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Clinical phenotypes study of 231 children with Williams syndrome in China: A single-center retrospective study.


ABSTRACT:

Background

Williams syndrome (WS) is a multisystem neurodevelopmental disorder caused by microdeletions in 7q11.23. This study aims to characterize the clinical phenotypes of Chinese children with WS to help for the early diagnosis and intervention of this disease.

Methods

231 children diagnosed with WS were retrospectively recruited to the study. Clinical data were analyzed to obtain the incidence of different clinical phenotypes. The occurrence of phenotypes and the influence of gender and age on the incidence of different phenotypes were analyzed.

Results

All WS exhibited facial dysmorphism (100.0%). The majority had neurodevelopmental disorder (91.8%), hoarseness (87.4%) and cardiovascular anomalies (85.7%). The incidence of short stature (46.9%), inguinal hernia (47.2%), hypercalciuria (29.10%), hypercalcemia (9.1%), subclinical hypothyroidism (26.4%) and hypothyroidism (7.4%) were relatively higher. Gender differences were found in supravalvular aortic stenosis (SVAS, p < .001), ventricular septal defect (VSD, p < .05), inguinal hernia (p < .001), superior pulmonary stenosis (SVPS, p < .05) and neurodevelopmental disorder (p < .05). The incidence of neurodevelopmental disorder in WS increased with age (p < .05) while cardiovascular anomalies (p < .001), short stature (p < .001), hypercalciuria (p < .001) and hypercalcemia (p < .01) decreased with age.

Conclusions

Facial dysmorphism, neurodevelopmental disorder, hoarseness and cardiovascular anomalies were the most common phenotypes. Genetic testing should be suggested to confirm the diagnosis for children with the above abnormalities. Gender and age should be taken into account when making diagnosis and intervention.

SUBMITTER: Li FF 

PROVIDER: S-EPMC9747549 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature

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Clinical phenotypes study of 231 children with Williams syndrome in China: A single-center retrospective study.

Li Fang-Fang FF   Chen Wei-Jun WJ   Yao Dan D   Xu Lin L   Shen Ji-Yang JY   Zeng Yan Y   Shi Zhuo Z   Ye Xiao-Wei XW   Kang Dao-Huan DH   Xu Bin B   Shao Jie J   Ji Chai C  

Molecular genetics & genomic medicine 20220927 12


<h4>Background</h4>Williams syndrome (WS) is a multisystem neurodevelopmental disorder caused by microdeletions in 7q11.23. This study aims to characterize the clinical phenotypes of Chinese children with WS to help for the early diagnosis and intervention of this disease.<h4>Methods</h4>231 children diagnosed with WS were retrospectively recruited to the study. Clinical data were analyzed to obtain the incidence of different clinical phenotypes. The occurrence of phenotypes and the influence of  ...[more]

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