Molecular cytogenetic and phenotypic characterization of Phelan McDermid and 22q13 duplication syndrome: a case report.
Mol Cytogenet
; 15(1): 52, 2022 Dec 17.
Article
in En
| MEDLINE
| ID: mdl-36528601
ABSTRACT
BACKGROUND:
Phelan-McDermid syndrome (PHMDS) is a rare genetic disorder mostly caused by haploinsufficincy of SHANK3 gene, and characterized by neonatal hypotonia, developmental delay, minor dysmorphic features, seizures and behavior problems. Literature of this syndrome is scanty and confusing, and represents a challenge for pediatricians, in terms of finding the correct diagnoses. CASE PRESENTATION In a postnatal case with hypotonia and dysmorphic features a de novo ring chromosome r(22) leading to in parallel microdeletion and micro duplication in 22q13 was diagnosed by banding cytogenetics, and further characterized in detail by molecular cytogenetic and chromosomal microarray.CONCLUSION:
Here a rare PHMDS case caused by a r(22) is presented. Less than 10 comparable cases are reported in the literature. The present case highlights the importance of conducting genetic counseling and appropriate genetic tests for newborns with mild dysmorphic features.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Mol Cytogenet
Year:
2022
Document type:
Article