Clinical and genetic analyses of Joubert syndrome in children.
10.7499/j.issn.1008-8830.2212069
- Author:
Guang-Yu ZHANG
1
;
Yun-Xia ZHAO
1
;
Hui-Ling ZHAO
1
;
Guo-Hao TANG
1
;
Peng-Liang WANG
1
;
Deng-Na ZHU
1
Author Information
1. Department of Children's Rehabilitation, Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
- Publication Type:Journal Article
- Keywords:
Child;
Clinical feature;
Gene;
Joubert syndrome
- MeSH:
Male;
Female;
Humans;
Child;
Cerebellum;
Abnormalities, Multiple/genetics*;
Kidney Diseases, Cystic/genetics*;
Eye Abnormalities/genetics*;
Retina;
Retrospective Studies;
Muscle Hypotonia/genetics*
- From:
Chinese Journal of Contemporary Pediatrics
2023;25(5):497-501
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVES:To study the clinical and genetic features of Joubert syndrome (JS) in children.
METHODS:A retrospective analysis was performed on the clinical data, genetic data, and follow-up data of 20 children who were diagnosed with JS in the Department of Children's Rehabilitation, the Third Affiliated Hospital of Zhengzhou University, from January 2017 to July 2022.
RESULTS:Among the 20 children with JS, there were 11 boys and 9 girls. The common clinical manifestations were developmental delay (20 children, 100%), abnormal eye movement (19 children, 95%), and hypotonia (16 children, 80%), followed by abnormal respiratory rhythm in 5 children (25%) and unusual facies (including prominent forehead, low-set ears, and triangular mouth) in 3 children (15%), and no limb deformity was observed. All 20 children (100%) had the typical "molar tooth sign" and "midline cleft syndrome" on head images, and 6 children (30%) had abnormal eye examination results. Genetic testing was performed on 7 children and revealed 6 pathogenic genes, i.e., the CPLANE1, RPGRIP1L, MKS1, CC2D2A, CEP120, and AHI1 genes.
CONCLUSIONS:For children with developmental delay, especially those with abnormal eye movement and hypotonia, it is recommended to perform a head imaging examination to determine the presence or absence of "molar tooth sign" and "midline cleft syndrome", so as to screen for JS to avoid missed diagnosis and misdiagnosis. There are many pathogenic genes for JS, and whole-exome sequencing can assist in the diagnosis of JS.
