDC45 on chromosome 22 were identified by whole-exome sequencing (WES). Case presentation Fetal growth restriction (FGR), craniosynostosis, and brachydactyly of right thumb were found in a fetus of 28th gestational weeks. The fetus was diagnosed as MGS7 clinically. After extensive counseling, the couple opted for prenatal diagnosis by cordocentesis and termination of pregnancy. Karyotype analysis and WES were performed. Chromosomal karyotyping showed that the fetus was 46, XY. There were 2 mutations of CDC45, the causal gene of MGS7 on chromosome 22, which were inherited from the couple respectively were identified by WES. Facial dysmorphism, brachydactyly of right thumb, and genitalia abnormally were proved by postpartum autopsy, and craniosynostosis was confirmed by three-dimensional computed tomography (3D-CT) reconstruction. Conclusions It is possible to detect multiple clinical features of Meier-Gorlin syndrome in prenatal sonography. Deteriorative FGR complicated with craniosynostosis indicates MGS7. Combination of 2D and 3D ultrasonography helps to detect craniosynostosis. The affected fetus was confirmed a compound heterozygote of CDC45 related MGS by whole-exome sequencing, which is critical in identifying rare genetic diseases.

scholarly journals Rubinstein-Taybi Syndrome: A Case Report

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
A. P. Münevveroglu ◽  
B. B. Akgöl
Keyword(s):  
Case Report ◽  
Dental Treatment ◽  
Treatment Plan ◽  
Genetic Disorder ◽  
Mental Deficiency ◽  
Mentally Retarded ◽  
Facial Dysmorphism ◽  
Nasal Bridge ◽  
Dental Management ◽  
Broad Nasal Bridge

Rubinstein-Taybi syndrome or Broad Thumb-Hallux syndrome is a genetic disorder characterized by facial dysmorphism, growth retardation, and mental deficiency. A seven-year-old girl had come to the Department of Pedodontics, Istanbul Medipol University, Faculty of Dentistry, Turkey, with a complaint of caries and bleeding of gingivae. The patient was mentally retarded. Extraoral features revealed distinctive facial appearance with a broad fore head, hypertelorism, broad nasal bridge, and beaked nose. Intraoral features observed were talons cusps in the upper lateral incisors, carious teeth, and plaque accumulation. Since the patient was mentally retarded, the dental treatment was done under GA. The treatment plan and dental management of this patient are discussed in this case report.

scholarly journals A Case Report of a Prenatally Missed Mowat-Wilson Syndrome With Isolated Corpus Callosum Agenesis

2021 ◽  
Vol 8 ◽  
pp. 2329048X2110065
Author(s):  
Nesrin Şenbil ◽  
Zeynep Arslan ◽  
Derya Beyza Sayın Kocakap ◽  
Yasemin Bilgili
Keyword(s):  
Corpus Callosum ◽  
Autosomal Dominant ◽  
Genetic Disorder ◽  
Gene Mutations ◽  
Hirschsprung Disease ◽  
Agenesis Of Corpus Callosum ◽  
Whole Exome ◽  
Congenital Cardiac Anomalies ◽  
History Of ◽  
Gene Mutation Analysis

Mowat–Wilson syndrome (MWS) is an autosomal dominant genetic disorder caused by ZEB2 gene mutations, manifesting with unique facial characteristics, moderate to severe intellectual problems, and congenital malformations as Hirschsprung disease, genital and ophthalmological anomalies, and congenital cardiac anomalies. Herein, a case of 1-year-old boy with isolated agenesis of corpus callosum (IACC) in the prenatal period is presented. He was admitted postnatally with Hirschsprung disease (HSCR), hypertelorism, uplifted earlobes, deeply set eyes, frontal bossing, oval-shaped nasal tip, ‘‘M’’ shaped upper lip, opened mouth and prominent chin, and developmental delay. Hence, MWS was primarily considered and confirmed by the ZEB2 gene mutation analysis. His karyotype was normal. He had a history of having a prenatally terminated brother with similar features. Antenatally detected IACC should prompt a detailed investigation including karyotype and microarray; even if they are normal then whole exome sequencing (WES) should be done.

