Article ; Online: New Insights into Kleefstra Syndrome: Report of Two Novel Cases with Previously Unreported Features and Literature Review.
Cytogenetic and genome research
2018 Volume 156, Issue 3, Page(s) 127–133
Abstract: Kleefstra syndrome (KS) is a rare genetic condition resulting from either 9q34.3 microdeletions or mutations in the EHMT1 gene located in the same genomic region. To date, approximately 100 patients have been reported, thereby allowing the core phenotype ...
Abstract | Kleefstra syndrome (KS) is a rare genetic condition resulting from either 9q34.3 microdeletions or mutations in the EHMT1 gene located in the same genomic region. To date, approximately 100 patients have been reported, thereby allowing the core phenotype of KS to be defined as developmental delay/intellectual disability, generalized hypotonia, neuropsychiatric anomalies, and a distinctive facial appearance. Here, to further expand the knowledge on genotype and phenotype of this condition, we report 2 novel cases: one patient carrying a 46-kb 9q34.3 deletion and showing macrocephaly never described in KS, and a second patient carrying a classic 9q34.3 deletion, presenting with a previously unreported skeletal feature (postaxial polydactyly of the right foot) and an unusual brain anomaly (olfactory bulb hypoplasia) observed via magnetic resonance imaging. Further, we provide a review of the current literature regarding KS and compare these 2 patients with those previously described, thereby confirming that the genotype-phenotype correlation in KS remains difficult to determine. |
---|---|
MeSH term(s) | Brain/diagnostic imaging ; Brain/pathology ; Chromosome Deletion ; Chromosomes, Human, Pair 9/genetics ; Craniofacial Abnormalities/diagnostic imaging ; Craniofacial Abnormalities/genetics ; Craniofacial Abnormalities/pathology ; Facies ; Genotype ; Heart Defects, Congenital/diagnostic imaging ; Heart Defects, Congenital/genetics ; Heart Defects, Congenital/pathology ; Histone-Lysine N-Methyltransferase/genetics ; Humans ; Infant ; Intellectual Disability/diagnostic imaging ; Intellectual Disability/genetics ; Intellectual Disability/pathology ; Magnetic Resonance Imaging ; Male ; Megalencephaly/diagnostic imaging ; Megalencephaly/genetics ; Megalencephaly/pathology ; Mutation ; Olfactory Bulb/diagnostic imaging ; Olfactory Bulb/pathology ; Phenotype ; Polydactyly/genetics ; Polydactyly/pathology ; Toes/abnormalities |
Chemical Substances | EHMT1 protein, human (EC 2.1.1.-) ; Histone-Lysine N-Methyltransferase (EC 2.1.1.43) |
Language | English |
Publishing date | 2018-11-17 |
Publishing country | Switzerland |
Document type | Case Reports ; Journal Article ; Review |
ZDB-ID | 2087824-2 |
ISSN | 1424-859X ; 1424-8581 |
ISSN (online) | 1424-859X |
ISSN | 1424-8581 |
DOI | 10.1159/000494532 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
Full text online
More links
Kategorien
In stock of ZB MED Cologne/Königswinter
Zs.A 512: Show issues | Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (1.OG) ab Jg. 2022: Lesesaal (EG) |
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.