scholarly journals Whole-exome sequencing in an individual with severe global developmental delay and intractable epilepsy identifies a novel, de novoGRIN2Amutation

Epilepsia ◽  
2014 ◽  
Vol 55 (7) ◽  
pp. e75-e79 ◽  
Author(s):  
Sunita Venkateswaran ◽  
Ken A. Myers ◽  
Amanda C. Smith ◽  
Chandree L. Beaulieu ◽  
Jeremy A. Schwartzentruber ◽  
...  
Keyword(s):  
Exome Sequencing ◽  
Developmental Delay ◽  
Whole Exome Sequencing ◽  
Intractable Epilepsy ◽  
Global Developmental Delay ◽  
Whole Exome

Exclusive Neurogenic Bladder and Fecal Incontinency in an Achondroplasic Child Successfully Treated with Lumbar Foraminal Decompression

2021 ◽  
pp. 1-6
Author(s):  
Flavio Giordano ◽  
Matteo Lenge ◽  
Pierarturo Donati ◽  
Lorenzo Mongardi ◽  
Gianpiero Di Giacomo ◽  
...  
Keyword(s):  
Fecal Incontinence ◽  
Neurogenic Bladder ◽  
Genetic Disorder ◽  
Motor Impairment ◽  
Foramen Magnum ◽  
Clinical Findings ◽  
Lumbar Stenosis ◽  
Endochondral Bone ◽  
Case Presentation ◽  
First Case

<b><i>Introduction:</i></b> Achondroplasia is a genetic disorder characterized by defects in the development of endochondral bone resulting in skeletal abnormalities like stenosis of the foramen magnum and of the spine, shortened limb bones, and macrocephaly. Congenital spinal stenosis is frequent and due to premature fusion of the pedicles to the laminae. <b><i>Case Presentation:</i></b> We report a case of neurogenic bladder and fecal incontinence due to lumbar stenosis successfully treated with L1–L5 partial laminectomy and foraminotomy in a 7-year-old achondroplasic child. <b><i>Discussion/Conclusion:</i></b> To our knowledge, this is the first case report of exclusive neurogenic bladder and fecal incontinence in an achondroplasic child. Neurogenic bladder and fecal incontinence without motor impairment may be early and exclusive clinical findings of lumbar stenosis in children with achondroplasia.

scholarly journals A rare case of discrete aortic coarctation in Williams-Beuren syndrome. Diagnostic and therapeutic considerations

2015 ◽  
Vol 37 (2) ◽  
Author(s):  
Savina Mannarino ◽  
Eitan Keizman ◽  
Michele Pasotti ◽  
Alessia Claudia Codazzi ◽  
Elisabetta De Sando ◽  
...  
Keyword(s):  
Aortic Coarctation ◽  
Genetic Disorder ◽  
Pulmonary Stenosis ◽  
Rare Event ◽  
Facial Dysmorphism ◽  
Gene Deletions ◽  
Genetic Syndrome ◽  
Surgical Interventions ◽  
Elastin Gene

Williams-Beuren syndrome (WBS) is a genetic disorder caused by elastin gene deletions, and is characterized by cardiovascular malformations, primarily including supravalvular aortic stenosis and peripheral pulmonary stenosis. We report a case of a neonate who developed severe discrete aortic coarctation, underwent multiple surgical interventions, and was subsequently diagnosed with WBS. Severe discrete aortic coarctation is a rare event in WBS newborns. An abnormally thick aortic wall is present in these patients and is the basis of the failure of the classical approach towards coarctation repair, which consists of end-to-end anastomosis as first surgical choice. Our case, and a very few similar previously documented cases, have all demonstrated recoarctation, which only aortic patch implantation was able to successfully repair. In light of this, we would also like to underline the importance of early WBS diagnosis. Therefore, even in mild syndromic phenotype such as low birth weight or facial dysmorphism that raise the suspicion of a genetic syndrome, it is advisable to perform fluorescent <em>in situ</em> hybridization analysis rather than merely karyotypic one.

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